From f4eee81c45be8b0373df01c55ea3cf904d57f87c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E6=99=A8?= <lichen@ieemoo.com>
Date: Tue, 22 Nov 2022 15:32:06 +0800
Subject: [PATCH] first push

---
 .gitignore                                 |   128 +
 RAFT/LICENSE                               |    29 +
 RAFT/__init__.py                           |     0
 RAFT/alt_cuda_corr/correlation.cpp         |    54 +
 RAFT/alt_cuda_corr/correlation_kernel.cu   |   324 +
 RAFT/alt_cuda_corr/setup.py                |    15 +
 RAFT/analysis_video.py                     |   233 +
 RAFT/chairs_split.txt                      | 22872 +++++++++++++++++++
 RAFT/core/__init__.py                      |     0
 RAFT/core/corr.py                          |    94 +
 RAFT/core/datasets.py                      |   235 +
 RAFT/core/extractor.py                     |   267 +
 RAFT/core/raft.py                          |   145 +
 RAFT/core/update.py                        |   139 +
 RAFT/core/utils/__init__.py                |     0
 RAFT/core/utils/augmentor.py               |   246 +
 RAFT/core/utils/flow_viz.py                |   132 +
 RAFT/core/utils/frame_utils.py             |   137 +
 RAFT/core/utils/utils.py                   |    82 +
 RAFT/demo.py                               |    75 +
 RAFT/download_models.sh                    |     3 +
 RAFT/evaluate.py                           |   197 +
 RAFT/train.py                              |   247 +
 RAFT/train_mixed.sh                        |     6 +
 RAFT/train_standard.sh                     |     6 +
 cirtorch/.DS_Store                         |   Bin 0 -> 8196 bytes
 cirtorch/IamgeRetrieval_dataset/train.pkl  |   Bin 0 -> 61628 bytes
 cirtorch/__init__.py                       |     6 +
 cirtorch/datasets/__init__.py              |     0
 cirtorch/datasets/datahelpers.py           |    56 +
 cirtorch/datasets/genericdataset.py        |   121 +
 cirtorch/datasets/testdataset.py           |    38 +
 cirtorch/datasets/traindataset.py          |   247 +
 cirtorch/examples/__init__.py              |     0
 cirtorch/examples/test.py                  |   266 +
 cirtorch/examples/test_e2e.py              |   145 +
 cirtorch/examples/train.py                 |   580 +
 cirtorch/layers/__init__.py                |     0
 cirtorch/layers/functional.py              |   172 +
 cirtorch/layers/loss.py                    |    48 +
 cirtorch/layers/normalization.py           |    33 +
 cirtorch/layers/pooling.py                 |   113 +
 cirtorch/networks/__init__.py              |     0
 cirtorch/networks/imageretrievalnet.py     |   427 +
 cirtorch/networks/imageretrievalnet_cpu.py |   392 +
 cirtorch/utils/__init__.py                 |     0
 cirtorch/utils/download.py                 |   154 +
 cirtorch/utils/download_win.py             |   152 +
 cirtorch/utils/evaluate.py                 |   149 +
 cirtorch/utils/general.py                  |    34 +
 cirtorch/utils/whiten.py                   |    65 +
 ieemoo-ai-search.py                        |    96 +
 init.sh                                    |     4 +
 interface.py                               |   246 +
 main.py                                    |    16 +
 nts/README.md                              |    33 +
 nts/config.py                              |    10 +
 nts/core/anchors.py                        |   100 +
 nts/core/dataset.py                        |    77 +
 nts/core/model.py                          |    96 +
 nts/core/resnet.py                         |   212 +
 nts/core/utils.py                          |   104 +
 nts/test.py                                |    74 +
 nts/train.py                               |   152 +
 requirements.txt                           |    22 +
 sample_server.py                           |   112 +
 server.py                                  |    85 +
 start.sh                                   |     2 +
 stop.sh                                    |     2 +
 updatefile.py                              |    73 +
 upfile.py                                  |    19 +
 utils/.DS_Store                            |   Bin 0 -> 6148 bytes
 utils/celeryconfig.py                      |     4 +
 utils/classify.py                          |   582 +
 utils/config.py                            |    59 +
 utils/forsegmentation.py                   |   121 +
 utils/logging.json                         |    45 +
 utils/monitor.py                           |    61 +
 utils/retrieval_feature.py                 |    71 +
 utils/tools.py                             |   124 +
 utils/updateObs.py                         |    71 +
 81 files changed, 31537 insertions(+)
 create mode 100644 .gitignore
 create mode 100755 RAFT/LICENSE
 create mode 100755 RAFT/__init__.py
 create mode 100755 RAFT/alt_cuda_corr/correlation.cpp
 create mode 100755 RAFT/alt_cuda_corr/correlation_kernel.cu
 create mode 100755 RAFT/alt_cuda_corr/setup.py
 create mode 100755 RAFT/analysis_video.py
 create mode 100755 RAFT/chairs_split.txt
 create mode 100755 RAFT/core/__init__.py
 create mode 100755 RAFT/core/corr.py
 create mode 100755 RAFT/core/datasets.py
 create mode 100755 RAFT/core/extractor.py
 create mode 100755 RAFT/core/raft.py
 create mode 100755 RAFT/core/update.py
 create mode 100755 RAFT/core/utils/__init__.py
 create mode 100755 RAFT/core/utils/augmentor.py
 create mode 100755 RAFT/core/utils/flow_viz.py
 create mode 100755 RAFT/core/utils/frame_utils.py
 create mode 100755 RAFT/core/utils/utils.py
 create mode 100755 RAFT/demo.py
 create mode 100755 RAFT/download_models.sh
 create mode 100755 RAFT/evaluate.py
 create mode 100755 RAFT/train.py
 create mode 100755 RAFT/train_mixed.sh
 create mode 100755 RAFT/train_standard.sh
 create mode 100644 cirtorch/.DS_Store
 create mode 100644 cirtorch/IamgeRetrieval_dataset/train.pkl
 create mode 100755 cirtorch/__init__.py
 create mode 100755 cirtorch/datasets/__init__.py
 create mode 100755 cirtorch/datasets/datahelpers.py
 create mode 100755 cirtorch/datasets/genericdataset.py
 create mode 100755 cirtorch/datasets/testdataset.py
 create mode 100755 cirtorch/datasets/traindataset.py
 create mode 100755 cirtorch/examples/__init__.py
 create mode 100755 cirtorch/examples/test.py
 create mode 100755 cirtorch/examples/test_e2e.py
 create mode 100755 cirtorch/examples/train.py
 create mode 100755 cirtorch/layers/__init__.py
 create mode 100755 cirtorch/layers/functional.py
 create mode 100755 cirtorch/layers/loss.py
 create mode 100755 cirtorch/layers/normalization.py
 create mode 100755 cirtorch/layers/pooling.py
 create mode 100755 cirtorch/networks/__init__.py
 create mode 100755 cirtorch/networks/imageretrievalnet.py
 create mode 100644 cirtorch/networks/imageretrievalnet_cpu.py
 create mode 100755 cirtorch/utils/__init__.py
 create mode 100755 cirtorch/utils/download.py
 create mode 100755 cirtorch/utils/download_win.py
 create mode 100755 cirtorch/utils/evaluate.py
 create mode 100755 cirtorch/utils/general.py
 create mode 100755 cirtorch/utils/whiten.py
 create mode 100755 ieemoo-ai-search.py
 create mode 100644 init.sh
 create mode 100644 interface.py
 create mode 100644 main.py
 create mode 100644 nts/README.md
 create mode 100644 nts/config.py
 create mode 100644 nts/core/anchors.py
 create mode 100644 nts/core/dataset.py
 create mode 100644 nts/core/model.py
 create mode 100644 nts/core/resnet.py
 create mode 100644 nts/core/utils.py
 create mode 100644 nts/test.py
 create mode 100644 nts/train.py
 create mode 100644 requirements.txt
 create mode 100755 sample_server.py
 create mode 100755 server.py
 create mode 100644 start.sh
 create mode 100644 stop.sh
 create mode 100644 updatefile.py
 create mode 100644 upfile.py
 create mode 100644 utils/.DS_Store
 create mode 100644 utils/celeryconfig.py
 create mode 100644 utils/classify.py
 create mode 100644 utils/config.py
 create mode 100644 utils/forsegmentation.py
 create mode 100644 utils/logging.json
 create mode 100644 utils/monitor.py
 create mode 100644 utils/retrieval_feature.py
 create mode 100644 utils/tools.py
 create mode 100644 utils/updateObs.py

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..982f68d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,128 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+#log
+log/
+#data
+*.pth
+*.jpg
+*.png
+*.tar
+*.h5
+*.mp4
+*.avi
+utils/goodsCategory.json
+utils/monitor.json
+tmp.txt
diff --git a/RAFT/LICENSE b/RAFT/LICENSE
new file mode 100755
index 0000000..ed13d84
--- /dev/null
+++ b/RAFT/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2020, princeton-vl
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/RAFT/__init__.py b/RAFT/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/RAFT/alt_cuda_corr/correlation.cpp b/RAFT/alt_cuda_corr/correlation.cpp
new file mode 100755
index 0000000..b01584d
--- /dev/null
+++ b/RAFT/alt_cuda_corr/correlation.cpp
@@ -0,0 +1,54 @@
+#include <torch/extension.h>
+#include <vector>
+
+// CUDA forward declarations
+std::vector<torch::Tensor> corr_cuda_forward(
+    torch::Tensor fmap1,
+    torch::Tensor fmap2,
+    torch::Tensor coords,
+    int radius);
+
+std::vector<torch::Tensor> corr_cuda_backward(
+  torch::Tensor fmap1,
+  torch::Tensor fmap2,
+  torch::Tensor coords,
+  torch::Tensor corr_grad,
+  int radius);
+
+// C++ interface
+#define CHECK_CUDA(x) TORCH_CHECK(x.type().is_cuda(), #x " must be a CUDA tensor")
+#define CHECK_CONTIGUOUS(x) TORCH_CHECK(x.is_contiguous(), #x " must be contiguous")
+#define CHECK_INPUT(x) CHECK_CUDA(x); CHECK_CONTIGUOUS(x)
+
+std::vector<torch::Tensor> corr_forward(
+    torch::Tensor fmap1,
+    torch::Tensor fmap2,
+    torch::Tensor coords,
+    int radius) {
+  CHECK_INPUT(fmap1);
+  CHECK_INPUT(fmap2);
+  CHECK_INPUT(coords);
+
+  return corr_cuda_forward(fmap1, fmap2, coords, radius);
+}
+
+
+std::vector<torch::Tensor> corr_backward(
+    torch::Tensor fmap1,
+    torch::Tensor fmap2,
+    torch::Tensor coords,
+    torch::Tensor corr_grad,
+    int radius) {
+  CHECK_INPUT(fmap1);
+  CHECK_INPUT(fmap2);
+  CHECK_INPUT(coords);
+  CHECK_INPUT(corr_grad);
+
+  return corr_cuda_backward(fmap1, fmap2, coords, corr_grad, radius);
+}
+
+
+PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
+  m.def("forward", &corr_forward, "CORR forward");
+  m.def("backward", &corr_backward, "CORR backward");
+}
\ No newline at end of file
diff --git a/RAFT/alt_cuda_corr/correlation_kernel.cu b/RAFT/alt_cuda_corr/correlation_kernel.cu
new file mode 100755
index 0000000..145e580
--- /dev/null
+++ b/RAFT/alt_cuda_corr/correlation_kernel.cu
@@ -0,0 +1,324 @@
+#include <torch/extension.h>
+#include <cuda.h>
+#include <cuda_runtime.h>
+#include <vector>
+
+
+#define BLOCK_H 4
+#define BLOCK_W 8
+#define BLOCK_HW BLOCK_H * BLOCK_W
+#define CHANNEL_STRIDE 32
+
+
+__forceinline__ __device__
+bool within_bounds(int h, int w, int H, int W) {
+  return h >= 0 && h < H && w >= 0 && w < W;
+}
+
+template <typename scalar_t>
+__global__ void corr_forward_kernel(
+    const torch::PackedTensorAccessor32<scalar_t,4,torch::RestrictPtrTraits> fmap1,
+    const torch::PackedTensorAccessor32<scalar_t,4,torch::RestrictPtrTraits> fmap2,
+    const torch::PackedTensorAccessor32<scalar_t,5,torch::RestrictPtrTraits> coords,
+    torch::PackedTensorAccessor32<scalar_t,5,torch::RestrictPtrTraits> corr,
+    int r)
+{
+  const int b = blockIdx.x;
+  const int h0 = blockIdx.y * blockDim.x;
+  const int w0 = blockIdx.z * blockDim.y;
+  const int tid = threadIdx.x * blockDim.y + threadIdx.y;
+
+  const int H1 = fmap1.size(1);
+  const int W1 = fmap1.size(2);
+  const int H2 = fmap2.size(1);
+  const int W2 = fmap2.size(2);
+  const int N = coords.size(1);
+  const int C = fmap1.size(3);
+
+  __shared__ scalar_t f1[CHANNEL_STRIDE][BLOCK_HW+1];
+  __shared__ scalar_t f2[CHANNEL_STRIDE][BLOCK_HW+1];
+  __shared__ scalar_t x2s[BLOCK_HW];
+  __shared__ scalar_t y2s[BLOCK_HW];
+
+  for (int c=0; c<C; c+=CHANNEL_STRIDE) {
+    for (int k=0; k<BLOCK_HW; k+=BLOCK_HW/CHANNEL_STRIDE) {
+      int k1 = k + tid / CHANNEL_STRIDE;
+      int h1 = h0 + k1 / BLOCK_W;
+      int w1 = w0 + k1 % BLOCK_W;
+      int c1 = tid % CHANNEL_STRIDE;
+
+      auto fptr = fmap1[b][h1][w1];
+      if (within_bounds(h1, w1, H1, W1))
+        f1[c1][k1] = fptr[c+c1];
+      else
+        f1[c1][k1] = 0.0;
+    }
+
+    __syncthreads();
+
+    for (int n=0; n<N; n++) {
+      int h1 = h0 + threadIdx.x;
+      int w1 = w0 + threadIdx.y;
+      if (within_bounds(h1, w1, H1, W1)) {
+        x2s[tid] = coords[b][n][h1][w1][0];
+        y2s[tid] = coords[b][n][h1][w1][1];
+      }
+
+      scalar_t dx = x2s[tid] - floor(x2s[tid]);
+      scalar_t dy = y2s[tid] - floor(y2s[tid]);
+
+      int rd = 2*r + 1;
+      for (int iy=0; iy<rd+1; iy++) {
+        for (int ix=0; ix<rd+1; ix++) {
+          for (int k=0; k<BLOCK_HW; k+=BLOCK_HW/CHANNEL_STRIDE) {
+            int k1 = k + tid / CHANNEL_STRIDE;
+            int h2 = static_cast<int>(floor(y2s[k1]))-r+iy;
+            int w2 = static_cast<int>(floor(x2s[k1]))-r+ix;
+            int c2 = tid % CHANNEL_STRIDE;
+
+            auto fptr = fmap2[b][h2][w2];
+            if (within_bounds(h2, w2, H2, W2))
+              f2[c2][k1] = fptr[c+c2];
+            else
+              f2[c2][k1] = 0.0;
+          }
+
+          __syncthreads();
+      
+          scalar_t s = 0.0;
+          for (int k=0; k<CHANNEL_STRIDE; k++)
+            s += f1[k][tid] * f2[k][tid];
+
+          int ix_nw = H1*W1*((iy-1) + rd*(ix-1));
+          int ix_ne = H1*W1*((iy-1) + rd*ix);
+          int ix_sw = H1*W1*(iy + rd*(ix-1));
+          int ix_se = H1*W1*(iy + rd*ix);
+
+          scalar_t nw = s * (dy) * (dx);
+          scalar_t ne = s * (dy) * (1-dx);
+          scalar_t sw = s * (1-dy) * (dx);
+          scalar_t se = s * (1-dy) * (1-dx);
+
+          scalar_t* corr_ptr = &corr[b][n][0][h1][w1];
+
+          if (iy > 0 && ix > 0 && within_bounds(h1, w1, H1, W1))
+            *(corr_ptr + ix_nw) += nw;
+
+          if (iy > 0 && ix < rd && within_bounds(h1, w1, H1, W1))
+            *(corr_ptr + ix_ne) += ne;
+
+          if (iy < rd && ix > 0 && within_bounds(h1, w1, H1, W1))
+            *(corr_ptr + ix_sw) += sw;
+
+          if (iy < rd && ix < rd && within_bounds(h1, w1, H1, W1))
+            *(corr_ptr + ix_se) += se;
+        }
+      } 
+    }
+  }
+}
+
+
+template <typename scalar_t>
+__global__ void corr_backward_kernel(
+    const torch::PackedTensorAccessor32<scalar_t,4,torch::RestrictPtrTraits> fmap1,
+    const torch::PackedTensorAccessor32<scalar_t,4,torch::RestrictPtrTraits> fmap2,
+    const torch::PackedTensorAccessor32<scalar_t,5,torch::RestrictPtrTraits> coords,
+    const torch::PackedTensorAccessor32<scalar_t,5,torch::RestrictPtrTraits> corr_grad,
+    torch::PackedTensorAccessor32<scalar_t,4,torch::RestrictPtrTraits> fmap1_grad,
+    torch::PackedTensorAccessor32<scalar_t,4,torch::RestrictPtrTraits> fmap2_grad,
+    torch::PackedTensorAccessor32<scalar_t,5,torch::RestrictPtrTraits> coords_grad,
+    int r)
+{
+
+  const int b = blockIdx.x;
+  const int h0 = blockIdx.y * blockDim.x;
+  const int w0 = blockIdx.z * blockDim.y;
+  const int tid = threadIdx.x * blockDim.y + threadIdx.y;
+
+  const int H1 = fmap1.size(1);
+  const int W1 = fmap1.size(2);
+  const int H2 = fmap2.size(1);
+  const int W2 = fmap2.size(2);
+  const int N = coords.size(1);
+  const int C = fmap1.size(3);
+
+  __shared__ scalar_t f1[CHANNEL_STRIDE][BLOCK_HW+1];
+  __shared__ scalar_t f2[CHANNEL_STRIDE][BLOCK_HW+1];
+
+  __shared__ scalar_t f1_grad[CHANNEL_STRIDE][BLOCK_HW+1];
+  __shared__ scalar_t f2_grad[CHANNEL_STRIDE][BLOCK_HW+1];
+
+  __shared__ scalar_t x2s[BLOCK_HW];
+  __shared__ scalar_t y2s[BLOCK_HW];
+
+  for (int c=0; c<C; c+=CHANNEL_STRIDE) {
+
+    for (int k=0; k<BLOCK_HW; k+=BLOCK_HW/CHANNEL_STRIDE) {
+      int k1 = k + tid / CHANNEL_STRIDE;
+      int h1 = h0 + k1 / BLOCK_W;
+      int w1 = w0 + k1 % BLOCK_W;
+      int c1 = tid % CHANNEL_STRIDE;
+
+      auto fptr = fmap1[b][h1][w1];
+      if (within_bounds(h1, w1, H1, W1))
+        f1[c1][k1] = fptr[c+c1];
+      else
+        f1[c1][k1] = 0.0;
+
+      f1_grad[c1][k1] = 0.0;
+    }
+
+    __syncthreads();
+
+    int h1 = h0 + threadIdx.x;
+    int w1 = w0 + threadIdx.y;
+
+    for (int n=0; n<N; n++) {  
+      x2s[tid] = coords[b][n][h1][w1][0];
+      y2s[tid] = coords[b][n][h1][w1][1];
+
+      scalar_t dx = x2s[tid] - floor(x2s[tid]);
+      scalar_t dy = y2s[tid] - floor(y2s[tid]);
+
+      int rd = 2*r + 1;
+      for (int iy=0; iy<rd+1; iy++) {
+        for (int ix=0; ix<rd+1; ix++) {
+          for (int k=0; k<BLOCK_HW; k+=BLOCK_HW/CHANNEL_STRIDE) {
+            int k1 = k + tid / CHANNEL_STRIDE;
+            int h2 = static_cast<int>(floor(y2s[k1]))-r+iy;
+            int w2 = static_cast<int>(floor(x2s[k1]))-r+ix;
+            int c2 = tid % CHANNEL_STRIDE;
+
+            auto fptr = fmap2[b][h2][w2];
+            if (within_bounds(h2, w2, H2, W2))
+              f2[c2][k1] = fptr[c+c2];
+            else
+              f2[c2][k1] = 0.0;
+
+            f2_grad[c2][k1] = 0.0;
+          }
+
+          __syncthreads();
+      
+          const scalar_t* grad_ptr = &corr_grad[b][n][0][h1][w1];
+          scalar_t g = 0.0;
+
+          int ix_nw = H1*W1*((iy-1) + rd*(ix-1));
+          int ix_ne = H1*W1*((iy-1) + rd*ix);
+          int ix_sw = H1*W1*(iy + rd*(ix-1));
+          int ix_se = H1*W1*(iy + rd*ix);
+
+          if (iy > 0 && ix > 0 && within_bounds(h1, w1, H1, W1))
+            g +=  *(grad_ptr + ix_nw) * dy * dx;
+
+          if (iy > 0 && ix < rd && within_bounds(h1, w1, H1, W1))
+            g += *(grad_ptr + ix_ne) * dy * (1-dx);
+
+          if (iy < rd && ix > 0 && within_bounds(h1, w1, H1, W1))
+            g += *(grad_ptr + ix_sw) * (1-dy) * dx;
+
+          if (iy < rd && ix < rd && within_bounds(h1, w1, H1, W1))
+            g += *(grad_ptr + ix_se) * (1-dy) * (1-dx);
+            
+          for (int k=0; k<CHANNEL_STRIDE; k++) {
+            f1_grad[k][tid] += g * f2[k][tid];
+            f2_grad[k][tid] += g * f1[k][tid];
+          }
+
+          for (int k=0; k<BLOCK_HW; k+=BLOCK_HW/CHANNEL_STRIDE) {
+            int k1 = k + tid / CHANNEL_STRIDE;
+            int h2 = static_cast<int>(floor(y2s[k1]))-r+iy;
+            int w2 = static_cast<int>(floor(x2s[k1]))-r+ix;
+            int c2 = tid % CHANNEL_STRIDE;
+
+            scalar_t* fptr = &fmap2_grad[b][h2][w2][0];
+            if (within_bounds(h2, w2, H2, W2))
+              atomicAdd(fptr+c+c2, f2_grad[c2][k1]);
+          }
+        }
+      } 
+    }
+    __syncthreads();
+
+
+    for (int k=0; k<BLOCK_HW; k+=BLOCK_HW/CHANNEL_STRIDE) {
+      int k1 = k + tid / CHANNEL_STRIDE;
+      int h1 = h0 + k1 / BLOCK_W;
+      int w1 = w0 + k1 % BLOCK_W;
+      int c1 = tid % CHANNEL_STRIDE;
+
+      scalar_t* fptr = &fmap1_grad[b][h1][w1][0];
+      if (within_bounds(h1, w1, H1, W1))
+        fptr[c+c1] += f1_grad[c1][k1];
+    }
+  }
+}
+
+
+
+std::vector<torch::Tensor> corr_cuda_forward(
+  torch::Tensor fmap1,
+  torch::Tensor fmap2,
+  torch::Tensor coords,
+  int radius)
+{
+  const auto B = coords.size(0);
+  const auto N = coords.size(1);
+  const auto H = coords.size(2);
+  const auto W = coords.size(3);
+
+  const auto rd = 2 * radius + 1;
+  auto opts = fmap1.options();
+  auto corr = torch::zeros({B, N, rd*rd, H, W}, opts);
+  
+  const dim3 blocks(B, (H+BLOCK_H-1)/BLOCK_H, (W+BLOCK_W-1)/BLOCK_W);
+  const dim3 threads(BLOCK_H, BLOCK_W);
+
+  corr_forward_kernel<float><<<blocks, threads>>>(
+    fmap1.packed_accessor32<float,4,torch::RestrictPtrTraits>(),
+    fmap2.packed_accessor32<float,4,torch::RestrictPtrTraits>(),
+    coords.packed_accessor32<float,5,torch::RestrictPtrTraits>(),
+    corr.packed_accessor32<float,5,torch::RestrictPtrTraits>(),
+    radius);
+
+  return {corr};
+}
+
+std::vector<torch::Tensor> corr_cuda_backward(
+  torch::Tensor fmap1,
+  torch::Tensor fmap2,
+  torch::Tensor coords,
+  torch::Tensor corr_grad,
+  int radius)
+{
+  const auto B = coords.size(0);
+  const auto N = coords.size(1);
+
+  const auto H1 = fmap1.size(1);
+  const auto W1 = fmap1.size(2);
+  const auto H2 = fmap2.size(1);
+  const auto W2 = fmap2.size(2);
+  const auto C = fmap1.size(3);
+
+  auto opts = fmap1.options();
+  auto fmap1_grad = torch::zeros({B, H1, W1, C}, opts);
+  auto fmap2_grad = torch::zeros({B, H2, W2, C}, opts);
+  auto coords_grad = torch::zeros({B, N, H1, W1, 2}, opts);
+    
+  const dim3 blocks(B, (H1+BLOCK_H-1)/BLOCK_H, (W1+BLOCK_W-1)/BLOCK_W);
+  const dim3 threads(BLOCK_H, BLOCK_W);
+
+
+  corr_backward_kernel<float><<<blocks, threads>>>(
+    fmap1.packed_accessor32<float,4,torch::RestrictPtrTraits>(),
+    fmap2.packed_accessor32<float,4,torch::RestrictPtrTraits>(),
+    coords.packed_accessor32<float,5,torch::RestrictPtrTraits>(),
+    corr_grad.packed_accessor32<float,5,torch::RestrictPtrTraits>(),
+    fmap1_grad.packed_accessor32<float,4,torch::RestrictPtrTraits>(),
+    fmap2_grad.packed_accessor32<float,4,torch::RestrictPtrTraits>(),
+    coords_grad.packed_accessor32<float,5,torch::RestrictPtrTraits>(),
+    radius);
+
+  return {fmap1_grad, fmap2_grad, coords_grad};
+}
\ No newline at end of file
diff --git a/RAFT/alt_cuda_corr/setup.py b/RAFT/alt_cuda_corr/setup.py
new file mode 100755
index 0000000..c0207ff
--- /dev/null
+++ b/RAFT/alt_cuda_corr/setup.py
@@ -0,0 +1,15 @@
+from setuptools import setup
+from torch.utils.cpp_extension import BuildExtension, CUDAExtension
+
+
+setup(
+    name='correlation',
+    ext_modules=[
+        CUDAExtension('alt_cuda_corr',
+            sources=['correlation.cpp', 'correlation_kernel.cu'],
+            extra_compile_args={'cxx': [], 'nvcc': ['-O3']}),
+    ],
+    cmdclass={
+        'build_ext': BuildExtension
+    })
+
diff --git a/RAFT/analysis_video.py b/RAFT/analysis_video.py
new file mode 100755
index 0000000..6ad3454
--- /dev/null
+++ b/RAFT/analysis_video.py
@@ -0,0 +1,233 @@
+import sys
+sys.path.append('RAFT/core')
+import argparse
+import glob, cv2, os, pdb, time
+import numpy as np
+import torch
+from PIL import Image
+import time
+from raft import RAFT
+from RAFT.core.utils import flow_viz
+from RAFT.core.utils.utils import InputPadder
+from utils.tools import EvaluteMap,ManagingFeature
+from utils.config import cfg
+from utils.updateObs import Addimg_content
+from utils.retrieval_feature import AntiFraudFeatureDataset
+DEVICE = 'cuda'
+global Result
+pre_area = 0
+def load_image(imfile):
+    #img = np.array(Image.open(imfile)).astype(np.uint8)
+    img = np.array(imfile).astype(np.uint8)
+    img = torch.from_numpy(img).permute(2, 0, 1).float()
+    return img[None].to(DEVICE)
+
+def viz(img, flo):
+    img = img[0].permute(1,2,0).cpu().numpy()
+    flo = flo[0].permute(1,2,0).cpu().numpy()
+    flo = flow_viz.flow_to_image(flo)
+    return flo
+
+def raft_init_model(args):
+    model = torch.nn.DataParallel(RAFT(args))
+    model.load_state_dict(torch.load(args.model))
+    model = model.module
+    model.to(DEVICE)
+    model.eval()
+    return model
+
+def analysis_video(model, video_path, result_path, uuid_barcode, maskpath=None, net=None, transform=None, ms=None, match=True):
+    imfile1, imfile2 = None,None
+    affd = AntiFraudFeatureDataset()
+    barcode = uuid_barcode.split('_')[-1]
+    search_r = ManagingFeature().getfeature(barcode)
+    #print('search_r>>>>>>>>', len(search_r))
+    ori_mask = cv2.imread(maskpath, 0)
+    nn, nu = 0, 1
+    Result = '03'
+    img_dic = {}
+    ex_ocrList, resultList = [],[]
+    flag = True
+    fgbg = cv2.createBackgroundSubtractorMOG2(history=500, varThreshold=20, detectShadows = False)
+    #oriimg = cv2.imread(cfg.fgbgmask)
+    with torch.no_grad():
+        capture = cv2.VideoCapture(video_path)
+        ret,frame = capture.read(0)
+        if frame.shape[0]<frame.shape[1]:#1024x1280
+            oriimg = cv2.imread(cfg.fgbgmask)
+            MASKIMG = cfg.MASKIMG
+        else:#1280x1024
+            oriimg = cv2.imread(cfg.fgbgmask_old)
+            MASKIMG = cfg.MASKIMG_old
+        while True:
+            ret,frame = capture.read()
+            if not ret:break
+            frame_show = frame
+            nn += 1
+            if flag: #MOG2过滤为入侵画面
+                if nn%2==0 or nn%3==0:continue #跳帧
+                flag = img_filter(frame, oriimg, fgbg, nn)
+                if flag: continue
+            else: #RAFT定位 
+                if nn%2==0:continue
+            height, width = frame.shape[:2]
+            frame = cv2.GaussianBlur(frame,(5,5),0)
+            frame = cv2.resize(frame, (int(width/2), int(height/2)), interpolation=cv2.INTER_CUBIC)
+            if nu == 1:
+                imfile1 = frame
+                nu += 1
+                continue
+            else:
+                imfile2 = frame
+            image1 = load_image(imfile1)
+            image2 = load_image(imfile2)
+
+            padder = InputPadder(image1.shape)
+            image1, image2 = padder.pad(image1, image2)
+
+            flow_low, flow_up = model(image1, image2, iters=2, test_mode=True)
+            flo = viz(image1, flow_up)
+            result = get_target(result_path, flo, imfile1, nu, ori_mask, uuid_barcode, MASKIMG)
+            imfile1 = imfile2
+            flag, nu, Result = detect(match, affd, net, result, transform, ms, search_r, nn, nu, Result)
+            if flag: break
+        Addimg_content(uuid_barcode, frame_show)#图片上传
+        #if not Result=='03':
+        if result is not None:
+            cv2.imwrite(os.sep.join([cfg.Ocrimg, uuid_barcode+'_'+str(nu)+'.jpg']), result) #give ocr img
+        else:
+            cv2.imwrite(os.sep.join([cfg.Ocrimg, uuid_barcode+'_'+str(nu)+'.jpg']), frame_show) #give ocr img
+        return Result
+
+def detect(match, affd, net, result, transform, ms, search_r, nn, nu, Result):
+    flag = False
+    if match:
+        if result is not None:
+            feature = affd.extractFeature_o(net, result, transform, ms)
+            res = EvaluteMap().match_images(feature, search_r, mod ='single')
+            if Result=='03':
+                Result = ''
+                Result += str(res)+','
+            else:
+                Result += str(res)+','
+
+            if res<cfg.THRESHOLD:
+                #Result ='04'
+                flag = True
+            nu += 1
+        if nu>cfg.NUM_RAFT:
+            #Result = '02'
+            flag = True 
+        if nn>100 and nu>2:
+            flag = True
+    else:
+        if result is not None:
+            nu += 1
+        if nu>cfg.NUM_RAFT:
+            flag = True
+        if nn>100 and nu>2:
+            flag = True
+    return flag, nu, Result
+
+def get_target(path, img, ori_img, nu, ori_mask, uuid_barcode, MASKIMG):
+    global pre_area
+    img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
+    ret, mask = cv2.threshold(img, 249, 255, cv2.THRESH_BINARY)
+    mask_max_area, mask_max_contour = 0, 0
+    mask = cv2.bitwise_not(mask)
+    mask_image = np.zeros((ori_img.shape[0], ori_img.shape[1], 1), np.uint8)
+    if (cv2.__version__).split('.')[0] == '3':
+        _, contours, _ = cv2.findContours(mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE)
+    else:
+        contours, _ = cv2.findContours(mask, cv2.RETR_TREE, cv2.CHAIN_APPROX_NONE)
+    if len(contours)>100:
+        return None
+    for contour in contours:
+        mask_area_now = cv2.contourArea(contour)
+        if mask_area_now > mask_max_area:
+            mask_max_area = mask_area_now
+            mask_max_contour = contour
+    if mask_max_area == 0 :return None  #mask_max_area 目标位的面积
+    (x, y, w, h) = cv2.boundingRect(mask_max_contour)
+    if (w*h)/(img.shape[0]*img.shape[1])>0.80:
+        return None
+    if min(w,h) <100 or max(w,h)>1000:
+        return None
+    coordination = [x, y, x + w, y + h]
+    mask_image = cv2.fillPoly(mask_image, [mask_max_contour], (255))
+    if pre_area==0:
+        pre_area = mask_max_area
+        return None
+    else:
+        if abs(mask_max_area-pre_area)/pre_area > 0.4:
+            pre_area = mask_max_area
+            #print('abs:',abs(mask_max_area-pre_area)/pre_area)
+            return None
+        else:
+            pre_area = mask_max_area
+    A,B,C = mask_image, mask_image, mask_image
+    mask_image = cv2.merge([A,B,C])
+    
+    #该方法去除框外干扰
+    if not get_iou_ratio(mask_image, MASKIMG):
+        return None
+    
+    show = cv2.bitwise_and(ori_img, mask_image)
+    #show = show[coordination[1]:coordination[3], coordination[0]:coordination[2]]
+    show = ori_img[coordination[1]:coordination[3], coordination[0]:coordination[2]]
+    #cv2.imwrite(os.sep.join([cfg.Ocrimg, str(nu-1)+'_'+uuid_barcode+'.jpg']), show)
+    return show
+
+def get_iou_ratio(oimg, MASKIMG):
+    mimg = cv2.imread(MASKIMG)
+    iimg = cv2.bitwise_and(oimg, mimg)
+    iimgarea = get_area(iimg)
+    oimgarea = get_area(oimg)
+    if iimgarea/oimgarea < 0.1:
+        return False
+    else: return True
+
+def get_area(img):
+    kernel = np.ones((3, 3), dtype=np.uint8)
+    img = cv2.dilate(img, kernel, 1)
+    img = cv2.erode(img, kernel, 1)
+    maxcontour, nu = 0,0
+    contours, _ = cv2.findContours(img[:,:,1] ,cv2.RETR_TREE , cv2.CHAIN_APPROX_NONE)
+    if len(contours) == 0:
+        return 0
+    for i in range(len(contours)):
+        if maxcontour < len(contours[i]):
+            maxcontour = len(contours[i])
+            nu = i
+    area = cv2.contourArea(contours[nu])
+    return area
+
+def img_filter(frame, oriimg, fgbg, nn):
+    dic,dics = {},{}
+    iouArea = 0
+    frame = cv2.GaussianBlur(frame, (5, 5), 0)
+    height, width = frame.shape[:2]
+    frame = cv2.resize(frame, (int(width/2), int(height/2)), interpolation=cv2.INTER_CUBIC)
+    # 计算前景掩码
+    fgmask = fgbg.apply(frame)
+    draw1 = cv2.threshold(fgmask, 25, 255, cv2.THRESH_BINARY)[1]
+    if nn==2: return True
+    draw1 = cv2.bitwise_and(oriimg[:, :, 0], draw1)
+    contours_m, hierarchy_m = cv2.findContours(draw1.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
+    for contour in contours_m:
+        dics[len(contour)] = contour
+    if len(dics.keys())>0:
+        cc = sorted(dics.keys())
+        iouArea = cv2.contourArea(dics[cc[-1]])
+    if iouArea>10000 and iouArea<40000:
+        return False
+    return True
+
+if __name__ == '__main__':
+    model = raft_init_model()
+    from utils.tools import createNet
+    net, transform, ms = createNet()
+    video_path = '../data/videos/20220625-094651_37dd99b0-520d-457b-8615-efdb7f53b5b4_6907992825762.mp4'#video_path
+    uuid_barcode = '6907992825762'
+    analysis = analysis_video(model=model, video_path=video_path, result_path='', uuid_barcode=uuid_barcode, maskpath=None, net=net, transform=transform, ms=ms)
+#    analysis_video(model, video_path, result_path)
diff --git a/RAFT/chairs_split.txt b/RAFT/chairs_split.txt
new file mode 100755
index 0000000..6ae8f0b
--- /dev/null
+++ b/RAFT/chairs_split.txt
@@ -0,0 +1,22872 @@
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+2
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+2
+2
+1
+1
+1
+1
+1
+1
+1
+2
+1
+1
+1
+1
+1
\ No newline at end of file
diff --git a/RAFT/core/__init__.py b/RAFT/core/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/RAFT/core/corr.py b/RAFT/core/corr.py
new file mode 100755
index 0000000..97e5c1e
--- /dev/null
+++ b/RAFT/core/corr.py
@@ -0,0 +1,94 @@
+import torch
+import torch.nn.functional as F
+import sys
+sys.path.append('utils')
+#from utils.utils import bilinear_sampler, coords_grid
+from RAFT.core.utils.utils import bilinear_sampler, coords_grid
+
+try:
+    import alt_cuda_corr
+except:
+    # alt_cuda_corr is not compiled
+    pass
+
+
+class CorrBlock:
+    def __init__(self, fmap1, fmap2, num_levels=4, radius=4):
+        self.num_levels = num_levels
+        self.radius = radius
+        self.corr_pyramid = []
+
+        # all pairs correlation
+        corr = CorrBlock.corr(fmap1, fmap2)
+
+        batch, h1, w1, dim, h2, w2 = corr.shape
+        corr = corr.reshape(batch*h1*w1, dim, h2, w2)
+        
+        self.corr_pyramid.append(corr)
+        for i in range(self.num_levels-1):
+            corr = F.avg_pool2d(corr, 2, stride=2)
+            self.corr_pyramid.append(corr)
+
+    def __call__(self, coords):
+        r = self.radius
+        coords = coords.permute(0, 2, 3, 1)
+        batch, h1, w1, _ = coords.shape
+
+        out_pyramid = []
+        for i in range(self.num_levels):
+            corr = self.corr_pyramid[i]
+            dx = torch.linspace(-r, r, 2*r+1)
+            dy = torch.linspace(-r, r, 2*r+1)
+            delta = torch.stack(torch.meshgrid(dy, dx), axis=-1).to(coords.device)
+
+            centroid_lvl = coords.reshape(batch*h1*w1, 1, 1, 2) / 2**i
+            delta_lvl = delta.view(1, 2*r+1, 2*r+1, 2)
+            coords_lvl = centroid_lvl + delta_lvl
+
+            corr = bilinear_sampler(corr, coords_lvl)
+            corr = corr.view(batch, h1, w1, -1)
+            out_pyramid.append(corr)
+
+        out = torch.cat(out_pyramid, dim=-1)
+        return out.permute(0, 3, 1, 2).contiguous().float()
+
+    @staticmethod
+    def corr(fmap1, fmap2):
+        batch, dim, ht, wd = fmap1.shape
+        fmap1 = fmap1.view(batch, dim, ht*wd)
+        fmap2 = fmap2.view(batch, dim, ht*wd) 
+        
+        corr = torch.matmul(fmap1.transpose(1,2), fmap2)
+        corr = corr.view(batch, ht, wd, 1, ht, wd)
+        return corr  / torch.sqrt(torch.tensor(dim).float())
+
+
+class AlternateCorrBlock:
+    def __init__(self, fmap1, fmap2, num_levels=4, radius=4):
+        self.num_levels = num_levels
+        self.radius = radius
+
+        self.pyramid = [(fmap1, fmap2)]
+        for i in range(self.num_levels):
+            fmap1 = F.avg_pool2d(fmap1, 2, stride=2)
+            fmap2 = F.avg_pool2d(fmap2, 2, stride=2)
+            self.pyramid.append((fmap1, fmap2))
+
+    def __call__(self, coords):
+        coords = coords.permute(0, 2, 3, 1)
+        B, H, W, _ = coords.shape
+        dim = self.pyramid[0][0].shape[1]
+
+        corr_list = []
+        for i in range(self.num_levels):
+            r = self.radius
+            fmap1_i = self.pyramid[0][0].permute(0, 2, 3, 1).contiguous()
+            fmap2_i = self.pyramid[i][1].permute(0, 2, 3, 1).contiguous()
+
+            coords_i = (coords / 2**i).reshape(B, 1, H, W, 2).contiguous()
+            corr, = alt_cuda_corr.forward(fmap1_i, fmap2_i, coords_i, r)
+            corr_list.append(corr.squeeze(1))
+
+        corr = torch.stack(corr_list, dim=1)
+        corr = corr.reshape(B, -1, H, W)
+        return corr / torch.sqrt(torch.tensor(dim).float())
diff --git a/RAFT/core/datasets.py b/RAFT/core/datasets.py
new file mode 100755
index 0000000..3411fda
--- /dev/null
+++ b/RAFT/core/datasets.py
@@ -0,0 +1,235 @@
+# Data loading based on https://github.com/NVIDIA/flownet2-pytorch
+
+import numpy as np
+import torch
+import torch.utils.data as data
+import torch.nn.functional as F
+
+import os
+import math
+import random
+from glob import glob
+import os.path as osp
+
+from utils import frame_utils
+from utils.augmentor import FlowAugmentor, SparseFlowAugmentor
+
+
+class FlowDataset(data.Dataset):
+    def __init__(self, aug_params=None, sparse=False):
+        self.augmentor = None
+        self.sparse = sparse
+        if aug_params is not None:
+            if sparse:
+                self.augmentor = SparseFlowAugmentor(**aug_params)
+            else:
+                self.augmentor = FlowAugmentor(**aug_params)
+
+        self.is_test = False
+        self.init_seed = False
+        self.flow_list = []
+        self.image_list = []
+        self.extra_info = []
+
+    def __getitem__(self, index):
+
+        if self.is_test:
+            img1 = frame_utils.read_gen(self.image_list[index][0])
+            img2 = frame_utils.read_gen(self.image_list[index][1])
+            img1 = np.array(img1).astype(np.uint8)[..., :3]
+            img2 = np.array(img2).astype(np.uint8)[..., :3]
+            img1 = torch.from_numpy(img1).permute(2, 0, 1).float()
+            img2 = torch.from_numpy(img2).permute(2, 0, 1).float()
+            return img1, img2, self.extra_info[index]
+
+        if not self.init_seed:
+            worker_info = torch.utils.data.get_worker_info()
+            if worker_info is not None:
+                torch.manual_seed(worker_info.id)
+                np.random.seed(worker_info.id)
+                random.seed(worker_info.id)
+                self.init_seed = True
+
+        index = index % len(self.image_list)
+        valid = None
+        if self.sparse:
+            flow, valid = frame_utils.readFlowKITTI(self.flow_list[index])
+        else:
+            flow = frame_utils.read_gen(self.flow_list[index])
+
+        img1 = frame_utils.read_gen(self.image_list[index][0])
+        img2 = frame_utils.read_gen(self.image_list[index][1])
+
+        flow = np.array(flow).astype(np.float32)
+        img1 = np.array(img1).astype(np.uint8)
+        img2 = np.array(img2).astype(np.uint8)
+
+        # grayscale images
+        if len(img1.shape) == 2:
+            img1 = np.tile(img1[...,None], (1, 1, 3))
+            img2 = np.tile(img2[...,None], (1, 1, 3))
+        else:
+            img1 = img1[..., :3]
+            img2 = img2[..., :3]
+
+        if self.augmentor is not None:
+            if self.sparse:
+                img1, img2, flow, valid = self.augmentor(img1, img2, flow, valid)
+            else:
+                img1, img2, flow = self.augmentor(img1, img2, flow)
+
+        img1 = torch.from_numpy(img1).permute(2, 0, 1).float()
+        img2 = torch.from_numpy(img2).permute(2, 0, 1).float()
+        flow = torch.from_numpy(flow).permute(2, 0, 1).float()
+
+        if valid is not None:
+            valid = torch.from_numpy(valid)
+        else:
+            valid = (flow[0].abs() < 1000) & (flow[1].abs() < 1000)
+
+        return img1, img2, flow, valid.float()
+
+
+    def __rmul__(self, v):
+        self.flow_list = v * self.flow_list
+        self.image_list = v * self.image_list
+        return self
+        
+    def __len__(self):
+        return len(self.image_list)
+        
+
+class MpiSintel(FlowDataset):
+    def __init__(self, aug_params=None, split='training', root='datasets/Sintel', dstype='clean'):
+        super(MpiSintel, self).__init__(aug_params)
+        flow_root = osp.join(root, split, 'flow')
+        image_root = osp.join(root, split, dstype)
+
+        if split == 'test':
+            self.is_test = True
+
+        for scene in os.listdir(image_root):
+            image_list = sorted(glob(osp.join(image_root, scene, '*.png')))
+            for i in range(len(image_list)-1):
+                self.image_list += [ [image_list[i], image_list[i+1]] ]
+                self.extra_info += [ (scene, i) ] # scene and frame_id
+
+            if split != 'test':
+                self.flow_list += sorted(glob(osp.join(flow_root, scene, '*.flo')))
+
+
+class FlyingChairs(FlowDataset):
+    def __init__(self, aug_params=None, split='train', root='datasets/FlyingChairs_release/data'):
+        super(FlyingChairs, self).__init__(aug_params)
+
+        images = sorted(glob(osp.join(root, '*.ppm')))
+        flows = sorted(glob(osp.join(root, '*.flo')))
+        assert (len(images)//2 == len(flows))
+
+        split_list = np.loadtxt('chairs_split.txt', dtype=np.int32)
+        for i in range(len(flows)):
+            xid = split_list[i]
+            if (split=='training' and xid==1) or (split=='validation' and xid==2):
+                self.flow_list += [ flows[i] ]
+                self.image_list += [ [images[2*i], images[2*i+1]] ]
+
+
+class FlyingThings3D(FlowDataset):
+    def __init__(self, aug_params=None, root='datasets/FlyingThings3D', dstype='frames_cleanpass'):
+        super(FlyingThings3D, self).__init__(aug_params)
+
+        for cam in ['left']:
+            for direction in ['into_future', 'into_past']:
+                image_dirs = sorted(glob(osp.join(root, dstype, 'TRAIN/*/*')))
+                image_dirs = sorted([osp.join(f, cam) for f in image_dirs])
+
+                flow_dirs = sorted(glob(osp.join(root, 'optical_flow/TRAIN/*/*')))
+                flow_dirs = sorted([osp.join(f, direction, cam) for f in flow_dirs])
+
+                for idir, fdir in zip(image_dirs, flow_dirs):
+                    images = sorted(glob(osp.join(idir, '*.png')) )
+                    flows = sorted(glob(osp.join(fdir, '*.pfm')) )
+                    for i in range(len(flows)-1):
+                        if direction == 'into_future':
+                            self.image_list += [ [images[i], images[i+1]] ]
+                            self.flow_list += [ flows[i] ]
+                        elif direction == 'into_past':
+                            self.image_list += [ [images[i+1], images[i]] ]
+                            self.flow_list += [ flows[i+1] ]
+      
+
+class KITTI(FlowDataset):
+    def __init__(self, aug_params=None, split='training', root='datasets/KITTI'):
+        super(KITTI, self).__init__(aug_params, sparse=True)
+        if split == 'testing':
+            self.is_test = True
+
+        root = osp.join(root, split)
+        images1 = sorted(glob(osp.join(root, 'image_2/*_10.png')))
+        images2 = sorted(glob(osp.join(root, 'image_2/*_11.png')))
+
+        for img1, img2 in zip(images1, images2):
+            frame_id = img1.split('/')[-1]
+            self.extra_info += [ [frame_id] ]
+            self.image_list += [ [img1, img2] ]
+
+        if split == 'training':
+            self.flow_list = sorted(glob(osp.join(root, 'flow_occ/*_10.png')))
+
+
+class HD1K(FlowDataset):
+    def __init__(self, aug_params=None, root='datasets/HD1k'):
+        super(HD1K, self).__init__(aug_params, sparse=True)
+
+        seq_ix = 0
+        while 1:
+            flows = sorted(glob(os.path.join(root, 'hd1k_flow_gt', 'flow_occ/%06d_*.png' % seq_ix)))
+            images = sorted(glob(os.path.join(root, 'hd1k_input', 'image_2/%06d_*.png' % seq_ix)))
+
+            if len(flows) == 0:
+                break
+
+            for i in range(len(flows)-1):
+                self.flow_list += [flows[i]]
+                self.image_list += [ [images[i], images[i+1]] ]
+
+            seq_ix += 1
+
+
+def fetch_dataloader(args, TRAIN_DS='C+T+K+S+H'):
+    """ Create the data loader for the corresponding trainign set """
+
+    if args.stage == 'chairs':
+        aug_params = {'crop_size': args.image_size, 'min_scale': -0.1, 'max_scale': 1.0, 'do_flip': True}
+        train_dataset = FlyingChairs(aug_params, split='training')
+    
+    elif args.stage == 'things':
+        aug_params = {'crop_size': args.image_size, 'min_scale': -0.4, 'max_scale': 0.8, 'do_flip': True}
+        clean_dataset = FlyingThings3D(aug_params, dstype='frames_cleanpass')
+        final_dataset = FlyingThings3D(aug_params, dstype='frames_finalpass')
+        train_dataset = clean_dataset + final_dataset
+
+    elif args.stage == 'sintel':
+        aug_params = {'crop_size': args.image_size, 'min_scale': -0.2, 'max_scale': 0.6, 'do_flip': True}
+        things = FlyingThings3D(aug_params, dstype='frames_cleanpass')
+        sintel_clean = MpiSintel(aug_params, split='training', dstype='clean')
+        sintel_final = MpiSintel(aug_params, split='training', dstype='final')        
+
+        if TRAIN_DS == 'C+T+K+S+H':
+            kitti = KITTI({'crop_size': args.image_size, 'min_scale': -0.3, 'max_scale': 0.5, 'do_flip': True})
+            hd1k = HD1K({'crop_size': args.image_size, 'min_scale': -0.5, 'max_scale': 0.2, 'do_flip': True})
+            train_dataset = 100*sintel_clean + 100*sintel_final + 200*kitti + 5*hd1k + things
+
+        elif TRAIN_DS == 'C+T+K/S':
+            train_dataset = 100*sintel_clean + 100*sintel_final + things
+
+    elif args.stage == 'kitti':
+        aug_params = {'crop_size': args.image_size, 'min_scale': -0.2, 'max_scale': 0.4, 'do_flip': False}
+        train_dataset = KITTI(aug_params, split='training')
+
+    train_loader = data.DataLoader(train_dataset, batch_size=args.batch_size, 
+        pin_memory=False, shuffle=True, num_workers=4, drop_last=True)
+
+    print('Training with %d image pairs' % len(train_dataset))
+    return train_loader
+
diff --git a/RAFT/core/extractor.py b/RAFT/core/extractor.py
new file mode 100755
index 0000000..9a9c759
--- /dev/null
+++ b/RAFT/core/extractor.py
@@ -0,0 +1,267 @@
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+
+
+class ResidualBlock(nn.Module):
+    def __init__(self, in_planes, planes, norm_fn='group', stride=1):
+        super(ResidualBlock, self).__init__()
+  
+        self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=3, padding=1, stride=stride)
+        self.conv2 = nn.Conv2d(planes, planes, kernel_size=3, padding=1)
+        self.relu = nn.ReLU(inplace=True)
+
+        num_groups = planes // 8
+
+        if norm_fn == 'group':
+            self.norm1 = nn.GroupNorm(num_groups=num_groups, num_channels=planes)
+            self.norm2 = nn.GroupNorm(num_groups=num_groups, num_channels=planes)
+            if not stride == 1:
+                self.norm3 = nn.GroupNorm(num_groups=num_groups, num_channels=planes)
+        
+        elif norm_fn == 'batch':
+            self.norm1 = nn.BatchNorm2d(planes)
+            self.norm2 = nn.BatchNorm2d(planes)
+            if not stride == 1:
+                self.norm3 = nn.BatchNorm2d(planes)
+        
+        elif norm_fn == 'instance':
+            self.norm1 = nn.InstanceNorm2d(planes)
+            self.norm2 = nn.InstanceNorm2d(planes)
+            if not stride == 1:
+                self.norm3 = nn.InstanceNorm2d(planes)
+
+        elif norm_fn == 'none':
+            self.norm1 = nn.Sequential()
+            self.norm2 = nn.Sequential()
+            if not stride == 1:
+                self.norm3 = nn.Sequential()
+
+        if stride == 1:
+            self.downsample = None
+        
+        else:    
+            self.downsample = nn.Sequential(
+                nn.Conv2d(in_planes, planes, kernel_size=1, stride=stride), self.norm3)
+
+
+    def forward(self, x):
+        y = x
+        y = self.relu(self.norm1(self.conv1(y)))
+        y = self.relu(self.norm2(self.conv2(y)))
+
+        if self.downsample is not None:
+            x = self.downsample(x)
+
+        return self.relu(x+y)
+
+
+
+class BottleneckBlock(nn.Module):
+    def __init__(self, in_planes, planes, norm_fn='group', stride=1):
+        super(BottleneckBlock, self).__init__()
+  
+        self.conv1 = nn.Conv2d(in_planes, planes//4, kernel_size=1, padding=0)
+        self.conv2 = nn.Conv2d(planes//4, planes//4, kernel_size=3, padding=1, stride=stride)
+        self.conv3 = nn.Conv2d(planes//4, planes, kernel_size=1, padding=0)
+        self.relu = nn.ReLU(inplace=True)
+
+        num_groups = planes // 8
+
+        if norm_fn == 'group':
+            self.norm1 = nn.GroupNorm(num_groups=num_groups, num_channels=planes//4)
+            self.norm2 = nn.GroupNorm(num_groups=num_groups, num_channels=planes//4)
+            self.norm3 = nn.GroupNorm(num_groups=num_groups, num_channels=planes)
+            if not stride == 1:
+                self.norm4 = nn.GroupNorm(num_groups=num_groups, num_channels=planes)
+        
+        elif norm_fn == 'batch':
+            self.norm1 = nn.BatchNorm2d(planes//4)
+            self.norm2 = nn.BatchNorm2d(planes//4)
+            self.norm3 = nn.BatchNorm2d(planes)
+            if not stride == 1:
+                self.norm4 = nn.BatchNorm2d(planes)
+        
+        elif norm_fn == 'instance':
+            self.norm1 = nn.InstanceNorm2d(planes//4)
+            self.norm2 = nn.InstanceNorm2d(planes//4)
+            self.norm3 = nn.InstanceNorm2d(planes)
+            if not stride == 1:
+                self.norm4 = nn.InstanceNorm2d(planes)
+
+        elif norm_fn == 'none':
+            self.norm1 = nn.Sequential()
+            self.norm2 = nn.Sequential()
+            self.norm3 = nn.Sequential()
+            if not stride == 1:
+                self.norm4 = nn.Sequential()
+
+        if stride == 1:
+            self.downsample = None
+        
+        else:    
+            self.downsample = nn.Sequential(
+                nn.Conv2d(in_planes, planes, kernel_size=1, stride=stride), self.norm4)
+
+
+    def forward(self, x):
+        y = x
+        y = self.relu(self.norm1(self.conv1(y)))
+        y = self.relu(self.norm2(self.conv2(y)))
+        y = self.relu(self.norm3(self.conv3(y)))
+
+        if self.downsample is not None:
+            x = self.downsample(x)
+
+        return self.relu(x+y)
+
+class BasicEncoder(nn.Module):
+    def __init__(self, output_dim=128, norm_fn='batch', dropout=0.0):
+        super(BasicEncoder, self).__init__()
+        self.norm_fn = norm_fn
+
+        if self.norm_fn == 'group':
+            self.norm1 = nn.GroupNorm(num_groups=8, num_channels=64)
+            
+        elif self.norm_fn == 'batch':
+            self.norm1 = nn.BatchNorm2d(64)
+
+        elif self.norm_fn == 'instance':
+            self.norm1 = nn.InstanceNorm2d(64)
+
+        elif self.norm_fn == 'none':
+            self.norm1 = nn.Sequential()
+
+        self.conv1 = nn.Conv2d(3, 64, kernel_size=7, stride=2, padding=3)
+        self.relu1 = nn.ReLU(inplace=True)
+
+        self.in_planes = 64
+        self.layer1 = self._make_layer(64,  stride=1)
+        self.layer2 = self._make_layer(96, stride=2)
+        self.layer3 = self._make_layer(128, stride=2)
+
+        # output convolution
+        self.conv2 = nn.Conv2d(128, output_dim, kernel_size=1)
+
+        self.dropout = None
+        if dropout > 0:
+            self.dropout = nn.Dropout2d(p=dropout)
+
+        for m in self.modules():
+            if isinstance(m, nn.Conv2d):
+                nn.init.kaiming_normal_(m.weight, mode='fan_out', nonlinearity='relu')
+            elif isinstance(m, (nn.BatchNorm2d, nn.InstanceNorm2d, nn.GroupNorm)):
+                if m.weight is not None:
+                    nn.init.constant_(m.weight, 1)
+                if m.bias is not None:
+                    nn.init.constant_(m.bias, 0)
+
+    def _make_layer(self, dim, stride=1):
+        layer1 = ResidualBlock(self.in_planes, dim, self.norm_fn, stride=stride)
+        layer2 = ResidualBlock(dim, dim, self.norm_fn, stride=1)
+        layers = (layer1, layer2)
+        
+        self.in_planes = dim
+        return nn.Sequential(*layers)
+
+
+    def forward(self, x):
+
+        # if input is list, combine batch dimension
+        is_list = isinstance(x, tuple) or isinstance(x, list)
+        if is_list:
+            batch_dim = x[0].shape[0]
+            x = torch.cat(x, dim=0)
+
+        x = self.conv1(x)
+        x = self.norm1(x)
+        x = self.relu1(x)
+
+        x = self.layer1(x)
+        x = self.layer2(x)
+        x = self.layer3(x)
+
+        x = self.conv2(x)
+
+        if self.training and self.dropout is not None:
+            x = self.dropout(x)
+
+        if is_list:
+            x = torch.split(x, [batch_dim, batch_dim], dim=0)
+
+        return x
+
+
+class SmallEncoder(nn.Module):
+    def __init__(self, output_dim=128, norm_fn='batch', dropout=0.0):
+        super(SmallEncoder, self).__init__()
+        self.norm_fn = norm_fn
+
+        if self.norm_fn == 'group':
+            self.norm1 = nn.GroupNorm(num_groups=8, num_channels=32)
+            
+        elif self.norm_fn == 'batch':
+            self.norm1 = nn.BatchNorm2d(32)
+
+        elif self.norm_fn == 'instance':
+            self.norm1 = nn.InstanceNorm2d(32)
+
+        elif self.norm_fn == 'none':
+            self.norm1 = nn.Sequential()
+
+        self.conv1 = nn.Conv2d(3, 32, kernel_size=7, stride=2, padding=3)
+        self.relu1 = nn.ReLU(inplace=True)
+
+        self.in_planes = 32
+        self.layer1 = self._make_layer(32,  stride=1)
+        self.layer2 = self._make_layer(64, stride=2)
+        self.layer3 = self._make_layer(96, stride=2)
+
+        self.dropout = None
+        if dropout > 0:
+            self.dropout = nn.Dropout2d(p=dropout)
+        
+        self.conv2 = nn.Conv2d(96, output_dim, kernel_size=1)
+
+        for m in self.modules():
+            if isinstance(m, nn.Conv2d):
+                nn.init.kaiming_normal_(m.weight, mode='fan_out', nonlinearity='relu')
+            elif isinstance(m, (nn.BatchNorm2d, nn.InstanceNorm2d, nn.GroupNorm)):
+                if m.weight is not None:
+                    nn.init.constant_(m.weight, 1)
+                if m.bias is not None:
+                    nn.init.constant_(m.bias, 0)
+
+    def _make_layer(self, dim, stride=1):
+        layer1 = BottleneckBlock(self.in_planes, dim, self.norm_fn, stride=stride)
+        layer2 = BottleneckBlock(dim, dim, self.norm_fn, stride=1)
+        layers = (layer1, layer2)
+    
+        self.in_planes = dim
+        return nn.Sequential(*layers)
+
+
+    def forward(self, x):
+
+        # if input is list, combine batch dimension
+        is_list = isinstance(x, tuple) or isinstance(x, list)
+        if is_list:
+            batch_dim = x[0].shape[0]
+            x = torch.cat(x, dim=0)
+
+        x = self.conv1(x)
+        x = self.norm1(x)
+        x = self.relu1(x)
+
+        x = self.layer1(x)
+        x = self.layer2(x)
+        x = self.layer3(x)
+        x = self.conv2(x)
+
+        if self.training and self.dropout is not None:
+            x = self.dropout(x)
+
+        if is_list:
+            x = torch.split(x, [batch_dim, batch_dim], dim=0)
+
+        return x
diff --git a/RAFT/core/raft.py b/RAFT/core/raft.py
new file mode 100755
index 0000000..ff412cb
--- /dev/null
+++ b/RAFT/core/raft.py
@@ -0,0 +1,145 @@
+import numpy as np
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+
+from update import BasicUpdateBlock, SmallUpdateBlock
+from extractor import BasicEncoder, SmallEncoder
+from corr import CorrBlock, AlternateCorrBlock
+from RAFT.core.utils.utils import bilinear_sampler, coords_grid, upflow8
+
+try:
+    autocast = torch.cuda.amp.autocast
+except:
+    # dummy autocast for PyTorch < 1.6
+    class autocast:
+        def __init__(self, enabled):
+            pass
+        def __enter__(self):
+            pass
+        def __exit__(self, *args):
+            pass
+
+
+class RAFT(nn.Module):
+    def __init__(self, args):
+        super(RAFT, self).__init__()
+        self.args = args
+        #args.small = True
+
+        if args.small:
+            self.hidden_dim = hdim = 96
+            self.context_dim = cdim = 64
+            args.corr_levels = 4
+            args.corr_radius = 3
+        
+        else:
+            self.hidden_dim = hdim = 128
+            self.context_dim = cdim = 128
+            args.corr_levels = 4
+            args.corr_radius = 4
+
+        if 'dropout' not in self.args:
+            self.args.dropout = 0
+
+        if 'alternate_corr' not in self.args:
+            self.args.alternate_corr = False
+
+        # feature network, context network, and update block
+        if args.small:
+            self.fnet = SmallEncoder(output_dim=128, norm_fn='instance', dropout=args.dropout)        
+            self.cnet = SmallEncoder(output_dim=hdim+cdim, norm_fn='none', dropout=args.dropout)
+            self.update_block = SmallUpdateBlock(self.args, hidden_dim=hdim)
+
+        else:
+            self.fnet = BasicEncoder(output_dim=256, norm_fn='instance', dropout=args.dropout)        
+            self.cnet = BasicEncoder(output_dim=hdim+cdim, norm_fn='batch', dropout=args.dropout)
+            self.update_block = BasicUpdateBlock(self.args, hidden_dim=hdim)
+
+    def freeze_bn(self):
+        for m in self.modules():
+            if isinstance(m, nn.BatchNorm2d):
+                m.eval()
+
+    def initialize_flow(self, img):
+        """ Flow is represented as difference between two coordinate grids flow = coords1 - coords0"""
+        N, C, H, W = img.shape
+        coords0 = coords_grid(N, H//8, W//8).to(img.device)
+        coords1 = coords_grid(N, H//8, W//8).to(img.device)
+
+        # optical flow computed as difference: flow = coords1 - coords0
+        return coords0, coords1
+
+    def upsample_flow(self, flow, mask):
+        """ Upsample flow field [H/8, W/8, 2] -> [H, W, 2] using convex combination """
+        N, _, H, W = flow.shape
+        mask = mask.view(N, 1, 9, 8, 8, H, W)
+        mask = torch.softmax(mask, dim=2)
+
+        up_flow = F.unfold(8 * flow, [3,3], padding=1)
+        up_flow = up_flow.view(N, 2, 9, 1, 1, H, W)
+
+        up_flow = torch.sum(mask * up_flow, dim=2)
+        up_flow = up_flow.permute(0, 1, 4, 2, 5, 3)
+        return up_flow.reshape(N, 2, 8*H, 8*W)
+
+
+    def forward(self, image1, image2, iters=12, flow_init=None, upsample=True, test_mode=False):
+        """ Estimate optical flow between pair of frames """
+
+        image1 = 2 * (image1 / 255.0) - 1.0
+        image2 = 2 * (image2 / 255.0) - 1.0
+
+        image1 = image1.contiguous()
+        image2 = image2.contiguous()
+
+        hdim = self.hidden_dim
+        cdim = self.context_dim
+
+        # run the feature network
+        with autocast(enabled=self.args.mixed_precision):
+            fmap1, fmap2 = self.fnet([image1, image2])        
+        
+        fmap1 = fmap1.float()
+        fmap2 = fmap2.float()
+        if self.args.alternate_corr:
+            corr_fn = AlternateCorrBlock(fmap1, fmap2, radius=self.args.corr_radius)
+        else:
+            corr_fn = CorrBlock(fmap1, fmap2, radius=self.args.corr_radius)
+
+        # run the context network
+        with autocast(enabled=self.args.mixed_precision):
+            cnet = self.cnet(image1)
+            net, inp = torch.split(cnet, [hdim, cdim], dim=1)
+            net = torch.tanh(net)
+            inp = torch.relu(inp)
+
+        coords0, coords1 = self.initialize_flow(image1)
+
+        if flow_init is not None:
+            coords1 = coords1 + flow_init
+
+        flow_predictions = []
+        for itr in range(iters):
+            coords1 = coords1.detach()
+            corr = corr_fn(coords1) # index correlation volume
+
+            flow = coords1 - coords0
+            with autocast(enabled=self.args.mixed_precision):
+                net, up_mask, delta_flow = self.update_block(net, inp, corr, flow)
+
+            # F(t+1) = F(t) + \Delta(t)
+            coords1 = coords1 + delta_flow
+
+            # upsample predictions
+            if up_mask is None:
+                flow_up = upflow8(coords1 - coords0)
+            else:
+                flow_up = self.upsample_flow(coords1 - coords0, up_mask)
+            
+            flow_predictions.append(flow_up)
+
+        if test_mode:
+            return coords1 - coords0, flow_up
+            
+        return flow_predictions
diff --git a/RAFT/core/update.py b/RAFT/core/update.py
new file mode 100755
index 0000000..f940497
--- /dev/null
+++ b/RAFT/core/update.py
@@ -0,0 +1,139 @@
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+
+
+class FlowHead(nn.Module):
+    def __init__(self, input_dim=128, hidden_dim=256):
+        super(FlowHead, self).__init__()
+        self.conv1 = nn.Conv2d(input_dim, hidden_dim, 3, padding=1)
+        self.conv2 = nn.Conv2d(hidden_dim, 2, 3, padding=1)
+        self.relu = nn.ReLU(inplace=True)
+
+    def forward(self, x):
+        return self.conv2(self.relu(self.conv1(x)))
+
+class ConvGRU(nn.Module):
+    def __init__(self, hidden_dim=128, input_dim=192+128):
+        super(ConvGRU, self).__init__()
+        self.convz = nn.Conv2d(hidden_dim+input_dim, hidden_dim, 3, padding=1)
+        self.convr = nn.Conv2d(hidden_dim+input_dim, hidden_dim, 3, padding=1)
+        self.convq = nn.Conv2d(hidden_dim+input_dim, hidden_dim, 3, padding=1)
+
+    def forward(self, h, x):
+        hx = torch.cat([h, x], dim=1)
+
+        z = torch.sigmoid(self.convz(hx))
+        r = torch.sigmoid(self.convr(hx))
+        q = torch.tanh(self.convq(torch.cat([r*h, x], dim=1)))
+
+        h = (1-z) * h + z * q
+        return h
+
+class SepConvGRU(nn.Module):
+    def __init__(self, hidden_dim=128, input_dim=192+128):
+        super(SepConvGRU, self).__init__()
+        self.convz1 = nn.Conv2d(hidden_dim+input_dim, hidden_dim, (1,5), padding=(0,2))
+        self.convr1 = nn.Conv2d(hidden_dim+input_dim, hidden_dim, (1,5), padding=(0,2))
+        self.convq1 = nn.Conv2d(hidden_dim+input_dim, hidden_dim, (1,5), padding=(0,2))
+
+        self.convz2 = nn.Conv2d(hidden_dim+input_dim, hidden_dim, (5,1), padding=(2,0))
+        self.convr2 = nn.Conv2d(hidden_dim+input_dim, hidden_dim, (5,1), padding=(2,0))
+        self.convq2 = nn.Conv2d(hidden_dim+input_dim, hidden_dim, (5,1), padding=(2,0))
+
+
+    def forward(self, h, x):
+        # horizontal
+        hx = torch.cat([h, x], dim=1)
+        z = torch.sigmoid(self.convz1(hx))
+        r = torch.sigmoid(self.convr1(hx))
+        q = torch.tanh(self.convq1(torch.cat([r*h, x], dim=1)))        
+        h = (1-z) * h + z * q
+
+        # vertical
+        hx = torch.cat([h, x], dim=1)
+        z = torch.sigmoid(self.convz2(hx))
+        r = torch.sigmoid(self.convr2(hx))
+        q = torch.tanh(self.convq2(torch.cat([r*h, x], dim=1)))       
+        h = (1-z) * h + z * q
+
+        return h
+
+class SmallMotionEncoder(nn.Module):
+    def __init__(self, args):
+        super(SmallMotionEncoder, self).__init__()
+        cor_planes = args.corr_levels * (2*args.corr_radius + 1)**2
+        self.convc1 = nn.Conv2d(cor_planes, 96, 1, padding=0)
+        self.convf1 = nn.Conv2d(2, 64, 7, padding=3)
+        self.convf2 = nn.Conv2d(64, 32, 3, padding=1)
+        self.conv = nn.Conv2d(128, 80, 3, padding=1)
+
+    def forward(self, flow, corr):
+        cor = F.relu(self.convc1(corr))
+        flo = F.relu(self.convf1(flow))
+        flo = F.relu(self.convf2(flo))
+        cor_flo = torch.cat([cor, flo], dim=1)
+        out = F.relu(self.conv(cor_flo))
+        return torch.cat([out, flow], dim=1)
+
+class BasicMotionEncoder(nn.Module):
+    def __init__(self, args):
+        super(BasicMotionEncoder, self).__init__()
+        cor_planes = args.corr_levels * (2*args.corr_radius + 1)**2
+        self.convc1 = nn.Conv2d(cor_planes, 256, 1, padding=0)
+        self.convc2 = nn.Conv2d(256, 192, 3, padding=1)
+        self.convf1 = nn.Conv2d(2, 128, 7, padding=3)
+        self.convf2 = nn.Conv2d(128, 64, 3, padding=1)
+        self.conv = nn.Conv2d(64+192, 128-2, 3, padding=1)
+
+    def forward(self, flow, corr):
+        cor = F.relu(self.convc1(corr))
+        cor = F.relu(self.convc2(cor))
+        flo = F.relu(self.convf1(flow))
+        flo = F.relu(self.convf2(flo))
+
+        cor_flo = torch.cat([cor, flo], dim=1)
+        out = F.relu(self.conv(cor_flo))
+        return torch.cat([out, flow], dim=1)
+
+class SmallUpdateBlock(nn.Module):
+    def __init__(self, args, hidden_dim=96):
+        super(SmallUpdateBlock, self).__init__()
+        self.encoder = SmallMotionEncoder(args)
+        self.gru = ConvGRU(hidden_dim=hidden_dim, input_dim=82+64)
+        self.flow_head = FlowHead(hidden_dim, hidden_dim=128)
+
+    def forward(self, net, inp, corr, flow):
+        motion_features = self.encoder(flow, corr)
+        inp = torch.cat([inp, motion_features], dim=1)
+        net = self.gru(net, inp)
+        delta_flow = self.flow_head(net)
+
+        return net, None, delta_flow
+
+class BasicUpdateBlock(nn.Module):
+    def __init__(self, args, hidden_dim=128, input_dim=128):
+        super(BasicUpdateBlock, self).__init__()
+        self.args = args
+        self.encoder = BasicMotionEncoder(args)
+        self.gru = SepConvGRU(hidden_dim=hidden_dim, input_dim=128+hidden_dim)
+        self.flow_head = FlowHead(hidden_dim, hidden_dim=256)
+
+        self.mask = nn.Sequential(
+            nn.Conv2d(128, 256, 3, padding=1),
+            nn.ReLU(inplace=True),
+            nn.Conv2d(256, 64*9, 1, padding=0))
+
+    def forward(self, net, inp, corr, flow, upsample=True):
+        motion_features = self.encoder(flow, corr)
+        inp = torch.cat([inp, motion_features], dim=1)
+
+        net = self.gru(net, inp)
+        delta_flow = self.flow_head(net)
+
+        # scale mask to balence gradients
+        mask = .25 * self.mask(net)
+        return net, mask, delta_flow
+
+
+
diff --git a/RAFT/core/utils/__init__.py b/RAFT/core/utils/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/RAFT/core/utils/augmentor.py b/RAFT/core/utils/augmentor.py
new file mode 100755
index 0000000..e81c4f2
--- /dev/null
+++ b/RAFT/core/utils/augmentor.py
@@ -0,0 +1,246 @@
+import numpy as np
+import random
+import math
+from PIL import Image
+
+import cv2
+cv2.setNumThreads(0)
+cv2.ocl.setUseOpenCL(False)
+
+import torch
+from torchvision.transforms import ColorJitter
+import torch.nn.functional as F
+
+
+class FlowAugmentor:
+    def __init__(self, crop_size, min_scale=-0.2, max_scale=0.5, do_flip=True):
+        
+        # spatial augmentation params
+        self.crop_size = crop_size
+        self.min_scale = min_scale
+        self.max_scale = max_scale
+        self.spatial_aug_prob = 0.8
+        self.stretch_prob = 0.8
+        self.max_stretch = 0.2
+
+        # flip augmentation params
+        self.do_flip = do_flip
+        self.h_flip_prob = 0.5
+        self.v_flip_prob = 0.1
+
+        # photometric augmentation params
+        self.photo_aug = ColorJitter(brightness=0.4, contrast=0.4, saturation=0.4, hue=0.5/3.14)
+        self.asymmetric_color_aug_prob = 0.2
+        self.eraser_aug_prob = 0.5
+
+    def color_transform(self, img1, img2):
+        """ Photometric augmentation """
+
+        # asymmetric
+        if np.random.rand() < self.asymmetric_color_aug_prob:
+            img1 = np.array(self.photo_aug(Image.fromarray(img1)), dtype=np.uint8)
+            img2 = np.array(self.photo_aug(Image.fromarray(img2)), dtype=np.uint8)
+
+        # symmetric
+        else:
+            image_stack = np.concatenate([img1, img2], axis=0)
+            image_stack = np.array(self.photo_aug(Image.fromarray(image_stack)), dtype=np.uint8)
+            img1, img2 = np.split(image_stack, 2, axis=0)
+
+        return img1, img2
+
+    def eraser_transform(self, img1, img2, bounds=[50, 100]):
+        """ Occlusion augmentation """
+
+        ht, wd = img1.shape[:2]
+        if np.random.rand() < self.eraser_aug_prob:
+            mean_color = np.mean(img2.reshape(-1, 3), axis=0)
+            for _ in range(np.random.randint(1, 3)):
+                x0 = np.random.randint(0, wd)
+                y0 = np.random.randint(0, ht)
+                dx = np.random.randint(bounds[0], bounds[1])
+                dy = np.random.randint(bounds[0], bounds[1])
+                img2[y0:y0+dy, x0:x0+dx, :] = mean_color
+
+        return img1, img2
+
+    def spatial_transform(self, img1, img2, flow):
+        # randomly sample scale
+        ht, wd = img1.shape[:2]
+        min_scale = np.maximum(
+            (self.crop_size[0] + 8) / float(ht), 
+            (self.crop_size[1] + 8) / float(wd))
+
+        scale = 2 ** np.random.uniform(self.min_scale, self.max_scale)
+        scale_x = scale
+        scale_y = scale
+        if np.random.rand() < self.stretch_prob:
+            scale_x *= 2 ** np.random.uniform(-self.max_stretch, self.max_stretch)
+            scale_y *= 2 ** np.random.uniform(-self.max_stretch, self.max_stretch)
+        
+        scale_x = np.clip(scale_x, min_scale, None)
+        scale_y = np.clip(scale_y, min_scale, None)
+
+        if np.random.rand() < self.spatial_aug_prob:
+            # rescale the images
+            img1 = cv2.resize(img1, None, fx=scale_x, fy=scale_y, interpolation=cv2.INTER_LINEAR)
+            img2 = cv2.resize(img2, None, fx=scale_x, fy=scale_y, interpolation=cv2.INTER_LINEAR)
+            flow = cv2.resize(flow, None, fx=scale_x, fy=scale_y, interpolation=cv2.INTER_LINEAR)
+            flow = flow * [scale_x, scale_y]
+
+        if self.do_flip:
+            if np.random.rand() < self.h_flip_prob: # h-flip
+                img1 = img1[:, ::-1]
+                img2 = img2[:, ::-1]
+                flow = flow[:, ::-1] * [-1.0, 1.0]
+
+            if np.random.rand() < self.v_flip_prob: # v-flip
+                img1 = img1[::-1, :]
+                img2 = img2[::-1, :]
+                flow = flow[::-1, :] * [1.0, -1.0]
+
+        y0 = np.random.randint(0, img1.shape[0] - self.crop_size[0])
+        x0 = np.random.randint(0, img1.shape[1] - self.crop_size[1])
+        
+        img1 = img1[y0:y0+self.crop_size[0], x0:x0+self.crop_size[1]]
+        img2 = img2[y0:y0+self.crop_size[0], x0:x0+self.crop_size[1]]
+        flow = flow[y0:y0+self.crop_size[0], x0:x0+self.crop_size[1]]
+
+        return img1, img2, flow
+
+    def __call__(self, img1, img2, flow):
+        img1, img2 = self.color_transform(img1, img2)
+        img1, img2 = self.eraser_transform(img1, img2)
+        img1, img2, flow = self.spatial_transform(img1, img2, flow)
+
+        img1 = np.ascontiguousarray(img1)
+        img2 = np.ascontiguousarray(img2)
+        flow = np.ascontiguousarray(flow)
+
+        return img1, img2, flow
+
+class SparseFlowAugmentor:
+    def __init__(self, crop_size, min_scale=-0.2, max_scale=0.5, do_flip=False):
+        # spatial augmentation params
+        self.crop_size = crop_size
+        self.min_scale = min_scale
+        self.max_scale = max_scale
+        self.spatial_aug_prob = 0.8
+        self.stretch_prob = 0.8
+        self.max_stretch = 0.2
+
+        # flip augmentation params
+        self.do_flip = do_flip
+        self.h_flip_prob = 0.5
+        self.v_flip_prob = 0.1
+
+        # photometric augmentation params
+        self.photo_aug = ColorJitter(brightness=0.3, contrast=0.3, saturation=0.3, hue=0.3/3.14)
+        self.asymmetric_color_aug_prob = 0.2
+        self.eraser_aug_prob = 0.5
+        
+    def color_transform(self, img1, img2):
+        image_stack = np.concatenate([img1, img2], axis=0)
+        image_stack = np.array(self.photo_aug(Image.fromarray(image_stack)), dtype=np.uint8)
+        img1, img2 = np.split(image_stack, 2, axis=0)
+        return img1, img2
+
+    def eraser_transform(self, img1, img2):
+        ht, wd = img1.shape[:2]
+        if np.random.rand() < self.eraser_aug_prob:
+            mean_color = np.mean(img2.reshape(-1, 3), axis=0)
+            for _ in range(np.random.randint(1, 3)):
+                x0 = np.random.randint(0, wd)
+                y0 = np.random.randint(0, ht)
+                dx = np.random.randint(50, 100)
+                dy = np.random.randint(50, 100)
+                img2[y0:y0+dy, x0:x0+dx, :] = mean_color
+
+        return img1, img2
+
+    def resize_sparse_flow_map(self, flow, valid, fx=1.0, fy=1.0):
+        ht, wd = flow.shape[:2]
+        coords = np.meshgrid(np.arange(wd), np.arange(ht))
+        coords = np.stack(coords, axis=-1)
+
+        coords = coords.reshape(-1, 2).astype(np.float32)
+        flow = flow.reshape(-1, 2).astype(np.float32)
+        valid = valid.reshape(-1).astype(np.float32)
+
+        coords0 = coords[valid>=1]
+        flow0 = flow[valid>=1]
+
+        ht1 = int(round(ht * fy))
+        wd1 = int(round(wd * fx))
+
+        coords1 = coords0 * [fx, fy]
+        flow1 = flow0 * [fx, fy]
+
+        xx = np.round(coords1[:,0]).astype(np.int32)
+        yy = np.round(coords1[:,1]).astype(np.int32)
+
+        v = (xx > 0) & (xx < wd1) & (yy > 0) & (yy < ht1)
+        xx = xx[v]
+        yy = yy[v]
+        flow1 = flow1[v]
+
+        flow_img = np.zeros([ht1, wd1, 2], dtype=np.float32)
+        valid_img = np.zeros([ht1, wd1], dtype=np.int32)
+
+        flow_img[yy, xx] = flow1
+        valid_img[yy, xx] = 1
+
+        return flow_img, valid_img
+
+    def spatial_transform(self, img1, img2, flow, valid):
+        # randomly sample scale
+
+        ht, wd = img1.shape[:2]
+        min_scale = np.maximum(
+            (self.crop_size[0] + 1) / float(ht), 
+            (self.crop_size[1] + 1) / float(wd))
+
+        scale = 2 ** np.random.uniform(self.min_scale, self.max_scale)
+        scale_x = np.clip(scale, min_scale, None)
+        scale_y = np.clip(scale, min_scale, None)
+
+        if np.random.rand() < self.spatial_aug_prob:
+            # rescale the images
+            img1 = cv2.resize(img1, None, fx=scale_x, fy=scale_y, interpolation=cv2.INTER_LINEAR)
+            img2 = cv2.resize(img2, None, fx=scale_x, fy=scale_y, interpolation=cv2.INTER_LINEAR)
+            flow, valid = self.resize_sparse_flow_map(flow, valid, fx=scale_x, fy=scale_y)
+
+        if self.do_flip:
+            if np.random.rand() < 0.5: # h-flip
+                img1 = img1[:, ::-1]
+                img2 = img2[:, ::-1]
+                flow = flow[:, ::-1] * [-1.0, 1.0]
+                valid = valid[:, ::-1]
+
+        margin_y = 20
+        margin_x = 50
+
+        y0 = np.random.randint(0, img1.shape[0] - self.crop_size[0] + margin_y)
+        x0 = np.random.randint(-margin_x, img1.shape[1] - self.crop_size[1] + margin_x)
+
+        y0 = np.clip(y0, 0, img1.shape[0] - self.crop_size[0])
+        x0 = np.clip(x0, 0, img1.shape[1] - self.crop_size[1])
+
+        img1 = img1[y0:y0+self.crop_size[0], x0:x0+self.crop_size[1]]
+        img2 = img2[y0:y0+self.crop_size[0], x0:x0+self.crop_size[1]]
+        flow = flow[y0:y0+self.crop_size[0], x0:x0+self.crop_size[1]]
+        valid = valid[y0:y0+self.crop_size[0], x0:x0+self.crop_size[1]]
+        return img1, img2, flow, valid
+
+
+    def __call__(self, img1, img2, flow, valid):
+        img1, img2 = self.color_transform(img1, img2)
+        img1, img2 = self.eraser_transform(img1, img2)
+        img1, img2, flow, valid = self.spatial_transform(img1, img2, flow, valid)
+
+        img1 = np.ascontiguousarray(img1)
+        img2 = np.ascontiguousarray(img2)
+        flow = np.ascontiguousarray(flow)
+        valid = np.ascontiguousarray(valid)
+
+        return img1, img2, flow, valid
diff --git a/RAFT/core/utils/flow_viz.py b/RAFT/core/utils/flow_viz.py
new file mode 100755
index 0000000..7c75024
--- /dev/null
+++ b/RAFT/core/utils/flow_viz.py
@@ -0,0 +1,132 @@
+# Flow visualization code used from https://github.com/tomrunia/OpticalFlow_Visualization
+
+
+# MIT License
+#
+# Copyright (c) 2018 Tom Runia
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to conditions.
+#
+# Author: Tom Runia
+# Date Created: 2018-08-03
+
+import numpy as np
+
+def make_colorwheel():
+    """
+    Generates a color wheel for optical flow visualization as presented in:
+        Baker et al. "A Database and Evaluation Methodology for Optical Flow" (ICCV, 2007)
+        URL: http://vision.middlebury.edu/flow/flowEval-iccv07.pdf
+
+    Code follows the original C++ source code of Daniel Scharstein.
+    Code follows the the Matlab source code of Deqing Sun.
+
+    Returns:
+        np.ndarray: Color wheel
+    """
+
+    RY = 15
+    YG = 6
+    GC = 4
+    CB = 11
+    BM = 13
+    MR = 6
+
+    ncols = RY + YG + GC + CB + BM + MR
+    colorwheel = np.zeros((ncols, 3))
+    col = 0
+
+    # RY
+    colorwheel[0:RY, 0] = 255
+    colorwheel[0:RY, 1] = np.floor(255*np.arange(0,RY)/RY)
+    col = col+RY
+    # YG
+    colorwheel[col:col+YG, 0] = 255 - np.floor(255*np.arange(0,YG)/YG)
+    colorwheel[col:col+YG, 1] = 255
+    col = col+YG
+    # GC
+    colorwheel[col:col+GC, 1] = 255
+    colorwheel[col:col+GC, 2] = np.floor(255*np.arange(0,GC)/GC)
+    col = col+GC
+    # CB
+    colorwheel[col:col+CB, 1] = 255 - np.floor(255*np.arange(CB)/CB)
+    colorwheel[col:col+CB, 2] = 255
+    col = col+CB
+    # BM
+    colorwheel[col:col+BM, 2] = 255
+    colorwheel[col:col+BM, 0] = np.floor(255*np.arange(0,BM)/BM)
+    col = col+BM
+    # MR
+    colorwheel[col:col+MR, 2] = 255 - np.floor(255*np.arange(MR)/MR)
+    colorwheel[col:col+MR, 0] = 255
+    return colorwheel
+
+
+def flow_uv_to_colors(u, v, convert_to_bgr=False):
+    """
+    Applies the flow color wheel to (possibly clipped) flow components u and v.
+
+    According to the C++ source code of Daniel Scharstein
+    According to the Matlab source code of Deqing Sun
+
+    Args:
+        u (np.ndarray): Input horizontal flow of shape [H,W]
+        v (np.ndarray): Input vertical flow of shape [H,W]
+        convert_to_bgr (bool, optional): Convert output image to BGR. Defaults to False.
+
+    Returns:
+        np.ndarray: Flow visualization image of shape [H,W,3]
+    """
+    flow_image = np.zeros((u.shape[0], u.shape[1], 3), np.uint8)
+    colorwheel = make_colorwheel()  # shape [55x3]
+    ncols = colorwheel.shape[0]
+    rad = np.sqrt(np.square(u) + np.square(v))
+    a = np.arctan2(-v, -u)/np.pi
+    fk = (a+1) / 2*(ncols-1)
+    k0 = np.floor(fk).astype(np.int32)
+    k1 = k0 + 1
+    k1[k1 == ncols] = 0
+    f = fk - k0
+    for i in range(colorwheel.shape[1]):
+        tmp = colorwheel[:,i]
+        col0 = tmp[k0] / 255.0
+        col1 = tmp[k1] / 255.0
+        col = (1-f)*col0 + f*col1
+        idx = (rad <= 1)
+        col[idx]  = 1 - rad[idx] * (1-col[idx])
+        col[~idx] = col[~idx] * 0.75   # out of range
+        # Note the 2-i => BGR instead of RGB
+        ch_idx = 2-i if convert_to_bgr else i
+        flow_image[:,:,ch_idx] = np.floor(255 * col)
+    return flow_image
+
+
+def flow_to_image(flow_uv, clip_flow=None, convert_to_bgr=False):
+    """
+    Expects a two dimensional flow image of shape.
+
+    Args:
+        flow_uv (np.ndarray): Flow UV image of shape [H,W,2]
+        clip_flow (float, optional): Clip maximum of flow values. Defaults to None.
+        convert_to_bgr (bool, optional): Convert output image to BGR. Defaults to False.
+
+    Returns:
+        np.ndarray: Flow visualization image of shape [H,W,3]
+    """
+    assert flow_uv.ndim == 3, 'input flow must have three dimensions'
+    assert flow_uv.shape[2] == 2, 'input flow must have shape [H,W,2]'
+    if clip_flow is not None:
+        flow_uv = np.clip(flow_uv, 0, clip_flow)
+    u = flow_uv[:,:,0]
+    v = flow_uv[:,:,1]
+    rad = np.sqrt(np.square(u) + np.square(v))
+    rad_max = np.max(rad)
+    epsilon = 1e-5
+    u = u / (rad_max + epsilon)
+    v = v / (rad_max + epsilon)
+    return flow_uv_to_colors(u, v, convert_to_bgr)
diff --git a/RAFT/core/utils/frame_utils.py b/RAFT/core/utils/frame_utils.py
new file mode 100755
index 0000000..6c49113
--- /dev/null
+++ b/RAFT/core/utils/frame_utils.py
@@ -0,0 +1,137 @@
+import numpy as np
+from PIL import Image
+from os.path import *
+import re
+
+import cv2
+cv2.setNumThreads(0)
+cv2.ocl.setUseOpenCL(False)
+
+TAG_CHAR = np.array([202021.25], np.float32)
+
+def readFlow(fn):
+    """ Read .flo file in Middlebury format"""
+    # Code adapted from:
+    # http://stackoverflow.com/questions/28013200/reading-middlebury-flow-files-with-python-bytes-array-numpy
+
+    # WARNING: this will work on little-endian architectures (eg Intel x86) only!
+    # print 'fn = %s'%(fn)
+    with open(fn, 'rb') as f:
+        magic = np.fromfile(f, np.float32, count=1)
+        if 202021.25 != magic:
+            print('Magic number incorrect. Invalid .flo file')
+            return None
+        else:
+            w = np.fromfile(f, np.int32, count=1)
+            h = np.fromfile(f, np.int32, count=1)
+            # print 'Reading %d x %d flo file\n' % (w, h)
+            data = np.fromfile(f, np.float32, count=2*int(w)*int(h))
+            # Reshape data into 3D array (columns, rows, bands)
+            # The reshape here is for visualization, the original code is (w,h,2)
+            return np.resize(data, (int(h), int(w), 2))
+
+def readPFM(file):
+    file = open(file, 'rb')
+
+    color = None
+    width = None
+    height = None
+    scale = None
+    endian = None
+
+    header = file.readline().rstrip()
+    if header == b'PF':
+        color = True
+    elif header == b'Pf':
+        color = False
+    else:
+        raise Exception('Not a PFM file.')
+
+    dim_match = re.match(rb'^(\d+)\s(\d+)\s$', file.readline())
+    if dim_match:
+        width, height = map(int, dim_match.groups())
+    else:
+        raise Exception('Malformed PFM header.')
+
+    scale = float(file.readline().rstrip())
+    if scale < 0: # little-endian
+        endian = '<'
+        scale = -scale
+    else:
+        endian = '>' # big-endian
+
+    data = np.fromfile(file, endian + 'f')
+    shape = (height, width, 3) if color else (height, width)
+
+    data = np.reshape(data, shape)
+    data = np.flipud(data)
+    return data
+
+def writeFlow(filename,uv,v=None):
+    """ Write optical flow to file.
+    
+    If v is None, uv is assumed to contain both u and v channels,
+    stacked in depth.
+    Original code by Deqing Sun, adapted from Daniel Scharstein.
+    """
+    nBands = 2
+
+    if v is None:
+        assert(uv.ndim == 3)
+        assert(uv.shape[2] == 2)
+        u = uv[:,:,0]
+        v = uv[:,:,1]
+    else:
+        u = uv
+
+    assert(u.shape == v.shape)
+    height,width = u.shape
+    f = open(filename,'wb')
+    # write the header
+    f.write(TAG_CHAR)
+    np.array(width).astype(np.int32).tofile(f)
+    np.array(height).astype(np.int32).tofile(f)
+    # arrange into matrix form
+    tmp = np.zeros((height, width*nBands))
+    tmp[:,np.arange(width)*2] = u
+    tmp[:,np.arange(width)*2 + 1] = v
+    tmp.astype(np.float32).tofile(f)
+    f.close()
+
+
+def readFlowKITTI(filename):
+    flow = cv2.imread(filename, cv2.IMREAD_ANYDEPTH|cv2.IMREAD_COLOR)
+    flow = flow[:,:,::-1].astype(np.float32)
+    flow, valid = flow[:, :, :2], flow[:, :, 2]
+    flow = (flow - 2**15) / 64.0
+    return flow, valid
+
+def readDispKITTI(filename):
+    disp = cv2.imread(filename, cv2.IMREAD_ANYDEPTH) / 256.0
+    valid = disp > 0.0
+    flow = np.stack([-disp, np.zeros_like(disp)], -1)
+    return flow, valid
+
+
+def writeFlowKITTI(filename, uv):
+    uv = 64.0 * uv + 2**15
+    valid = np.ones([uv.shape[0], uv.shape[1], 1])
+    uv = np.concatenate([uv, valid], axis=-1).astype(np.uint16)
+    cv2.imwrite(filename, uv[..., ::-1])
+    
+
+def read_gen(file_name, pil=False):
+    ext = splitext(file_name)[-1]
+    if ext == '.png' or ext == '.jpeg' or ext == '.ppm' or ext == '.jpg':
+        return Image.open(file_name)
+    elif ext == '.bin' or ext == '.raw':
+        return np.load(file_name)
+    elif ext == '.flo':
+        return readFlow(file_name).astype(np.float32)
+    elif ext == '.pfm':
+        flow = readPFM(file_name).astype(np.float32)
+        if len(flow.shape) == 2:
+            return flow
+        else:
+            return flow[:, :, :-1]
+    return []
\ No newline at end of file
diff --git a/RAFT/core/utils/utils.py b/RAFT/core/utils/utils.py
new file mode 100755
index 0000000..5f32d28
--- /dev/null
+++ b/RAFT/core/utils/utils.py
@@ -0,0 +1,82 @@
+import torch
+import torch.nn.functional as F
+import numpy as np
+from scipy import interpolate
+
+
+class InputPadder:
+    """ Pads images such that dimensions are divisible by 8 """
+    def __init__(self, dims, mode='sintel'):
+        self.ht, self.wd = dims[-2:]
+        pad_ht = (((self.ht // 8) + 1) * 8 - self.ht) % 8
+        pad_wd = (((self.wd // 8) + 1) * 8 - self.wd) % 8
+        if mode == 'sintel':
+            self._pad = [pad_wd//2, pad_wd - pad_wd//2, pad_ht//2, pad_ht - pad_ht//2]
+        else:
+            self._pad = [pad_wd//2, pad_wd - pad_wd//2, 0, pad_ht]
+
+    def pad(self, *inputs):
+        return [F.pad(x, self._pad, mode='replicate') for x in inputs]
+
+    def unpad(self,x):
+        ht, wd = x.shape[-2:]
+        c = [self._pad[2], ht-self._pad[3], self._pad[0], wd-self._pad[1]]
+        return x[..., c[0]:c[1], c[2]:c[3]]
+
+def forward_interpolate(flow):
+    flow = flow.detach().cpu().numpy()
+    dx, dy = flow[0], flow[1]
+
+    ht, wd = dx.shape
+    x0, y0 = np.meshgrid(np.arange(wd), np.arange(ht))
+
+    x1 = x0 + dx
+    y1 = y0 + dy
+    
+    x1 = x1.reshape(-1)
+    y1 = y1.reshape(-1)
+    dx = dx.reshape(-1)
+    dy = dy.reshape(-1)
+
+    valid = (x1 > 0) & (x1 < wd) & (y1 > 0) & (y1 < ht)
+    x1 = x1[valid]
+    y1 = y1[valid]
+    dx = dx[valid]
+    dy = dy[valid]
+
+    flow_x = interpolate.griddata(
+        (x1, y1), dx, (x0, y0), method='nearest', fill_value=0)
+
+    flow_y = interpolate.griddata(
+        (x1, y1), dy, (x0, y0), method='nearest', fill_value=0)
+
+    flow = np.stack([flow_x, flow_y], axis=0)
+    return torch.from_numpy(flow).float()
+
+
+def bilinear_sampler(img, coords, mode='bilinear', mask=False):
+    """ Wrapper for grid_sample, uses pixel coordinates """
+    H, W = img.shape[-2:]
+    xgrid, ygrid = coords.split([1,1], dim=-1)
+    xgrid = 2*xgrid/(W-1) - 1
+    ygrid = 2*ygrid/(H-1) - 1
+
+    grid = torch.cat([xgrid, ygrid], dim=-1)
+    img = F.grid_sample(img, grid, align_corners=True)
+
+    if mask:
+        mask = (xgrid > -1) & (ygrid > -1) & (xgrid < 1) & (ygrid < 1)
+        return img, mask.float()
+
+    return img
+
+
+def coords_grid(batch, ht, wd):
+    coords = torch.meshgrid(torch.arange(ht), torch.arange(wd))
+    coords = torch.stack(coords[::-1], dim=0).float()
+    return coords[None].repeat(batch, 1, 1, 1)
+
+
+def upflow8(flow, mode='bilinear'):
+    new_size = (8 * flow.shape[2], 8 * flow.shape[3])
+    return  8 * F.interpolate(flow, size=new_size, mode=mode, align_corners=True)
diff --git a/RAFT/demo.py b/RAFT/demo.py
new file mode 100755
index 0000000..5abc1da
--- /dev/null
+++ b/RAFT/demo.py
@@ -0,0 +1,75 @@
+import sys
+sys.path.append('core')
+
+import argparse
+import os
+import cv2
+import glob
+import numpy as np
+import torch
+from PIL import Image
+
+from raft import RAFT
+from utils import flow_viz
+from utils.utils import InputPadder
+
+
+
+DEVICE = 'cuda'
+
+def load_image(imfile):
+    img = np.array(Image.open(imfile)).astype(np.uint8)
+    img = torch.from_numpy(img).permute(2, 0, 1).float()
+    return img[None].to(DEVICE)
+
+
+def viz(img, flo):
+    img = img[0].permute(1,2,0).cpu().numpy()
+    flo = flo[0].permute(1,2,0).cpu().numpy()
+    
+    # map flow to rgb image
+    flo = flow_viz.flow_to_image(flo)
+    img_flo = np.concatenate([img, flo], axis=0)
+
+    # import matplotlib.pyplot as plt
+    # plt.imshow(img_flo / 255.0)
+    # plt.show()
+
+    cv2.imshow('image', img_flo[:, :, [2,1,0]]/255.0)
+    cv2.waitKey()
+
+
+def demo(args):
+    model = torch.nn.DataParallel(RAFT(args))
+    model.load_state_dict(torch.load(args.model))
+
+    model = model.module
+    model.to(DEVICE)
+    model.eval()
+
+    with torch.no_grad():
+        images = glob.glob(os.path.join(args.path, '*.png')) + \
+                 glob.glob(os.path.join(args.path, '*.jpg'))
+        
+        images = sorted(images)
+        for imfile1, imfile2 in zip(images[:-1], images[1:]):
+            image1 = load_image(imfile1)
+            image2 = load_image(imfile2)
+
+            padder = InputPadder(image1.shape)
+            image1, image2 = padder.pad(image1, image2)
+
+            flow_low, flow_up = model(image1, image2, iters=20, test_mode=True)
+            viz(image1, flow_up)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--model', help="restore checkpoint")
+    parser.add_argument('--path', help="dataset for evaluation")
+    parser.add_argument('--small', action='store_true', help='use small model')
+    parser.add_argument('--mixed_precision', action='store_true', help='use mixed precision')
+    parser.add_argument('--alternate_corr', action='store_true', help='use efficent correlation implementation')
+    args = parser.parse_args()
+
+    demo(args)
diff --git a/RAFT/download_models.sh b/RAFT/download_models.sh
new file mode 100755
index 0000000..7b6ed7e
--- /dev/null
+++ b/RAFT/download_models.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+wget https://www.dropbox.com/s/4j4z58wuv8o0mfz/models.zip
+unzip models.zip
diff --git a/RAFT/evaluate.py b/RAFT/evaluate.py
new file mode 100755
index 0000000..431a0f5
--- /dev/null
+++ b/RAFT/evaluate.py
@@ -0,0 +1,197 @@
+import sys
+sys.path.append('core')
+
+from PIL import Image
+import argparse
+import os
+import time
+import numpy as np
+import torch
+import torch.nn.functional as F
+import matplotlib.pyplot as plt
+
+import datasets
+from utils import flow_viz
+from utils import frame_utils
+
+from raft import RAFT
+from utils.utils import InputPadder, forward_interpolate
+
+
+@torch.no_grad()
+def create_sintel_submission(model, iters=32, warm_start=False, output_path='sintel_submission'):
+    """ Create submission for the Sintel leaderboard """
+    model.eval()
+    for dstype in ['clean', 'final']:
+        test_dataset = datasets.MpiSintel(split='test', aug_params=None, dstype=dstype)
+        
+        flow_prev, sequence_prev = None, None
+        for test_id in range(len(test_dataset)):
+            image1, image2, (sequence, frame) = test_dataset[test_id]
+            if sequence != sequence_prev:
+                flow_prev = None
+            
+            padder = InputPadder(image1.shape)
+            image1, image2 = padder.pad(image1[None].cuda(), image2[None].cuda())
+
+            flow_low, flow_pr = model(image1, image2, iters=iters, flow_init=flow_prev, test_mode=True)
+            flow = padder.unpad(flow_pr[0]).permute(1, 2, 0).cpu().numpy()
+
+            if warm_start:
+                flow_prev = forward_interpolate(flow_low[0])[None].cuda()
+            
+            output_dir = os.path.join(output_path, dstype, sequence)
+            output_file = os.path.join(output_dir, 'frame%04d.flo' % (frame+1))
+
+            if not os.path.exists(output_dir):
+                os.makedirs(output_dir)
+
+            frame_utils.writeFlow(output_file, flow)
+            sequence_prev = sequence
+
+
+@torch.no_grad()
+def create_kitti_submission(model, iters=24, output_path='kitti_submission'):
+    """ Create submission for the Sintel leaderboard """
+    model.eval()
+    test_dataset = datasets.KITTI(split='testing', aug_params=None)
+
+    if not os.path.exists(output_path):
+        os.makedirs(output_path)
+
+    for test_id in range(len(test_dataset)):
+        image1, image2, (frame_id, ) = test_dataset[test_id]
+        padder = InputPadder(image1.shape, mode='kitti')
+        image1, image2 = padder.pad(image1[None].cuda(), image2[None].cuda())
+
+        _, flow_pr = model(image1, image2, iters=iters, test_mode=True)
+        flow = padder.unpad(flow_pr[0]).permute(1, 2, 0).cpu().numpy()
+
+        output_filename = os.path.join(output_path, frame_id)
+        frame_utils.writeFlowKITTI(output_filename, flow)
+
+
+@torch.no_grad()
+def validate_chairs(model, iters=24):
+    """ Perform evaluation on the FlyingChairs (test) split """
+    model.eval()
+    epe_list = []
+
+    val_dataset = datasets.FlyingChairs(split='validation')
+    for val_id in range(len(val_dataset)):
+        image1, image2, flow_gt, _ = val_dataset[val_id]
+        image1 = image1[None].cuda()
+        image2 = image2[None].cuda()
+
+        _, flow_pr = model(image1, image2, iters=iters, test_mode=True)
+        epe = torch.sum((flow_pr[0].cpu() - flow_gt)**2, dim=0).sqrt()
+        epe_list.append(epe.view(-1).numpy())
+
+    epe = np.mean(np.concatenate(epe_list))
+    print("Validation Chairs EPE: %f" % epe)
+    return {'chairs': epe}
+
+
+@torch.no_grad()
+def validate_sintel(model, iters=32):
+    """ Peform validation using the Sintel (train) split """
+    model.eval()
+    results = {}
+    for dstype in ['clean', 'final']:
+        val_dataset = datasets.MpiSintel(split='training', dstype=dstype)
+        epe_list = []
+
+        for val_id in range(len(val_dataset)):
+            image1, image2, flow_gt, _ = val_dataset[val_id]
+            image1 = image1[None].cuda()
+            image2 = image2[None].cuda()
+
+            padder = InputPadder(image1.shape)
+            image1, image2 = padder.pad(image1, image2)
+
+            flow_low, flow_pr = model(image1, image2, iters=iters, test_mode=True)
+            flow = padder.unpad(flow_pr[0]).cpu()
+
+            epe = torch.sum((flow - flow_gt)**2, dim=0).sqrt()
+            epe_list.append(epe.view(-1).numpy())
+
+        epe_all = np.concatenate(epe_list)
+        epe = np.mean(epe_all)
+        px1 = np.mean(epe_all<1)
+        px3 = np.mean(epe_all<3)
+        px5 = np.mean(epe_all<5)
+
+        print("Validation (%s) EPE: %f, 1px: %f, 3px: %f, 5px: %f" % (dstype, epe, px1, px3, px5))
+        results[dstype] = np.mean(epe_list)
+
+    return results
+
+
+@torch.no_grad()
+def validate_kitti(model, iters=24):
+    """ Peform validation using the KITTI-2015 (train) split """
+    model.eval()
+    val_dataset = datasets.KITTI(split='training')
+
+    out_list, epe_list = [], []
+    for val_id in range(len(val_dataset)):
+        image1, image2, flow_gt, valid_gt = val_dataset[val_id]
+        image1 = image1[None].cuda()
+        image2 = image2[None].cuda()
+
+        padder = InputPadder(image1.shape, mode='kitti')
+        image1, image2 = padder.pad(image1, image2)
+
+        flow_low, flow_pr = model(image1, image2, iters=iters, test_mode=True)
+        flow = padder.unpad(flow_pr[0]).cpu()
+
+        epe = torch.sum((flow - flow_gt)**2, dim=0).sqrt()
+        mag = torch.sum(flow_gt**2, dim=0).sqrt()
+
+        epe = epe.view(-1)
+        mag = mag.view(-1)
+        val = valid_gt.view(-1) >= 0.5
+
+        out = ((epe > 3.0) & ((epe/mag) > 0.05)).float()
+        epe_list.append(epe[val].mean().item())
+        out_list.append(out[val].cpu().numpy())
+
+    epe_list = np.array(epe_list)
+    out_list = np.concatenate(out_list)
+
+    epe = np.mean(epe_list)
+    f1 = 100 * np.mean(out_list)
+
+    print("Validation KITTI: %f, %f" % (epe, f1))
+    return {'kitti-epe': epe, 'kitti-f1': f1}
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--model', help="restore checkpoint")
+    parser.add_argument('--dataset', help="dataset for evaluation")
+    parser.add_argument('--small', action='store_true', help='use small model')
+    parser.add_argument('--mixed_precision', action='store_true', help='use mixed precision')
+    parser.add_argument('--alternate_corr', action='store_true', help='use efficent correlation implementation')
+    args = parser.parse_args()
+
+    model = torch.nn.DataParallel(RAFT(args))
+    model.load_state_dict(torch.load(args.model))
+
+    model.cuda()
+    model.eval()
+
+    # create_sintel_submission(model.module, warm_start=True)
+    # create_kitti_submission(model.module)
+
+    with torch.no_grad():
+        if args.dataset == 'chairs':
+            validate_chairs(model.module)
+
+        elif args.dataset == 'sintel':
+            validate_sintel(model.module)
+
+        elif args.dataset == 'kitti':
+            validate_kitti(model.module)
+
+
diff --git a/RAFT/train.py b/RAFT/train.py
new file mode 100755
index 0000000..3075730
--- /dev/null
+++ b/RAFT/train.py
@@ -0,0 +1,247 @@
+from __future__ import print_function, division
+import sys
+sys.path.append('core')
+
+import argparse
+import os
+import cv2
+import time
+import numpy as np
+import matplotlib.pyplot as plt
+
+import torch
+import torch.nn as nn
+import torch.optim as optim
+import torch.nn.functional as F
+
+from torch.utils.data import DataLoader
+from raft import RAFT
+import evaluate
+import datasets
+
+from torch.utils.tensorboard import SummaryWriter
+
+try:
+    from torch.cuda.amp import GradScaler
+except:
+    # dummy GradScaler for PyTorch < 1.6
+    class GradScaler:
+        def __init__(self):
+            pass
+        def scale(self, loss):
+            return loss
+        def unscale_(self, optimizer):
+            pass
+        def step(self, optimizer):
+            optimizer.step()
+        def update(self):
+            pass
+
+
+# exclude extremly large displacements
+MAX_FLOW = 400
+SUM_FREQ = 100
+VAL_FREQ = 5000
+
+
+def sequence_loss(flow_preds, flow_gt, valid, gamma=0.8, max_flow=MAX_FLOW):
+    """ Loss function defined over sequence of flow predictions """
+
+    n_predictions = len(flow_preds)    
+    flow_loss = 0.0
+
+    # exlude invalid pixels and extremely large diplacements
+    mag = torch.sum(flow_gt**2, dim=1).sqrt()
+    valid = (valid >= 0.5) & (mag < max_flow)
+
+    for i in range(n_predictions):
+        i_weight = gamma**(n_predictions - i - 1)
+        i_loss = (flow_preds[i] - flow_gt).abs()
+        flow_loss += i_weight * (valid[:, None] * i_loss).mean()
+
+    epe = torch.sum((flow_preds[-1] - flow_gt)**2, dim=1).sqrt()
+    epe = epe.view(-1)[valid.view(-1)]
+
+    metrics = {
+        'epe': epe.mean().item(),
+        '1px': (epe < 1).float().mean().item(),
+        '3px': (epe < 3).float().mean().item(),
+        '5px': (epe < 5).float().mean().item(),
+    }
+
+    return flow_loss, metrics
+
+
+def count_parameters(model):
+    return sum(p.numel() for p in model.parameters() if p.requires_grad)
+
+
+def fetch_optimizer(args, model):
+    """ Create the optimizer and learning rate scheduler """
+    optimizer = optim.AdamW(model.parameters(), lr=args.lr, weight_decay=args.wdecay, eps=args.epsilon)
+
+    scheduler = optim.lr_scheduler.OneCycleLR(optimizer, args.lr, args.num_steps+100,
+        pct_start=0.05, cycle_momentum=False, anneal_strategy='linear')
+
+    return optimizer, scheduler
+    
+
+class Logger:
+    def __init__(self, model, scheduler):
+        self.model = model
+        self.scheduler = scheduler
+        self.total_steps = 0
+        self.running_loss = {}
+        self.writer = None
+
+    def _print_training_status(self):
+        metrics_data = [self.running_loss[k]/SUM_FREQ for k in sorted(self.running_loss.keys())]
+        training_str = "[{:6d}, {:10.7f}] ".format(self.total_steps+1, self.scheduler.get_last_lr()[0])
+        metrics_str = ("{:10.4f}, "*len(metrics_data)).format(*metrics_data)
+        
+        # print the training status
+        print(training_str + metrics_str)
+
+        if self.writer is None:
+            self.writer = SummaryWriter()
+
+        for k in self.running_loss:
+            self.writer.add_scalar(k, self.running_loss[k]/SUM_FREQ, self.total_steps)
+            self.running_loss[k] = 0.0
+
+    def push(self, metrics):
+        self.total_steps += 1
+
+        for key in metrics:
+            if key not in self.running_loss:
+                self.running_loss[key] = 0.0
+
+            self.running_loss[key] += metrics[key]
+
+        if self.total_steps % SUM_FREQ == SUM_FREQ-1:
+            self._print_training_status()
+            self.running_loss = {}
+
+    def write_dict(self, results):
+        if self.writer is None:
+            self.writer = SummaryWriter()
+
+        for key in results:
+            self.writer.add_scalar(key, results[key], self.total_steps)
+
+    def close(self):
+        self.writer.close()
+
+
+def train(args):
+
+    model = nn.DataParallel(RAFT(args), device_ids=args.gpus)
+    print("Parameter Count: %d" % count_parameters(model))
+
+    if args.restore_ckpt is not None:
+        model.load_state_dict(torch.load(args.restore_ckpt), strict=False)
+
+    model.cuda()
+    model.train()
+
+    if args.stage != 'chairs':
+        model.module.freeze_bn()
+
+    train_loader = datasets.fetch_dataloader(args)
+    optimizer, scheduler = fetch_optimizer(args, model)
+
+    total_steps = 0
+    scaler = GradScaler(enabled=args.mixed_precision)
+    logger = Logger(model, scheduler)
+
+    VAL_FREQ = 5000
+    add_noise = True
+
+    should_keep_training = True
+    while should_keep_training:
+
+        for i_batch, data_blob in enumerate(train_loader):
+            optimizer.zero_grad()
+            image1, image2, flow, valid = [x.cuda() for x in data_blob]
+
+            if args.add_noise:
+                stdv = np.random.uniform(0.0, 5.0)
+                image1 = (image1 + stdv * torch.randn(*image1.shape).cuda()).clamp(0.0, 255.0)
+                image2 = (image2 + stdv * torch.randn(*image2.shape).cuda()).clamp(0.0, 255.0)
+
+            flow_predictions = model(image1, image2, iters=args.iters)            
+
+            loss, metrics = sequence_loss(flow_predictions, flow, valid, args.gamma)
+            scaler.scale(loss).backward()
+            scaler.unscale_(optimizer)                
+            torch.nn.utils.clip_grad_norm_(model.parameters(), args.clip)
+            
+            scaler.step(optimizer)
+            scheduler.step()
+            scaler.update()
+
+            logger.push(metrics)
+
+            if total_steps % VAL_FREQ == VAL_FREQ - 1:
+                PATH = 'checkpoints/%d_%s.pth' % (total_steps+1, args.name)
+                torch.save(model.state_dict(), PATH)
+
+                results = {}
+                for val_dataset in args.validation:
+                    if val_dataset == 'chairs':
+                        results.update(evaluate.validate_chairs(model.module))
+                    elif val_dataset == 'sintel':
+                        results.update(evaluate.validate_sintel(model.module))
+                    elif val_dataset == 'kitti':
+                        results.update(evaluate.validate_kitti(model.module))
+
+                logger.write_dict(results)
+                
+                model.train()
+                if args.stage != 'chairs':
+                    model.module.freeze_bn()
+            
+            total_steps += 1
+
+            if total_steps > args.num_steps:
+                should_keep_training = False
+                break
+
+    logger.close()
+    PATH = 'checkpoints/%s.pth' % args.name
+    torch.save(model.state_dict(), PATH)
+
+    return PATH
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--name', default='raft', help="name your experiment")
+    parser.add_argument('--stage', help="determines which dataset to use for training") 
+    parser.add_argument('--restore_ckpt', help="restore checkpoint")
+    parser.add_argument('--small', action='store_true', help='use small model')
+    parser.add_argument('--validation', type=str, nargs='+')
+
+    parser.add_argument('--lr', type=float, default=0.00002)
+    parser.add_argument('--num_steps', type=int, default=100000)
+    parser.add_argument('--batch_size', type=int, default=6)
+    parser.add_argument('--image_size', type=int, nargs='+', default=[384, 512])
+    parser.add_argument('--gpus', type=int, nargs='+', default=[0,1])
+    parser.add_argument('--mixed_precision', action='store_true', help='use mixed precision')
+
+    parser.add_argument('--iters', type=int, default=12)
+    parser.add_argument('--wdecay', type=float, default=.00005)
+    parser.add_argument('--epsilon', type=float, default=1e-8)
+    parser.add_argument('--clip', type=float, default=1.0)
+    parser.add_argument('--dropout', type=float, default=0.0)
+    parser.add_argument('--gamma', type=float, default=0.8, help='exponential weighting')
+    parser.add_argument('--add_noise', action='store_true')
+    args = parser.parse_args()
+
+    torch.manual_seed(1234)
+    np.random.seed(1234)
+
+    if not os.path.isdir('checkpoints'):
+        os.mkdir('checkpoints')
+
+    train(args)
\ No newline at end of file
diff --git a/RAFT/train_mixed.sh b/RAFT/train_mixed.sh
new file mode 100755
index 0000000..d9b979f
--- /dev/null
+++ b/RAFT/train_mixed.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+mkdir -p checkpoints
+python -u train.py --name raft-chairs --stage chairs --validation chairs --gpus 0 --num_steps 120000 --batch_size 8 --lr 0.00025 --image_size 368 496 --wdecay 0.0001 --mixed_precision 
+python -u train.py --name raft-things --stage things --validation sintel --restore_ckpt checkpoints/raft-chairs.pth --gpus 0 --num_steps 120000 --batch_size 5 --lr 0.0001 --image_size 400 720 --wdecay 0.0001 --mixed_precision
+python -u train.py --name raft-sintel --stage sintel --validation sintel --restore_ckpt checkpoints/raft-things.pth --gpus 0 --num_steps 120000 --batch_size 5 --lr 0.0001 --image_size 368 768 --wdecay 0.00001 --gamma=0.85 --mixed_precision
+python -u train.py --name raft-kitti  --stage kitti --validation kitti --restore_ckpt checkpoints/raft-sintel.pth --gpus 0 --num_steps 50000 --batch_size 5 --lr 0.0001 --image_size 288 960 --wdecay 0.00001 --gamma=0.85 --mixed_precision
diff --git a/RAFT/train_standard.sh b/RAFT/train_standard.sh
new file mode 100755
index 0000000..7f559b3
--- /dev/null
+++ b/RAFT/train_standard.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+mkdir -p checkpoints
+python -u train.py --name raft-chairs --stage chairs --validation chairs --gpus 0 1 --num_steps 100000 --batch_size 10 --lr 0.0004 --image_size 368 496 --wdecay 0.0001
+python -u train.py --name raft-things --stage things --validation sintel --restore_ckpt checkpoints/raft-chairs.pth --gpus 0 1 --num_steps 100000 --batch_size 6 --lr 0.000125 --image_size 400 720 --wdecay 0.0001
+python -u train.py --name raft-sintel --stage sintel --validation sintel --restore_ckpt checkpoints/raft-things.pth --gpus 0 1 --num_steps 100000 --batch_size 6 --lr 0.000125 --image_size 368 768 --wdecay 0.00001 --gamma=0.85
+python -u train.py --name raft-kitti  --stage kitti --validation kitti --restore_ckpt checkpoints/raft-sintel.pth --gpus 0 1 --num_steps 50000 --batch_size 6 --lr 0.0001 --image_size 288 960 --wdecay 0.00001 --gamma=0.85
diff --git a/cirtorch/.DS_Store b/cirtorch/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..d4cd69ea07437cbd5b79a756187d88e0bede4384
GIT binary patch
literal 8196
zcmeI1O>Wab6vyARX_=%#WP#Kyy+L9Tp`@fuBZL%%vgi&e2o``+yNQT}Ye%tz2_YyO
z&cMeFSa1+dz(F_w{O6-pGN!6TAqrw%H1nT$-W%J$c*cGX5wX^&TO}$H5l0bP+(PvW
z6aAuOY)x;u24#pR@+qMXKDTI)@wOW*0ZYIVummgtOJEfU;GQjvpL5?=y|%UlEP?-$
zfLI?K6roM6Go^CrKqXTEXbzjDp^ZF1#yDD=T4zdSD8^LT1Jj{Qrx;9yqu&wk(5BXz
zQWZ{2g%i_zW;#P*a_@+9q&u;uQd?UBmOz$($lbSO&hAsVkiU-)gXq``A`c#7Qr$th
z`9m67r%?kM(=oXyed>vEjHoa0d_Nb(sSED}C5C@OvElz2{_}gu_<LzQ&`0&v8w7rw
zR4U)t+Intd^9tvMLg8xRS-T&l?Ziz+amyV(5#JuTN#E1$hfx%qwO#L#-%C5i>-VBC
zas9A2l)-+t2bZUh{jeLQt!NZ>V>wP+b#R`~=R3vHWU|xPEjv5)#<c8A>h((5somb2
zPV;>GM)mID(aHGr<jwT$N5Kngl3u$=K%ciy_>wu%m+fH~MB#Jvi8u~iuYm0YuT}!I
z4RCB5K8xTC{|mtJWr5>=9Gr2Y2DnY&a&eXRXqbWa&VaVyyK2C8#g(?Vf9Wf2;Uo=M
z9E*UMmMKNR^&$i8y8$fYe*v^*PtWRp1JG)<OGC??r~z(+M!@FdS~Di5TsJ?=t$-kC
z%@SAv0_*A+N+SQifByUb6*y9R2$p~)@V5xC+(G-Gh0#x+Pt6^PT-!l8LJ=nXW=drU
tDw&Q$WjYQ$`@;}z2d*Nfsdc6lTVP9n5%9Z@=f;DPz5mOf&sP5^fuG)mnaKbE

literal 0
HcmV?d00001

diff --git a/cirtorch/IamgeRetrieval_dataset/train.pkl b/cirtorch/IamgeRetrieval_dataset/train.pkl
new file mode 100644
index 0000000000000000000000000000000000000000..fcf1b7aa22432f320d022c3b092daff464ab6f0d
GIT binary patch
literal 61628
zcmeI51+XMXuC9x#+RV(%KF!@`rekL2G2@t-dCX&GW@ct)W@cul_bK~aPfF$8u=nnL
z-uvE6M>rgRWLA<=Dg9FB*)uujiq8Z0Z?~aC(rpK?v+))~cN;q0kYv4$*WYI78vNhr
zeSLk^>a2a$Zndx0H_IklZ8+4!YV}rKW3|3kt<f}Cz1r7o8LZvv+V9o->dl5}quy?I
z?e`kBX1m$e-)l6w)t1Ft)ka^#l<Rgo4TCiqUBlFE_SL#gGmd6oqifr3_O)8IuGdC=
zR%WbOZTW2oR;{+%wOO{>;=krkutv3Bt(v-xR$r&jlxsJdYHZZ4)|xF_x7w_C`a1f1
z)n=0cYpmAjbZY*1`ChHrtg7`8tktZlc>$}_a-*idSMO`FBnGQ?8dcM7y<TrLP5(gp
z+P-W^8;w@SjtxQU)J>o3?LIA&Qn%A=s`YhPr`j;>HW*3WjHA)lZg)!MI*n4fYP+vy
z#@1*wnsu|5jaH3`(euL4`dUU_8tr<sYv!O?@9Wl0Uz+t+w_(e%V_H7e5&3I1oBqBO
ztkG#JnG~$k?Cbb*3RZ15>P>$fV917^7ckbGpEowas`akY2ZGhm8>WBtI(yZh11Z<w
zi>5D)YOUQi<7hNm)wbzhL&VQw-CDP6>NeSzN``2cEz@dy?biBct+tWAj<;@tb!u#d
z64q*WP2Ent*6Dg<b9Eb4=5^RyIjq@HbKtNx@@MOIw9awmy0wnKmOZRXw{;s`hS68T
z+BIJ`q;9v`ZTa#yfOSjXYqeW_x_>oxAXB5-tufe6)s(BDPtEsgwQjv#_hf^1!P?cT
zCs(zm$aABk=GkGLs;}!@xoTDIbHS?3zIxYRH;1*@AYPvZYgO5q2J1ALLW|L5e{9rc
zY^648?1rjogHnt{e~-hm+vm%Me6QVV+40tE>;*H9dJPR|`ciM!+y4HLIiT5E*NmgV
zY3b`-DTfN{>-g*8uvVX1Bf&Z-4%04DT5WndQNGu#RogAoF5Oe-bgjkrL}2{yfwlXp
zjix`|)~w8DtI_AL5g1#mPpu_bt5xl*dwZWY*lTUh25;`c+M*Bq?{%HLw0#{>1FNB+
zRb8-FwN_JO6Rg|mwEZ@~SV|5buU)~q)w+MyN*nENm!ar#9ac@P2jx0UmfBn0S*y)j
z8&hIf-8ysMMqd260%MYEt+v;OV4ViK-IG&?aqM@!K06Gvq~WcR!_dzDI0VC}>zZ=t
z2#i8c#wmx6VD7y&a#*|DY3nvPJ+NO)xvFd#^Szpgsb3Bmq9%ucH!olu$sON@s|!}g
z((%71m~0SlFSv5;I_kuHufr01YwpT*u)|EbHo8vD0c~Ij^!a*M>UKDQ)f_mi!|dyJ
zJDpBT%?sr)(c3jsu3K**392qT2Kz<#Pq3Q57w8KIcNeR{)aCf~Z5mgu)9Uu=xvKVY
zMyWND?{%9P%ldnm#q3vu)mSCHmMC^iA74)SUai4&>G4+O^fmLs9xurTSWC+g->YNv
z*R{M<>)613rricxzt8kf><Ir%mU(G*+YSHh5v+x3_iabP+GrEsesNf{(Y5o}ZZ#Xe
z9pTFHxvpNz8k>uus5!0Gs`ZBX9_x*M(d%1lbUU=7>*CE|0~)MWSH2Z}!AwN+>h;A_
zYaxNAE{aI)eW@#Ewr!)!C(SsRQ$#_3k4D?Rk0X6S>KjJJ!Eirp-3E2F{Gkj`JH9@Z
z?_u4W^{uhsHQ(28?TTw<`rNMep>%Yg+tp6j_jRQ%n^&Cy4r|~>nf1UO#G^Lf>olw$
zl7S)lwj4^)j14_h_x&<yw}XFa$J@a@_w8|4j`OY0tZxSssZ_Tk28`DiY;TNj+*5<0
z>8k#ENI7(gl5vM=pSbQY_MksDFf1B9SAtcsU;Mssu0jFemUw*;jGff*=dXvgl>7;X
zU#r&FVO`~?)CEJtl@4<llHkvu!#JY+c@eBx>%gJ>&L6n%aeUNl-Bw+n-BOp6N9_;6
zFeKFe5DazT+rX}kE{CmYqY4jFGxJidVyxJ5h_3CQ=yBi2mNqaPo3<|qMxT;#DaSZ`
zdtB<)IOTo2*kQFc?!8`1Ol5ukN?q(-pWkqG*_F0#ofYzZNhv2btJ*U?3@2N+%LH`o
zoHke@yB-`p9Xo%`S_6+pf3Mj_<(RP{ERajKT&JyU2Kv{;@KpL<FbodgPm!@Tu@lSX
z>Mf;*TsicH?H|X7@4L9~b!CxE|GIU>3HHiy=oz`^phZ4(T`&xCi**}54=3Mi$tiEk
zA(B?Epb5J^$J49Zs#!U0VcYsXi7O{+&DYP;F0`n!864Ir$r>%t88ePrm&4XzoQ%Hz
z;o5~vvvSHwi`uqz8Jd4qNME3MlwIsF>~SNzD7t28yzI-S(UYxatE223`ChZ#=lh|q
z&j^;XPo*5jx7B|f9!;xH@!0hl<?43oR<7`BIabUZbUG}E!LV3M>jn{G&xMv83wFHX
z>l%5+_d|W!HaZX&8pE&EJ_+LxHnCg|UdqS;c0|Xn2MQ63(zGG&WeH<nmN5)%TepKs
zH5iCGSEbK2lu4;vx1_V%(CEsRlDZh4%Jy+svt##ayN)Su<{9ThaaAH$cub|Uwk-s{
z9WUmKJ-6CT2y!DEgd7x4<Ju5KWXs_~DEmeFg8iawB!@x0+P=Wt*nJ88SJDwMf>nFY
zfVJ#CZ$mtGeP2l0?KB(qoM|KXemupE4ZqCp{dO0_&dNrYHMi@*5-|>Cm%wFcpNYO;
zV{+JPxnjpOt&W8_gs(E?;3w_=z=(yVFy(N|tlsEAm0BH(9otuGm+*p>Q%od8%d{au
z0wedhE=;Q}*Jbt%MzeO!DTE<r$`RQqwSm&Mx)Zk>dfn7*qsDDtAcIQtg5;Jlw3E@D
z5Hf9_mlt`#NQ6i-?V_%%K7b9wuQTPk1T1XbF5a41b2LdwCNV@6-zj~Ou%zO?dRWui
z5g4a^R))a-;Cpq6zx^KPbZv0_TG{PlB3U~OlLq6~)a9tPwhB}bn#h!ER7<*!z$ePn
zmV-Vp@&e%oQ)9|ODcHSFaHekOz6;S+s*BRLwj)#q#G`3L$Vl5Ro|@vrWIZ@nt<LEZ
zNj2vT928Ma-3A!ex1IwqcE6ry{B@2MJ*Qwg2E<x|5lYqj7YqYh&nXyOq}G2D0EfL+
za{vYftz}mv(yloeE|VRHm|^yN@JNckl0M@u7+ViUfq0bt9;ZU7&k#=Lj1o2iR>q8@
zg>PWz068!^LS~t0psCA&WNbn#6{spZe;qt;J6`++yXJI|W^@~1*7hb&B+QB_$Fvw*
z1s|$(zJYPVnfa^2IvT$Rx3<-=a|M-VZPqH7_1VF&EzDe1p@xm!3Af2=+P+BW-OLpy
z9uW{TUc%i*$1+^JL?h#90~DaC%ha1QifMr!vF)PSjsBAZ%KF$cr8O(NY+g7R(=I-z
z(K$pau^P-=5m#&4y~P$R%?l2lJ@cwHX4Q|C%id?Js@#tr)>ScUhr#a}e}-red)3UJ
zxPEpVoV1!Nm3E09)y;a;gak12f@hDhr{@ZeLdC#c{|I>7{l*cc`C@68on_7=Fdct$
z-)nIonKei3akxxhVAo20#_=&e38yNuYvk0Cn}3AaHi%xD^Mmi9PHq37@Qj@Z_g}Ji
z!7y}eyB);9&OOG3@r8uZ!i_L<fEu^w5#*5N;i$_*8-0pv&q(a|2o{++z_G`y(dA%E
z5MPV6bnK2bhf%fsnqVclstfI7`iBQWOvSW;uCwQAUF?@qIp{ER4pL6#jfkufHDGY2
z4RSh+O(W3?YhR&G4OcJU!;C2P1)|@|UtMw+?3@x3Ha<4_A!twAKf;{G$EF;KT1H=i
zaUhwoF$Jam$+XzH!htKTFRDbv0%g3YajPThv|!Iw4l<&ZrY{|c3v*tgH7w6X77x)y
zv%avRxNG`*99xzj;wU2z#k2v7Y5fX}rbg+km5{6P!H|n4qF~zPoVIfc`G;9;%CV8G
zj*v7Xd%odW>DUDGOz&Wk&G#6v@zpqFu%^tOCS(IuXzLPms4G92x;n>D_D2IM*PgXt
zC<*huCbpSf4|b)s%^Jd^+x|&#%zlqBPHC=SS?ykEK#th62aAhjHPb(2+{$x<Y^2g$
zi5@rlk6?<98OprikyxGG=)yeOHA0@PJ=DP2@bgb)p2^$9tk!)dsf8Gb!8pCGZo*mU
zTKSV~2IHR#K~b{DC6;Q>6qa1a7NvjqAJ!IaVq94LB4Ht`*ANZ1oEZlS->!L+Q`Or1
zM3_tGQ4^Nh@I#z3tdiO1SfVN~*UdA_Tbe&6-`Y(q5QdKFGrY3ZCBj-@+xmPH3L6v7
z$bn#n|AVt7-NMdG8&|T7=^PAM4`f{BQS`8qjC0ar%bIaOYL(Vaa&e5@<FH#^ij$il
zxRJ@0WUHCEf}ZSHeT9Tu4ixE=OfB6%GC2uwS&a0d5{B<mYL{d%GhV0%Qg6)n;E=69
z12NZEE~oRpM219NSzi|n@wIJWC7C&e;6|6*as(5Mer`!Jgq;^jPqgE0V2IheC?~r=
zNE;D-@AF7i@pSE(j0S7j^9?hbz>uj+DXXtIEp1FwvieFo2O_s*x3jY>XGxA6=b)WG
zF}>|L$V@J+8{5t9Rmr)ta!)BD7G`XspN*`M6N5LY%VAI>(H6rlHhq?8fb|<CyUEIK
zThg<QoI-ivU70rOcrPWa6sttR65%&<MLIQyiuoS8)5-yh3)f)FaR%7BO@fQI9MWv%
zxsCT`I8dA!h#w>4NDE1%rd=e+&tsH52w_Cvz?36+XSi3&!K2&n!AV>FjCI<!=NqC6
z$)np4HEFndWVvJgK{N@9Qp;5hryb>~zK5)IyGE}`9uxwt%fXa#@N0~vv~fS&bKDA3
z7rVrAkq{YhGJ4%=oadzH={A~-*T{jm_BJP>#+hu-3Zfr1okP_nZwa+#<OPigQK;95
z+$d&C?**)EsC8RTxF9nQc52Jmj<DmTe46=dH!vHtKBWx%(##*8B#{z5FCu@oU7~6v
zl9_Ta8Agv|+Y`$&ea70gdkgN0Q`CH~Lso`Ae+_p(07KF1a}N{6F|02=jL@++2ZD9j
z3cfrGCd{kPMS|hv(X##?)EAPk+a=Ch$8u8bN@R>fPh%MTER(^A-T54RgL__Z;VK^B
zFdRbm{_i%I!-&HAdtWeN7=6FdVRYG-D=^{PVUfMQ2u8MwZ=Xsz;W2%E?=Tdluj>S>
zk+tdD<AP!CD*fj$B*FJT9LDtdI#w|J8LlDd{y{ycJ6KYV+W{i?{=5KmI0<!K(O^DL
zEp;V7TggF<xyKPz?FuF~gTI!7$$cSDk2eG(MC!)^1*_49Z?ig#DOGYR<yc8y?p-;C
z>)ZE&p%WFy?J&u2_x7q_Z~)2<6HIi8uMZq1hq4(P_KS+UNI9Wj)SL>2w)f91DTh&_
z*BlJZsqPF&xh@usk{7|?sePN8a>TGP89aU9Fg|G7m9RnAx0|G#Q2MqUz5!06CmWQ*
z22r*}gWP@0dolsMa)L1m|7>*SAR3fhNjX--w{xT%!6%M5{XK%K>Wrcs_XC<LSIA*<
z*Qn~rxZD|#n-0Ei5{&qQuXm*`TOTIQYnL2#)Na@J%Nmlm&ft9e4@?LYl{exr_z0!1
zDA&dIQM!}dRrbE#gAVKB#Hzkf4oUFmMam&+YR@<ftHxh9hmpc(>mpaBHpIu)b3iyi
z$Br2rwuX+e2u9FF<)aIRV%Ksi7}+IC9|%T_#g2m{3YD`X-;?|y-+yx$Hz|A{(P3?D
zZ!-=KUqY;UP9@t`$s}zM3RK*Pd=Enu7TK#yoESkR*k&;V#@BVO96qeSKL#+R#~mgt
zkNqCm;=aCe<p{m|V{;gJ5B~ZJ234Tu%3*|meYxskT;Ve9a>6UwaOF^dc5KvCvgXPW
zR4?@fBh!uzZ{PQs8d4Y6fIT?ujB*(Eft>?!^K74m{`1$@)g?e}`wYwKb923R#R4>Q
zAQyK1bJcy1Bi_!R#1~5aL${auhvR6=u|0e)!}SGP#g8fVFl<}fKMZ_7*4r!R?w0EL
zle}TO9(au<*(DOA>>L@d<UiYW!({yfOy%&ozKHK<+r>F3%@tO5X>UQCDceW-0u@=B
zKiKh78{#n7cA*qXdy7NGk14r6V-Wd%UJnzd(8vZ_s5GY%4zT+YQo;94-S>!Dt20l=
z2Blh(XLK0zqSunsx3rJYoPI2!*M^Qe_b_6lc3vbd^aoh^d*mee=c?;7I>+uU?!+m*
zE9Ee>OM8I`0rr6&8;ZBImgHdgKA0N^aZ{hG8o<<B0zFK!dd<3#?WoRf*FUJ{ayiBM
z_Pz&CZTGK)AniWq)GFy%qCF)!z>QZviSz}_th5I)_Uzu5L?bIN*iDM(l0K7ap#1Y5
zMy`t)FUF&~v)3z!ZENHn-a^|O(uP#F<s_D1=8B!F@;hA{9Q$@HNz7ok>UD!kQyh=0
zi-n~80O<=i$Lx72ArYT*>(y<j`<D)5Iqcq-^n0tDz_bk_?Gk9RX9^frjTr|=yp?BI
z2GSgCIjkge&LCAP*U$ACO3=y+i>q?aT{*(0J`dc(bj-_P>@6$f7{=PZXS{M}&+2h7
z^)88gk0by#x*i)C42Q)KKXbm-s^q#DIfX_qoypKrDxbl%3ubjYi2*8i+LeQs^7+3W
zCKjscA6l1KuhLg?+fQ*GGG2}aD}P`rpU|~I4vXD0k||!A7t9T7PeMYK^b1r0yo~8H
zjJeejMC3~P1tO`gd^H&dTS3{y4wERFX#+FIp3~xi`P`u!FWTOZTRBWpr){6DpG>>r
z#{2o0QWq}@t*HAVArUKUI7}tG4xb6K%G9kBsx&f5AW+?tbM2BcVfQNO*(H03tB2Z$
zl|B;$vga>157{H8FG73UzOcUboFR*wEIw10dA9n1Y#)vWExRmuxm~JSU5ACKa-C%k
zBtOEB@Aoid(u{-CT;+MVa`Lc-=`(lEa0vA{P_ZgU)72$=+>e(HU?>Sw7wu>DIHoe}
zgPsF0=v-45?dRuoxHdT5tUcZ!|J3SJM5AQ4Ln3LOLFNx8&B`tZkIG$j?GjD);{gtX
zwN<<*-;=v|eomH@lQ6c=h4-+s@5gb(?$>ibUI9wSU{D3tKav|**8Y=MHIyGOeG%Hs
z=N%oU<58}EBz{@BLYP&qMz0((G}}KiqZBtMZQv!B#s)X+$6eg_FjcI+k~@l}x{&%-
z*P+xP;muq@Eh!FE`a*h+-TNFyDi=rk;;vE{TR`H|iraMMn0j+wVl=_H>%PECkz`{r
zCe`>U5MO^#4(T;}i}-ZI+Ala;>MnpA2h_0LtKwSO{RWj=vXN*(b4D^=yw%e85RKA!
z(Wln#Yzd*=n}b2U7vfwGdBeq?{7~!gRc5xhZDc(f95{7TQ@%&ChPn~vFmltZ$BF}o
zIiTCX24>G`?F2?naH$+Ns>Ki@vm1!)mb_=8Sx~5^E{;^G4VTto%JGnmV)|vgL{k;(
z*2B1~Y3g#8DOOd=5f!l~4N<R>#la0T^@@<2Q?d+8b3k~^vNAl{pl);b>S8<D`Qxmx
z-jLiIvy#QdB9;B&zDE+DweT5)$_|inl80jDfK;4@pXuw$VHsPk&Gz8JrJhq1jJnb8
z>PigL$N}3D6W`Q@5VM*MXS{R@V8^PAOxK2Ffg2fu1|ezBv_VQ&sT``jTn>J?R2P@u
z>_Og1C|UR%wdzGY*FVxBtTn*us+aCuIT^6AWJz&_A~NG3XVIR(kkW9$x*W;a>g5G#
zL!t@Rdls8PMIEFZI>Me75C}MXrVZF!E2o6xIhIX1JQaI7;+Cl_D%U@Jal2<Q3bD1#
z_Xx7sQ;$T(l7@!gRoSqv4LB5g(nykxiU7+Tuq(^uNQ5_XkI7#;F-g$D);4{H>bLtG
zUW%o&<v1BE26t`sBs{gsU}J0$F!;r~t|Mj4Ne#vZ(Q^vMzSMdM45LuXB#~#5`1IH$
zHJM~BH4ZSyX8S!cWNrT>F}L(RyiPsOw2D)#_aGPwLCYF$0O?j1!*n-$nj2w+CiOmt
zGtwD4Zccduq0|@Rx@I5YsdZ4iW)6sg8~sO=p64~~IG7friy^g0__1@)X+Q&*Hc(Ba
z^}whpm!p4nEjjf|bB_gLybXM-lGR0q2v0+p@uEspMxo4~TqCmcj4RG=)#HF7Q(3dF
zF3}S^4q{#^1FKg~-i$QgBOqF;%P_2rbG=8soaeqLj;N7I`~a()AP>0!V%7tThTAr#
zFX$I@e#oT2HP~|O89S$B%^FWnZi%U^S=VQYTHEgtjW%`|VG^1!axa&|?VhP}q!^Ej
zj6k{5Zu%@?e<P=)*;o%9(LmJ98bP4ys5SE9ZlalSz@MrNZ5c0&9mJdN3y%$vj$<)I
z&3;dk+H7BN2+dgrNlS3iwt**a*9aC*Wu?0QVM>+8E2-wTFX$Y*KcHS!Mx6T|ez)<i
zB&`Z%V#doua-}x7V`rE>x7|!c1q_$a=x6ccOXGlnF}63dg6(blf<<i@RLWsmSb34N
z%*Z{;rF1Uv9;nVfLJml`u--kGT#nK6B5ylb*(DdkM#k~5<;@IJ7suP`du~!u+m@5J
z-z+9qsSL*ZaK<C#kfAHK&uuQsm9U1+xR5zO{gvvH14Ja-XNR%s^i2YhE3l?ve#H7K
zodKv*b=y+vLg!eUAFR&a)Z>-QJoXHgM@Z~mg{D@oMYuNjoQZhD-wTy)+Tg^q`&{0{
zGQI}3y{x*a3#PJ)WNak0*)v5h*;yHa1F%s!3h|nN+2?YC8vBo<hplDw6_~n}<mNyg
zMl>?Sv1RRI_b`~17a@Y}9>j~cnE-Or#xj&*@mppTgyYS~BwGO|OwTE*PG{3Gr+kgu
zhNhe_qh<~W30vMmI6RIEQ<qmm4C6^TBBHi0xb}u&gTIn{Smt|hT2`-N>Dh=aY&*WG
zSr0iCO7p_ae0zoxQ$lO&b}=z^1}bv}$E{vK6**uRVc40v+_E#iv!qm#xoFFwUW`mi
z?6cGtaSd$$$Rah|1O5`mt!)EMV)rF)C#aWo-8ca4c|@WD=Dg`McZZEnjClpgWAqF3
zGcJv-D^F3Cu#%m~jH=hwUH>@q?3pa;+3smDbqmndg{M&&cB~s@NvRxH6xEGlsf)$M
z3hO@0Tb<TcCa$Jl)auohXJJfTY;UXUxU8jKu5fiRbo^Tl1DMVTmi}Rwm}ncmhtO`O
zU7MXJb!oU%S4csl4}@Mb{FU<>txes*%JI+ICV!;>=Tgb3VA$E}rAoo@R&n%(_1R&V
zD!vXAOiVc6zjRoWUFgkolk7`*CE4$@V4V8OHWSQos(!m*#Q0!{yuJvArt>)fsVk3v
zGFQK!=MEzp<LfZNxC5hXeuud<X59uS6dOrl_^{Yl-rk}vz0-eDL@<Z}Wj{Mi=t(^`
z@eq{`bLF@p;O~9G&~)n7`~b#%1>HZ4Fy*^QIeFjFw|50Y<EV@f!T1;ptiLBO$eMYU
z+<oQGNL>;Yc)HQ6+eX&#aeP0ZDVSJOwjB1U&%d~Ga+LY=EOl94-_CL6$OQHMw*gH3
z6@VVbr4{cy8o*REW&l&1s>ARMe7~oM$#b!0yd3;WHl)ua==kS{tIKUDKg+>kq^|q%
zg#k=#nql%R--D&`b(kxM?_6q^><^!NaOLnn{s6<wG~?hxnA+#kt|UR4^+3i^61uLe
zhJXG_yI7}$icL8V6`$9Waw3uVZ)&_~b{^@{b(>h!K9?qS<;?TXMu*AM_GZn|FBrV~
zdy@R7^b6mUznkIPT=G3SqRvJz_%O7NuOq-P?<ETEkAs*HCXpToo|-%@r24`h$1FDG
zxXZ)+2VD+FQoVdBeZei`vX?F=$)>(fEal`c#`yM-!&naAk9Qc^Z$`%9;E1T0zHkK^
z&r!F_^9;NTUBc|XL?g<bds9wc-`49UbdKUnq<=yQ`dqHVB)i+pALobS(Oo%QSl`zG
zL*vkdo<9g_3<RyOc(Ym*<*+`t<VKTFzMdQmV07A)<4&Fb8i<s`08z0ghY`^%m6KP0
zyuP?{;xd^wc-lt2^5M#1jr-h#U^Og7Kl{UBuyy`=2!`cN2t<#A*&~fqWB9O~AqK;W
zD3!x9vvb9Ddp4o2%hr-x_`lz7mcEceg%hhWxs~ppZ&HpM=<1e4590wWPp%vWi)qKk
zEkzhW(+2D2pWVH>*av1kxT~u6xhp3ZXw1AofvQ(}Tsg8AeE-N{k~M4Fz<}{}lPkxi
z3tvAA#yPEC0(Tg6n6HN%Ch<lyUQ9g|i<WXk?vy|1Fkv{n{pK*(2s@`pByS|?IYlH@
zHoL1Uml^H%oMUV1LOs~Iht5$vm-`+v<Z~W9OzzE_?{U2OdQHkf1u0Hz08{pJ5930K
zStE%L`u4ahCpL|lX9ynd=Ig$20H_Q=R~MVm*ToLwO*Y>~au~#b?|1hw!mvjE@b*~{
z)2=+JZ}ygiQhi;__ax55pUYEq!Ssuft{j|^Z%_6x;<|dga)u(j=6i6ozHjR4Vk!GN
zyN7Y;*}5XSdTiL^Tnn+7M5N3(Q1-$J`Z`Cv1?3A#yAX<sM|YTHv3Pcl!^kAF^T$SI
z26Y=qhRQXNy0VRYuE1f;wC~UKFv2W)-QX9wOlvVdX!IK1G*pl+ho~7{C$|r|=4twj
z+Aw+pKLt|Ij*XNZqo2j?QQ4+44tATe83r({0o^V+a_XFR<uD_R&Jo54BgE7dny`fF
zc%%ECyfkauWyyWNOv=HGsN5Nck#Ax477PWGW#$<sT-mWwmmrRM9o%79Lq<2j;Sq~5
z@=QQo#TQ&%iFKH9aMG%mwp}?c!~3?f!@7`%rq4WVp!`NDhuEuI13gTx^XR#U1Xh1B
zP|6V%QhtELxJ_nsA{+`HzZnNaxXOlgb>-<Jv!^k9lzr;T!FC$k!re@@b#XWq_b+vk
zT=kNT!$<+L`vZcuwBN|LusU19i0ZXY`5s2L)v*$>fwWX}%87z$tMwmuDNr1G4&-XC
z%9)@IxrM4;%;;gn7xbEQ9gIs(`uyN|Le#eD3o#b;YODJmcV*1JB%2zZ(DWH=P4Sab
z7vDvA(ck^30j%^r%5l=@c>z<mb6s6PpZ9i{c?r#7q&ynA=e7`+3(R<V7lJz*rd_#)
zs^t{l7c)oiRWLjsttT;5xZR@94-8=a>Y4NpX;!zP9ES02?0YO$Oh?lf!Hh1Z9L~Kh
zCw~RXj7`El=3IqS;lhiN7arEYJ<#)lrJ`=!yFOzf`MDJXn92_AVO+5=ZE(+3-9D6Z
z@^+Rvf5Dh4vu=>`>eVh+S03rM<;ZHW`-r%K;%;1BEE>CR!u{Lz1w*6id0}gn)>1rY
zp9gkrz_;7=#ZW1a1JBCmbEGcDxO%Z=08@XB#9^XLj7$n2YxfLftm5WeT`s4Y^G%XA
z%irVTqLm@^I9o~23t<hKwwRDI79*8YpXa=xfvB1NhT~#=A@ZX1Up8{%5Xa26%b!HE
z`hWvjy=v#`lJsf(00f-<X8T8Y%a8H(>hdU&k#VdmYe$fK0F&<J97|nze(NW5VTd!{
z$QoG3&slVJNkl1?gVQ(XFJ>KrV8(%K3O}OPL!v^)=90gSpg2a?F59j2JvbRFyPQTU
zhp$(ci{-wa<Yf)0AiW12X3kK-@R@vmvgI)OQ)1pY1d~6s;>8kNIXEbF{!&gnHRV?b
zMikM{m6W;;Gi{J8B>CgRd<`ilw;s*d_-oDtVs$wZU9|qAuG8(N4fLeuMkog%DEy>q
zm&_E-0gZ7t5~D$5(1hB);(Km=b^q{EpmTIz#Lv^bl)Qezoi61I2}WpJ@gQLEaM~Uh
z3`@nV2lhA#Nv1C}t8%hf4-QK>6jP3%pUPE}a_nFALW9F#!|d2ZTzo!T%7L|&jU*Th
zuhQ*;@hTB{X~XQC8ZR>m?WorSOcKu2dPwFViDU-jJXdEK-;<m>rJKMc^r`kB7%wN|
z>*?>gzdCL(F=G{{KwSh)+mpoFcoatK4KS<{dBJnoc)=vCK<N#^u%(oL4u(_9*7W)Z
zhQ?Mgz83K)=7mkD%1Pi(+no}(k|$;S`EwXD?(Yx5NQd*|IMN1*N7_FZOp;T4y(<_S
zQ`yvl;ZG|c(P20*rd_#HX#0X8uWf#*OMasASHbZ7wBIP0P!GP`JB+Pr=72}1)L&4M
z@yhiIJE!t+kFs~A9GsT&)f^^?X?i`lucrAXDF^+cbg^KPuwvE{<GyJy{6iVAYJ)w)
z*{ItUjMK-I<7E=HXLvmZ)vofim;)vcantJyb%P0K+rVV-V@j?rnnc+u@;xkIWuprw
zhn`*|FflGnpK)=N9;Ysf7gkG`V>76ncj*fQQ!kJ^3<Ac#m(atwo?_+-YE$LsxN>Z2
z#otRCY+z;Y3WoRV$7`joWT2^YriZCmr7OqbSgI@W1v6K2W8AJUq?vkA)qM}Q*3XxB
z7&^zuDM2B9i_MkeK8alqI;>@qm?8hv3zRK~NvO_SBf;>fm7EGj>`BQGn7q2D>@|mB
zKKpCrFs=dlGAS6Qw~8M*j9ez)_XCq$U0V)gUi*GhP9EVj?Q*d|`)`zEmZ6CBczIqx
z-42&|fzpCD*X88ul3EWb2d(1gPrACupR&U!Cz+DUhmhDTMzFFETpW?;qMj>sHkn_(
zTv1N`?ud$w5i^wQAASs%zL0axB6;6yiyeXO=;u!ghUFtKVf=m$3I=(v@~L|mo%ZI>
zVHkk^*m@Y}zPFYRgV*!-FBp0f7s;DvhheYz^6W4s!OtBOj4orq3|k|IiM*KaNj9+W
z|GIK$E8o_07>9suL)>#Se?TZF?~IbVICPkHx-Yn<%4TTS;Y-l%z7OUw))%=SHuq8v
z55mvmcID*0n!lEmV;iZLNu(S`v5Gr8tj-_x@#jj)ahubR3%PQTg8um-7+#d}FCE5J
zVLJ{SUG-vyE63FPy4YcI>C8JDdzk#)I&c1H7vdjp+{1X;Po9<a^-H^noe0P1`|Q7C
z{(87_nDU;#>dFyx@O_N|OmU?>4ExXTpL~xPfp2fPawrbpE_N8hQ2RsbViNl2n=6Nm
z`}##NQa;sLAsAXs<$blWJ5kUW!QNa62IJxTZ&Hp}5l65thZZ7x#$e<X_<1s}F1eRV
z{^WZc`)Ut@krYWE_4nl5^7WN`58+dOnZrmS@O7eKoPsD5{XIqtsxc-CYrtYcP#O#_
zNXZLrkYB7`KaqCjh*En-FySN2_n^#Gd|&F~lBoN1f=TwSl4mgNSZGz<KjNHPXJdDw
zNz^&R_e5i>oEX8_s46BW7$>*NM-q&C7%H#IVJ2VRVVr_ShG28V)l+>YDum~#<xdzM
z6_=FnaTA3x>$+?Y6$5hRh@ts>w!<*AeHrTXi5-C=^4bNH^G*2O-}R|rglok<)fk?T
zZ(F!>Xb68VIE=&AKaT{%cTx8*9Y&vheE>$R1AfSp7l+~3`nIFP;8lEIyd&`_>=Iws
zIgB&P_d|Oa2EKPL^f2<hJ>4moFy=lN=`bEwQsb3!kn8>#@5&Ll@@+VW!4&xWLomr_
z_4Qv5<FdZ#3t3tu_Y9K*S5A%!Z!h#P*@dPY@0|D?DCM}#&Yc=h9|#7ip!_$%&~)k!
zg2N;Y#jjguA4%ZK?;n`_?K9u!><9*fS1KnjVA;Abc)qVIbx8-|!1Tr@nAlw2-g4z=
zRn4iCgIDow6;}>7S;-&eFhSJo)=~~8NXv`EG$-xKVe0w5fy3kiweB-FeR;UYUn9<L
zn&k$j8XFk&i=JmN0x$lWOI=tbpHrn>Fme~X^W0&$Z>2WmwLd-g;$N!V3aQI=L=`LQ
zVUk#?`waDfEoLzSa2-#V@I4uv+Jl0z8`NGEj9cX;Ou}GhuFx*1Mcpo1NWESueHP8+
z`;A?66UM#r*#+Z@ta=SjFnOELmr21Sp6usf2u8?IbmH&2(_tL8zHaJaTm<rTyTdpK
z{aj8krV1C+8?VFgIsLml4ucN!*Kz>k!oje4aTwY6zCG?RG^cNO_ApeKt&7>|>oqCI
z=2x)}hslFqo*Xy~73<4x593eYczdCTp@ux!br{x~f4(_Pl&8111cRhd_gn|C(wvgm
z!=I_w^TMeQ9qD1@k%^e9xfhIhqi>gV1w&E#`@Dzg*8?3!Fxs~X9VWbhFE8>v^32tG
z2nG-A+hMM*T+Q|8O3J~l`+Klgj?_?pEu|ci>+^L|j=S*K#-8j72A%Dn$*vq$jam;^
zPM*Eh^CzsWe+EchVf209PcTxVAq#X}c@Npw_fihRQr+!y7`olIA+zkCDXtujnSVAq
z4E1d1fH#+wFD~UsIZ?0OJ51slp6+xQjF!(yJB(nU?>7p@Q9)2nkC#H~taarGC|fx|
ztsx4gE-%OXyo%IibxU#}Pb>Mnk1L1I>FZc9+0u&dbeLRv)a_y^%b#UXeUaBPR1Tli
zmA^gebA5tA`Y0|<Fq|W;4+N8Q)!(aNl2K`7O`fdg=9BJ=<Tv?esI<Wnskcvhn9iqm
zm^?)9>oBp0kPWjJ@M}pv*YhI2uClrK9vBe;z2;an&>IGWj8OcL)I~k37?8ur7x3+S
z!O*5EZtpPRGW5I<??HrotRq|jzJYh1cfsoNq?>1h2!<xnXNq9l5L0~t!^)vE-g<Q8
zyoBWT<wY<_aq#C)Ft)F61Jf>=op`dp9)e+-`TUhDhj92DR1bsQ^f;p)#@!%22gshV
zBcA@F4KN&PJr4Q9g6drDa88TCrpF6LUX|`Mo}_*aj=qq+fr|0<GZ-NeC}Y(wCK5Tb
zdafjojLFjFu+}&W4d#p$i(%N=x{|u(pUL#a<$U_*f?z0Z-~N+vkkG5%C2<&br;!br
zQMQPi=YbdETuDZU_8ew8@kM-2I49j}o<HDBGUf1Nl_r<E__0Wg{vHFiz2PNI#Xw76
z;9sC5OuIs&lrS-QZ8>@S$YA&`%6gPG&}?@0dG1Tyu9v<@GOW)6I1E+pGdevCm*2E2
z<dPrJlX4Qv@)>u*xS$MQs{71YCcEbMYy&9=VS)i<FbO93^TG>L{DZsj$_a*l<$J7M
z!8jV!ZUu7>wfPp2U|45r{=iVYD&iyGbA+AWKQN9r#YRdwXi@9|-9Pk!dUsyR$%Py|
zm0>ajCYQ98g$l+iTPh=%y7&gji!U2s^7oB>uT#oNj<A^np>0*>mz0xtU6jV+?{}d$
zI9b#<&=MTL{<=|)EK-hsT@GW4-dIet|FnyK?xONdxjMw79vl5&)08kSXZYGgz9(z0
z<wdd=<Oc9CS(9?|Jep}2sz5~urGHTRn9#Z|u?eD>29pPiZ8@H4RMw+>4+}wASb`DP
zfHC&vK(annw!QR)h=s}?bQl3R<ylBMQW^c|u`7pT=CjR$ahRz$haE<~vR!jhIutA8
z%HbQR(^kGG5Ao@}g{zBWX670CPrU->zDMj>c^mRQwvo>?NIA*)R+ge*@CQEg?aJZY
ztCLI0Nr2zTDVSn&UEL0X@1G0QCEmk;^_p|&scd4YE6lQO7lw$-{-!SEwX(jYE*6K;
z8$@Eb1ZdlZnEC?@7wPvl@au(DAdSUfu&@5hh^`zNEB?)i9wrY04{NuF$pxuldaZ{^
zRAks*aG3Cko&`OCaRiv}!Djd`YxK&&e0%fU!(diC9VQseh58%bJq!cOoBIJwa(UFe
zaIYM~Ue5~|9C*dU<g`~;-q0Slrya(f8vktUVe+7=9vhY@fp%LLyV$ltLEox&-$N<-
zx7d0Zde=M8$>xyt<;?T@3`Y7m)P*-*!LSZIi&yG$zY(%|nC|Rhu$yXLq#T@<XVbWH
zl0xoz{5?!I=CD1}!@9hBG0a9Ht542umGRxfh+%l1V-Mqx-g(T0!^B4S7!HS#Rz(`A
zH(uu*;3)et2?odGzdGvb;=1^Z(*TC2?2kk0a)ZXxVZCxR;jzsF7>eBVg=<fK7L_X}
z$y;6&yobp%$-Yd|F7A>1?Zf{%w|eCya$m;$tl5Eba;3@E<rbyC7o-iCE|0zL)s;jy
zGY;GoKTE`w<B3bcK)MZ#2>(T%UO7%O@2nWWAZdqr2R)4VpclCsz=&s=z7PoWqk*m*
z@c^{8?hE3FDpD98nB+2Q4Ds`$@A5tN5Xw%=5Pku|>+fkP$B|bmhsp1GIqrKX9j(`>
z%O>>C&|Wz?y7ipGgs^?}ToLm^MHmdX$7e3w_sCr(UtEuuo$A~2y>k4OaE~>27@oIp
zTl6q)lz3;)0ET`sbA^wibvxtbg#kZ{zE_vzX}cceEy0cIKFd~6dX4YlBf_}oa<~;d
z5M(f1ek1o#efS@GFUY{S3#9AfI{VQM*JrE)|5kbrgAOt}N1{}I)@QFA=cShkI)JHH
zM|&9IBBK+<LG)ipa^*Nw{Y;Mm46@J25V;0^)~72cZ<W}-kZI)KGU=6*fPjCdF!x-?
z_M@7;a$+j$JxJ$>yqGltLrds+mWL5N`@Z)*u{UhHVmz9$;hg(yTCc8LAvF7(Tn&Bh
z%Q(pG@tBZaUECSd2J;Eqr~52|>)&jXx)OY{>kB4Mwi+)ODPmfepdz>nY0JqY;=_D{
zUK?`xU(2qf@A{d21LerTvVDfsGJA%)a<|;{j~%USDH$6NC3rqWuMK!n&wm@h2oq>I
zz?Vdo*uD^YHv1fA3O%Xi1&k+Z%v^D5`59uaT?u#_d13eRWP#QPU?hK-c}5lc5v1Pt
zP?TOKZ4W~!+WA9k_)+zNa$FuUYecNWk3#m!iLYkM;Z56hldB2JzGpp%rIOyQ*9{}W
z=NWo!@c2_{{%{0J^DLjUeUU_8BO5p$s1DsOi{!s}?b@Y-{%zVGMyyTwB#Z+O)}AR$
z3ZUNmVC;0$7aV16cgpwVSw$m5@}Rz*D<Zq>Rx=JlC8fF~vnyXn+TigW*#H0X*?VK-
zCb+W4DaXsJeniEUbC{VwF#qM%UO6;^l>^BZvNDdl;NPwqsEZ7lxsrFcJb$`Z4z9(^
zm><AUr)JMk$iHFX%E68J*+M-`F4LNI!_6zrvm}OFxhIz3zi!z39<gI%mmmhjHf$Rl
zDav<Y?zwK@M{V5qBp7JUBN7=^MrN-ZnDYJPd)Vz(*P$diy0i?r>^C!ih@^kZv)6_M
z1dN=@pPI7kfwCv@&a@#xYa>H)k<`kDyWnX1LNSk1?e&G&lNZezz~qjFZWk-Z`Wo;^
zY+s{?<h2~DJH_9!a)pzEMQ+-_3ov#&Ca@4<wj5@hnF9iZe$>m2gTyrdMb!aJ{z|s_
zo?KckVO-BJvPO8O+%Dp0&o>0f&xYu=D}1au%WxV?`V_y>e_5?p7be5%V$_=d%Kkt(
zd_SYtNSg3@u7PrLWzEb1=9(Aj?3KeR@ghwQgVV<^)^)-B%(Q`WoWN#Id4|A$wWe2&
zQ_$*SadE6Z1@p752I^wC8`;34^ZznHubj^K9>9o9+PY$bnE8W=^s~Erb=fgi$HFK2
zw|#r%I0Y4_g)V^<^<Q=Gl_PYb_%$gfm)MMq<5!f{jjyr$&3fRau#eOkMW&JUXSh8~
z+MU_wlHYE8cDYgP|D8zJXE;zlx;TId!KV8n;V7%?i1(D{fUV$j&Aso*i%`QNgaeqQ
zC73qw-mFb6?v}Ni<c6~03gqf5Cb{_@Ub2;Ya%=sUe|vp_S@&X#0~qpRzlRexurCJ<
z$=BO#yKS}|G<fJ5L#OKx{^>95|L^^x{(t_9`~Tc8>HllLwBP?_{pDZY|Brq}|9{r6
z((nI9=pX(YJ_EyN;6HN)M(qEi-$?y`<~MTxU;mBL|3|-3`~Q{SX#K-~|LbR9&~(FB
zarg}U(-|1Of7ow~{=fPgv;Xh>jnzN=_rG}t#_s>0`;F88_x{H1|Lec;`v1&t{QiIb
zo1p(6|0eAJ_x&d7|D)f;{eR{+N&mm&H);RB@|&#x@BB^P|KIv?qW`t}Q}qA+zbX6w
z+Hb0U`<uFd`0xLN85lGq-FoBocid*^kg>PeZu6~nnq|E$2M?NM^X)d<cH?yh4_;@d
zp+iPmYw)1;w%lTyZ3l0+-nK)J9y%m-1&0pFw^+Yd<mjRO!G1&M57!-fz|du(w8ACE
ztL!&)lSL~*FeF`n+nu%=B-NtrYC{h?uva1;63#Jn$t9Ou>^J_o|MUmj4qf-4`TE8P
z_!kCI5C=(+23e2?MNkPw2u2J>3Puh_4Mqz_55@?_48{t^4#o+_4aN(`4<-mE3?>RD
z4kigE4JHdF52gsF45kXE4yFmF4W<jG4`v8v3}y;u4rUGdf@)9;>OmuD2CbkSbb@X$
zTQGYtM=)nFcQ8*dZ!ljlf3QHXV6afIaIi?QXs{Rr-QvL#!IHsJ!P3Dp!E(X!!3x2O
z!Ail(!79P3!D_+k!5YDu!CJxE!8*aZ!Fs{^!JuG+V8dXeVB=uZV6$NJV2fbOV5?wo
zuuZUSuwAfyutTt8uv4&euxqeeuzRpauxGGWuy?Reuy3$muzzqsa8Ph?a7ZvDI5apc
zI6OEaI5IdYI64>_91|QH92XoPoDiHCoD`fKoD!TGoEDrOoDrNEoE4lMoD-ZIoEMxQ
zTo7CsToha!ToPOwTozm&ToGIuToqg$ToYUyTo+s)+z{Lt+!Wj#+!EXx+!ov(+!5Rv
z+!fp%+!Ndz+!x#*JP<q>JQO?}JQ6$_JQh3=JQ+L{JRLj}JR3Y8yb!z?ycE0~yb`<`
zycWD3yb-(^ycN71yc4_|ycfJ5d=PvXd=z{fd=h*bd=`8jd=Y#Zd=-2hd=q>dd>4El
z{1E&Y{1p5g{1W^c{Kis;VHCz;5~g7m=3x<5!V$s|!;!*~!%@Of!_mUg!!g1!!?D7#
z!*RlK!|}rL!wJF(!->L)!%4zP!^y(Q!zsck!>Pil!)d~4!|B55!x_RE!<oXF!&$;v
z!@jT@*1~$&2%BLmY=@n&8_pKa9?lWY8O{~X9nKTZ8_pNbA1)9s7%mhp94-<r8ZHLq
zx_G!mxMa9gxOBKoxNNvwxO})mxMH|cxN^8kxN5jsxO%uoxMsLkxOTWsxNf*!xPCY&
z+#uXA+$h{Q+$7vI+$`KY+#=jE+$!8U92{;FZX0eFZXfOt?ilVA?i}tC?i%hE?jG(D
z?iubC?j7zE?i=nG?jIfy9vB`J9vmJL4hatp4+{?uj|h(pj|z_thla<5$A-s+$A>3`
zCx$15Cx@qmr-rA6r-x^RXNG5mXNTv6=Z5En=Z6=B7ls#w7l)UGmxh;xmxot`SB6)G
zSBKYx*M`@H*M~QRH-<NbH;1=`w}!Wcw}*FxcZPR`cZc_c_lEa{_lFOJ4~7qg4~LJ0
zkA{zhkB3i$Pliv0PlwNh&xX&1&xbFBFNQCLFNd#$uZFLMuZM4hZ-#G$Z-?)M?}qP%
z?}s0RABG==ABUfWpN5}>pNC(BUxr_WUx(j>--h3X--kbhKZZYrKZn1BzlOiD(ZeW;
z;wXvID2wu_h$_(t(TLGV(a6y#(WudA(df|_(U{R#(b&;A(YVog(fH8>(S*@N(Ztat
z(WKF2(d5w-(Uj3t(bUm2(X`QY(e%*_(Tved(ag~-(X3HlRE=s;J!(YFs1>!NPSlNN
zi)N4Jh~|vuisp{yiRO*wi{_6Oh!%_%iWZI*i586(gEC({S|VC9S}IyPS|(aHS}s~X
zS|M67S}9sNS|wUFS}j^VS|eIBS}R&RS|?gJS}$5Z8We31Z5VA7Z5(Y9Z5nMBZ60kA
zZ5eG9Z5<7cwu!clwu`opc8GS2c8Ye6c8PY4c8hk8_K5b3_KNn7_KEh5_KWt94u}qn
z4vG$r4vB_Dhen4*het<5M@C0QM@K`WW1?fD<D%oE6QUENlcJNOQ=(I&)1uR(Gomx2
zv!b)3bE5O2^P>x*3!{soi=#`TOQXx8%cCo!tD>u;YocqT>!RzU8=@Pdo1&YeTcTT|
z+oIc}JEA+IyP|udd!zfJ`=bY<2cw6ghoeWLN2AB0$D=2rC!?pLr=w@0XQSt$=c5;*
z7o(S=m!nsr*P_>>H=;MAx1zVBccOQr_oDZs52KHwkE2hbPovMG&!aD*FQc!bucL3G
zZ=>&`@1q~0AETe5pQB%*U!&hp?qM9oah%3koX166iARV>j7N$`jz@_{jYo?|kH?6|
zjK_+{j>n0|jmL|}k0*#Hj3<gGjwgvHjVFsIkEe*IjHimHj;D#Iji-yJk7tNyjAx2x
zj%SHyjr-ziT#M^*BW}j6xE*)mZaiB&dpt)xXFOLtcRWu#Z#-W-f4o4vV7ySgaJ)#o
zXuKF<kj3LA;w9sy;-%wd;$`FI;^pHN;uYhS;+5l7;#K3-;??6d;x*&7;<e*-;&tQo
z;`QS}@dojR@ka5+@h0)6@n-Sn@fPux@mBHH@!)uyc-wfpc>8#Vc*l6Bc;|SRc-MHh
zc=vdZc+YsRc<*?hc;9%xc>nl-_`vv}_~7`Ecu0I`d{}&Vd_;U?d{lgNJTyKgJ~los
zK0ZDnJ~2KiJ~=)mJ~ciqK0Q7oJ~KWmK07`qJ~uuuK0m%7zA(NhzBs-lzBIlpzC6An
zzB0ZlzB;}pzBaxtzCOMozA?TjzB#@nzBRrrzCFGpzB9fnzB|4rzBj%vzCV5-elUJ0
zemH(4el&h8ems66elmV4emZ_8el~tCem;I7eldP2emQ<6el>nAem#C8elvb6emj0A
zem8zEen0*o{xJS1{y6?5{xtq9{yhF7{xbe5{yP39{x<$D{yzR8{xSY3{yF|7{x$xM
zgFQ^5Bu<hfO|m3UilmZ^kc^m&l#HB=l8l;+mW-Z^k&Ky)m5iN?lZ=~;myDlGkW83N
zluVpVl1!RRmQ0>ZkxZFPl}w#XlT4dTmrS3`kj$9Ol+2vWlFXX)CDo*s)RRWiOj=1h
z=_K7`wq*8Xj%3bcu4L|Ho@Cx+zGVJnfn>pCp=9A?kz~<iF~VDmCrcztCQBttC(9(u
zCd(zuCo3c?CMzW?C#xi@CaWc@Cu<~YCTk^YC+j5ZChH~ZCxem=k`0rMl8uv1l1-D%
zlFgGXk}Z?1lC6`$$u`Nh$#%*1$qvbm$xg}6$u7yR$!^K+$sWm`$zI9c$v(-x$$rWH
z$pOiM$wA4%$sx&*<j~}><nZK(<jCZx<mhB*a!hh;a$ItJazb)qa#C_~a!PV)a$0hF
zaz=7ya#nJ7a!zt?a$a(NazS!oa#3<|a!GP&a#?bDaz%1wa#eD5a!qn=a$RzLazk=s
za#M11a!Yb+a$9nHaz}D!a#wP9a!+z^a$j<P@<8%n@=)?{@<{S%@>ueC@<j4v@>KG4
z@=Wq<@?7$K@<Q@r@>240@=Ee*@>=qG@<#Gz@>cS8@=o$@@?P?O@<H-p@=@|}@=5Y(
z@>%kE@<sAx@>TM6@=fw>@_q6{@?-K-@^kWQ@>>$5VH%}znxtu(rFmMUm2`x3#B`)|
z<aCsD)O56T^mL4L%yg`D>~!38ymb6@f^@=kqIBYPl62B^vUKuvige0!s&wjfnsnN9
zx^((<hIGbsrgY|XmUPy%FRiAvw4OH7X4*>IX(#Qbv!%1AbEI>obER{q^Q7~p^QH5r
z3#1FC3#ALEi=>ODixH??JY6DPGF>WNI$b7RHeD`VK3y?gDP1{TC0#XLEnPibBV99H
zD_uKXCtWvPFI_(!lx~o2m~NDAoNkhCnr@bEo^FwDnQoPCoeoa7Nw-b6OSeyVNOw$k
zN_S3oNq0?mOLtHANcT+lO7~9pN%u|nOZQI?NDoX8N)JvCNr$9|riZ16r$?kmrbnem
zr$f_Y(qq%((&N(;(i78@(v#Cu(o@sZ($mv3(lgVu(zDZZ(sR@E((}^`(hJjz(u>ne
z(o56J(#z8;(ks)e(yP;J(reS}((BV3(i_v8(woy;(p%Hp(%aKJ(mT_;(!0}p(tFeU
z()-f~(g)Lr(udPW(nr(B(#O*$(kIiW(x=mB(r44>(&y6`(ihX0(wEa$(pS^h($~{B
z(l^t$(znxh(s$GM()ZI3(ht**(vQ<m(ofUR($CW`(l67m(y!BR(r?r6((ltB(jU{G
z(x1~`(qGfx(jW`7D2uZsOS3G?vm&cxBV;3HBV{9JqhzCIqh+IKV`O7yV`XD!<7DGz
z<7MM#6J!%+6J--;lVp=-lVy`<Q)E+SQ)N?U(`3_T(`D0VGh{PnGi5Vpvt+YoeOWcD
zW%aC)wX$~B$-3EW+3eXI*__#2+1%MY*}U0&+5Fi8*@D?Z*}~Z(*`nEEgryhHmdKXO
zmdcjSmdTdQmdlpUR>)S&R?1e+R>@Y)R?Ak;*2vb(*2>n-*2&h**3SlI8)O@18)X}3
zn`E12n`N74TVz{iTV-2kgR^b2ZL{sN?Xw-S9kZRXowHrCU9;V?-LpNiJ+r;Cy|aC?
zeY5?t{j&qI1G9s&gR?`jA=#nXVcFr?5!sR1QQ6Vi(CnD(*zCCM`0Rx2#O$Q(<m{B}
z)a<nE^z4l6%<Sy!ob24}yzKn!g6zWVqU_@AlI+s#vh4EgitNhls_g3Qn(W%_y6pPw
zhU~`drtIeI*6g<I_Uw-A&g`!2?(ClI-t4~Y{_KJ5!R(>z;p~y@(d@D8iR{VjsqE?O
zne5r@x$ODuh3v)brR?SGmF(5*wd{@T&Fro0?d+ZG-R!;W{p^G6!|bE%<Lr~{v+VQi
zi|otntL*FSo9x@{yX^byhwR7fr|jqKm+aT<w=BrRJj&xd$<sW`^SsC_`3U)l`AGT5
z`6&6Q`Dpp*`55__`Plh5`MCLb`S|$+`GomI`Na7o`DFRz`4st-`BeGT`84^o`E>d8
z`3(7t`AqrD`7HUYd0$@5>v<z@=B>P)ck*sNTRwX}M?PmhS3Y+>Pd;xxUp{}nK)ztU
zP`+@!NWN&k7zqc9=S$>E=1b*E=gZ{F=F8>F=PTwb<tyi_<g4bZ<*Vmw<ZI?@<!k5b
z<m=|^<?H8z@(uD0^NsS2^G)(i^Ud<j^DXi%^R4s2`8N5s`F8pC`40Jx`A+%H`7Zgc
z`EL2{`5yV6`Cj?n`9Ar+`F{ES`2qQX`9b-?`62m`{LuWc{P6sU{K)*M{OEjWeoTIB
zeq4ThenNg?eo}sNeoB67ep-Hdenx&~epY^VeolUFeqMflenEa=eo=mLeo205etCXH
zer0}Desz9Ler<kTetmvJeq(-9esg|HertYPetUjLerJAHes_LPes6wXet-Tz{$T!4
z{&4<C{%HPK{&@aG{$&1C{&fCK{%rnS{(SyI{$l=8{&N0G{%ZbO{(AmK{$~DG{&xOO
z{$Bom{z3j>{!#vM{z?96{#pKc{zd*}{#E{U{!RXE{$2ik{zLv_{!{*Q{!9LA{#zat
zVG$K^krZi>6?st<m12Zq#A2jk<YJU!)MB(^^kR%+%wnu!>|&f^++w_9{9=M)!eXLg
z;$o6w(qgh=@?wf&%3`Ww>SCH=+G6@*hGNEIrefw|mSWbTuc#KaqFywLX3;9zMW^T%
zvlX)!a};wHa}{$J^A__J^A`&g3l<9%3m1zNi;+mOc(FvWWU*ASbg@jaY_VLie6d2Y
zVzE-Oa<NLWYOz|eda*{aX0cYWcCk*eZn0jmele)npxCh3sMxsJq}a6Btk}HRqS&(7
zs@S?1Tx?TpTWnWsU+hrqSnO2nT<lWpTI^QrUhGlqS?pEpUF=irTkKctUmQ>zSR7Ow
zTpUsiDGn_TD-JJ?D2^<SDvmCO7RMCF7RMFG7bg@a7AF-a7pD}b7N-@b7iSb_7H1V_
z7v~h`7Uvb`7Z(&478ey47nc;57MB&57grQl7FQKl7uOWm7S|Qm7dI3)7B>|)7q=9*
z7Pl3*7k3nQ7IzhQ7xxtR7WWnR7Y`H<77rB<7mpN=7LOH=7f%#V7EcvV7ta*W7S9#W
z7cUeq7B3Yq7q1kr7Oxer7jG1A7H<`A7w;7B7Vj1B7atTK79SNK7oQZL7M~TL7he=#
z7GD)#7vB`$7T*=$7e5p~7C#j~7rzw07QYoiC9Fi1xRO-TN><4$MWs?1p)z7+q{_&Z
zQ7WTWMyrfo8KW|0Wvt5Bm2oQLR>rH0UzwmXVP&Gq#Fa@ZlU63HOkSCyGG%3|%G8x<
zD$`b`t4v>+p)zA-rpnBfSt_$u`YP2*tx~TvD$Po((ynwW-O6m0*(-BYhQb^TNw;z=
z)+UQUI&IR=e}t0SWC{L9aZ)P)^jN0wA975i{I@u!S^g=<G}oWvn3nxZ9MdKq$Fy~c
zW7_2(a7+jOM{!J#dmPhq!#Sqm9Mf=)=|7TVI`<DarYrsg$8`5!=9pgn1CHr~e}Q94
zhI35AIi}$p)Bn>P(|5mfOuzg^j%l2~kz-n6ILGwAm}6@Gk8w=v{jD6+S$~;hy5&!B
zOppIlj_LJ($T5BTZ{wK8`U8$>(m%m5)&30}(+d9r$F$Yo$T3~^f01K)_iyKzru$1A
Z(>#V_T68$a^#1|JG^b;kw%cZw{{yJy8^8bn

literal 0
HcmV?d00001

diff --git a/cirtorch/__init__.py b/cirtorch/__init__.py
new file mode 100755
index 0000000..bc127dd
--- /dev/null
+++ b/cirtorch/__init__.py
@@ -0,0 +1,6 @@
+from . import datasets, examples, layers, networks, utils
+
+from .datasets import datahelpers, genericdataset, testdataset, traindataset
+from .layers import functional, loss, normalization, pooling
+from .networks import imageretrievalnet
+from .utils import general, download, evaluate, whiten
\ No newline at end of file
diff --git a/cirtorch/datasets/__init__.py b/cirtorch/datasets/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/cirtorch/datasets/datahelpers.py b/cirtorch/datasets/datahelpers.py
new file mode 100755
index 0000000..c37c5b9
--- /dev/null
+++ b/cirtorch/datasets/datahelpers.py
@@ -0,0 +1,56 @@
+import os
+from PIL import Image
+
+import torch
+
+def cid2filename(cid, prefix):
+    """
+    Creates a training image path out of its CID name
+    
+    Arguments
+    ---------
+    cid      : name of the image
+    prefix   : root directory where images are saved
+    
+    Returns
+    -------
+    filename : full image filename
+    """
+    return os.path.join(prefix, cid[-2:], cid[-4:-2], cid[-6:-4], cid)
+
+def pil_loader(path):
+    # open path as file to avoid ResourceWarning (https://github.com/python-pillow/Pillow/issues/835)
+    with open(path, 'rb') as f:
+        img = Image.open(f)
+        return img.convert('RGB')
+
+def accimage_loader(path):
+    import accimage
+    try:
+        return accimage.Image(path)
+    except IOError:
+        # Potentially a decoding problem, fall back to PIL.Image
+        return pil_loader(path)
+
+def default_loader(path):
+    from torchvision import get_image_backend
+    if get_image_backend() == 'accimage':
+        return accimage_loader(path)
+    else:
+        return pil_loader(path)
+
+def imresize(img, imsize):
+    img.thumbnail((imsize, imsize), Image.ANTIALIAS)
+    return img
+
+def flip(x, dim):
+    xsize = x.size()
+    dim = x.dim() + dim if dim < 0 else dim
+    x = x.view(-1, *xsize[dim:])
+    x = x.view(x.size(0), x.size(1), -1)[:, getattr(torch.arange(x.size(1)-1, -1, -1), ('cpu','cuda')[x.is_cuda])().long(), :]
+    return x.view(xsize)
+
+def collate_tuples(batch):
+    if len(batch) == 1:
+        return [batch[0][0]], [batch[0][1]]
+    return [batch[i][0] for i in range(len(batch))], [batch[i][1] for i in range(len(batch))]
\ No newline at end of file
diff --git a/cirtorch/datasets/genericdataset.py b/cirtorch/datasets/genericdataset.py
new file mode 100755
index 0000000..fed190a
--- /dev/null
+++ b/cirtorch/datasets/genericdataset.py
@@ -0,0 +1,121 @@
+import os
+import pdb
+
+import torch
+import torch.utils.data as data
+
+from cirtorch.datasets.datahelpers import default_loader, imresize
+
+
+class ImagesFromList(data.Dataset):
+    """A generic data loader that loads images from a list 
+        (Based on ImageFolder from pytorch)
+    Args:
+        root (string): Root directory path.
+        images (list): Relative image paths as strings.
+        imsize (int, Default: None): Defines the maximum size of longer image side
+        bbxs (list): List of (x1,y1,x2,y2) tuples to crop the query images
+        transform (callable, optional): A function/transform that  takes in an PIL image
+            and returns a transformed version. E.g, ``transforms.RandomCrop``
+        loader (callable, optional): A function to load an image given its path.
+     Attributes:
+        images_fn (list): List of full image filename
+    """
+
+    def __init__(self, root, images, imsize=None, bbxs=None, transform=None, loader=default_loader):
+
+        images_fn = [os.path.join(root,images[i]) for i in range(len(images))]
+
+        if len(images_fn) == 0:
+            raise(RuntimeError("Dataset contains 0 images!"))
+
+        self.root = root
+        self.images = images
+        self.imsize = imsize
+        self.images_fn = images_fn
+        self.bbxs = bbxs
+        self.transform = transform
+        self.loader = loader
+
+    def __getitem__(self, index):
+        """
+        Args:
+            index (int): Index
+        Returns:
+            image (PIL): Loaded image
+        """
+        path = self.images_fn[index]
+        img = self.loader(path)
+        imfullsize = max(img.size)
+
+        if self.bbxs is not None:
+            print('self.bbxs>>>ok')
+            img = img.crop(self.bbxs[index])
+
+        if self.imsize is not None:
+            if self.bbxs is not None:
+                print('self.bbxs and self.imsize>>>ok')
+                img = imresize(img, self.imsize * max(img.size) / imfullsize)
+            else:
+                print('not self.bbxs and self.imsize>>>ok')
+                img = imresize(img, self.imsize)
+
+        if self.transform is not None:
+            print('self.transform>>>>>ok')
+            img = self.transform(img)
+
+        return img, path
+
+    def __len__(self):
+        return len(self.images_fn)
+
+    def __repr__(self):
+        fmt_str = 'Dataset ' + self.__class__.__name__ + '\n'
+        fmt_str += '    Number of images: {}\n'.format(self.__len__())
+        fmt_str += '    Root Location: {}\n'.format(self.root)
+        tmp = '    Transforms (if any): '
+        fmt_str += '{0}{1}\n'.format(tmp, self.transform.__repr__().replace('\n', '\n' + ' ' * len(tmp)))
+        return fmt_str
+
+class ImagesFromDataList(data.Dataset):
+    """A generic data loader that loads images given as an array of pytorch tensors
+        (Based on ImageFolder from pytorch)
+    Args:
+        images (list): Images as tensors.
+        transform (callable, optional): A function/transform that image as a tensors
+            and returns a transformed version. E.g, ``normalize`` with mean and std
+    """
+
+    def __init__(self, images, transform=None):
+
+        if len(images) == 0:
+            raise(RuntimeError("Dataset contains 0 images!"))
+
+        self.images = images
+        self.transform = transform
+
+    def __getitem__(self, index):
+        """
+        Args:
+            index (int): Index
+        Returns:
+            image (Tensor): Loaded image
+        """
+        img = self.images[index]
+        if self.transform is not None:
+            img = self.transform(img)
+
+        if len(img.size()):
+            img = img.unsqueeze(0)
+
+        return img
+
+    def __len__(self):
+        return len(self.images)
+
+    def __repr__(self):
+        fmt_str = 'Dataset ' + self.__class__.__name__ + '\n'
+        fmt_str += '    Number of images: {}\n'.format(self.__len__())
+        tmp = '    Transforms (if any): '
+        fmt_str += '{0}{1}\n'.format(tmp, self.transform.__repr__().replace('\n', '\n' + ' ' * len(tmp)))
+        return fmt_str
diff --git a/cirtorch/datasets/testdataset.py b/cirtorch/datasets/testdataset.py
new file mode 100755
index 0000000..9cd4f3d
--- /dev/null
+++ b/cirtorch/datasets/testdataset.py
@@ -0,0 +1,38 @@
+import os
+import pickle
+
+DATASETS = ['oxford5k', 'paris6k', 'roxford5k', 'rparis6k']
+
+def configdataset(dataset, dir_main):
+
+    dataset = dataset.lower()
+
+    if dataset not in DATASETS:    
+        raise ValueError('Unknown dataset: {}!'.format(dataset))
+
+    # loading imlist, qimlist, and gnd, in cfg as a dict
+    gnd_fname = os.path.join(dir_main, dataset, 'gnd_{}.pkl'.format(dataset))
+    with open(gnd_fname, 'rb') as f:
+        cfg = pickle.load(f)
+    cfg['gnd_fname'] = gnd_fname
+
+    cfg['ext'] = '.jpg'
+    cfg['qext'] = '.jpg'
+    cfg['dir_data'] = os.path.join(dir_main, dataset)
+    cfg['dir_images'] = os.path.join(cfg['dir_data'], 'jpg')
+
+    cfg['n'] = len(cfg['imlist'])
+    cfg['nq'] = len(cfg['qimlist'])
+
+    cfg['im_fname'] = config_imname
+    cfg['qim_fname'] = config_qimname
+
+    cfg['dataset'] = dataset
+
+    return cfg
+
+def config_imname(cfg, i):
+    return os.path.join(cfg['dir_images'], cfg['imlist'][i] + cfg['ext'])
+
+def config_qimname(cfg, i):
+    return os.path.join(cfg['dir_images'], cfg['qimlist'][i] + cfg['qext'])
diff --git a/cirtorch/datasets/traindataset.py b/cirtorch/datasets/traindataset.py
new file mode 100755
index 0000000..cbb2056
--- /dev/null
+++ b/cirtorch/datasets/traindataset.py
@@ -0,0 +1,247 @@
+import os
+import pickle
+import pdb
+import numpy as np
+import torch
+import torch.utils.data as data
+
+from cirtorch.datasets.datahelpers import default_loader, imresize, cid2filename
+from cirtorch.datasets.genericdataset import ImagesFromList
+from cirtorch.utils.general import get_data_root
+
+class TuplesDataset(data.Dataset):
+    """Data loader that loads training and validation tuples of 
+        Radenovic etal ECCV16: CNN image retrieval learns from BoW
+
+    Args:
+        name (string): dataset name: 'retrieval-sfm-120k'
+        mode (string): 'train' or 'val' for training and validation parts of dataset
+        imsize (int, Default: None): Defines the maximum size of longer image side
+        transform (callable, optional): A function/transform that  takes in an PIL image
+            and returns a transformed version. E.g, ``transforms.RandomCrop``
+        loader (callable, optional): A function to load an image given its path.
+        nnum (int, Default:5): Number of negatives for a query image in a training tuple
+        qsize (int, Default:1000): Number of query images, ie number of (q,p,n1,...nN) tuples, to be processed in one epoch
+        poolsize (int, Default:10000): Pool size for negative images re-mining
+
+     Attributes:
+        images (list): List of full filenames for each image
+        clusters (list): List of clusterID per image
+        qpool (list): List of all query image indexes
+        ppool (list): List of positive image indexes, each corresponding to query at the same position in qpool
+
+        qidxs (list): List of qsize query image indexes to be processed in an epoch
+        pidxs (list): List of qsize positive image indexes, each corresponding to query at the same position in qidxs
+        nidxs (list): List of qsize tuples of negative images
+                        Each nidxs tuple contains nnum images corresponding to query image at the same position in qidxs
+
+        Lists qidxs, pidxs, nidxs are refreshed by calling the ``create_epoch_tuples()`` method, 
+            ie new q-p pairs are picked and negative images are remined
+    """
+
+    def __init__(self, name, mode, imsize=None, nnum=5, qsize=2000, poolsize=20000, transform=None, loader=default_loader):
+
+        if not (mode == 'train' or mode == 'val'):
+            raise(RuntimeError("MODE should be either train or val, passed as string"))
+
+        if name.startswith('retrieval-SfM'):
+            # setting up paths
+            #data_root = get_data_root()
+            #db_root = os.path.join(data_root, 'train', name)
+            #ims_root = os.path.join(db_root, 'ims')
+            db_root = '/home/lc/project/Search_By_Image_Upgrade/cirtorch/IamgeRetrieval_dataset'
+            ims_root = '/home/lc/project/Search_By_Image_Upgrade/cirtorch/IamgeRetrieval_dataset/train'
+            # loading db
+            db_fn = os.path.join(db_root, '{}.pkl'.format('train'))
+            with open(db_fn, 'rb') as f:
+                db = pickle.load(f)[mode]
+    
+            # setting fullpath for images
+            self.images = [cid2filename(db['cids'][i], ims_root) for i in range(len(db['cids']))]
+
+        #elif name.startswith('gl'):
+            ## TODO: NOT IMPLEMENTED YET PROPOERLY (WITH AUTOMATIC DOWNLOAD)
+
+            # setting up paths
+            #db_root = '/mnt/fry2/users/datasets/landmarkscvprw18/recognition/'
+            #ims_root = os.path.join(db_root, 'images', 'train')
+    
+            # loading db
+            #db_fn = os.path.join(db_root, '{}.pkl'.format('train'))
+            #with open(db_fn, 'rb') as f:
+            #    db = pickle.load(f)[mode]
+    
+            # setting fullpath for images
+            self.images = [os.path.join(ims_root, db['cids'][i]) for i in range(len(db['cids']))]
+        else:
+            raise(RuntimeError("Unknown dataset name!"))
+
+        # initializing tuples dataset
+        self.name = name
+        self.mode = mode
+        self.imsize = imsize
+        self.clusters = db['cluster']
+        self.qpool = db['qidxs']
+        self.ppool = db['pidxs']
+
+        ## If we want to keep only unique q-p pairs 
+        ## However, ordering of pairs will change, although that is not important
+        # qpidxs = list(set([(self.qidxs[i], self.pidxs[i]) for i in range(len(self.qidxs))]))
+        # self.qidxs = [qpidxs[i][0] for i in range(len(qpidxs))]
+        # self.pidxs = [qpidxs[i][1] for i in range(len(qpidxs))]
+
+        # size of training subset for an epoch
+        self.nnum = nnum
+        self.qsize = min(qsize, len(self.qpool))
+        self.poolsize = min(poolsize, len(self.images))
+        self.qidxs = None
+        self.pidxs = None
+        self.nidxs = None
+
+        self.transform = transform
+        self.loader = loader
+
+        self.print_freq = 10
+
+    def __getitem__(self, index):
+        """
+        Args:
+            index (int): Index
+
+        Returns:
+            images tuple (q,p,n1,...,nN): Loaded train/val tuple at index of self.qidxs
+        """
+        if self.__len__() == 0:
+            raise(RuntimeError("List qidxs is empty. Run ``dataset.create_epoch_tuples(net)`` method to create subset for train/val!"))
+
+        output = []
+        # query image
+        output.append(self.loader(self.images[self.qidxs[index]]))
+        # positive image
+        output.append(self.loader(self.images[self.pidxs[index]]))
+        # negative images
+        for i in range(len(self.nidxs[index])):
+            output.append(self.loader(self.images[self.nidxs[index][i]]))
+
+        if self.imsize is not None:
+            output = [imresize(img, self.imsize) for img in output]
+        
+        if self.transform is not None:
+            output = [self.transform(output[i]).unsqueeze_(0) for i in range(len(output))]
+
+        target = torch.Tensor([-1, 1] + [0]*len(self.nidxs[index]))
+
+        return output, target
+
+    def __len__(self):
+        # if not self.qidxs:
+        #     return 0
+        # return len(self.qidxs)
+        return self.qsize
+
+    def __repr__(self):
+        fmt_str = self.__class__.__name__ + '\n'
+        fmt_str += '    Name and mode: {} {}\n'.format(self.name, self.mode)
+        fmt_str += '    Number of images: {}\n'.format(len(self.images))
+        fmt_str += '    Number of training tuples: {}\n'.format(len(self.qpool))
+        fmt_str += '    Number of negatives per tuple: {}\n'.format(self.nnum)
+        fmt_str += '    Number of tuples processed in an epoch: {}\n'.format(self.qsize)
+        fmt_str += '    Pool size for negative remining: {}\n'.format(self.poolsize)
+        tmp = '    Transforms (if any): '
+        fmt_str += '{0}{1}\n'.format(tmp, self.transform.__repr__().replace('\n', '\n' + ' ' * len(tmp)))
+        return fmt_str
+
+    def create_epoch_tuples(self, net):
+
+        print('>> Creating tuples for an epoch of {}-{}...'.format(self.name, self.mode))
+        print(">>>> used network: ")
+        print(net.meta_repr())
+
+        ## ------------------------
+        ## SELECTING POSITIVE PAIRS
+        ## ------------------------
+
+        # draw qsize random queries for tuples
+        idxs2qpool = torch.randperm(len(self.qpool))[:self.qsize]
+        self.qidxs = [self.qpool[i] for i in idxs2qpool]
+        self.pidxs = [self.ppool[i] for i in idxs2qpool]
+
+        ## ------------------------
+        ## SELECTING NEGATIVE PAIRS
+        ## ------------------------
+
+        # if nnum = 0 create dummy nidxs
+        # useful when only positives used for training
+        if self.nnum == 0:
+            self.nidxs = [[] for _ in range(len(self.qidxs))]
+            return 0
+
+        # draw poolsize random images for pool of negatives images
+        idxs2images = torch.randperm(len(self.images))[:self.poolsize]
+
+        # prepare network
+        net.cuda()
+        net.eval()
+
+        # no gradients computed, to reduce memory and increase speed
+        with torch.no_grad():
+
+            print('>> Extracting descriptors for query images...')
+            # prepare query loader
+            loader = torch.utils.data.DataLoader(
+                ImagesFromList(root='', images=[self.images[i] for i in self.qidxs], imsize=self.imsize, transform=self.transform),
+                batch_size=1, shuffle=False, num_workers=8, pin_memory=True
+            )
+            # extract query vectors
+            qvecs = torch.zeros(net.meta['outputdim'], len(self.qidxs)).cuda()
+            for i, input in enumerate(loader):
+                #print('*********************',input,type(input))
+                #print('#######################',type(input))
+                qvecs[:, i] = net(input[0].cuda()).data.squeeze()
+                if (i+1) % self.print_freq == 0 or (i+1) == len(self.qidxs):
+                    print('\r>>>> {}/{} done...'.format(i+1, len(self.qidxs)), end='')
+            print('')
+
+            print('>> Extracting descriptors for negative pool...')
+            # prepare negative pool data loader
+            loader = torch.utils.data.DataLoader(
+                ImagesFromList(root='', images=[self.images[i] for i in idxs2images], imsize=self.imsize, transform=self.transform),
+                batch_size=1, shuffle=False, num_workers=8, pin_memory=True
+            )
+            # extract negative pool vectors
+            poolvecs = torch.zeros(net.meta['outputdim'], len(idxs2images)).cuda()
+            for i, input in enumerate(loader):
+                poolvecs[:, i] = net(input[0].cuda()).data.squeeze()
+                if (i+1) % self.print_freq == 0 or (i+1) == len(idxs2images):
+                    print('\r>>>> {}/{} done...'.format(i+1, len(idxs2images)), end='')
+            print('')
+
+            print('>> Searching for hard negatives...')
+            # compute dot product scores and ranks on GPU
+            scores = torch.mm(poolvecs.t(), qvecs)
+            scores, ranks = torch.sort(scores, dim=0, descending=True)
+            avg_ndist = torch.tensor(0).float().cuda()  # for statistics
+            n_ndist = torch.tensor(0).float().cuda()  # for statistics
+            # selection of negative examples
+            self.nidxs = []
+            for q in range(len(self.qidxs)):
+                # do not use query cluster,
+                # those images are potentially positive
+                qcluster = self.clusters[self.qidxs[q]]
+                clusters = [qcluster]
+                nidxs = []
+                r = 0
+                while len(nidxs) < self.nnum:
+                    potential = idxs2images[ranks[r, q]]
+                    # take at most one image from the same cluster
+                    if not self.clusters[potential] in clusters:
+                        nidxs.append(potential)
+                        clusters.append(self.clusters[potential])
+                        avg_ndist += torch.pow(qvecs[:,q]-poolvecs[:,ranks[r, q]]+1e-6, 2).sum(dim=0).sqrt()
+                        n_ndist += 1
+                    r += 1
+                self.nidxs.append(nidxs)
+            print('>>>> Average negative l2-distance: {:.2f}'.format(avg_ndist/n_ndist))
+            print('>>>> Done')
+
+        return (avg_ndist/n_ndist).item()  # return average negative l2-distance
diff --git a/cirtorch/examples/__init__.py b/cirtorch/examples/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/cirtorch/examples/test.py b/cirtorch/examples/test.py
new file mode 100755
index 0000000..02f5d58
--- /dev/null
+++ b/cirtorch/examples/test.py
@@ -0,0 +1,266 @@
+import argparse
+import os
+import time
+import pickle
+import pdb
+
+import numpy as np
+
+import torch
+from torch.utils.model_zoo import load_url
+from torchvision import transforms
+
+from cirtorch.networks.imageretrievalnet import init_network, extract_vectors
+from cirtorch.datasets.datahelpers import cid2filename
+from cirtorch.datasets.testdataset import configdataset
+from cirtorch.utils.download import download_train, download_test
+from cirtorch.utils.whiten import whitenlearn, whitenapply
+from cirtorch.utils.evaluate import compute_map_and_print
+from cirtorch.utils.general import get_data_root, htime
+
+PRETRAINED = {
+    'retrievalSfM120k-vgg16-gem'        : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/retrieval-SfM-120k/retrievalSfM120k-vgg16-gem-b4dcdc6.pth',
+    'retrievalSfM120k-resnet101-gem'    : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/retrieval-SfM-120k/retrievalSfM120k-resnet101-gem-b80fb85.pth',
+    # new networks with whitening learned end-to-end
+    'rSfM120k-tl-resnet50-gem-w'        : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/retrieval-SfM-120k/rSfM120k-tl-resnet50-gem-w-97bf910.pth',
+    'rSfM120k-tl-resnet101-gem-w'       : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/retrieval-SfM-120k/rSfM120k-tl-resnet101-gem-w-a155e54.pth',
+    'rSfM120k-tl-resnet152-gem-w'       : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/retrieval-SfM-120k/rSfM120k-tl-resnet152-gem-w-f39cada.pth',
+    'gl18-tl-resnet50-gem-w'            : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/gl18/gl18-tl-resnet50-gem-w-83fdc30.pth',
+    'gl18-tl-resnet101-gem-w'           : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/gl18/gl18-tl-resnet101-gem-w-a4d43db.pth',
+    'gl18-tl-resnet152-gem-w'           : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/gl18/gl18-tl-resnet152-gem-w-21278d5.pth',
+}
+
+datasets_names = ['oxford5k', 'paris6k', 'roxford5k', 'rparis6k']
+whitening_names = ['retrieval-SfM-30k', 'retrieval-SfM-120k']
+
+parser = argparse.ArgumentParser(description='PyTorch CNN Image Retrieval Testing')
+
+# network
+group = parser.add_mutually_exclusive_group(required=True)
+group.add_argument('--network-path', '-npath', metavar='NETWORK',
+                    help="pretrained network or network path (destination where network is saved)")
+group.add_argument('--network-offtheshelf', '-noff', metavar='NETWORK',
+                    help="off-the-shelf network, in the format 'ARCHITECTURE-POOLING' or 'ARCHITECTURE-POOLING-{reg-lwhiten-whiten}'," + 
+                        " examples: 'resnet101-gem' | 'resnet101-gem-reg' | 'resnet101-gem-whiten' | 'resnet101-gem-lwhiten' | 'resnet101-gem-reg-whiten'")
+
+# test options
+parser.add_argument('--datasets', '-d', metavar='DATASETS', default='oxford5k,paris6k',
+                    help="comma separated list of test datasets: " + 
+                        " | ".join(datasets_names) + 
+                        " (default: 'oxford5k,paris6k')")
+parser.add_argument('--image-size', '-imsize', default=1024, type=int, metavar='N',
+                    help="maximum size of longer image side used for testing (default: 1024)")
+parser.add_argument('--multiscale', '-ms', metavar='MULTISCALE', default='[1]', 
+                    help="use multiscale vectors for testing, " + 
+                    " examples: '[1]' | '[1, 1/2**(1/2), 1/2]' | '[1, 2**(1/2), 1/2**(1/2)]' (default: '[1]')")
+parser.add_argument('--whitening', '-w', metavar='WHITENING', default=None, choices=whitening_names,
+                    help="dataset used to learn whitening for testing: " + 
+                        " | ".join(whitening_names) + 
+                        " (default: None)")
+
+# GPU ID
+parser.add_argument('--gpu-id', '-g', default='0', metavar='N',
+                    help="gpu id used for testing (default: '0')")
+
+def main():
+    args = parser.parse_args()
+
+    # check if there are unknown datasets
+    for dataset in args.datasets.split(','):
+        if dataset not in datasets_names:
+            raise ValueError('Unsupported or unknown dataset: {}!'.format(dataset))
+
+    # check if test dataset are downloaded
+    # and download if they are not
+    download_train(get_data_root())
+    download_test(get_data_root())
+
+    # setting up the visible GPU
+    os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_id
+
+    # loading network from path
+    if args.network_path is not None:
+
+        print(">> Loading network:\n>>>> '{}'".format(args.network_path))
+        if args.network_path in PRETRAINED:
+            # pretrained networks (downloaded automatically)
+            state = load_url(PRETRAINED[args.network_path], model_dir=os.path.join(get_data_root(), 'networks'))
+        else:
+            # fine-tuned network from path
+            state = torch.load(args.network_path)
+
+        # parsing net params from meta
+        # architecture, pooling, mean, std required
+        # the rest has default values, in case that is doesnt exist
+        net_params = {}
+        net_params['architecture'] = state['meta']['architecture']
+        net_params['pooling'] = state['meta']['pooling']
+        net_params['local_whitening'] = state['meta'].get('local_whitening', False)
+        net_params['regional'] = state['meta'].get('regional', False)
+        net_params['whitening'] = state['meta'].get('whitening', False)
+        net_params['mean'] = state['meta']['mean']
+        net_params['std'] = state['meta']['std']
+        net_params['pretrained'] = False
+
+        # load network
+        net = init_network(net_params)
+        net.load_state_dict(state['state_dict'])
+        
+        # if whitening is precomputed
+        if 'Lw' in state['meta']:
+            net.meta['Lw'] = state['meta']['Lw']
+        
+        print(">>>> loaded network: ")
+        print(net.meta_repr())
+
+    # loading offtheshelf network
+    elif args.network_offtheshelf is not None:
+        
+        # parse off-the-shelf parameters
+        offtheshelf = args.network_offtheshelf.split('-')
+        net_params = {}
+        net_params['architecture'] = offtheshelf[0]
+        net_params['pooling'] = offtheshelf[1]
+        net_params['local_whitening'] = 'lwhiten' in offtheshelf[2:]
+        net_params['regional'] = 'reg' in offtheshelf[2:]
+        net_params['whitening'] = 'whiten' in offtheshelf[2:]
+        net_params['pretrained'] = True
+
+        # load off-the-shelf network
+        print(">> Loading off-the-shelf network:\n>>>> '{}'".format(args.network_offtheshelf))
+        net = init_network(net_params)
+        print(">>>> loaded network: ")
+        print(net.meta_repr())
+
+    # setting up the multi-scale parameters
+    ms = list(eval(args.multiscale))
+    if len(ms)>1 and net.meta['pooling'] == 'gem' and not net.meta['regional'] and not net.meta['whitening']:
+        msp = net.pool.p.item()
+        print(">> Set-up multiscale:")
+        print(">>>> ms: {}".format(ms))            
+        print(">>>> msp: {}".format(msp))
+    else:
+        msp = 1
+
+    # moving network to gpu and eval mode
+    net.cuda()
+    net.eval()
+
+    # set up the transform
+    normalize = transforms.Normalize(
+        mean=net.meta['mean'],
+        std=net.meta['std']
+    )
+    transform = transforms.Compose([
+        transforms.ToTensor(),
+        normalize
+    ])
+
+    # compute whitening
+    if args.whitening is not None:
+        start = time.time()
+
+        if 'Lw' in net.meta and args.whitening in net.meta['Lw']:
+            
+            print('>> {}: Whitening is precomputed, loading it...'.format(args.whitening))
+            
+            if len(ms)>1:
+                Lw = net.meta['Lw'][args.whitening]['ms']
+            else:
+                Lw = net.meta['Lw'][args.whitening]['ss']
+
+        else:
+
+            # if we evaluate networks from path we should save/load whitening
+            # not to compute it every time
+            if args.network_path is not None:
+                whiten_fn = args.network_path + '_{}_whiten'.format(args.whitening)
+                if len(ms) > 1:
+                    whiten_fn += '_ms'
+                whiten_fn += '.pth'
+            else:
+                whiten_fn = None
+
+            if whiten_fn is not None and os.path.isfile(whiten_fn):
+                print('>> {}: Whitening is precomputed, loading it...'.format(args.whitening))
+                Lw = torch.load(whiten_fn)
+
+            else:
+                print('>> {}: Learning whitening...'.format(args.whitening))
+                
+                # loading db
+                db_root = os.path.join(get_data_root(), 'train', args.whitening)
+                ims_root = os.path.join(db_root, 'ims')
+                db_fn = os.path.join(db_root, '{}-whiten.pkl'.format(args.whitening))
+                with open(db_fn, 'rb') as f:
+                    db = pickle.load(f)
+                images = [cid2filename(db['cids'][i], ims_root) for i in range(len(db['cids']))]
+
+                # extract whitening vectors
+                print('>> {}: Extracting...'.format(args.whitening))
+                wvecs = extract_vectors(net, images, args.image_size, transform, ms=ms, msp=msp)
+                
+                # learning whitening 
+                print('>> {}: Learning...'.format(args.whitening))
+                wvecs = wvecs.numpy()
+                m, P = whitenlearn(wvecs, db['qidxs'], db['pidxs'])
+                Lw = {'m': m, 'P': P}
+
+                # saving whitening if whiten_fn exists
+                if whiten_fn is not None:
+                    print('>> {}: Saving to {}...'.format(args.whitening, whiten_fn))
+                    torch.save(Lw, whiten_fn)
+
+        print('>> {}: elapsed time: {}'.format(args.whitening, htime(time.time()-start)))
+
+    else:
+        Lw = None
+
+    # evaluate on test datasets
+    datasets = args.datasets.split(',')
+    for dataset in datasets: 
+        start = time.time()
+
+        print('>> {}: Extracting...'.format(dataset))
+
+        # prepare config structure for the test dataset
+        cfg = configdataset(dataset, os.path.join(get_data_root(), 'test'))
+        images = [cfg['im_fname'](cfg,i) for i in range(cfg['n'])]
+        qimages = [cfg['qim_fname'](cfg,i) for i in range(cfg['nq'])]
+        try:
+            bbxs = [tuple(cfg['gnd'][i]['bbx']) for i in range(cfg['nq'])]
+        except:
+            bbxs = None  # for holidaysmanrot and copydays
+        
+        # extract database and query vectors
+        print('>> {}: database images...'.format(dataset))
+        vecs = extract_vectors(net, images, args.image_size, transform, ms=ms, msp=msp)
+        print('>> {}: query images...'.format(dataset))
+        qvecs = extract_vectors(net, qimages, args.image_size, transform, bbxs=bbxs, ms=ms, msp=msp)
+        
+        print('>> {}: Evaluating...'.format(dataset))
+
+        # convert to numpy
+        vecs = vecs.numpy()
+        qvecs = qvecs.numpy()
+
+        # search, rank, and print
+        scores = np.dot(vecs.T, qvecs)
+        ranks = np.argsort(-scores, axis=0)
+        compute_map_and_print(dataset, ranks, cfg['gnd'])
+    
+        if Lw is not None:
+            # whiten the vectors
+            vecs_lw  = whitenapply(vecs, Lw['m'], Lw['P'])
+            qvecs_lw = whitenapply(qvecs, Lw['m'], Lw['P'])
+
+            # search, rank, and print
+            scores = np.dot(vecs_lw.T, qvecs_lw)
+            ranks = np.argsort(-scores, axis=0)
+            compute_map_and_print(dataset + ' + whiten', ranks, cfg['gnd'])
+        
+        print('>> {}: elapsed time: {}'.format(dataset, htime(time.time()-start)))
+
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/cirtorch/examples/test_e2e.py b/cirtorch/examples/test_e2e.py
new file mode 100755
index 0000000..9c7b9d4
--- /dev/null
+++ b/cirtorch/examples/test_e2e.py
@@ -0,0 +1,145 @@
+import argparse
+import os
+import time
+import pickle
+import pdb
+
+import numpy as np
+
+import torch
+from torch.utils.model_zoo import load_url
+from torchvision import transforms
+
+from cirtorch.networks.imageretrievalnet import init_network, extract_vectors
+from cirtorch.datasets.testdataset import configdataset
+from cirtorch.utils.download import download_train, download_test
+from cirtorch.utils.evaluate import compute_map_and_print
+from cirtorch.utils.general import get_data_root, htime
+
+PRETRAINED = {
+    'rSfM120k-tl-resnet50-gem-w'        : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/retrieval-SfM-120k/rSfM120k-tl-resnet50-gem-w-97bf910.pth',
+    'rSfM120k-tl-resnet101-gem-w'       : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/retrieval-SfM-120k/rSfM120k-tl-resnet101-gem-w-a155e54.pth',
+    'rSfM120k-tl-resnet152-gem-w'       : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/retrieval-SfM-120k/rSfM120k-tl-resnet152-gem-w-f39cada.pth',
+    'gl18-tl-resnet50-gem-w'            : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/gl18/gl18-tl-resnet50-gem-w-83fdc30.pth',
+    'gl18-tl-resnet101-gem-w'           : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/gl18/gl18-tl-resnet101-gem-w-a4d43db.pth',
+    'gl18-tl-resnet152-gem-w'           : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/gl18/gl18-tl-resnet152-gem-w-21278d5.pth',
+}
+
+datasets_names = ['oxford5k', 'paris6k', 'roxford5k', 'rparis6k']
+
+parser = argparse.ArgumentParser(description='PyTorch CNN Image Retrieval Testing End-to-End')
+
+# test options
+parser.add_argument('--network', '-n', metavar='NETWORK',
+                    help="network to be evaluated: " +
+                        " | ".join(PRETRAINED.keys()))
+parser.add_argument('--datasets', '-d', metavar='DATASETS', default='roxford5k,rparis6k',
+                    help="comma separated list of test datasets: " + 
+                        " | ".join(datasets_names) + 
+                        " (default: 'roxford5k,rparis6k')")
+parser.add_argument('--image-size', '-imsize', default=1024, type=int, metavar='N',
+                    help="maximum size of longer image side used for testing (default: 1024)")
+parser.add_argument('--multiscale', '-ms', metavar='MULTISCALE', default='[1]', 
+                    help="use multiscale vectors for testing, " + 
+                    " examples: '[1]' | '[1, 1/2**(1/2), 1/2]' | '[1, 2**(1/2), 1/2**(1/2)]' (default: '[1]')")
+
+# GPU ID
+parser.add_argument('--gpu-id', '-g', default='0', metavar='N',
+                    help="gpu id used for testing (default: '0')")
+
+def main():
+    args = parser.parse_args()
+
+    # check if there are unknown datasets
+    for dataset in args.datasets.split(','):
+        if dataset not in datasets_names:
+            raise ValueError('Unsupported or unknown dataset: {}!'.format(dataset))
+
+    # check if test dataset are downloaded
+    # and download if they are not
+    download_train(get_data_root())
+    download_test(get_data_root())
+
+    # setting up the visible GPU
+    os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_id
+
+    # loading network
+    # pretrained networks (downloaded automatically)
+    print(">> Loading network:\n>>>> '{}'".format(args.network))
+    state = load_url(PRETRAINED[args.network], model_dir=os.path.join(get_data_root(), 'networks'))
+    # state = torch.load(args.network)
+    # parsing net params from meta
+    # architecture, pooling, mean, std required
+    # the rest has default values, in case that is doesnt exist
+    net_params = {}
+    net_params['architecture'] = state['meta']['architecture']
+    net_params['pooling'] = state['meta']['pooling']
+    net_params['local_whitening'] = state['meta'].get('local_whitening', False)
+    net_params['regional'] = state['meta'].get('regional', False)
+    net_params['whitening'] = state['meta'].get('whitening', False)
+    net_params['mean'] = state['meta']['mean']
+    net_params['std'] = state['meta']['std']
+    net_params['pretrained'] = False
+    # network initialization
+    net = init_network(net_params)
+    net.load_state_dict(state['state_dict'])
+        
+    print(">>>> loaded network: ")
+    print(net.meta_repr())
+
+    # setting up the multi-scale parameters
+    ms = list(eval(args.multiscale))
+    print(">>>> Evaluating scales: {}".format(ms))
+
+    # moving network to gpu and eval mode
+    net.cuda()
+    net.eval()
+
+    # set up the transform
+    normalize = transforms.Normalize(
+        mean=net.meta['mean'],
+        std=net.meta['std']
+    )
+    transform = transforms.Compose([
+        transforms.ToTensor(),
+        normalize
+    ])
+
+    # evaluate on test datasets
+    datasets = args.datasets.split(',')
+    for dataset in datasets: 
+        start = time.time()
+
+        print('>> {}: Extracting...'.format(dataset))
+
+        # prepare config structure for the test dataset
+        cfg = configdataset(dataset, os.path.join(get_data_root(), 'test'))
+        images = [cfg['im_fname'](cfg,i) for i in range(cfg['n'])]
+        qimages = [cfg['qim_fname'](cfg,i) for i in range(cfg['nq'])]
+        try:
+            bbxs = [tuple(cfg['gnd'][i]['bbx']) for i in range(cfg['nq'])]
+        except:
+            bbxs = None  # for holidaysmanrot and copydays
+        
+        # extract database and query vectors
+        print('>> {}: database images...'.format(dataset))
+        vecs = extract_vectors(net, images, args.image_size, transform, ms=ms)
+        print('>> {}: query images...'.format(dataset))
+        qvecs = extract_vectors(net, qimages, args.image_size, transform, bbxs=bbxs, ms=ms)
+        
+        print('>> {}: Evaluating...'.format(dataset))
+
+        # convert to numpy
+        vecs = vecs.numpy()
+        qvecs = qvecs.numpy()
+
+        # search, rank, and print
+        scores = np.dot(vecs.T, qvecs)
+        ranks = np.argsort(-scores, axis=0)
+        compute_map_and_print(dataset, ranks, cfg['gnd'])
+        
+        print('>> {}: elapsed time: {}'.format(dataset, htime(time.time()-start)))
+
+
+if __name__ == '__main__':
+    main()
diff --git a/cirtorch/examples/train.py b/cirtorch/examples/train.py
new file mode 100755
index 0000000..e3b816e
--- /dev/null
+++ b/cirtorch/examples/train.py
@@ -0,0 +1,580 @@
+import sys
+sys.path.append('/home/lc/project/Search_By_Image_Upgrade')
+import argparse
+import os
+import shutil
+import time
+import math
+import pickle
+import pdb
+
+import numpy as np
+
+import torch
+import torch.nn as nn
+import torch.optim
+import torch.utils.data
+
+import torchvision.transforms as transforms
+import torchvision.models as models
+
+from cirtorch.networks.imageretrievalnet import init_network, extract_vectors
+from cirtorch.layers.loss import ContrastiveLoss, TripletLoss
+from cirtorch.datasets.datahelpers import collate_tuples, cid2filename
+from cirtorch.datasets.traindataset import TuplesDataset
+from cirtorch.datasets.testdataset import configdataset
+from cirtorch.utils.download import download_train, download_test
+from cirtorch.utils.whiten import whitenlearn, whitenapply
+from cirtorch.utils.evaluate import compute_map_and_print
+from cirtorch.utils.general import get_data_root, htime
+
+training_dataset_names = ['retrieval-SfM-120k']
+test_datasets_names = ['oxford5k', 'paris6k', 'roxford5k', 'rparis6k']
+test_whiten_names = ['retrieval-SfM-30k', 'retrieval-SfM-120k']
+
+model_names = sorted(name for name in models.__dict__
+    if name.islower() and not name.startswith("__")
+    and callable(models.__dict__[name]))
+pool_names = ['mac', 'spoc', 'gem', 'gemmp']
+loss_names = ['contrastive', 'triplet']
+optimizer_names = ['sgd', 'adam']
+
+parser = argparse.ArgumentParser(description='PyTorch CNN Image Retrieval Training')
+
+# export directory, training and val datasets, test datasets
+parser.add_argument('directory', metavar='EXPORT_DIR',default='models',
+                    help='destination where trained network should be saved')
+parser.add_argument('--training-dataset', '-d', metavar='DATASET', default='retrieval-SfM-120k', choices=training_dataset_names,
+                    help='training dataset: ' + 
+                        ' | '.join(training_dataset_names) +
+                        ' (default: retrieval-SfM-120k)')
+parser.add_argument('--no-val', dest='val', action='store_false',default = False,
+                    help='do not run validation')
+parser.add_argument('--test-datasets', '-td', metavar='DATASETS', default='roxford5k,rparis6k',
+                    help='comma separated list of test datasets: ' + 
+                        ' | '.join(test_datasets_names) + 
+                        ' (default: roxford5k,rparis6k)')
+parser.add_argument('--test-whiten', metavar='DATASET', default='', choices=test_whiten_names,
+                    help='dataset used to learn whitening for testing: ' + 
+                        ' | '.join(test_whiten_names) + 
+                        ' (default: None)')
+parser.add_argument('--test-freq', default=1, type=int, metavar='N', 
+                    help='run test evaluation every N epochs (default: 1)')
+
+# network architecture and initialization options
+parser.add_argument('--arch', '-a', metavar='ARCH', default='resnet50', choices=model_names,
+                    help='model architecture: ' +
+                        ' | '.join(model_names) +
+                        ' (default: resnet101)')
+parser.add_argument('--pool', '-p', metavar='POOL', default='gem', choices=pool_names,
+                    help='pooling options: ' +
+                        ' | '.join(pool_names) +
+                        ' (default: gem)')
+parser.add_argument('--local-whitening', '-lw', dest='local_whitening', action='store_true',
+                    help='train model with learnable local whitening (linear layer) before the pooling')
+parser.add_argument('--regional', '-r', dest='regional', action='store_true',
+                    help='train model with regional pooling using fixed grid')
+parser.add_argument('--whitening', '-w', dest='whitening', action='store_true',
+                    help='train model with learnable whitening (linear layer) after the pooling')
+parser.add_argument('--not-pretrained', dest='pretrained', action='store_false',
+                    help='initialize model with random weights (default: pretrained on imagenet)')
+parser.add_argument('--loss', '-l', metavar='LOSS', default='contrastive',
+                    choices=loss_names,
+                    help='training loss options: ' +
+                        ' | '.join(loss_names) +
+                        ' (default: contrastive)')
+parser.add_argument('--loss-margin', '-lm', metavar='LM', default=0.7, type=float,
+                    help='loss margin: (default: 0.7)')
+
+# train/val options specific for image retrieval learning
+parser.add_argument('--image-size', default=648, type=int, metavar='N', # 1024
+                    help='maximum size of longer image side used for training (default: 1024)')
+parser.add_argument('--neg-num', '-nn', default=5, type=int, metavar='N',
+                    help='number of negative image per train/val tuple (default: 5)')
+parser.add_argument('--query-size', '-qs', default=2000, type=int, metavar='N',
+                    help='number of queries randomly drawn per one train epoch (default: 2000)')
+parser.add_argument('--pool-size', '-ps', default=20000, type=int, metavar='N',
+                    help='size of the pool for hard negative mining (default: 20000)')
+
+# standard train/val options
+parser.add_argument('--gpu-id', '-g', default='0,1', metavar='N',
+                    help='gpu id used for training (default: 0)')
+parser.add_argument('--workers', '-j', default=8, type=int, metavar='N',
+                    help='number of data loading workers (default: 8)')
+parser.add_argument('--epochs', default=100, type=int, metavar='N',
+                    help='number of total epochs to run (default: 100)')
+parser.add_argument('--batch-size', '-b', default=32, type=int, metavar='N', 
+                    help='number of (q,p,n1,...,nN) tuples in a mini-batch (default: 5)')
+parser.add_argument('--update-every', '-u', default=1, type=int, metavar='N',
+                    help='update model weights every N batches, used to handle really large batches, ' + 
+                        'batch_size effectively becomes update_every x batch_size (default: 1)')
+parser.add_argument('--optimizer', '-o', metavar='OPTIMIZER', default='adam',
+                    choices=optimizer_names,
+                    help='optimizer options: ' +
+                        ' | '.join(optimizer_names) +
+                        ' (default: adam)')
+parser.add_argument('--lr', '--learning-rate', default=1e-6, type=float,
+                    metavar='LR', help='initial learning rate (default: 1e-6)')
+parser.add_argument('--momentum', default=0.9, type=float, metavar='M',
+                    help='momentum')
+parser.add_argument('--weight-decay', '--wd', default=1e-6, type=float,
+                    metavar='W', help='weight decay (default: 1e-6)')
+parser.add_argument('--print-freq', default=10, type=int,
+                    metavar='N', help='print frequency (default: 10)')
+parser.add_argument('--resume', default='', type=str, metavar='FILENAME',
+                    help='name of the latest checkpoint (default: None)')
+
+min_loss = float('inf')
+
+def main():
+    global args, min_loss
+    args = parser.parse_args()
+
+    # manually check if there are unknown test datasets
+    for dataset in args.test_datasets.split(','):
+        if dataset not in test_datasets_names:
+            raise ValueError('Unsupported or unknown test dataset: {}!'.format(dataset))
+
+    # check if test dataset are downloaded
+    # and download if they are not
+    download_train(get_data_root())
+    download_test(get_data_root())
+
+    # create export dir if it doesnt exist
+    directory = "{}".format(args.training_dataset)
+    directory += "_{}".format(args.arch)
+    directory += "_{}".format(args.pool)
+    if args.local_whitening:
+        directory += "_lwhiten"
+    if args.regional:
+        directory += "_r"
+    if args.whitening:
+        directory += "_whiten"
+    if not args.pretrained:
+        directory += "_notpretrained"
+    directory += "_{}_m{:.2f}".format(args.loss, args.loss_margin)
+    directory += "_{}_lr{:.1e}_wd{:.1e}".format(args.optimizer, args.lr, args.weight_decay)
+    directory += "_nnum{}_qsize{}_psize{}".format(args.neg_num, args.query_size, args.pool_size)
+    directory += "_bsize{}_uevery{}_imsize{}".format(args.batch_size, args.update_every, args.image_size)
+
+    args.directory = os.path.join(args.directory, directory)
+    print(">> Creating directory if it does not exist:\n>> '{}'".format(args.directory))
+    if not os.path.exists(args.directory):
+        os.makedirs(args.directory)
+
+    # set cuda visible device
+    os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_id
+    
+    # set random seeds
+    # TODO: maybe pass as argument in future implementation?
+    torch.manual_seed(0)
+    torch.cuda.manual_seed_all(0)
+    np.random.seed(0)
+
+    # initialize model
+    if args.pretrained:
+        print(">> Using pre-trained model '{}'".format(args.arch))
+    else:
+        print(">> Using model from scratch (random weights) '{}'".format(args.arch))
+    model_params = {}
+    model_params['architecture'] = args.arch
+    model_params['pooling'] = args.pool
+    model_params['local_whitening'] = args.local_whitening
+    model_params['regional'] = args.regional
+    model_params['whitening'] = args.whitening
+    # model_params['mean'] = ...  # will use default
+    # model_params['std'] = ...  # will use default
+    model_params['pretrained'] = args.pretrained
+    model = init_network(model_params)
+
+    # move network to gpu
+    model.cuda()
+
+    # define loss function (criterion) and optimizer
+    if args.loss == 'contrastive':
+        criterion = ContrastiveLoss(margin=args.loss_margin).cuda()
+    elif args.loss == 'triplet':
+        criterion = TripletLoss(margin=args.loss_margin).cuda()
+    else:
+        raise(RuntimeError("Loss {} not available!".format(args.loss)))
+
+    # parameters split into features, pool, whitening 
+    # IMPORTANT: no weight decay for pooling parameter p in GeM or regional-GeM
+    parameters = []
+    # add feature parameters
+    parameters.append({'params': model.features.parameters()})
+    # add local whitening if exists
+    if model.lwhiten is not None:
+        parameters.append({'params': model.lwhiten.parameters()})
+    # add pooling parameters (or regional whitening which is part of the pooling layer!)
+    if not args.regional:
+        # global, only pooling parameter p weight decay should be 0
+        if args.pool == 'gem':
+            parameters.append({'params': model.pool.parameters(), 'lr': args.lr*10, 'weight_decay': 0})
+        elif args.pool == 'gemmp':
+            parameters.append({'params': model.pool.parameters(), 'lr': args.lr*100, 'weight_decay': 0})
+    else:
+        # regional, pooling parameter p weight decay should be 0, 
+        # and we want to add regional whitening if it is there
+        if args.pool == 'gem':
+            parameters.append({'params': model.pool.rpool.parameters(), 'lr': args.lr*10, 'weight_decay': 0})
+        elif args.pool == 'gemmp':
+            parameters.append({'params': model.pool.rpool.parameters(), 'lr': args.lr*100, 'weight_decay': 0})
+        if model.pool.whiten is not None:
+            parameters.append({'params': model.pool.whiten.parameters()})
+    # add final whitening if exists
+    if model.whiten is not None:
+        parameters.append({'params': model.whiten.parameters()})
+
+    # define optimizer
+    if args.optimizer == 'sgd':
+        optimizer = torch.optim.SGD(parameters, args.lr, momentum=args.momentum, weight_decay=args.weight_decay)
+    elif args.optimizer == 'adam':
+        optimizer = torch.optim.Adam(parameters, args.lr, weight_decay=args.weight_decay)
+
+    # define learning rate decay schedule
+    # TODO: maybe pass as argument in future implementation?
+    exp_decay = math.exp(-0.01)
+    scheduler = torch.optim.lr_scheduler.ExponentialLR(optimizer, gamma=exp_decay)
+
+    # optionally resume from a checkpoint
+    start_epoch = 0
+    if args.resume:
+        args.resume = os.path.join(args.directory, args.resume)
+        if os.path.isfile(args.resume):
+            # load checkpoint weights and update model and optimizer
+            print(">> Loading checkpoint:\n>> '{}'".format(args.resume))
+            checkpoint = torch.load(args.resume)
+            start_epoch = checkpoint['epoch']
+            min_loss = checkpoint['min_loss']
+            model.load_state_dict(checkpoint['state_dict'])
+            optimizer.load_state_dict(checkpoint['optimizer'])
+            print(">>>> loaded checkpoint:\n>>>> '{}' (epoch {})"
+                  .format(args.resume, checkpoint['epoch']))
+            # important not to forget scheduler updating
+            scheduler = torch.optim.lr_scheduler.ExponentialLR(optimizer, gamma=exp_decay, last_epoch=checkpoint['epoch']-1)
+        else:
+            print(">> No checkpoint found at '{}'".format(args.resume))
+
+    # Data loading code
+    normalize = transforms.Normalize(mean=model.meta['mean'], std=model.meta['std'])
+    transform = transforms.Compose([
+        transforms.ToTensor(),
+        normalize,
+    ])
+    train_dataset = TuplesDataset(
+        name=args.training_dataset,
+        mode='train',
+        imsize=args.image_size,
+        nnum=args.neg_num,
+        qsize=args.query_size,
+        poolsize=args.pool_size,
+        transform=transform
+    )
+    train_loader = torch.utils.data.DataLoader(
+        train_dataset, batch_size=args.batch_size, shuffle=True,
+        num_workers=args.workers, pin_memory=True, sampler=None,
+        drop_last=True, collate_fn=collate_tuples
+    )
+    if args.val:
+        val_dataset = TuplesDataset(
+            name=args.training_dataset,
+            mode='val',
+            imsize=args.image_size,
+            nnum=args.neg_num,
+            qsize=float('Inf'),
+            poolsize=float('Inf'),
+            transform=transform
+        )
+        val_loader = torch.utils.data.DataLoader(
+            val_dataset, batch_size=args.batch_size, shuffle=False,
+            num_workers=args.workers, pin_memory=True,
+            drop_last=True, collate_fn=collate_tuples
+        )
+
+    # evaluate the network before starting
+    # this might not be necessary?
+    #test(args.test_datasets, model)
+
+    for epoch in range(start_epoch, args.epochs):
+
+        # set manual seeds per epoch
+        np.random.seed(epoch)
+        torch.manual_seed(epoch)
+        torch.cuda.manual_seed_all(epoch)
+
+        # adjust learning rate for each epoch
+        scheduler.step()
+        # # debug printing to check if everything ok
+        # lr_feat = optimizer.param_groups[0]['lr']
+        # lr_pool = optimizer.param_groups[1]['lr']
+        # print('>> Features lr: {:.2e}; Pooling lr: {:.2e}'.format(lr_feat, lr_pool))
+
+        # train for one epoch on train set
+        loss = train(train_loader, model, criterion, optimizer, epoch)
+
+        # evaluate on validation set
+        if args.val:
+            with torch.no_grad():
+                loss = validate(val_loader, model, criterion, epoch)
+
+        # evaluate on test datasets every test_freq epochs
+        #if (epoch + 1) % args.test_freq == 0:
+        #    with torch.no_grad():
+        #        test(args.test_datasets, model)
+
+        # remember best loss and save checkpoint
+        is_best = loss < min_loss
+        min_loss = min(loss, min_loss)
+        if (epoch+1)%10 == 0:
+           save_checkpoint({
+               'epoch': epoch + 1,
+               'meta': model.meta,
+               'state_dict': model.state_dict(),
+               'min_loss': min_loss,
+               'optimizer' : optimizer.state_dict(),
+           }, is_best, args.directory)
+
+def train(train_loader, model, criterion, optimizer, epoch):
+    batch_time = AverageMeter()
+    data_time = AverageMeter()
+    losses = AverageMeter()
+
+    # create tuples for training
+    avg_neg_distance = train_loader.dataset.create_epoch_tuples(model)
+
+    # switch to train mode
+    model.train()
+    model.apply(set_batchnorm_eval)
+
+    # zero out gradients
+    optimizer.zero_grad()
+
+    end = time.time()
+    for i, (input, target) in enumerate(train_loader):
+        # measure data loading time
+        data_time.update(time.time() - end)
+
+
+        nq = len(input) # number of training tuples
+        ni = len(input[0]) # number of images per tuple
+
+        for q in range(nq):
+            output = torch.zeros(model.meta['outputdim'], ni).cuda()
+            for imi in range(ni):
+
+                # compute output vector for image imi
+                output[:, imi] = model(input[q][imi].cuda()).squeeze()
+
+            # reducing memory consumption:
+            # compute loss for this query tuple only
+            # then, do backward pass for one tuple only
+            # each backward pass gradients will be accumulated
+            # the optimization step is performed for the full batch later
+            loss = criterion(output, target[q].cuda())
+            losses.update(loss.item())
+            loss.backward()
+
+        if (i + 1) % args.update_every == 0:
+            # do one step for multiple batches
+            # accumulated gradients are used
+            optimizer.step()
+            # zero out gradients so we can 
+            # accumulate new ones over batches
+            optimizer.zero_grad()
+            # print('>> Train: [{0}][{1}/{2}]\t'
+            #       'Weight update performed'.format(
+            #        epoch+1, i+1, len(train_loader)))
+
+        # measure elapsed time
+        batch_time.update(time.time() - end)
+        end = time.time()
+
+        if (i+1) % args.print_freq == 0 or i == 0 or (i+1) == len(train_loader):
+            print('>> Train: [{0}][{1}/{2}]\t'
+                  'Time {batch_time.val:.3f} ({batch_time.avg:.3f})\t'
+                  'Data {data_time.val:.3f} ({data_time.avg:.3f})\t'
+                  'Loss {loss.val:.4f} ({loss.avg:.4f})'.format(
+                   epoch+1, i+1, len(train_loader), batch_time=batch_time,
+                   data_time=data_time, loss=losses))
+
+    return losses.avg
+
+
+def validate(val_loader, model, criterion, epoch):
+    batch_time = AverageMeter()
+    losses = AverageMeter()
+
+    # create tuples for validation
+    avg_neg_distance = val_loader.dataset.create_epoch_tuples(model)
+
+    # switch to evaluate mode
+    model.eval()
+
+    end = time.time()
+    for i, (input, target) in enumerate(val_loader):
+
+        nq = len(input) # number of training tuples
+        ni = len(input[0]) # number of images per tuple
+        output = torch.zeros(model.meta['outputdim'], nq*ni).cuda()
+
+        for q in range(nq):
+            for imi in range(ni):
+
+                # compute output vector for image imi of query q
+                output[:, q*ni + imi] = model(input[q][imi].cuda()).squeeze()
+
+        # no need to reduce memory consumption (no backward pass):
+        # compute loss for the full batch
+        loss = criterion(output, torch.cat(target).cuda())
+
+        # record loss
+        losses.update(loss.item()/nq, nq)
+
+        # measure elapsed time
+        batch_time.update(time.time() - end)
+        end = time.time()
+
+        if (i+1) % args.print_freq == 0 or i == 0 or (i+1) == len(val_loader):
+            print('>> Val: [{0}][{1}/{2}]\t'
+                  'Time {batch_time.val:.3f} ({batch_time.avg:.3f})\t'
+                  'Loss {loss.val:.4f} ({loss.avg:.4f})'.format(
+                   epoch+1, i+1, len(val_loader), batch_time=batch_time, loss=losses))
+
+    return losses.avg
+
+def test(datasets, net):
+
+    print('>> Evaluating network on test datasets...')
+
+    # for testing we use image size of max 1024
+    image_size = 1024
+
+    # moving network to gpu and eval mode
+    net.cuda()
+    net.eval()
+    # set up the transform
+    normalize = transforms.Normalize(
+        mean=net.meta['mean'],
+        std=net.meta['std']
+    )
+    transform = transforms.Compose([
+        transforms.ToTensor(),
+        normalize
+    ])
+
+    # compute whitening
+    if args.test_whiten:
+        start = time.time()
+
+        print('>> {}: Learning whitening...'.format(args.test_whiten))
+
+        # loading db
+        db_root = os.path.join(get_data_root(), 'train', args.test_whiten)
+        ims_root = os.path.join(db_root, 'ims')
+        db_fn = os.path.join(db_root, '{}-whiten.pkl'.format(args.test_whiten))
+        with open(db_fn, 'rb') as f:
+            db = pickle.load(f)
+        images = [cid2filename(db['cids'][i], ims_root) for i in range(len(db['cids']))]
+
+        # extract whitening vectors
+        print('>> {}: Extracting...'.format(args.test_whiten))
+        wvecs = extract_vectors(net, images, image_size, transform)  # implemented with torch.no_grad
+        
+        # learning whitening 
+        print('>> {}: Learning...'.format(args.test_whiten))
+        wvecs = wvecs.numpy()
+        m, P = whitenlearn(wvecs, db['qidxs'], db['pidxs'])
+        Lw = {'m': m, 'P': P}
+
+        print('>> {}: elapsed time: {}'.format(args.test_whiten, htime(time.time()-start)))
+    else:
+        Lw = None
+
+    # evaluate on test datasets
+    datasets = args.test_datasets.split(',')
+    for dataset in datasets: 
+        start = time.time()
+
+        print('>> {}: Extracting...'.format(dataset))
+
+        # prepare config structure for the test dataset
+        cfg = configdataset(dataset, os.path.join(get_data_root(), 'test'))
+        images = [cfg['im_fname'](cfg,i) for i in range(cfg['n'])]
+        qimages = [cfg['qim_fname'](cfg,i) for i in range(cfg['nq'])]
+        bbxs = [tuple(cfg['gnd'][i]['bbx']) for i in range(cfg['nq'])]
+        
+        # extract database and query vectors
+        print('>> {}: database images...'.format(dataset))
+        vecs = extract_vectors(net, images, image_size, transform)  # implemented with torch.no_grad
+        print('>> {}: query images...'.format(dataset))
+        qvecs = extract_vectors(net, qimages, image_size, transform, bbxs)  # implemented with torch.no_grad
+        
+        print('>> {}: Evaluating...'.format(dataset))
+
+        # convert to numpy
+        vecs = vecs.numpy()
+        qvecs = qvecs.numpy()
+
+        # search, rank, and print
+        scores = np.dot(vecs.T, qvecs)
+        ranks = np.argsort(-scores, axis=0)
+        compute_map_and_print(dataset, ranks, cfg['gnd'])
+    
+        if Lw is not None:
+            # whiten the vectors
+            vecs_lw  = whitenapply(vecs, Lw['m'], Lw['P'])
+            qvecs_lw = whitenapply(qvecs, Lw['m'], Lw['P'])
+
+            # search, rank, and print
+            scores = np.dot(vecs_lw.T, qvecs_lw)
+            ranks = np.argsort(-scores, axis=0)
+            compute_map_and_print(dataset + ' + whiten', ranks, cfg['gnd'])
+        
+        print('>> {}: elapsed time: {}'.format(dataset, htime(time.time()-start)))
+
+
+def save_checkpoint(state, is_best, directory):
+    filename = os.path.join(directory, 'model_epoch%d.pth.tar' % state['epoch'])
+    torch.save(state, filename)
+    if is_best:
+        filename_best = os.path.join(directory, 'model_best.pth.tar')
+        shutil.copyfile(filename, filename_best)
+
+
+class AverageMeter(object):
+    """Computes and stores the average and current value"""
+    def __init__(self):
+        self.reset()
+
+    def reset(self):
+        self.val = 0
+        self.avg = 0
+        self.sum = 0
+        self.count = 0
+
+    def update(self, val, n=1):
+        self.val = val
+        self.sum += val * n
+        self.count += n
+        self.avg = self.sum / self.count
+
+
+def set_batchnorm_eval(m):
+    classname = m.__class__.__name__
+    if classname.find('BatchNorm') != -1:
+        # freeze running mean and std:
+        # we do training one image at a time
+        # so the statistics would not be per batch
+        # hence we choose freezing (ie using imagenet statistics)
+        m.eval()
+        # # freeze parameters:
+        # # in fact no need to freeze scale and bias
+        # # they can be learned
+        # # that is why next two lines are commented
+        # for p in m.parameters():
+            # p.requires_grad = False
+
+
+if __name__ == '__main__':
+    main()
diff --git a/cirtorch/layers/__init__.py b/cirtorch/layers/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/cirtorch/layers/functional.py b/cirtorch/layers/functional.py
new file mode 100755
index 0000000..0e78d24
--- /dev/null
+++ b/cirtorch/layers/functional.py
@@ -0,0 +1,172 @@
+import math
+import pdb
+
+import torch
+import torch.nn.functional as F
+
+# --------------------------------------
+# pooling
+# --------------------------------------
+
+def mac(x):
+    return F.max_pool2d(x, (x.size(-2), x.size(-1)))
+    # return F.adaptive_max_pool2d(x, (1,1)) # alternative
+
+
+def spoc(x):
+    return F.avg_pool2d(x, (x.size(-2), x.size(-1)))
+    # return F.adaptive_avg_pool2d(x, (1,1)) # alternative
+
+
+def gem(x, p=3, eps=1e-6):
+    return F.avg_pool2d(x.clamp(min=eps).pow(p), (x.size(-2), x.size(-1))).pow(1./p)
+    # return F.lp_pool2d(F.threshold(x, eps, eps), p, (x.size(-2), x.size(-1))) # alternative
+
+
+def rmac(x, L=3, eps=1e-6):
+    ovr = 0.4 # desired overlap of neighboring regions
+    steps = torch.Tensor([2, 3, 4, 5, 6, 7]) # possible regions for the long dimension
+
+    W = x.size(3)
+    H = x.size(2)
+
+    w = min(W, H)
+    w2 = math.floor(w/2.0 - 1)
+
+    b = (max(H, W)-w)/(steps-1)
+    (tmp, idx) = torch.min(torch.abs(((w**2 - w*b)/w**2)-ovr), 0) # steps(idx) regions for long dimension
+
+    # region overplus per dimension
+    Wd = 0;
+    Hd = 0;
+    if H < W:  
+        Wd = idx.item() + 1
+    elif H > W:
+        Hd = idx.item() + 1
+
+    v = F.max_pool2d(x, (x.size(-2), x.size(-1)))
+    v = v / (torch.norm(v, p=2, dim=1, keepdim=True) + eps).expand_as(v)
+
+    for l in range(1, L+1):
+        wl = math.floor(2*w/(l+1))
+        wl2 = math.floor(wl/2 - 1)
+
+        if l+Wd == 1:
+            b = 0
+        else:
+            b = (W-wl)/(l+Wd-1)
+        cenW = torch.floor(wl2 + torch.Tensor(range(l-1+Wd+1))*b) - wl2 # center coordinates
+        if l+Hd == 1:
+            b = 0
+        else:
+            b = (H-wl)/(l+Hd-1)
+        cenH = torch.floor(wl2 + torch.Tensor(range(l-1+Hd+1))*b) - wl2 # center coordinates
+            
+        for i_ in cenH.tolist():
+            for j_ in cenW.tolist():
+                if wl == 0:
+                    continue
+                R = x[:,:,(int(i_)+torch.Tensor(range(wl)).long()).tolist(),:]
+                R = R[:,:,:,(int(j_)+torch.Tensor(range(wl)).long()).tolist()]
+                vt = F.max_pool2d(R, (R.size(-2), R.size(-1)))
+                vt = vt / (torch.norm(vt, p=2, dim=1, keepdim=True) + eps).expand_as(vt)
+                v += vt
+
+    return v
+
+
+def roipool(x, rpool, L=3, eps=1e-6):
+    ovr = 0.4 # desired overlap of neighboring regions
+    steps = torch.Tensor([2, 3, 4, 5, 6, 7]) # possible regions for the long dimension
+
+    W = x.size(3)
+    H = x.size(2)
+
+    w = min(W, H)
+    w2 = math.floor(w/2.0 - 1)
+
+    b = (max(H, W)-w)/(steps-1)
+    _, idx = torch.min(torch.abs(((w**2 - w*b)/w**2)-ovr), 0) # steps(idx) regions for long dimension
+
+    # region overplus per dimension
+    Wd = 0;
+    Hd = 0;
+    if H < W:  
+        Wd = idx.item() + 1
+    elif H > W:
+        Hd = idx.item() + 1
+
+    vecs = []
+    vecs.append(rpool(x).unsqueeze(1))
+
+    for l in range(1, L+1):
+        wl = math.floor(2*w/(l+1))
+        wl2 = math.floor(wl/2 - 1)
+
+        if l+Wd == 1:
+            b = 0
+        else:
+            b = (W-wl)/(l+Wd-1)
+        cenW = torch.floor(wl2 + torch.Tensor(range(l-1+Wd+1))*b).int() - wl2 # center coordinates
+        if l+Hd == 1:
+            b = 0
+        else:
+            b = (H-wl)/(l+Hd-1)
+        cenH = torch.floor(wl2 + torch.Tensor(range(l-1+Hd+1))*b).int() - wl2 # center coordinates
+            
+        for i_ in cenH.tolist():
+            for j_ in cenW.tolist():
+                if wl == 0:
+                    continue
+                vecs.append(rpool(x.narrow(2,i_,wl).narrow(3,j_,wl)).unsqueeze(1))
+
+    return torch.cat(vecs, dim=1)
+
+
+# --------------------------------------
+# normalization
+# --------------------------------------
+
+def l2n(x, eps=1e-6):
+    return x / (torch.norm(x, p=2, dim=1, keepdim=True) + eps).expand_as(x)
+
+def powerlaw(x, eps=1e-6):
+    x = x + self.eps
+    return x.abs().sqrt().mul(x.sign())
+
+# --------------------------------------
+# loss
+# --------------------------------------
+
+def contrastive_loss(x, label, margin=0.7, eps=1e-6):
+    # x is D x N
+    dim = x.size(0) # D
+    nq = torch.sum(label.data==-1) # number of tuples
+    S = x.size(1) // nq # number of images per tuple including query: 1+1+n
+
+    x1 = x[:, ::S].permute(1,0).repeat(1,S-1).view((S-1)*nq,dim).permute(1,0)
+    idx = [i for i in range(len(label)) if label.data[i] != -1]
+    x2 = x[:, idx]
+    lbl = label[label!=-1]
+
+    dif = x1 - x2
+    D = torch.pow(dif+eps, 2).sum(dim=0).sqrt()
+
+    y = 0.5*lbl*torch.pow(D,2) + 0.5*(1-lbl)*torch.pow(torch.clamp(margin-D, min=0),2)
+    y = torch.sum(y)
+    return y
+
+def triplet_loss(x, label, margin=0.1):
+    # x is D x N
+    dim = x.size(0) # D
+    nq = torch.sum(label.data==-1).item() # number of tuples
+    S = x.size(1) // nq # number of images per tuple including query: 1+1+n
+
+    xa = x[:, label.data==-1].permute(1,0).repeat(1,S-2).view((S-2)*nq,dim).permute(1,0)
+    xp = x[:, label.data==1].permute(1,0).repeat(1,S-2).view((S-2)*nq,dim).permute(1,0)
+    xn = x[:, label.data==0]
+
+    dist_pos = torch.sum(torch.pow(xa - xp, 2), dim=0)
+    dist_neg = torch.sum(torch.pow(xa - xn, 2), dim=0)
+
+    return torch.sum(torch.clamp(dist_pos - dist_neg + margin, min=0))
diff --git a/cirtorch/layers/loss.py b/cirtorch/layers/loss.py
new file mode 100755
index 0000000..271e95f
--- /dev/null
+++ b/cirtorch/layers/loss.py
@@ -0,0 +1,48 @@
+import torch
+import torch.nn as nn
+
+import cirtorch.layers.functional as LF
+
+# --------------------------------------
+# Loss/Error layers
+# --------------------------------------
+
+class ContrastiveLoss(nn.Module):
+    r"""CONTRASTIVELOSS layer that computes contrastive loss for a batch of images:
+        Q query tuples, each packed in the form of (q,p,n1,..nN)
+
+    Args:
+        x: tuples arranges in columns as [q,p,n1,nN, ... ]
+        label: -1 for query, 1 for corresponding positive, 0 for corresponding negative
+        margin: contrastive loss margin. Default: 0.7
+
+    >>> contrastive_loss = ContrastiveLoss(margin=0.7)
+    >>> input = torch.randn(128, 35, requires_grad=True)
+    >>> label = torch.Tensor([-1, 1, 0, 0, 0, 0, 0] * 5)
+    >>> output = contrastive_loss(input, label)
+    >>> output.backward()
+    """
+
+    def __init__(self, margin=0.7, eps=1e-6):
+        super(ContrastiveLoss, self).__init__()
+        self.margin = margin
+        self.eps = eps
+
+    def forward(self, x, label):
+        return LF.contrastive_loss(x, label, margin=self.margin, eps=self.eps)
+
+    def __repr__(self):
+        return self.__class__.__name__ + '(' + 'margin=' + '{:.4f}'.format(self.margin) + ')'
+
+
+class TripletLoss(nn.Module):
+
+    def __init__(self, margin=0.1):
+        super(TripletLoss, self).__init__()
+        self.margin = margin
+
+    def forward(self, x, label):
+        return LF.triplet_loss(x, label, margin=self.margin)
+
+    def __repr__(self):
+        return self.__class__.__name__ + '(' + 'margin=' + '{:.4f}'.format(self.margin) + ')'
diff --git a/cirtorch/layers/normalization.py b/cirtorch/layers/normalization.py
new file mode 100755
index 0000000..da8e977
--- /dev/null
+++ b/cirtorch/layers/normalization.py
@@ -0,0 +1,33 @@
+import torch
+import torch.nn as nn
+
+import cirtorch.layers.functional as LF
+
+# --------------------------------------
+# Normalization layers
+# --------------------------------------
+
+class L2N(nn.Module):
+
+    def __init__(self, eps=1e-6):
+        super(L2N,self).__init__()
+        self.eps = eps
+
+    def forward(self, x):
+        return LF.l2n(x, eps=self.eps)
+        
+    def __repr__(self):
+        return self.__class__.__name__ + '(' + 'eps=' + str(self.eps) + ')'
+
+
+class PowerLaw(nn.Module):
+
+    def __init__(self, eps=1e-6):
+        super(PowerLaw, self).__init__()
+        self.eps = eps
+
+    def forward(self, x):
+        return LF.powerlaw(x, eps=self.eps)
+        
+    def __repr__(self):
+        return self.__class__.__name__ + '(' + 'eps=' + str(self.eps) + ')'
\ No newline at end of file
diff --git a/cirtorch/layers/pooling.py b/cirtorch/layers/pooling.py
new file mode 100755
index 0000000..4b3be6a
--- /dev/null
+++ b/cirtorch/layers/pooling.py
@@ -0,0 +1,113 @@
+import torch
+import torch.nn as nn
+from torch.nn.parameter import Parameter
+
+import cirtorch.layers.functional as LF
+from cirtorch.layers.normalization import L2N
+
+# --------------------------------------
+# Pooling layers
+# --------------------------------------
+
+class MAC(nn.Module):
+
+    def __init__(self):
+        super(MAC,self).__init__()
+
+    def forward(self, x):
+        return LF.mac(x)
+        
+    def __repr__(self):
+        return self.__class__.__name__ + '()'
+
+
+class SPoC(nn.Module):
+
+    def __init__(self):
+        super(SPoC,self).__init__()
+
+    def forward(self, x):
+        return LF.spoc(x)
+        
+    def __repr__(self):
+        return self.__class__.__name__ + '()'
+
+
+class GeM(nn.Module):
+
+    def __init__(self, p=3, eps=1e-6):
+        super(GeM,self).__init__()
+        self.p = Parameter(torch.ones(1)*p)
+        self.eps = eps
+
+    def forward(self, x):
+        return LF.gem(x, p=self.p, eps=self.eps)
+        
+    def __repr__(self):
+        return self.__class__.__name__ + '(' + 'p=' + '{:.4f}'.format(self.p.data.tolist()[0]) + ', ' + 'eps=' + str(self.eps) + ')'
+
+class GeMmp(nn.Module):
+
+    def __init__(self, p=3, mp=1, eps=1e-6):
+        super(GeMmp,self).__init__()
+        self.p = Parameter(torch.ones(mp)*p)
+        self.mp = mp
+        self.eps = eps
+
+    def forward(self, x):
+        return LF.gem(x, p=self.p.unsqueeze(-1).unsqueeze(-1), eps=self.eps)
+        
+    def __repr__(self):
+        return self.__class__.__name__ + '(' + 'p=' + '[{}]'.format(self.mp) + ', ' + 'eps=' + str(self.eps) + ')'
+
+class RMAC(nn.Module):
+
+    def __init__(self, L=3, eps=1e-6):
+        super(RMAC,self).__init__()
+        self.L = L
+        self.eps = eps
+
+    def forward(self, x):
+        return LF.rmac(x, L=self.L, eps=self.eps)
+        
+    def __repr__(self):
+        return self.__class__.__name__ + '(' + 'L=' + '{}'.format(self.L) + ')'
+
+
+class Rpool(nn.Module):
+
+    def __init__(self, rpool, whiten=None, L=3, eps=1e-6):
+        super(Rpool,self).__init__()
+        self.rpool = rpool
+        self.L = L
+        self.whiten = whiten
+        self.norm = L2N()
+        self.eps = eps
+
+    def forward(self, x, aggregate=True):
+        # features -> roipool
+        o = LF.roipool(x, self.rpool, self.L, self.eps) # size: #im, #reg, D, 1, 1
+
+        # concatenate regions from all images in the batch
+        s = o.size()
+        o = o.view(s[0]*s[1], s[2], s[3], s[4]) # size: #im x #reg, D, 1, 1
+
+        # rvecs -> norm
+        o = self.norm(o)
+
+        # rvecs -> whiten -> norm
+        if self.whiten is not None:
+            o = self.norm(self.whiten(o.squeeze(-1).squeeze(-1)))
+
+        # reshape back to regions per image
+        o = o.view(s[0], s[1], s[2], s[3], s[4]) # size: #im, #reg, D, 1, 1
+
+        # aggregate regions into a single global vector per image
+        if aggregate:
+            # rvecs -> sumpool -> norm
+            o = self.norm(o.sum(1, keepdim=False)) # size: #im, D, 1, 1
+
+        return o
+
+    def __repr__(self):
+        return super(Rpool, self).__repr__() + '(' + 'L=' + '{}'.format(self.L) + ')'
\ No newline at end of file
diff --git a/cirtorch/networks/__init__.py b/cirtorch/networks/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/cirtorch/networks/imageretrievalnet.py b/cirtorch/networks/imageretrievalnet.py
new file mode 100755
index 0000000..ea30d75
--- /dev/null
+++ b/cirtorch/networks/imageretrievalnet.py
@@ -0,0 +1,427 @@
+import os
+import pdb
+import numpy as np
+
+import torch
+import torch.nn as nn
+import torch.utils.model_zoo as model_zoo
+
+import torchvision
+
+from cirtorch.layers.pooling import MAC, SPoC, GeM, GeMmp, RMAC, Rpool
+from cirtorch.layers.normalization import L2N, PowerLaw
+from cirtorch.datasets.genericdataset import ImagesFromList
+from cirtorch.utils.general import get_data_root
+from cirtorch.datasets.datahelpers import default_loader, imresize
+from PIL import Image
+#from ModelHelper.Common.CommonUtils.ImageAugmentation import Padding
+import cv2
+
+# for some models, we have imported features (convolutions) from caffe because the image retrieval performance is higher for them
+FEATURES = {
+    'vgg16': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/imagenet/imagenet-caffe-vgg16-features-d369c8e.pth',
+    'resnet50': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/imagenet/imagenet-caffe-resnet50-features-ac468af.pth',
+    'resnet101': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/imagenet/imagenet-caffe-resnet101-features-10a101d.pth',
+    'resnet152': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/imagenet/imagenet-caffe-resnet152-features-1011020.pth',
+}
+
+# TODO: pre-compute for more architectures and properly test variations (pre l2norm, post l2norm)
+# pre-computed local pca whitening that can be applied before the pooling layer
+L_WHITENING = {
+    'resnet101': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-lwhiten-9f830ef.pth',
+    # no pre l2 norm
+    # 'resnet101' : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-lwhiten-da5c935.pth', # with pre l2 norm
+}
+
+# possible global pooling layers, each on of these can be made regional
+POOLING = {
+    'mac': MAC,
+    'spoc': SPoC,
+    'gem': GeM,
+    'gemmp': GeMmp,
+    'rmac': RMAC,
+}
+
+# TODO: pre-compute for: resnet50-gem-r, resnet50-mac-r, vgg16-mac-r, alexnet-mac-r
+# pre-computed regional whitening, for most commonly used architectures and pooling methods
+R_WHITENING = {
+    'alexnet-gem-r': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-alexnet-gem-r-rwhiten-c8cf7e2.pth',
+    'vgg16-gem-r': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-vgg16-gem-r-rwhiten-19b204e.pth',
+    'resnet101-mac-r': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-mac-r-rwhiten-7f1ed8c.pth',
+    'resnet101-gem-r': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-gem-r-rwhiten-adace84.pth',
+}
+
+# TODO: pre-compute for more architectures
+# pre-computed final (global) whitening, for most commonly used architectures and pooling methods
+WHITENING = {
+    'alexnet-gem': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-alexnet-gem-whiten-454ad53.pth',
+    'alexnet-gem-r': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-alexnet-gem-r-whiten-4c9126b.pth',
+    'vgg16-gem': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-vgg16-gem-whiten-eaa6695.pth',
+    'vgg16-gem-r': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-vgg16-gem-r-whiten-83582df.pth',
+    'resnet50-gem': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet50-gem-whiten-f15da7b.pth',
+    'resnet101-mac-r': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-mac-r-whiten-9df41d3.pth',
+    'resnet101-gem': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-gem-whiten-22ab0c1.pth',
+    'resnet101-gem-r': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-gem-r-whiten-b379c0a.pth',
+    'resnet101-gemmp': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-gemmp-whiten-770f53c.pth',
+    'resnet152-gem': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet152-gem-whiten-abe7b93.pth',
+    'densenet121-gem': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-densenet121-gem-whiten-79e3eea.pth',
+    'densenet169-gem': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-densenet169-gem-whiten-6b2a76a.pth',
+    'densenet201-gem': 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-densenet201-gem-whiten-22ea45c.pth',
+}
+
+# output dimensionality for supported architectures
+OUTPUT_DIM = {
+    'alexnet': 256,
+    'vgg11': 512,
+    'vgg13': 512,
+    'vgg16': 512,
+    'vgg19': 512,
+    'resnet18': 512,
+    'resnet34': 512,
+    'resnet50': 2048,
+    'resnet101': 2048,
+    'resnet152': 2048,
+    'densenet121': 1024,
+    'densenet169': 1664,
+    'densenet201': 1920,
+    'densenet161': 2208,  # largest densenet
+    'squeezenet1_0': 512,
+    'squeezenet1_1': 512,
+}
+
+
+class ImageRetrievalNet(nn.Module):
+
+    def __init__(self, features, lwhiten, pool, whiten, meta):
+        super(ImageRetrievalNet, self).__init__()
+        self.features = nn.Sequential(*features)
+        self.lwhiten = lwhiten
+        self.pool = pool
+        self.whiten = whiten
+        self.norm = L2N()
+        self.meta = meta
+
+    def forward(self, x):
+        # x -> features
+        o = self.features(x)
+
+        # TODO: properly test (with pre-l2norm and/or post-l2norm)
+        # if lwhiten exist: features -> local whiten
+        if self.lwhiten is not None:
+            # o = self.norm(o)
+            s = o.size()
+            o = o.permute(0, 2, 3, 1).contiguous().view(-1, s[1])
+            o = self.lwhiten(o)
+            o = o.view(s[0], s[2], s[3], self.lwhiten.out_features).permute(0, 3, 1, 2)
+            # o = self.norm(o)
+
+        # features -> pool -> norm
+        o = self.norm(self.pool(o)).squeeze(-1).squeeze(-1)
+
+        # if whiten exist: pooled features -> whiten -> norm
+        if self.whiten is not None:
+            o = self.norm(self.whiten(o))
+
+        # permute so that it is Dx1 column vector per image (DxN if many images)
+        return o.permute(1, 0)
+
+    def __repr__(self):
+        tmpstr = super(ImageRetrievalNet, self).__repr__()[:-1]
+        tmpstr += self.meta_repr()
+        tmpstr = tmpstr + ')'
+        return tmpstr
+
+    def meta_repr(self):
+        tmpstr = '  (' + 'meta' + '): dict( \n'  # + self.meta.__repr__() + '\n'
+        tmpstr += '     architecture: {}\n'.format(self.meta['architecture'])
+        tmpstr += '     local_whitening: {}\n'.format(self.meta['local_whitening'])
+        tmpstr += '     pooling: {}\n'.format(self.meta['pooling'])
+        tmpstr += '     regional: {}\n'.format(self.meta['regional'])
+        tmpstr += '     whitening: {}\n'.format(self.meta['whitening'])
+        tmpstr += '     outputdim: {}\n'.format(self.meta['outputdim'])
+        tmpstr += '     mean: {}\n'.format(self.meta['mean'])
+        tmpstr += '     std: {}\n'.format(self.meta['std'])
+        tmpstr = tmpstr + '  )\n'
+        return tmpstr
+
+
+def init_network(params):
+    # parse params with default values
+    architecture = params.get('architecture', 'resnet101')
+    local_whitening = params.get('local_whitening', False)
+    pooling = params.get('pooling', 'gem')
+    regional = params.get('regional', False)
+    whitening = params.get('whitening', False)
+    mean = params.get('mean', [0.485, 0.456, 0.406])
+    std = params.get('std', [0.229, 0.224, 0.225])
+    pretrained = params.get('pretrained', True)
+
+    # get output dimensionality size
+    dim = OUTPUT_DIM[architecture]
+
+    # loading network from torchvision
+    if pretrained:
+        if architecture not in FEATURES:
+            # initialize with network pretrained on imagenet in pytorch
+            net_in = getattr(torchvision.models, architecture)(pretrained=True)
+        else:
+            # initialize with random weights, later on we will fill features with custom pretrained network
+            net_in = getattr(torchvision.models, architecture)(pretrained=False)
+    else:
+        # initialize with random weights
+        net_in = getattr(torchvision.models, architecture)(pretrained=False)
+
+    # initialize features
+    # take only convolutions for features,
+    # always ends with ReLU to make last activations non-negative
+    if architecture.startswith('alexnet'):
+        features = list(net_in.features.children())[:-1]
+    elif architecture.startswith('vgg'):
+        features = list(net_in.features.children())[:-1]
+    elif architecture.startswith('resnet'):
+        features = list(net_in.children())[:-2]
+    elif architecture.startswith('densenet'):
+        features = list(net_in.features.children())
+        features.append(nn.ReLU(inplace=True))
+    elif architecture.startswith('squeezenet'):
+        features = list(net_in.features.children())
+    else:
+        raise ValueError('Unsupported or unknown architecture: {}!'.format(architecture))
+
+    # initialize local whitening
+    if local_whitening:
+        lwhiten = nn.Linear(dim, dim, bias=True)
+        # TODO: lwhiten with possible dimensionality reduce
+
+        if pretrained:
+            lw = architecture
+            if lw in L_WHITENING:
+                print(">> {}: for '{}' custom computed local whitening '{}' is used"
+                      .format(os.path.basename(__file__), lw, os.path.basename(L_WHITENING[lw])))
+                whiten_dir = os.path.join(get_data_root(), 'whiten')
+                lwhiten.load_state_dict(model_zoo.load_url(L_WHITENING[lw], model_dir=whiten_dir))
+            else:
+                print(">> {}: for '{}' there is no local whitening computed, random weights are used"
+                      .format(os.path.basename(__file__), lw))
+
+    else:
+        lwhiten = None
+
+    # initialize pooling
+    if pooling == 'gemmp':
+        pool = POOLING[pooling](mp=dim)
+    else:
+        pool = POOLING[pooling]()
+
+    # initialize regional pooling
+    if regional:
+        rpool = pool
+        rwhiten = nn.Linear(dim, dim, bias=True)
+        # TODO: rwhiten with possible dimensionality reduce
+
+        if pretrained:
+            rw = '{}-{}-r'.format(architecture, pooling)
+            if rw in R_WHITENING:
+                print(">> {}: for '{}' custom computed regional whitening '{}' is used"
+                      .format(os.path.basename(__file__), rw, os.path.basename(R_WHITENING[rw])))
+                whiten_dir = os.path.join(get_data_root(), 'whiten')
+                rwhiten.load_state_dict(model_zoo.load_url(R_WHITENING[rw], model_dir=whiten_dir))
+            else:
+                print(">> {}: for '{}' there is no regional whitening computed, random weights are used"
+                      .format(os.path.basename(__file__), rw))
+
+        pool = Rpool(rpool, rwhiten)
+
+    # initialize whitening
+    if whitening:
+        whiten = nn.Linear(dim, dim, bias=True)
+        # TODO: whiten with possible dimensionality reduce
+
+        if pretrained:
+            w = architecture
+            if local_whitening:
+                w += '-lw'
+            w += '-' + pooling
+            if regional:
+                w += '-r'
+            if w in WHITENING:
+                print(">> {}: for '{}' custom computed whitening '{}' is used"
+                      .format(os.path.basename(__file__), w, os.path.basename(WHITENING[w])))
+                whiten_dir = os.path.join(get_data_root(), 'whiten')
+                whiten.load_state_dict(model_zoo.load_url(WHITENING[w], model_dir=whiten_dir))
+            else:
+                print(">> {}: for '{}' there is no whitening computed, random weights are used"
+                      .format(os.path.basename(__file__), w))
+    else:
+        whiten = None
+
+    # create meta information to be stored in the network
+    meta = {
+        'architecture': architecture,
+        'local_whitening': local_whitening,
+        'pooling': pooling,
+        'regional': regional,
+        'whitening': whitening,
+        'mean': mean,
+        'std': std,
+        'outputdim': dim,
+    }
+
+    # create a generic image retrieval network
+    net = ImageRetrievalNet(features, lwhiten, pool, whiten, meta)
+
+    # initialize features with custom pretrained network if needed
+    if pretrained and architecture in FEATURES:
+        print(">> {}: for '{}' custom pretrained features '{}' are used"
+              .format(os.path.basename(__file__), architecture, os.path.basename(FEATURES[architecture])))
+        model_dir = os.path.join(get_data_root(), 'networks')
+        net.features.load_state_dict(model_zoo.load_url(FEATURES[architecture], model_dir=model_dir))
+
+    return net
+
+def extract_vectors(net, images, image_size, transform, bbxs=None, ms=[1], msp=1, print_freq=10):
+    # moving network to gpu and eval mode
+    if torch.cuda.is_available():
+        net.cuda()
+    net.eval()
+
+    # creating dataset loader
+    loader = torch.utils.data.DataLoader(
+        ImagesFromList(root='', images=images, imsize=image_size, bbxs=bbxs, transform=transform),
+        batch_size=1, shuffle=False, num_workers=1, pin_memory=True
+    )
+
+    # extracting vectors
+    with torch.no_grad():
+        vecs = torch.zeros(net.meta['outputdim'], len(images))
+        img_paths = list()
+        for i, (input, path) in enumerate(loader):
+            #print(i)
+            if torch.cuda.is_available():
+                input = input.cuda()
+
+            if len(ms) == 1 and ms[0] == 1:
+                vecs[:, i] = extract_ss(net, input)
+            else:
+                vecs[:, i] = extract_ms(net, input, ms, msp)
+            img_paths.append(path)
+
+            if (i + 1) % print_freq == 0 or (i + 1) == len(images):
+                print('\r>>>> {}/{} done...'.format((i + 1), len(images)), end='')
+    imgs = list()
+    for one in img_paths:
+        imgs += one
+    return vecs, imgs
+
+def extract_vectors_o(net, image, size, tranform, bbxs = None, ms=[1], msp = 1, print_freq=10):
+    if torch.cuda.is_available():
+        net.cuda()
+    net.eval()
+    #image = cv2.resize(image, (size, size))
+    if type(image) == np.ndarray:
+        image = Image.fromarray(cv2.cvtColor(image, cv2.COLOR_BGR2RGB))
+    image = imresize(image, size)
+    image = tranform(image)
+    image = image.unsqueeze(0)
+    #print('image>>>>>>>', image)
+    #print('image>>>>>>>', image.shape)
+    with torch.no_grad():
+        #vecs = torch.zeros(net.meta['outputdim'], len(image))
+        if torch.cuda.is_available():
+            image = image.cuda()
+        if len(ms) == 1 and ms[0] == 1:
+            vecs = extract_ss(net, image)
+        else:
+            vecs = extract_ms(net, image, ms, msp)
+        return vecs
+
+def extract_ss(net, input):
+    #return net(input).cpu().data.squeeze()
+    return net(input).cuda().data.squeeze()
+
+
+def extract_ms(net, input, ms, msp):
+    v = torch.zeros(net.meta['outputdim'])
+
+    for s in ms:
+        if s == 1:
+            input_t = input.clone()
+        else:
+            input_t = nn.functional.interpolate(input, scale_factor=s, mode='bilinear', align_corners=False)
+        v += net(input_t).pow(msp).cpu().data.squeeze()
+
+    v /= len(ms)
+    v = v.pow(1. / msp)
+    v /= v.norm()
+
+    return v
+
+
+def extract_regional_vectors(net, images, image_size, transform, bbxs=None, ms=[1], msp=1, print_freq=10):
+    # moving network to gpu and eval mode
+    net.cuda()
+    net.eval()
+
+    # creating dataset loader
+    loader = torch.utils.data.DataLoader(
+        ImagesFromList(root='', images=images, imsize=image_size, bbxs=bbxs, transform=transform),
+        batch_size=1, shuffle=False, num_workers=8, pin_memory=True
+    )
+
+    # extracting vectors
+    with torch.no_grad():
+        vecs = []
+        for i, input in enumerate(loader):
+            input = input.cuda()
+
+            if len(ms) == 1:
+                vecs.append(extract_ssr(net, input))
+            else:
+                # TODO: not implemented yet
+                # vecs.append(extract_msr(net, input, ms, msp))
+                raise NotImplementedError
+
+            if (i + 1) % print_freq == 0 or (i + 1) == len(images):
+                print('\r>>>> {}/{} done...'.format((i + 1), len(images)), end='')
+        print('')
+
+    return vecs
+
+
+def extract_ssr(net, input):
+    return net.pool(net.features(input), aggregate=False).squeeze(0).squeeze(-1).squeeze(-1).permute(1, 0).cpu().data
+
+
+def extract_local_vectors(net, images, image_size, transform, bbxs=None, ms=[1], msp=1, print_freq=10):
+    # moving network to gpu and eval mode
+    net.cuda()
+    net.eval()
+
+    # creating dataset loader
+    loader = torch.utils.data.DataLoader(
+        ImagesFromList(root='', images=images, imsize=image_size, bbxs=bbxs, transform=transform),
+        batch_size=1, shuffle=False, num_workers=8, pin_memory=True
+    )
+
+    # extracting vectors
+    with torch.no_grad():
+        vecs = []
+        for i, input in enumerate(loader):
+            input = input.cuda()
+
+            if len(ms) == 1:
+                vecs.append(extract_ssl(net, input))
+            else:
+                # TODO: not implemented yet
+                # vecs.append(extract_msl(net, input, ms, msp))
+                raise NotImplementedError
+
+            if (i + 1) % print_freq == 0 or (i + 1) == len(images):
+                print('\r>>>> {}/{} done...'.format((i + 1), len(images)), end='')
+        print('')
+
+    return vecs
+
+
+def extract_ssl(net, input):
+    return net.norm(net.features(input)).squeeze(0).view(net.meta['outputdim'], -1).cpu().data
diff --git a/cirtorch/networks/imageretrievalnet_cpu.py b/cirtorch/networks/imageretrievalnet_cpu.py
new file mode 100644
index 0000000..4185b7e
--- /dev/null
+++ b/cirtorch/networks/imageretrievalnet_cpu.py
@@ -0,0 +1,392 @@
+import os
+import pdb
+
+import torch
+import torch.nn as nn
+import torch.utils.model_zoo as model_zoo
+
+import torchvision
+
+from cirtorch.layers.pooling import MAC, SPoC, GeM, GeMmp, RMAC, Rpool
+from cirtorch.layers.normalization import L2N, PowerLaw
+from cirtorch.datasets.genericdataset import ImagesFromList
+from cirtorch.utils.general import get_data_root
+
+# for some models, we have imported features (convolutions) from caffe because the image retrieval performance is higher for them
+FEATURES = {
+    'vgg16'         : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/imagenet/imagenet-caffe-vgg16-features-d369c8e.pth',
+    'resnet50'      : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/imagenet/imagenet-caffe-resnet50-features-ac468af.pth',
+    'resnet101'     : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/imagenet/imagenet-caffe-resnet101-features-10a101d.pth',
+    'resnet152'     : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/networks/imagenet/imagenet-caffe-resnet152-features-1011020.pth',
+}
+
+# TODO: pre-compute for more architectures and properly test variations (pre l2norm, post l2norm)
+# pre-computed local pca whitening that can be applied before the pooling layer
+L_WHITENING = {
+    'resnet101' : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-lwhiten-9f830ef.pth', # no pre l2 norm
+    # 'resnet101' : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-lwhiten-da5c935.pth', # with pre l2 norm
+}
+
+# possible global pooling layers, each on of these can be made regional
+POOLING = {
+    'mac'   : MAC,
+    'spoc'  : SPoC,
+    'gem'   : GeM,
+    'gemmp' : GeMmp,
+    'rmac'  : RMAC,
+}
+
+# TODO: pre-compute for: resnet50-gem-r, resnet50-mac-r, vgg16-mac-r, alexnet-mac-r
+# pre-computed regional whitening, for most commonly used architectures and pooling methods
+R_WHITENING = {
+    'alexnet-gem-r'   : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-alexnet-gem-r-rwhiten-c8cf7e2.pth',
+    'vgg16-gem-r'     : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-vgg16-gem-r-rwhiten-19b204e.pth',
+    'resnet101-mac-r' : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-mac-r-rwhiten-7f1ed8c.pth',
+    'resnet101-gem-r' : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-gem-r-rwhiten-adace84.pth',
+}
+
+# TODO: pre-compute for more architectures
+# pre-computed final (global) whitening, for most commonly used architectures and pooling methods
+WHITENING = {
+    'alexnet-gem'            : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-alexnet-gem-whiten-454ad53.pth',
+    'alexnet-gem-r'          : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-alexnet-gem-r-whiten-4c9126b.pth',
+    'vgg16-gem'              : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-vgg16-gem-whiten-eaa6695.pth',
+    'vgg16-gem-r'            : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-vgg16-gem-r-whiten-83582df.pth',
+    'resnet50-gem'           : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet50-gem-whiten-f15da7b.pth',
+    'resnet101-mac-r'        : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-mac-r-whiten-9df41d3.pth',
+    'resnet101-gem'          : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-gem-whiten-22ab0c1.pth',
+    'resnet101-gem-r'        : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-gem-r-whiten-b379c0a.pth',
+    'resnet101-gemmp'        : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet101-gemmp-whiten-770f53c.pth',
+    'resnet152-gem'          : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-resnet152-gem-whiten-abe7b93.pth',
+    'densenet121-gem'        : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-densenet121-gem-whiten-79e3eea.pth',
+    'densenet169-gem'        : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-densenet169-gem-whiten-6b2a76a.pth',
+    'densenet201-gem'        : 'http://cmp.felk.cvut.cz/cnnimageretrieval/data/whiten/retrieval-SfM-120k/retrieval-SfM-120k-densenet201-gem-whiten-22ea45c.pth',
+}
+
+# output dimensionality for supported architectures
+OUTPUT_DIM = {
+    'alexnet'               :  256,
+    'vgg11'                 :  512,
+    'vgg13'                 :  512,
+    'vgg16'                 :  512,
+    'vgg19'                 :  512,
+    'resnet18'              :  512,
+    'resnet34'              :  512,
+    'resnet50'              : 2048,
+    'resnet101'             : 2048,
+    'resnet152'             : 2048,
+    'densenet121'           : 1024,
+    'densenet169'           : 1664,
+    'densenet201'           : 1920,
+    'densenet161'           : 2208, # largest densenet
+    'squeezenet1_0'         :  512,
+    'squeezenet1_1'         :  512,
+}
+
+
+class ImageRetrievalNet(nn.Module):
+    
+    def __init__(self, features, lwhiten, pool, whiten, meta):
+        super(ImageRetrievalNet, self).__init__()
+        self.features = nn.Sequential(*features)
+        self.lwhiten = lwhiten
+        self.pool = pool
+        self.whiten = whiten
+        self.norm = L2N()
+        self.meta = meta
+    
+    def forward(self, x):
+        # x -> features
+        o = self.features(x)
+
+        # TODO: properly test (with pre-l2norm and/or post-l2norm)
+        # if lwhiten exist: features -> local whiten
+        if self.lwhiten is not None:
+            # o = self.norm(o)
+            s = o.size()
+            o = o.permute(0,2,3,1).contiguous().view(-1, s[1])
+            o = self.lwhiten(o)
+            o = o.view(s[0],s[2],s[3],self.lwhiten.out_features).permute(0,3,1,2)
+            # o = self.norm(o)
+
+        # features -> pool -> norm
+        o = self.norm(self.pool(o)).squeeze(-1).squeeze(-1)
+
+        # if whiten exist: pooled features -> whiten -> norm
+        if self.whiten is not None:
+            o = self.norm(self.whiten(o))
+
+        # permute so that it is Dx1 column vector per image (DxN if many images)
+        return o.permute(1,0)
+
+    def __repr__(self):
+        tmpstr = super(ImageRetrievalNet, self).__repr__()[:-1]
+        tmpstr += self.meta_repr()
+        tmpstr = tmpstr + ')'
+        return tmpstr
+
+    def meta_repr(self):
+        tmpstr = '  (' + 'meta' + '): dict( \n' # + self.meta.__repr__() + '\n'
+        tmpstr += '     architecture: {}\n'.format(self.meta['architecture'])
+        tmpstr += '     local_whitening: {}\n'.format(self.meta['local_whitening'])
+        tmpstr += '     pooling: {}\n'.format(self.meta['pooling'])
+        tmpstr += '     regional: {}\n'.format(self.meta['regional'])
+        tmpstr += '     whitening: {}\n'.format(self.meta['whitening'])
+        tmpstr += '     outputdim: {}\n'.format(self.meta['outputdim'])
+        tmpstr += '     mean: {}\n'.format(self.meta['mean'])
+        tmpstr += '     std: {}\n'.format(self.meta['std'])
+        tmpstr = tmpstr + '  )\n'
+        return tmpstr
+
+
+def init_network(params):
+
+    # parse params with default values
+    architecture = params.get('architecture', 'resnet101')
+    local_whitening = params.get('local_whitening', False)
+    pooling = params.get('pooling', 'gem')
+    regional = params.get('regional', False)
+    whitening = params.get('whitening', False)
+    mean = params.get('mean', [0.485, 0.456, 0.406])
+    std = params.get('std', [0.229, 0.224, 0.225])
+    pretrained = params.get('pretrained', True)
+
+    # get output dimensionality size
+    dim = OUTPUT_DIM[architecture]
+
+    # loading network from torchvision
+    if pretrained:
+        if architecture not in FEATURES:
+            # initialize with network pretrained on imagenet in pytorch
+            net_in = getattr(torchvision.models, architecture)(pretrained=True)
+        else:
+            # initialize with random weights, later on we will fill features with custom pretrained network
+            net_in = getattr(torchvision.models, architecture)(pretrained=False)
+    else:
+        # initialize with random weights
+        net_in = getattr(torchvision.models, architecture)(pretrained=False)
+
+    # initialize features
+    # take only convolutions for features,
+    # always ends with ReLU to make last activations non-negative
+    if architecture.startswith('alexnet'):
+        features = list(net_in.features.children())[:-1]
+    elif architecture.startswith('vgg'):
+        features = list(net_in.features.children())[:-1]
+    elif architecture.startswith('resnet'):
+        features = list(net_in.children())[:-2]
+    elif architecture.startswith('densenet'):
+        features = list(net_in.features.children())
+        features.append(nn.ReLU(inplace=True))
+    elif architecture.startswith('squeezenet'):
+        features = list(net_in.features.children())
+    else:
+        raise ValueError('Unsupported or unknown architecture: {}!'.format(architecture))
+
+    # initialize local whitening
+    if local_whitening:
+        lwhiten = nn.Linear(dim, dim, bias=True)
+        # TODO: lwhiten with possible dimensionality reduce
+
+        if pretrained:
+            lw = architecture
+            if lw in L_WHITENING:
+                print(">> {}: for '{}' custom computed local whitening '{}' is used"
+                    .format(os.path.basename(__file__), lw, os.path.basename(L_WHITENING[lw])))
+                whiten_dir = os.path.join(get_data_root(), 'whiten')
+                lwhiten.load_state_dict(model_zoo.load_url(L_WHITENING[lw], model_dir=whiten_dir))
+            else:
+                print(">> {}: for '{}' there is no local whitening computed, random weights are used"
+                    .format(os.path.basename(__file__), lw))
+
+    else:
+        lwhiten = None
+    
+    # initialize pooling
+    if pooling == 'gemmp':
+        pool = POOLING[pooling](mp=dim)
+    else:
+        pool = POOLING[pooling]()
+    
+    # initialize regional pooling
+    if regional:
+        rpool = pool
+        rwhiten = nn.Linear(dim, dim, bias=True)
+        # TODO: rwhiten with possible dimensionality reduce
+
+        if pretrained:
+            rw = '{}-{}-r'.format(architecture, pooling)
+            if rw in R_WHITENING:
+                print(">> {}: for '{}' custom computed regional whitening '{}' is used"
+                    .format(os.path.basename(__file__), rw, os.path.basename(R_WHITENING[rw])))
+                whiten_dir = os.path.join(get_data_root(), 'whiten')
+                rwhiten.load_state_dict(model_zoo.load_url(R_WHITENING[rw], model_dir=whiten_dir))
+            else:
+                print(">> {}: for '{}' there is no regional whitening computed, random weights are used"
+                    .format(os.path.basename(__file__), rw))
+
+        pool = Rpool(rpool, rwhiten)
+
+    # initialize whitening
+    if whitening:
+        whiten = nn.Linear(dim, dim, bias=True)
+        # TODO: whiten with possible dimensionality reduce
+
+        if pretrained:
+            w = architecture
+            if local_whitening:
+                w += '-lw'
+            w += '-' + pooling
+            if regional:
+                w += '-r'
+            if w in WHITENING:
+                print(">> {}: for '{}' custom computed whitening '{}' is used"
+                    .format(os.path.basename(__file__), w, os.path.basename(WHITENING[w])))
+                whiten_dir = os.path.join(get_data_root(), 'whiten')
+                whiten.load_state_dict(model_zoo.load_url(WHITENING[w], model_dir=whiten_dir))
+            else:
+                print(">> {}: for '{}' there is no whitening computed, random weights are used"
+                    .format(os.path.basename(__file__), w))
+    else:
+        whiten = None
+
+    # create meta information to be stored in the network
+    meta = {
+        'architecture' : architecture, 
+        'local_whitening' : local_whitening, 
+        'pooling' : pooling, 
+        'regional' : regional, 
+        'whitening' : whitening, 
+        'mean' : mean, 
+        'std' : std,
+        'outputdim' : dim,
+    }
+
+    # create a generic image retrieval network
+    net = ImageRetrievalNet(features, lwhiten, pool, whiten, meta)
+
+    # initialize features with custom pretrained network if needed
+    if pretrained and architecture in FEATURES:
+        print(">> {}: for '{}' custom pretrained features '{}' are used"
+            .format(os.path.basename(__file__), architecture, os.path.basename(FEATURES[architecture])))
+        model_dir = os.path.join(get_data_root(), 'networks')
+        net.features.load_state_dict(model_zoo.load_url(FEATURES[architecture], model_dir=model_dir))
+
+    return net
+
+
+def extract_vectors(net, images, image_size, transform, bbxs=None, ms=[1], msp=1, print_freq=10):
+    # moving network to gpu and eval mode
+    net.cuda()
+    net.eval()
+
+    # creating dataset loader
+    loader = torch.utils.data.DataLoader(
+        ImagesFromList(root='', images=images, imsize=image_size, bbxs=bbxs, transform=transform),
+        batch_size=1, shuffle=False, num_workers=8, pin_memory=True
+    )
+
+    # extracting vectors
+    with torch.no_grad():
+        vecs = torch.zeros(net.meta['outputdim'], len(images))
+        for i, input in enumerate(loader):
+            input = input.cuda()
+
+            if len(ms) == 1 and ms[0] == 1:
+                vecs[:, i] = extract_ss(net, input)
+            else:
+                vecs[:, i] = extract_ms(net, input, ms, msp)
+
+            if (i+1) % print_freq == 0 or (i+1) == len(images):
+                print('\r>>>> {}/{} done...'.format((i+1), len(images)), end='')
+        print('')
+
+    return vecs
+
+def extract_ss(net, input):
+    return net(input).cpu().data.squeeze()
+
+def extract_ms(net, input, ms, msp):
+    
+    v = torch.zeros(net.meta['outputdim'])
+    
+    for s in ms: 
+        if s == 1:
+            input_t = input.clone()
+        else:    
+            input_t = nn.functional.interpolate(input, scale_factor=s, mode='bilinear', align_corners=False)
+        v += net(input_t).pow(msp).cpu().data.squeeze()
+        
+    v /= len(ms)
+    v = v.pow(1./msp)
+    v /= v.norm()
+
+    return v
+
+
+def extract_regional_vectors(net, images, image_size, transform, bbxs=None, ms=[1], msp=1, print_freq=10):
+    # moving network to gpu and eval mode
+    net.cuda()
+    net.eval()
+
+    # creating dataset loader
+    loader = torch.utils.data.DataLoader(
+        ImagesFromList(root='', images=images, imsize=image_size, bbxs=bbxs, transform=transform),
+        batch_size=1, shuffle=False, num_workers=8, pin_memory=True
+    )
+
+    # extracting vectors
+    with torch.no_grad():
+        vecs = []
+        for i, input in enumerate(loader):
+            input = input.cuda()
+
+            if len(ms) == 1:
+                vecs.append(extract_ssr(net, input))
+            else:
+                # TODO: not implemented yet
+                # vecs.append(extract_msr(net, input, ms, msp))
+                raise NotImplementedError
+
+            if (i+1) % print_freq == 0 or (i+1) == len(images):
+                print('\r>>>> {}/{} done...'.format((i+1), len(images)), end='')
+        print('')
+
+    return vecs
+
+def extract_ssr(net, input):
+    return net.pool(net.features(input), aggregate=False).squeeze(0).squeeze(-1).squeeze(-1).permute(1,0).cpu().data
+
+
+def extract_local_vectors(net, images, image_size, transform, bbxs=None, ms=[1], msp=1, print_freq=10):
+    # moving network to gpu and eval mode
+    net.cuda()
+    net.eval()
+
+    # creating dataset loader
+    loader = torch.utils.data.DataLoader(
+        ImagesFromList(root='', images=images, imsize=image_size, bbxs=bbxs, transform=transform),
+        batch_size=1, shuffle=False, num_workers=8, pin_memory=True
+    )
+
+    # extracting vectors
+    with torch.no_grad():
+        vecs = []
+        for i, input in enumerate(loader):
+            input = input.cuda()
+
+            if len(ms) == 1:
+                vecs.append(extract_ssl(net, input))
+            else:
+                # TODO: not implemented yet
+                # vecs.append(extract_msl(net, input, ms, msp))
+                raise NotImplementedError
+
+            if (i+1) % print_freq == 0 or (i+1) == len(images):
+                print('\r>>>> {}/{} done...'.format((i+1), len(images)), end='')
+        print('')
+
+    return vecs
+
+def extract_ssl(net, input):
+    return net.norm(net.features(input)).squeeze(0).view(net.meta['outputdim'], -1).cpu().data
diff --git a/cirtorch/utils/__init__.py b/cirtorch/utils/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/cirtorch/utils/download.py b/cirtorch/utils/download.py
new file mode 100755
index 0000000..b52d93f
--- /dev/null
+++ b/cirtorch/utils/download.py
@@ -0,0 +1,154 @@
+import os
+
+def download_test(data_dir):
+    """
+    DOWNLOAD_TEST Checks, and, if required, downloads the necessary datasets for the testing.
+      
+        download_test(DATA_ROOT) checks if the data necessary for running the example script exist.
+        If not it downloads it in the folder structure:
+            DATA_ROOT/test/oxford5k/  : folder with Oxford images and ground truth file
+            DATA_ROOT/test/paris6k/   : folder with Paris images and ground truth file
+            DATA_ROOT/test/roxford5k/ : folder with Oxford images and revisited ground truth file
+            DATA_ROOT/test/rparis6k/  : folder with Paris images and revisited ground truth file
+    """
+
+    # Create data folder if it does not exist
+    if not os.path.isdir(data_dir):
+        os.mkdir(data_dir)
+    
+    # Create datasets folder if it does not exist
+    datasets_dir = os.path.join(data_dir, 'test')
+    print('***************', os.path.exists(datasets_dir))
+    #print(not os.path.isdir(datasets_dir))
+    if not os.path.exists(datasets_dir):
+        os.mkdir(datasets_dir)
+
+    # Download datasets folders test/DATASETNAME/
+    datasets = ['oxford5k', 'paris6k', 'roxford5k', 'rparis6k']
+    for di in range(len(datasets)):
+        dataset = datasets[di]
+
+        if dataset == 'oxford5k':
+            src_dir = 'http://www.robots.ox.ac.uk/~vgg/data/oxbuildings'
+            dl_files = ['oxbuild_images.tgz']
+        elif dataset == 'paris6k':
+            src_dir = 'http://www.robots.ox.ac.uk/~vgg/data/parisbuildings'
+            dl_files = ['paris_1.tgz', 'paris_2.tgz']
+        elif dataset == 'roxford5k':
+            src_dir = 'http://www.robots.ox.ac.uk/~vgg/data/oxbuildings'
+            dl_files = ['oxbuild_images.tgz']
+        elif dataset == 'rparis6k':
+            src_dir = 'http://www.robots.ox.ac.uk/~vgg/data/parisbuildings'
+            dl_files = ['paris_1.tgz', 'paris_2.tgz']
+        else:
+            raise ValueError('Unknown dataset: {}!'.format(dataset))
+
+        dst_dir = os.path.join(datasets_dir, dataset, 'jpg')
+        print('%%%%%%%%%%%%%%%%',dst_dir, dataset)
+        if  not os.path.exists(dst_dir):
+            # for oxford and paris download images
+            if dataset == 'oxford5k' or dataset == 'paris6k':
+                print('>> Dataset {} directory does not exist. Creating: {}'.format(dataset, dst_dir))
+                os.makedirs(dst_dir)
+                for dli in range(len(dl_files)):
+                    dl_file = dl_files[dli]
+                    src_file = os.path.join(src_dir, dl_file)
+                    dst_file = os.path.join(dst_dir, dl_file)
+                    print('>> Downloading dataset {} archive {}...'.format(dataset, dl_file))
+                    os.system('wget {} -O {}'.format(src_file, dst_file))
+                    print('>> Extracting dataset {} archive {}...'.format(dataset, dl_file))
+                    # create tmp folder
+                    dst_dir_tmp = os.path.join(dst_dir, 'tmp')
+                    os.system('mkdir {}'.format(dst_dir_tmp))
+                    # extract in tmp folder
+                    os.system('tar -zxf {} -C {}'.format(dst_file, dst_dir_tmp))
+                    # remove all (possible) subfolders by moving only files in dst_dir
+                    os.system('find {} -type f -exec mv -i {{}} {} \\;'.format(dst_dir_tmp, dst_dir))
+                    # remove tmp folder
+                    os.system('rm -rf {}'.format(dst_dir_tmp))
+                    print('>> Extracted, deleting dataset {} archive {}...'.format(dataset, dl_file))
+                    os.system('rm {}'.format(dst_file))
+
+            # for roxford and rparis just make sym links
+            elif dataset == 'roxford5k' or dataset == 'rparis6k':
+                print('>> Dataset {} directory does not exist. Creating: {}'.format(dataset, dst_dir))
+                dataset_old = dataset[1:]
+                dst_dir_old = os.path.join(datasets_dir, dataset_old, 'jpg')
+                os.mkdir(os.path.join(datasets_dir, dataset))
+                os.system('ln -s {} {}'.format(dst_dir_old, dst_dir))
+                print('>> Created symbolic link from {} jpg to {} jpg'.format(dataset_old, dataset))
+
+
+        gnd_src_dir = os.path.join('http://cmp.felk.cvut.cz/cnnimageretrieval/data', 'test', dataset)
+        gnd_dst_dir = os.path.join(datasets_dir, dataset)
+        gnd_dl_file = 'gnd_{}.pkl'.format(dataset)
+        gnd_src_file = os.path.join(gnd_src_dir, gnd_dl_file)
+        gnd_dst_file = os.path.join(gnd_dst_dir, gnd_dl_file)
+        if not os.path.exists(gnd_dst_file):
+            print('>> Downloading dataset {} ground truth file...'.format(dataset))
+            os.system('wget {} -O {}'.format(gnd_src_file, gnd_dst_file))
+
+
+def download_train(data_dir):
+    """
+    DOWNLOAD_TRAIN Checks, and, if required, downloads the necessary datasets for the training.
+      
+        download_train(DATA_ROOT) checks if the data necessary for running the example script exist.
+        If not it downloads it in the folder structure:
+            DATA_ROOT/train/retrieval-SfM-120k/  : folder with rsfm120k images and db files
+            DATA_ROOT/train/retrieval-SfM-30k/   : folder with rsfm30k images and db files
+    """
+
+    # Create data folder if it does not exist
+    if not os.path.isdir(data_dir):
+        os.mkdir(data_dir)
+    
+    # Create datasets folder if it does not exist
+    datasets_dir = os.path.join(data_dir, 'train')
+    if not os.path.isdir(datasets_dir):
+        os.mkdir(datasets_dir)
+
+    # Download folder train/retrieval-SfM-120k/
+    src_dir = os.path.join('http://cmp.felk.cvut.cz/cnnimageretrieval/data', 'train', 'ims')
+    dst_dir = os.path.join(datasets_dir, 'retrieval-SfM-120k', 'ims')
+    dl_file = 'ims.tar.gz'
+    if not os.path.isdir(dst_dir):
+        src_file = os.path.join(src_dir, dl_file)
+        dst_file = os.path.join(dst_dir, dl_file)
+        print('>> Image directory does not exist. Creating: {}'.format(dst_dir))
+        os.makedirs(dst_dir)
+        print('>> Downloading ims.tar.gz...')
+        os.system('wget {} -O {}'.format(src_file, dst_file))
+        print('>> Extracting {}...'.format(dst_file))
+        os.system('tar -zxf {} -C {}'.format(dst_file, dst_dir))
+        print('>> Extracted, deleting {}...'.format(dst_file))
+        os.system('rm {}'.format(dst_file))
+
+    # Create symlink for train/retrieval-SfM-30k/ 
+    dst_dir_old = os.path.join(datasets_dir, 'retrieval-SfM-120k', 'ims')
+    dst_dir = os.path.join(datasets_dir, 'retrieval-SfM-30k', 'ims')
+    if not  os.path.exists(dst_dir):
+        os.makedirs(os.path.join(datasets_dir, 'retrieval-SfM-30k'))
+        os.system('ln -s {} {}'.format(dst_dir_old, dst_dir))
+        print('>> Created symbolic link from retrieval-SfM-120k/ims to retrieval-SfM-30k/ims')
+
+    # Download db files
+    src_dir = os.path.join('http://cmp.felk.cvut.cz/cnnimageretrieval/data', 'train', 'dbs')
+    datasets = ['retrieval-SfM-120k', 'retrieval-SfM-30k']
+    for dataset in datasets:
+        dst_dir = os.path.join(datasets_dir, dataset)
+        if dataset == 'retrieval-SfM-120k':
+            dl_files = ['{}.pkl'.format(dataset), '{}-whiten.pkl'.format(dataset)]
+        elif dataset == 'retrieval-SfM-30k':
+            dl_files = ['{}-whiten.pkl'.format(dataset)]
+
+        if not os.path.isdir(dst_dir):
+            print('>> Dataset directory does not exist. Creating: {}'.format(dst_dir))
+            os.mkdir(dst_dir)
+
+        for i in range(len(dl_files)):
+            src_file = os.path.join(src_dir, dl_files[i])
+            dst_file = os.path.join(dst_dir, dl_files[i])
+            if not os.path.isfile(dst_file):
+                print('>> DB file {} does not exist. Downloading...'.format(dl_files[i]))
+                os.system('wget {} -O {}'.format(src_file, dst_file))
diff --git a/cirtorch/utils/download_win.py b/cirtorch/utils/download_win.py
new file mode 100755
index 0000000..1e8c344
--- /dev/null
+++ b/cirtorch/utils/download_win.py
@@ -0,0 +1,152 @@
+import os
+
+def download_test(data_dir):
+    """
+    DOWNLOAD_TEST Checks, and, if required, downloads the necessary datasets for the testing.
+      
+        download_test(DATA_ROOT) checks if the data necessary for running the example script exist.
+        If not it downloads it in the folder structure:
+            DATA_ROOT/test/oxford5k/  : folder with Oxford images and ground truth file
+            DATA_ROOT/test/paris6k/   : folder with Paris images and ground truth file
+            DATA_ROOT/test/roxford5k/ : folder with Oxford images and revisited ground truth file
+            DATA_ROOT/test/rparis6k/  : folder with Paris images and revisited ground truth file
+    """
+
+    # Create data folder if it does not exist
+    if not os.path.isdir(data_dir):
+        os.mkdir(data_dir)
+    
+    # Create datasets folder if it does not exist
+    datasets_dir = os.path.join(data_dir, 'test')
+    if not os.path.isdir(datasets_dir):
+        os.mkdir(datasets_dir)
+
+    # Download datasets folders test/DATASETNAME/
+    datasets = ['oxford5k', 'paris6k', 'roxford5k', 'rparis6k']
+    for di in range(len(datasets)):
+        dataset = datasets[di]
+
+        if dataset == 'oxford5k':
+            src_dir = 'http://www.robots.ox.ac.uk/~vgg/data/oxbuildings'
+            dl_files = ['oxbuild_images.tgz']
+        elif dataset == 'paris6k':
+            src_dir = 'http://www.robots.ox.ac.uk/~vgg/data/parisbuildings'
+            dl_files = ['paris_1.tgz', 'paris_2.tgz']
+        elif dataset == 'roxford5k':
+            src_dir = 'http://www.robots.ox.ac.uk/~vgg/data/oxbuildings'
+            dl_files = ['oxbuild_images.tgz']
+        elif dataset == 'rparis6k':
+            src_dir = 'http://www.robots.ox.ac.uk/~vgg/data/parisbuildings'
+            dl_files = ['paris_1.tgz', 'paris_2.tgz']
+        else:
+            raise ValueError('Unknown dataset: {}!'.format(dataset))
+
+        dst_dir = os.path.join(datasets_dir, dataset, 'jpg')
+        if not os.path.isdir(dst_dir):
+
+            # for oxford and paris download images
+            if dataset == 'oxford5k' or dataset == 'paris6k':
+                print('>> Dataset {} directory does not exist. Creating: {}'.format(dataset, dst_dir))
+                os.makedirs(dst_dir)
+                for dli in range(len(dl_files)):
+                    dl_file = dl_files[dli]
+                    src_file = os.path.join(src_dir, dl_file)
+                    dst_file = os.path.join(dst_dir, dl_file)
+                    print('>> Downloading dataset {} archive {}...'.format(dataset, dl_file))
+                    os.system('wget {} -O {}'.format(src_file, dst_file))
+                    print('>> Extracting dataset {} archive {}...'.format(dataset, dl_file))
+                    # create tmp folder
+                    dst_dir_tmp = os.path.join(dst_dir, 'tmp')
+                    os.system('mkdir {}'.format(dst_dir_tmp))
+                    # extract in tmp folder
+                    os.system('tar -zxf {} -C {}'.format(dst_file, dst_dir_tmp))
+                    # remove all (possible) subfolders by moving only files in dst_dir
+                    os.system('find {} -type f -exec mv -i {{}} {} \\;'.format(dst_dir_tmp, dst_dir))
+                    # remove tmp folder
+                    os.system('rd {}'.format(dst_dir_tmp))
+                    print('>> Extracted, deleting dataset {} archive {}...'.format(dataset, dl_file))
+                    os.system('del {}'.format(dst_file))
+
+            # for roxford and rparis just make sym links
+            elif dataset == 'roxford5k' or dataset == 'rparis6k':
+                print('>> Dataset {} directory does not exist. Creating: {}'.format(dataset, dst_dir))
+                dataset_old = dataset[1:]
+                dst_dir_old = os.path.join(datasets_dir, dataset_old, 'jpg')
+                os.mkdir(os.path.join(datasets_dir, dataset))
+                os.system('cmd /c mklink /d {} {}'.format(dst_dir_old, dst_dir))
+                print('>> Created symbolic link from {} jpg to {} jpg'.format(dataset_old, dataset))
+
+
+        gnd_src_dir = os.path.join('http://cmp.felk.cvut.cz/cnnimageretrieval/data', 'test', dataset)
+        gnd_dst_dir = os.path.join(datasets_dir, dataset)
+        gnd_dl_file = 'gnd_{}.pkl'.format(dataset)
+        gnd_src_file = os.path.join(gnd_src_dir, gnd_dl_file)
+        gnd_dst_file = os.path.join(gnd_dst_dir, gnd_dl_file)
+        if not os.path.exists(gnd_dst_file):
+            print('>> Downloading dataset {} ground truth file...'.format(dataset))
+            os.system('wget {} -O {}'.format(gnd_src_file, gnd_dst_file))
+
+
+def download_train(data_dir):
+    """
+    DOWNLOAD_TRAIN Checks, and, if required, downloads the necessary datasets for the training.
+      
+        download_train(DATA_ROOT) checks if the data necessary for running the example script exist.
+        If not it downloads it in the folder structure:
+            DATA_ROOT/train/retrieval-SfM-120k/  : folder with rsfm120k images and db files
+            DATA_ROOT/train/retrieval-SfM-30k/   : folder with rsfm30k images and db files
+    """
+
+    # Create data folder if it does not exist
+    if not os.path.isdir(data_dir):
+        os.mkdir(data_dir)
+    print(data_dir)
+    # Create datasets folder if it does not exist
+    datasets_dir = os.path.join(data_dir, 'train')
+    if not os.path.isdir(datasets_dir):
+        os.mkdir(datasets_dir)
+
+    # Download folder train/retrieval-SfM-120k/
+    src_dir = os.path.join('http://cmp.felk.cvut.cz/cnnimageretrieval/data', 'train', 'ims')
+    dst_dir = os.path.join(datasets_dir, 'retrieval-SfM-120k', 'ims')
+    dl_file = 'ims.tar.gz'
+    if not os.path.isdir(dst_dir):
+        src_file = os.path.join(src_dir, dl_file)
+        dst_file = os.path.join(dst_dir, dl_file)
+        print('>> Image directory does not exist. Creating: {}'.format(dst_dir))
+        os.makedirs(dst_dir)
+        print('>> Downloading ims.tar.gz...')
+        # os.system('wget {} -O {}'.format(src_file, dst_file))
+        print('>> Extracting {}...'.format(dst_file))
+        os.system('tar -zxf {} -C {}'.format(dst_file, dst_dir))
+        print('>> Extracted, deleting {}...'.format(dst_file))
+        os.system('del {}'.format(dst_file))
+
+    # Create symlink for train/retrieval-SfM-30k/ 
+    dst_dir_old = os.path.join(datasets_dir, 'retrieval-SfM-120k', 'ims')
+    dst_dir = os.path.join(datasets_dir, 'retrieval-SfM-30k', 'ims')
+    if not os.path.isdir(dst_dir):
+        os.makedirs(os.path.join(datasets_dir, 'retrieval-SfM-30k','ims'))
+        os.system('mklink {} {}'.format(dst_dir_old, dst_dir))
+        print('>> Created symbolic link from retrieval-SfM-120k/ims to retrieval-SfM-30k/ims')
+
+    # Download db files
+    src_dir = os.path.join('http://cmp.felk.cvut.cz/cnnimageretrieval/data', 'train', 'dbs')
+    datasets = ['retrieval-SfM-120k', 'retrieval-SfM-30k']
+    for dataset in datasets:
+        dst_dir = os.path.join(datasets_dir, dataset)
+        if dataset == 'retrieval-SfM-120k':
+            dl_files = ['{}.pkl'.format(dataset), '{}-whiten.pkl'.format(dataset)]
+        elif dataset == 'retrieval-SfM-30k':
+            dl_files = ['{}-whiten.pkl'.format(dataset)]
+
+        if not os.path.isdir(dst_dir):
+            print('>> Dataset directory does not exist. Creating: {}'.format(dst_dir))
+            os.mkdir(dst_dir)
+
+        for i in range(len(dl_files)):
+            src_file = os.path.join(src_dir, dl_files[i])
+            dst_file = os.path.join(dst_dir, dl_files[i])
+            if not os.path.isfile(dst_file):
+                print('>> DB file {} does not exist. Downloading...'.format(dl_files[i]))
+                os.system('wget {} -O {}'.format(src_file, dst_file))
diff --git a/cirtorch/utils/evaluate.py b/cirtorch/utils/evaluate.py
new file mode 100755
index 0000000..9b3ae60
--- /dev/null
+++ b/cirtorch/utils/evaluate.py
@@ -0,0 +1,149 @@
+import numpy as np
+
+def compute_ap(ranks, nres):
+    """
+    Computes average precision for given ranked indexes.
+    
+    Arguments
+    ---------
+    ranks : zerro-based ranks of positive images
+    nres  : number of positive images
+    
+    Returns
+    -------
+    ap    : average precision
+    """
+
+    # number of images ranked by the system
+    nimgranks = len(ranks)
+
+    # accumulate trapezoids in PR-plot
+    ap = 0
+
+    recall_step = 1. / nres
+
+    for j in np.arange(nimgranks):
+        rank = ranks[j]
+
+        if rank == 0:
+            precision_0 = 1.
+        else:
+            precision_0 = float(j) / rank
+
+        precision_1 = float(j + 1) / (rank + 1)
+
+        ap += (precision_0 + precision_1) * recall_step / 2.
+
+    return ap
+
+def compute_map(ranks, gnd, kappas=[]):
+    """
+    Computes the mAP for a given set of returned results.
+
+         Usage: 
+           map = compute_map (ranks, gnd) 
+                 computes mean average precsion (map) only
+        
+           map, aps, pr, prs = compute_map (ranks, gnd, kappas) 
+                 computes mean average precision (map), average precision (aps) for each query
+                 computes mean precision at kappas (pr), precision at kappas (prs) for each query
+        
+         Notes:
+         1) ranks starts from 0, ranks.shape = db_size X #queries
+         2) The junk results (e.g., the query itself) should be declared in the gnd stuct array
+         3) If there are no positive images for some query, that query is excluded from the evaluation
+    """
+
+    map = 0.
+    nq = len(gnd) # number of queries
+    aps = np.zeros(nq)
+    pr = np.zeros(len(kappas))
+    prs = np.zeros((nq, len(kappas)))
+    nempty = 0
+
+    for i in np.arange(nq):
+        qgnd = np.array(gnd[i]['ok'])
+
+        # no positive images, skip from the average
+        if qgnd.shape[0] == 0:
+            aps[i] = float('nan')
+            prs[i, :] = float('nan')
+            nempty += 1
+            continue
+
+        try:
+            qgndj = np.array(gnd[i]['junk'])
+        except:
+            qgndj = np.empty(0)
+
+        # sorted positions of positive and junk images (0 based)
+        pos  = np.arange(ranks.shape[0])[np.in1d(ranks[:,i], qgnd)]
+        junk = np.arange(ranks.shape[0])[np.in1d(ranks[:,i], qgndj)]
+
+        k = 0;
+        ij = 0;
+        if len(junk):
+            # decrease positions of positives based on the number of
+            # junk images appearing before them
+            ip = 0
+            while (ip < len(pos)):
+                while (ij < len(junk) and pos[ip] > junk[ij]):
+                    k += 1
+                    ij += 1
+                pos[ip] = pos[ip] - k
+                ip += 1
+
+        # compute ap
+        ap = compute_ap(pos, len(qgnd))
+        map = map + ap
+        aps[i] = ap
+
+        # compute precision @ k
+        pos += 1 # get it to 1-based
+        for j in np.arange(len(kappas)):
+            kq = min(max(pos), kappas[j]); 
+            prs[i, j] = (pos <= kq).sum() / kq
+        pr = pr + prs[i, :]
+
+    map = map / (nq - nempty)
+    pr = pr / (nq - nempty)
+
+    return map, aps, pr, prs
+
+
+def compute_map_and_print(dataset, ranks, gnd, kappas=[1, 5, 10]):
+    
+    # old evaluation protocol
+    if dataset.startswith('oxford5k') or dataset.startswith('paris6k'):
+        map, aps, _, _ = compute_map(ranks, gnd)
+        print('>> {}: mAP {:.2f}'.format(dataset, np.around(map*100, decimals=2)))
+
+    # new evaluation protocol
+    elif dataset.startswith('roxford5k') or dataset.startswith('rparis6k'):
+        
+        gnd_t = []
+        for i in range(len(gnd)):
+            g = {}
+            g['ok'] = np.concatenate([gnd[i]['easy']])
+            g['junk'] = np.concatenate([gnd[i]['junk'], gnd[i]['hard']])
+            gnd_t.append(g)
+        mapE, apsE, mprE, prsE = compute_map(ranks, gnd_t, kappas)
+
+        gnd_t = []
+        for i in range(len(gnd)):
+            g = {}
+            g['ok'] = np.concatenate([gnd[i]['easy'], gnd[i]['hard']])
+            g['junk'] = np.concatenate([gnd[i]['junk']])
+            gnd_t.append(g)
+        mapM, apsM, mprM, prsM = compute_map(ranks, gnd_t, kappas)
+
+        gnd_t = []
+        for i in range(len(gnd)):
+            g = {}
+            g['ok'] = np.concatenate([gnd[i]['hard']])
+            g['junk'] = np.concatenate([gnd[i]['junk'], gnd[i]['easy']])
+            gnd_t.append(g)
+        mapH, apsH, mprH, prsH = compute_map(ranks, gnd_t, kappas)
+
+        print('>> {}: mAP E: {}, M: {}, H: {}'.format(dataset, np.around(mapE*100, decimals=2), np.around(mapM*100, decimals=2), np.around(mapH*100, decimals=2)))
+        print('>> {}: mP@k{} E: {}, M: {}, H: {}'.format(dataset, kappas, np.around(mprE*100, decimals=2), np.around(mprM*100, decimals=2), np.around(mprH*100, decimals=2)))
\ No newline at end of file
diff --git a/cirtorch/utils/general.py b/cirtorch/utils/general.py
new file mode 100755
index 0000000..f85a248
--- /dev/null
+++ b/cirtorch/utils/general.py
@@ -0,0 +1,34 @@
+import os
+import hashlib
+
+def get_root():
+    return os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(os.path.realpath(__file__)))))
+
+
+def get_data_root():
+    return os.path.join(get_root(), 'data')
+
+
+def htime(c):
+    c = round(c)
+    
+    days = c // 86400
+    hours = c // 3600 % 24
+    minutes = c // 60 % 60
+    seconds = c % 60
+
+    if days > 0:
+        return '{:d}d {:d}h {:d}m {:d}s'.format(days, hours, minutes, seconds)
+    if hours > 0:
+        return '{:d}h {:d}m {:d}s'.format(hours, minutes, seconds)
+    if minutes > 0:
+        return '{:d}m {:d}s'.format(minutes, seconds)
+    return '{:d}s'.format(seconds)
+
+
+def sha256_hash(filename, block_size=65536, length=8):
+    sha256 = hashlib.sha256()
+    with open(filename, 'rb') as f:
+        for block in iter(lambda: f.read(block_size), b''):
+            sha256.update(block)
+    return sha256.hexdigest()[:length-1]
\ No newline at end of file
diff --git a/cirtorch/utils/whiten.py b/cirtorch/utils/whiten.py
new file mode 100755
index 0000000..63a38d2
--- /dev/null
+++ b/cirtorch/utils/whiten.py
@@ -0,0 +1,65 @@
+import os
+import numpy as np
+
+def whitenapply(X, m, P, dimensions=None):
+    
+    if not dimensions:
+        dimensions = P.shape[0]
+
+    X = np.dot(P[:dimensions, :], X-m)
+    X = X / (np.linalg.norm(X, ord=2, axis=0, keepdims=True) + 1e-6)
+
+    return X
+
+def pcawhitenlearn(X):
+
+    N = X.shape[1]
+
+    # Learning PCA w/o annotations
+    m = X.mean(axis=1, keepdims=True)
+    Xc = X - m
+    Xcov = np.dot(Xc, Xc.T)
+    Xcov = (Xcov + Xcov.T) / (2*N)
+    eigval, eigvec = np.linalg.eig(Xcov)
+    order = eigval.argsort()[::-1]
+    eigval = eigval[order]
+    eigvec = eigvec[:, order]
+
+    P = np.dot(np.linalg.inv(np.sqrt(np.diag(eigval))), eigvec.T)
+    
+    return m, P
+
+def whitenlearn(X, qidxs, pidxs):
+
+    # Learning Lw w annotations
+    m = X[:, qidxs].mean(axis=1, keepdims=True)
+    df = X[:, qidxs] - X[:, pidxs]
+    S = np.dot(df, df.T) / df.shape[1]
+    P = np.linalg.inv(cholesky(S))
+    df = np.dot(P, X-m)
+    D = np.dot(df, df.T)
+    eigval, eigvec = np.linalg.eig(D)
+    order = eigval.argsort()[::-1]
+    eigval = eigval[order]
+    eigvec = eigvec[:, order]
+
+    P = np.dot(eigvec.T, P)
+
+    return m, P
+
+def cholesky(S):
+    # Cholesky decomposition
+    # with adding a small value on the diagonal
+    # until matrix is positive definite
+    alpha = 0
+    while 1:
+        try:
+            L = np.linalg.cholesky(S + alpha*np.eye(*S.shape))
+            return L
+        except:
+            if alpha == 0:
+                alpha = 1e-10
+            else:
+                alpha *= 10
+            print(">>>> {}::cholesky: Matrix is not positive definite, adding {:.0e} on the diagonal"
+                .format(os.path.basename(__file__), alpha))
diff --git a/ieemoo-ai-search.py b/ieemoo-ai-search.py
new file mode 100755
index 0000000..a9b855f
--- /dev/null
+++ b/ieemoo-ai-search.py
@@ -0,0 +1,96 @@
+import sys
+import argparse
+#from utils.retrieval_index import EvaluteMap
+from utils.tools import EvaluteMap
+from utils.retrieval_feature import AntiFraudFeatureDataset
+from utils.monitor import Moniting
+from utils.updateObs import *
+from utils.config import cfg
+from utils.tools import createNet
+from flask import request,Flask
+from utils.forsegmentation import analysis
+from gevent.pywsgi import WSGIServer
+import os, base64, stat, shutil, json, time
+sys.path.append('RAFT')
+sys.path.append('RAFT/core')
+sys.path.append('RAFT/core/utils')
+from RAFT.analysis_video import *
+import logging.config
+from skywalking import agent, config
+from threading import Thread
+
+SW_SERVER = os.environ.get('SW_AGENT_COLLECTOR_BACKEND_SERVICES')
+SW_SERVICE_NAME = os.environ.get('SW_AGENT_NAME')
+if SW_SERVER and SW_SERVICE_NAME:
+    config.init() #采集服务的地址，给自己的服务起个名称
+    #config.init(collector="123.60.56.51:11800", service='ieemoo-ai-search') #采集服务的地址，给自己的服务起个名称
+    agent.start()
+os.environ["CUDA_VISIBLE_DEVICES"] = '0'
+
+app = Flask(__name__)
+
+parser = argparse.ArgumentParser()
+#parser.add_argument('--model', default='../module/ieemoo-ai-search/model/now/raft-things.pth',help="restore checkpoint")
+parser.add_argument('--model', default='../module/ieemoo-ai-search/model/now/raft-small.pth',help="restore checkpoint")
+#parser.add_argument('--small', action='store_true', help='use small model')
+parser.add_argument('--small', type=bool, default=True, help='use small model')
+parser.add_argument('--mixed_precision', action='store_true', help='use mixed precision')
+parser.add_argument('--alternate_corr', action='store_true', help='use efficent correlation implementation')
+opt, unknown = parser.parse_known_args()
+
+'''
+status 状态码
+00: 视频未解析成功(视频截取错误)
+01: 未纳入监查列表
+02: 未检测出商品
+03: 异常输出
+04: 正确识别
+'''
+status = ['00', '01', '02', '03', '04']
+net, transform, ms = createNet()
+raft_model = raft_init_model(opt)
+def setup_logging(path):
+    if os.path.exists(path):
+        with open(path, 'r') as f:
+            config = json.load(f)
+            logging.config.dictConfig(config)
+            logger = logging.getLogger("root")
+    return logger
+
+logger = setup_logging('utils/logging.json')
+@app.route('/search', methods=['POST'])
+def search():
+    pre_status = False
+    try:
+        video_name = request.form.get('video_name')
+        logger.info('get video '+video_name)
+        ocr_file_path = os.sep.join([cfg.Ocrtxt, video_name.split('.')[0]+'.txt'])
+        video_extra_info = request.form.get('video_extra_info')
+        if not video_extra_info is None:
+           with open(ocr_file_path, 'w') as f:
+                f.write(video_extra_info)
+        video_data = request.files['video']
+        videoPath = os.sep.join([cfg.VIDEOPATH, video_name])
+        video_data.save(videoPath)
+        uuid_barcode = video_name.split('.')[0] 
+        barcode_name = uuid_barcode.split('_')[-1]
+        if Moniting(barcode_name).search() == 'nomatch':
+            state = status[1]   
+            analysis_video(raft_model, videoPath, '',uuid_barcode,None,net=net, transform=transform,ms=ms, match=False)
+        else:
+            state = analysis_video(raft_model, videoPath, '',uuid_barcode,None,net=net, transform=transform,ms=ms, match=True)
+        result = uuid_barcode+'_'+state #参数修改返回结果
+    except Exception as e:
+        logger.warning(e)   #异常返回00
+        thread = Thread(target=AddObs, kwargs={'file_path':videoPath, 'status':status[3]})
+        thread.start()
+        return uuid_barcode+'_'+status[3] #参数修改返回00   
+    thread = Thread(target=AddObs, kwargs={'file_path':videoPath, 'status':state})
+    thread.start()
+    logger.info(result)
+    print('result >>>>> {}'.format(result))
+    return result
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=8085)
+
diff --git a/init.sh b/init.sh
new file mode 100644
index 0000000..14e8c3f
--- /dev/null
+++ b/init.sh
@@ -0,0 +1,4 @@
+/opt/miniconda3/bin/conda activate ieemoo
+
+/opt/miniconda3/envs/ieemoo/bin/pip install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple
+
diff --git a/interface.py b/interface.py
new file mode 100644
index 0000000..5783d58
--- /dev/null
+++ b/interface.py
@@ -0,0 +1,246 @@
+# coding=utf-8
+# /usr/bin/env pythpn
+
+import torch
+from torch.utils.model_zoo import load_url
+from torchvision import transforms
+from cirtorch.datasets.testdataset import configdataset
+from cirtorch.utils.download import download_train, download_test
+from cirtorch.utils.evaluate import compute_map_and_print
+from cirtorch.utils.general import get_data_root, htime
+from cirtorch.networks.imageretrievalnet_cpu import init_network, extract_vectors
+from cirtorch.datasets.datahelpers import imresize
+
+from PIL import Image
+import numpy as np
+import pandas as pd
+from flask import Flask, request
+import json, io, sys, time, traceback, argparse, logging, subprocess, pickle, os, yaml,shutil
+import cv2
+import pdb
+from werkzeug.utils import cached_property
+from apscheduler.schedulers.background import BackgroundScheduler
+from multiprocessing import Pool
+
+app = Flask(__name__)
+
+@app.route("/")
+def index():
+	return ""
+
+@app.route("/images/*", methods=['GET','POST'])
+def accInsurance():
+	"""
+	flask request process handle
+	:return:
+	"""
+	try:
+		if request.method == 'GET':
+			return json.dumps({'err': 1, 'msg': 'POST only'})
+		else:
+			app.logger.debug("print headers------")
+			headers = request.headers
+			headers_info = ""
+			for k, v in headers.items():
+				headers_info += "{}: {}\n".format(k, v)
+			app.logger.debug(headers_info)
+
+			app.logger.debug("print forms------")
+			forms_info = ""
+			for k, v in request.form.items():
+				forms_info += "{}: {}\n".format(k, v)
+			app.logger.debug(forms_info)
+
+			if 'query' not in request.files:
+				return json.dumps({'err': 2, 'msg': 'query image is empty'})
+
+			if 'sig' not in request.form:
+				return json.dumps({'err': 3, 'msg': 'sig is empty'})
+
+			if 'q_no' not in request.form:
+				return json.dumps({'err': 4, 'msg': 'no is empty'})
+
+			if 'q_did' not in request.form:
+				return json.dumps({'err': 5, 'msg': 'did is empty'})
+
+			if 'q_id' not in request.form:
+				return json.dumps({'err': 6, 'msg': 'id is empty'})
+
+			if 'type' not in request.form:
+				return json.dumps({'err': 7, 'msg': 'type is empty'})
+
+			img_name = request.files['query'].filename
+			img_bytes = request.files['query'].read()
+			img = request.files['query']
+			sig = request.form['sig']
+			q_no = request.form['q_no']
+			q_did = request.form['q_did']
+			q_id = request.form['q_id']
+			type = request.form['type']
+
+			if str(type) not in types:
+				return json.dumps({'err': 8, 'msg': 'type is not exist'})
+
+			if img_bytes is None:
+				return json.dumps({'err': 10, 'msg': 'img is none'})
+
+			results = imageRetrieval().retrieval_online_v0(img, q_no, q_did, q_id, type)
+
+			data = dict()
+			data['query'] = img_name
+			data['sig'] = sig
+			data['type'] = type
+			data['q_no'] = q_no
+			data['q_did'] = q_did
+			data['q_id'] = q_id
+			data['results'] = results
+
+			return json.dumps({'err': 0, 'msg': 'success', 'data': data})
+
+	except:
+		app.logger.exception(sys.exc_info())
+		return json.dumps({'err': 9, 'msg': 'unknow error'})
+
+
+class imageRetrieval():
+	def __init__(self):
+		pass
+
+	def cosine_dist(self, x, y):
+		return 100 * float(np.dot(x, y))/(np.dot(x,x)*np.dot(y,y)) ** 0.5
+
+	def inference(self, img):
+		try:
+			input = Image.open(img).convert("RGB")
+			input = imresize(input, 224)
+			input = transforms(input).unsqueeze()
+			with torch.no_grad():
+				vect = net(input)
+			return vect
+		except:
+			print('cannot indentify error')
+
+	def retrieval_online_v0(self, img, q_no, q_did, q_id, type):
+		# load model
+		query_vect = self.inference(img)
+		query_vect = list(query_vect.detach().numpy().T[0])
+
+		lsh = lsh_dict[str(type)]
+		response = lsh.query(query_vect, num_results=1, distance_func = "cosine")
+
+		try:
+			similar_path = response[0][0][1]
+			score = np.rint(self.cosine_dist(list(query_vect), list(response[0][0][0])))
+			rank_list = similar_path.split("/")
+			s_id, s_did, s_no = rank_list[-1].split("_")[-1].split(".")[0], rank_list[-1].split("_")[0], rank_list[-2]
+			results = [{"s_no": s_no, "r_did": s_did, "s_id": s_id, "score": score}]
+		except:
+			results = []
+
+		img_path = "/{}/{}_{}".format(q_no, q_did, q_id)
+		lsh.index(query_vect, extra_data=img_path)
+		lsh_dict[str(type)] = lsh
+
+		return results
+
+
+
+class initModel():
+	def __init__(self):
+		pass
+
+	def init_model(self, network, model_dir, types):
+		print(">> Loading network:\n>>>> '{}'".format(network))
+		# state = load_url(PRETRAINED[args.network], model_dir=os.path.join(get_data_root(), 'networks'))
+		state = torch.load(network)
+		# parsing net params from meta
+		# architecture, pooling, mean, std required
+		# the rest has default values, in case that is doesnt exist
+		net_params = {}
+		net_params['architecture'] = state['meta']['architecture']
+		net_params['pooling'] = state['meta']['pooling']
+		net_params['local_whitening'] = state['meta'].get('local_whitening', False)
+		net_params['regional'] = state['meta'].get('regional', False)
+		net_params['whitening'] = state['meta'].get('whitening', False)
+		net_params['mean'] = state['meta']['mean']
+		net_params['std'] = state['meta']['std']
+		net_params['pretrained'] = False
+		# network initialization
+		net = init_network(net_params)
+		net.load_state_dict(state['state_dict'])
+		print(">>>> loaded network: ")
+		print(net.meta_repr())
+		# moving network to gpu and eval mode
+		# net.cuda()
+		net.eval()
+
+		# set up the transform
+		normalize = transforms.Normalize(
+			mean=net.meta['mean'],
+			std=net.meta['std']
+		)
+		transform = transforms.Compose([
+			transforms.ToTensor(),
+			normalize
+		])
+
+		lsh_dict = dict()
+		for type in types:
+			with open(os.path.join(model_dir, "dataset_index_{}.pkl".format(str(type))), "rb") as f:
+				lsh = pickle.load(f)
+
+			lsh_dict[str(type)] = lsh
+
+		return net, lsh_dict, transforms
+
+	def init(self):
+		with open('config.yaml', 'r') as f:
+			conf = yaml.load(f)
+
+		app.logger.info(conf)
+		host = conf['website']['host']
+		port = conf['website']['port']
+		network = conf['model']['network']
+		model_dir = conf['model']['model_dir']
+		types = conf['model']['type']
+
+		net, lsh_dict, transforms = self.init_model(network, model_dir, types)
+
+		return host, port, net, lsh_dict, transforms, model_dir, types
+
+
+def job():
+	for type in types:
+		with open(os.path.join(model_dir, "dataset_index_{}_v0.pkl".format(str(type))), "wb") as f:
+			pickle.dump(lsh_dict[str(type)], f)
+			
+
+if __name__ == "__main__":
+	"""
+	start app from ssh
+	"""
+	scheduler = BackgroundScheduler()
+	host, port, net, lsh_dict, transforms, model_dir, types = initModel().init()
+	app.run(host=host, port=port, debug=True)
+	print("start server {}:{}".format(host, port))
+
+	scheduler.add_job(job, 'interval', seconds= 30)
+	scheduler.start()
+
+else:
+	"""
+	start app from gunicorn
+	"""
+	scheduler = BackgroundScheduler()
+	gunicorn_logger = logging.getLogger("gunicorn.error")
+	app.logger.handlers = gunicorn_logger.handlers
+	app.logger.setLevel(gunicorn_logger.level)
+
+	host, port, net, lsh_dict, transforms, model_dir, types = initModel().init()
+	app.logger.info("started from gunicorn...")
+
+	scheduler.add_job(job, 'interval', seconds=30)
+	scheduler.start()
+
+
+
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..bf8b9e5
--- /dev/null
+++ b/main.py
@@ -0,0 +1,16 @@
+# This is a sample Python script.
+
+# Press Shift+F10 to execute it or replace it with your code.
+# Press Double Shift to search everywhere for classes, files, tool windows, actions, and settings.
+
+
+def print_hi(name):
+    # Use a breakpoint in the code line below to debug your script.
+    print(f'Hi, {name}')  # Press Ctrl+F8 to toggle the breakpoint.
+
+
+# Press the green button in the gutter to run the script.
+if __name__ == '__main__':
+    print_hi('PyCharm')
+
+# See PyCharm help at https://www.jetbrains.com/help/pycharm/
diff --git a/nts/README.md b/nts/README.md
new file mode 100644
index 0000000..550fe35
--- /dev/null
+++ b/nts/README.md
@@ -0,0 +1,33 @@
+# NTS-Net
+
+This is a PyTorch implementation of the ECCV2018 paper "Learning to Navigate for Fine-grained Classification" (Ze Yang, Tiange Luo, Dong Wang, Zhiqiang Hu, Jun Gao, Liwei Wang).
+
+## Requirements
+- python 3+
+- pytorch 0.4+
+- numpy
+- datetime
+
+## Datasets
+Download the [CUB-200-2011](http://www.vision.caltech.edu/visipedia-data/CUB-200-2011/CUB_200_2011.tgz) datasets and put it in the root directory named **CUB_200_2011**, You can also try other fine-grained datasets.
+
+## Train the model
+If you want to train the NTS-Net, just run ``python train.py``. You may need to change the configurations in ``config.py``. The parameter ``PROPOSAL_NUM`` is ``M`` in the original paper and the parameter ``CAT_NUM`` is ``K`` in the original paper. During training, the log file and checkpoint file will be saved in ``save_dir`` directory. You can change the parameter ``resume`` to choose the checkpoint model to resume.
+
+## Test the model
+If you want to test the NTS-Net, just run ``python test.py``. You need to specify the ``test_model`` in ``config.py`` to choose the checkpoint model for testing.
+
+## Model
+We also provide the checkpoint model trained by ourselves, you can download it from [here](https://drive.google.com/file/d/1F-eKqPRjlya5GH2HwTlLKNSPEUaxCu9H/view?usp=sharing). If you test on our provided model, you will get a 87.6% test accuracy.
+
+## Reference
+If you are interested in our work and want to cite it, please acknowledge the following paper:
+
+```
+@inproceedings{Yang2018Learning,
+author = {Yang, Ze and Luo, Tiange and Wang, Dong and Hu, Zhiqiang and Gao, Jun and Wang, Liwei},
+title = {Learning to Navigate for Fine-grained Classification},
+booktitle = {ECCV},
+year = {2018}
+}
+```
diff --git a/nts/config.py b/nts/config.py
new file mode 100644
index 0000000..4caba68
--- /dev/null
+++ b/nts/config.py
@@ -0,0 +1,10 @@
+BATCH_SIZE = 16
+PROPOSAL_NUM = 6
+CAT_NUM = 4
+INPUT_SIZE = (448, 448)  # (w, h)
+LR = 0.001
+WD = 1e-4
+SAVE_FREQ = 1
+resume = ''
+test_model = 'model.ckpt'
+save_dir = '/data_4t/yangz/models/'
diff --git a/nts/core/anchors.py b/nts/core/anchors.py
new file mode 100644
index 0000000..9362598
--- /dev/null
+++ b/nts/core/anchors.py
@@ -0,0 +1,100 @@
+import numpy as np
+from config import INPUT_SIZE
+
+_default_anchors_setting = (
+    dict(layer='p3', stride=32, size=48, scale=[2 ** (1. / 3.), 2 ** (2. / 3.)], aspect_ratio=[0.667, 1, 1.5]),
+    dict(layer='p4', stride=64, size=96, scale=[2 ** (1. / 3.), 2 ** (2. / 3.)], aspect_ratio=[0.667, 1, 1.5]),
+    dict(layer='p5', stride=128, size=192, scale=[1, 2 ** (1. / 3.), 2 ** (2. / 3.)], aspect_ratio=[0.667, 1, 1.5]),
+)
+
+
+def generate_default_anchor_maps(anchors_setting=None, input_shape=INPUT_SIZE):
+    """
+    generate default anchor
+
+    :param anchors_setting: all informations of anchors
+    :param input_shape: shape of input images, e.g. (h, w)
+    :return: center_anchors: # anchors * 4 (oy, ox, h, w)
+             edge_anchors: # anchors * 4 (y0, x0, y1, x1)
+             anchor_area: # anchors * 1 (area)
+    """
+    if anchors_setting is None:
+        anchors_setting = _default_anchors_setting
+
+    center_anchors = np.zeros((0, 4), dtype=np.float32)
+    edge_anchors = np.zeros((0, 4), dtype=np.float32)
+    anchor_areas = np.zeros((0,), dtype=np.float32)
+    input_shape = np.array(input_shape, dtype=int)
+
+    for anchor_info in anchors_setting:
+
+        stride = anchor_info['stride']
+        size = anchor_info['size']
+        scales = anchor_info['scale']
+        aspect_ratios = anchor_info['aspect_ratio']
+
+        output_map_shape = np.ceil(input_shape.astype(np.float32) / stride)
+        output_map_shape = output_map_shape.astype(np.int)
+        output_shape = tuple(output_map_shape) + (4,)
+        ostart = stride / 2.
+        oy = np.arange(ostart, ostart + stride * output_shape[0], stride)
+        oy = oy.reshape(output_shape[0], 1)
+        ox = np.arange(ostart, ostart + stride * output_shape[1], stride)
+        ox = ox.reshape(1, output_shape[1])
+        center_anchor_map_template = np.zeros(output_shape, dtype=np.float32)
+        center_anchor_map_template[:, :, 0] = oy
+        center_anchor_map_template[:, :, 1] = ox
+        for scale in scales:
+            for aspect_ratio in aspect_ratios:
+                center_anchor_map = center_anchor_map_template.copy()
+                center_anchor_map[:, :, 2] = size * scale / float(aspect_ratio) ** 0.5
+                center_anchor_map[:, :, 3] = size * scale * float(aspect_ratio) ** 0.5
+
+                edge_anchor_map = np.concatenate((center_anchor_map[..., :2] - center_anchor_map[..., 2:4] / 2.,
+                                                  center_anchor_map[..., :2] + center_anchor_map[..., 2:4] / 2.),
+                                                 axis=-1)
+                anchor_area_map = center_anchor_map[..., 2] * center_anchor_map[..., 3]
+                center_anchors = np.concatenate((center_anchors, center_anchor_map.reshape(-1, 4)))
+                edge_anchors = np.concatenate((edge_anchors, edge_anchor_map.reshape(-1, 4)))
+                anchor_areas = np.concatenate((anchor_areas, anchor_area_map.reshape(-1)))
+
+    return center_anchors, edge_anchors, anchor_areas
+
+
+def hard_nms(cdds, topn=10, iou_thresh=0.25):
+    if not (type(cdds).__module__ == 'numpy' and len(cdds.shape) == 2 and cdds.shape[1] >= 5):
+        raise TypeError('edge_box_map should be N * 5+ ndarray')
+
+    cdds = cdds.copy()
+    indices = np.argsort(cdds[:, 0])
+    cdds = cdds[indices]
+    cdd_results = []
+
+    res = cdds
+
+    while res.any():
+        cdd = res[-1]
+        cdd_results.append(cdd)
+        if len(cdd_results) == topn:
+            return np.array(cdd_results)
+        res = res[:-1]
+
+        start_max = np.maximum(res[:, 1:3], cdd[1:3])
+        end_min = np.minimum(res[:, 3:5], cdd[3:5])
+        lengths = end_min - start_max
+        intersec_map = lengths[:, 0] * lengths[:, 1]
+        intersec_map[np.logical_or(lengths[:, 0] < 0, lengths[:, 1] < 0)] = 0
+        iou_map_cur = intersec_map / ((res[:, 3] - res[:, 1]) * (res[:, 4] - res[:, 2]) + (cdd[3] - cdd[1]) * (
+            cdd[4] - cdd[2]) - intersec_map)
+        res = res[iou_map_cur < iou_thresh]
+
+    return np.array(cdd_results)
+
+
+if __name__ == '__main__':
+    a = hard_nms(np.array([
+        [0.4, 1, 10, 12, 20],
+        [0.5, 1, 11, 11, 20],
+        [0.55, 20, 30, 40, 50]
+    ]), topn=100, iou_thresh=0.4)
+    print(a)
diff --git a/nts/core/dataset.py b/nts/core/dataset.py
new file mode 100644
index 0000000..948849d
--- /dev/null
+++ b/nts/core/dataset.py
@@ -0,0 +1,77 @@
+import numpy as np
+import scipy.misc
+import os
+from PIL import Image
+from torchvision import transforms
+from config import INPUT_SIZE
+
+
+class CUB():
+    def __init__(self, root, is_train=True, data_len=None):
+        self.root = root
+        self.is_train = is_train
+        img_txt_file = open(os.path.join(self.root, 'images.txt'))
+        label_txt_file = open(os.path.join(self.root, 'image_class_labels.txt'))
+        train_val_file = open(os.path.join(self.root, 'train_test_split.txt'))
+        img_name_list = []
+        for line in img_txt_file:
+            img_name_list.append(line[:-1].split(' ')[-1])
+        label_list = []
+        for line in label_txt_file:
+            label_list.append(int(line[:-1].split(' ')[-1]) - 1)
+        train_test_list = []
+        for line in train_val_file:
+            train_test_list.append(int(line[:-1].split(' ')[-1]))
+        train_file_list = [x for i, x in zip(train_test_list, img_name_list) if i]
+        test_file_list = [x for i, x in zip(train_test_list, img_name_list) if not i]
+        if self.is_train:
+            self.train_img = [scipy.misc.imread(os.path.join(self.root, 'images', train_file)) for train_file in
+                              train_file_list[:data_len]]
+            self.train_label = [x for i, x in zip(train_test_list, label_list) if i][:data_len]
+        if not self.is_train:
+            self.test_img = [scipy.misc.imread(os.path.join(self.root, 'images', test_file)) for test_file in
+                             test_file_list[:data_len]]
+            self.test_label = [x for i, x in zip(train_test_list, label_list) if not i][:data_len]
+
+    def __getitem__(self, index):
+        if self.is_train:
+            img, target = self.train_img[index], self.train_label[index]
+            if len(img.shape) == 2:
+                img = np.stack([img] * 3, 2)
+            img = Image.fromarray(img, mode='RGB')
+            img = transforms.Resize((600, 600), Image.BILINEAR)(img)
+            img = transforms.RandomCrop(INPUT_SIZE)(img)
+            img = transforms.RandomHorizontalFlip()(img)
+            img = transforms.ToTensor()(img)
+            img = transforms.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225])(img)
+
+        else:
+            img, target = self.test_img[index], self.test_label[index]
+            if len(img.shape) == 2:
+                img = np.stack([img] * 3, 2)
+            img = Image.fromarray(img, mode='RGB')
+            img = transforms.Resize((600, 600), Image.BILINEAR)(img)
+            img = transforms.CenterCrop(INPUT_SIZE)(img)
+            img = transforms.ToTensor()(img)
+            img = transforms.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225])(img)
+
+        return img, target
+
+    def __len__(self):
+        if self.is_train:
+            return len(self.train_label)
+        else:
+            return len(self.test_label)
+
+
+if __name__ == '__main__':
+    dataset = CUB(root='./CUB_200_2011')
+    print(len(dataset.train_img))
+    print(len(dataset.train_label))
+    for data in dataset:
+        print(data[0].size(), data[1])
+    dataset = CUB(root='./CUB_200_2011', is_train=False)
+    print(len(dataset.test_img))
+    print(len(dataset.test_label))
+    for data in dataset:
+        print(data[0].size(), data[1])
diff --git a/nts/core/model.py b/nts/core/model.py
new file mode 100644
index 0000000..cbec9d9
--- /dev/null
+++ b/nts/core/model.py
@@ -0,0 +1,96 @@
+from torch import nn
+import torch
+import torch.nn.functional as F
+from torch.autograd import Variable
+from core import resnet
+import numpy as np
+from core.anchors import generate_default_anchor_maps, hard_nms
+from config import CAT_NUM, PROPOSAL_NUM
+
+
+class ProposalNet(nn.Module):
+    def __init__(self):
+        super(ProposalNet, self).__init__()
+        self.down1 = nn.Conv2d(2048, 128, 3, 1, 1)
+        self.down2 = nn.Conv2d(128, 128, 3, 2, 1)
+        self.down3 = nn.Conv2d(128, 128, 3, 2, 1)
+        self.ReLU = nn.ReLU()
+        self.tidy1 = nn.Conv2d(128, 6, 1, 1, 0)
+        self.tidy2 = nn.Conv2d(128, 6, 1, 1, 0)
+        self.tidy3 = nn.Conv2d(128, 9, 1, 1, 0)
+
+    def forward(self, x):
+        batch_size = x.size(0)
+        d1 = self.ReLU(self.down1(x))
+        d2 = self.ReLU(self.down2(d1))
+        d3 = self.ReLU(self.down3(d2))
+        t1 = self.tidy1(d1).view(batch_size, -1)
+        t2 = self.tidy2(d2).view(batch_size, -1)
+        t3 = self.tidy3(d3).view(batch_size, -1)
+        return torch.cat((t1, t2, t3), dim=1)
+
+
+class attention_net(nn.Module):
+    def __init__(self, topN=4):
+        super(attention_net, self).__init__()
+        self.pretrained_model = resnet.resnet50(pretrained=True)
+        self.pretrained_model.avgpool = nn.AdaptiveAvgPool2d(1)
+        self.pretrained_model.fc = nn.Linear(512 * 4, 200)
+        self.proposal_net = ProposalNet()
+        self.topN = topN
+        self.concat_net = nn.Linear(2048 * (CAT_NUM + 1), 200)
+        self.partcls_net = nn.Linear(512 * 4, 200)
+        _, edge_anchors, _ = generate_default_anchor_maps()
+        self.pad_side = 224
+        self.edge_anchors = (edge_anchors + 224).astype(np.int)
+
+    def forward(self, x):
+        resnet_out, rpn_feature, feature = self.pretrained_model(x)
+        x_pad = F.pad(x, (self.pad_side, self.pad_side, self.pad_side, self.pad_side), mode='constant', value=0)
+        batch = x.size(0)
+        # we will reshape rpn to shape: batch * nb_anchor
+        rpn_score = self.proposal_net(rpn_feature.detach())
+        all_cdds = [
+            np.concatenate((x.reshape(-1, 1), self.edge_anchors.copy(), np.arange(0, len(x)).reshape(-1, 1)), axis=1)
+            for x in rpn_score.data.cpu().numpy()]
+        top_n_cdds = [hard_nms(x, topn=self.topN, iou_thresh=0.25) for x in all_cdds]
+        top_n_cdds = np.array(top_n_cdds)
+        top_n_index = top_n_cdds[:, :, -1].astype(np.int)
+        top_n_index = torch.from_numpy(top_n_index).cuda()
+        top_n_prob = torch.gather(rpn_score, dim=1, index=top_n_index)
+        part_imgs = torch.zeros([batch, self.topN, 3, 224, 224]).cuda()
+        for i in range(batch):
+            for j in range(self.topN):
+                [y0, x0, y1, x1] = top_n_cdds[i][j, 1:5].astype(np.int)
+                part_imgs[i:i + 1, j] = F.interpolate(x_pad[i:i + 1, :, y0:y1, x0:x1], size=(224, 224), mode='bilinear',
+                                                      align_corners=True)
+        part_imgs = part_imgs.view(batch * self.topN, 3, 224, 224)
+        _, _, part_features = self.pretrained_model(part_imgs.detach())
+        part_feature = part_features.view(batch, self.topN, -1)
+        part_feature = part_feature[:, :CAT_NUM, ...].contiguous()
+        part_feature = part_feature.view(batch, -1)
+        # concat_logits have the shape: B*200
+        concat_out = torch.cat([part_feature, feature], dim=1)
+        concat_logits = self.concat_net(concat_out)
+        raw_logits = resnet_out
+        # part_logits have the shape: B*N*200
+        part_logits = self.partcls_net(part_features).view(batch, self.topN, -1)
+        return [raw_logits, concat_logits, part_logits, top_n_index, top_n_prob]
+
+
+def list_loss(logits, targets):
+    temp = F.log_softmax(logits, -1)
+    loss = [-temp[i][targets[i].item()] for i in range(logits.size(0))]
+    return torch.stack(loss)
+
+
+def ranking_loss(score, targets, proposal_num=PROPOSAL_NUM):
+    loss = Variable(torch.zeros(1).cuda())
+    batch_size = score.size(0)
+    for i in range(proposal_num):
+        targets_p = (targets > targets[:, i].unsqueeze(1)).type(torch.cuda.FloatTensor)
+        pivot = score[:, i].unsqueeze(1)
+        loss_p = (1 - pivot + score) * targets_p
+        loss_p = torch.sum(F.relu(loss_p))
+        loss += loss_p
+    return loss / batch_size
diff --git a/nts/core/resnet.py b/nts/core/resnet.py
new file mode 100644
index 0000000..50f8fd9
--- /dev/null
+++ b/nts/core/resnet.py
@@ -0,0 +1,212 @@
+import torch.nn as nn
+import math
+import torch.utils.model_zoo as model_zoo
+
+__all__ = ['ResNet', 'resnet18', 'resnet34', 'resnet50', 'resnet101',
+           'resnet152']
+
+model_urls = {
+    'resnet18': 'https://download.pytorch.org/models/resnet18-5c106cde.pth',
+    'resnet34': 'https://download.pytorch.org/models/resnet34-333f7ec4.pth',
+    'resnet50': 'https://download.pytorch.org/models/resnet50-19c8e357.pth',
+    'resnet101': 'https://download.pytorch.org/models/resnet101-5d3b4d8f.pth',
+    'resnet152': 'https://download.pytorch.org/models/resnet152-b121ed2d.pth',
+}
+
+
+def conv3x3(in_planes, out_planes, stride=1):
+    "3x3 convolution with padding"
+    return nn.Conv2d(in_planes, out_planes, kernel_size=3, stride=stride,
+                     padding=1, bias=False)
+
+
+class BasicBlock(nn.Module):
+    expansion = 1
+
+    def __init__(self, inplanes, planes, stride=1, downsample=None):
+        super(BasicBlock, self).__init__()
+        self.conv1 = conv3x3(inplanes, planes, stride)
+        self.bn1 = nn.BatchNorm2d(planes)
+        self.relu = nn.ReLU(inplace=True)
+        self.conv2 = conv3x3(planes, planes)
+        self.bn2 = nn.BatchNorm2d(planes)
+        self.downsample = downsample
+        self.stride = stride
+
+    def forward(self, x):
+        residual = x
+
+        out = self.conv1(x)
+        out = self.bn1(out)
+        out = self.relu(out)
+
+        out = self.conv2(out)
+        out = self.bn2(out)
+
+        if self.downsample is not None:
+            residual = self.downsample(x)
+
+        out += residual
+        out = self.relu(out)
+
+        return out
+
+
+class Bottleneck(nn.Module):
+    expansion = 4
+
+    def __init__(self, inplanes, planes, stride=1, downsample=None):
+        super(Bottleneck, self).__init__()
+        self.conv1 = nn.Conv2d(inplanes, planes, kernel_size=1, bias=False)
+        self.bn1 = nn.BatchNorm2d(planes)
+        self.conv2 = nn.Conv2d(planes, planes, kernel_size=3, stride=stride,
+                               padding=1, bias=False)
+        self.bn2 = nn.BatchNorm2d(planes)
+        self.conv3 = nn.Conv2d(planes, planes * 4, kernel_size=1, bias=False)
+        self.bn3 = nn.BatchNorm2d(planes * 4)
+        self.relu = nn.ReLU(inplace=True)
+        self.downsample = downsample
+        self.stride = stride
+
+    def forward(self, x):
+        residual = x
+
+        out = self.conv1(x)
+        out = self.bn1(out)
+        out = self.relu(out)
+
+        out = self.conv2(out)
+        out = self.bn2(out)
+        out = self.relu(out)
+
+        out = self.conv3(out)
+        out = self.bn3(out)
+
+        if self.downsample is not None:
+            residual = self.downsample(x)
+
+        out += residual
+        out = self.relu(out)
+
+        return out
+
+
+class ResNet(nn.Module):
+    def __init__(self, block, layers, num_classes=1000):
+        self.inplanes = 64
+        super(ResNet, self).__init__()
+        self.conv1 = nn.Conv2d(3, 64, kernel_size=7, stride=2, padding=3,
+                               bias=False)
+        self.bn1 = nn.BatchNorm2d(64)
+        self.relu = nn.ReLU(inplace=True)
+        self.maxpool = nn.MaxPool2d(kernel_size=3, stride=2, padding=1)
+        self.layer1 = self._make_layer(block, 64, layers[0])
+        self.layer2 = self._make_layer(block, 128, layers[1], stride=2)
+        self.layer3 = self._make_layer(block, 256, layers[2], stride=2)
+        self.layer4 = self._make_layer(block, 512, layers[3], stride=2)
+        self.avgpool = nn.AvgPool2d(7)
+        self.fc = nn.Linear(512 * block.expansion, num_classes)
+
+        for m in self.modules():
+            if isinstance(m, nn.Conv2d):
+                n = m.kernel_size[0] * m.kernel_size[1] * m.out_channels
+                m.weight.data.normal_(0, math.sqrt(2. / n))
+            elif isinstance(m, nn.BatchNorm2d):
+                m.weight.data.fill_(1)
+                m.bias.data.zero_()
+
+    def _make_layer(self, block, planes, blocks, stride=1):
+        downsample = None
+        if stride != 1 or self.inplanes != planes * block.expansion:
+            downsample = nn.Sequential(
+                nn.Conv2d(self.inplanes, planes * block.expansion,
+                          kernel_size=1, stride=stride, bias=False),
+                nn.BatchNorm2d(planes * block.expansion),
+            )
+
+        layers = []
+        layers.append(block(self.inplanes, planes, stride, downsample))
+        self.inplanes = planes * block.expansion
+        for i in range(1, blocks):
+            layers.append(block(self.inplanes, planes))
+
+        return nn.Sequential(*layers)
+
+    def forward(self, x):
+        x = self.conv1(x)
+        x = self.bn1(x)
+        x = self.relu(x)
+        x = self.maxpool(x)
+
+        x = self.layer1(x)
+        x = self.layer2(x)
+        x = self.layer3(x)
+        x = self.layer4(x)
+        feature1 = x
+        x = self.avgpool(x)
+        x = x.view(x.size(0), -1)
+        x = nn.Dropout(p=0.5)(x)
+        feature2 = x
+        x = self.fc(x)
+
+        return x, feature1, feature2
+
+
+def resnet18(pretrained=False, **kwargs):
+    """Constructs a ResNet-18 model.
+
+    Args:
+        pretrained (bool): If True, returns a model pre-trained on ImageNet
+    """
+    model = ResNet(BasicBlock, [2, 2, 2, 2], **kwargs)
+    if pretrained:
+        model.load_state_dict(model_zoo.load_url(model_urls['resnet18']))
+    return model
+
+
+def resnet34(pretrained=False, **kwargs):
+    """Constructs a ResNet-34 model.
+
+    Args:
+        pretrained (bool): If True, returns a model pre-trained on ImageNet
+    """
+    model = ResNet(BasicBlock, [3, 4, 6, 3], **kwargs)
+    if pretrained:
+        model.load_state_dict(model_zoo.load_url(model_urls['resnet34']))
+    return model
+
+
+def resnet50(pretrained=False, **kwargs):
+    """Constructs a ResNet-50 model.
+
+    Args:
+        pretrained (bool): If True, returns a model pre-trained on ImageNet
+    """
+    model = ResNet(Bottleneck, [3, 4, 6, 3], **kwargs)
+    if pretrained:
+        model.load_state_dict(model_zoo.load_url(model_urls['resnet50']))
+    return model
+
+
+def resnet101(pretrained=False, **kwargs):
+    """Constructs a ResNet-101 model.
+
+    Args:
+        pretrained (bool): If True, returns a model pre-trained on ImageNet
+    """
+    model = ResNet(Bottleneck, [3, 4, 23, 3], **kwargs)
+    if pretrained:
+        model.load_state_dict(model_zoo.load_url(model_urls['resnet101']))
+    return model
+
+
+def resnet152(pretrained=False, **kwargs):
+    """Constructs a ResNet-152 model.
+
+    Args:
+        pretrained (bool): If True, returns a model pre-trained on ImageNet
+    """
+    model = ResNet(Bottleneck, [3, 8, 36, 3], **kwargs)
+    if pretrained:
+        model.load_state_dict(model_zoo.load_url(model_urls['resnet152']))
+    return model
diff --git a/nts/core/utils.py b/nts/core/utils.py
new file mode 100644
index 0000000..536c166
--- /dev/null
+++ b/nts/core/utils.py
@@ -0,0 +1,104 @@
+from __future__ import print_function
+import os
+import sys
+import time
+import logging
+
+_, term_width = os.popen('stty size', 'r').read().split()
+term_width = int(term_width)
+
+TOTAL_BAR_LENGTH = 40.
+last_time = time.time()
+begin_time = last_time
+
+
+def progress_bar(current, total, msg=None):
+    global last_time, begin_time
+    if current == 0:
+        begin_time = time.time()  # Reset for new bar.
+
+    cur_len = int(TOTAL_BAR_LENGTH * current / total)
+    rest_len = int(TOTAL_BAR_LENGTH - cur_len) - 1
+
+    sys.stdout.write(' [')
+    for i in range(cur_len):
+        sys.stdout.write('=')
+    sys.stdout.write('>')
+    for i in range(rest_len):
+        sys.stdout.write('.')
+    sys.stdout.write(']')
+
+    cur_time = time.time()
+    step_time = cur_time - last_time
+    last_time = cur_time
+    tot_time = cur_time - begin_time
+
+    L = []
+    L.append('  Step: %s' % format_time(step_time))
+    L.append(' | Tot: %s' % format_time(tot_time))
+    if msg:
+        L.append(' | ' + msg)
+
+    msg = ''.join(L)
+    sys.stdout.write(msg)
+    for i in range(term_width - int(TOTAL_BAR_LENGTH) - len(msg) - 3):
+        sys.stdout.write(' ')
+
+    # Go back to the center of the bar.
+    for i in range(term_width - int(TOTAL_BAR_LENGTH / 2)):
+        sys.stdout.write('\b')
+    sys.stdout.write(' %d/%d ' % (current + 1, total))
+
+    if current < total - 1:
+        sys.stdout.write('\r')
+    else:
+        sys.stdout.write('\n')
+    sys.stdout.flush()
+
+
+def format_time(seconds):
+    days = int(seconds / 3600 / 24)
+    seconds = seconds - days * 3600 * 24
+    hours = int(seconds / 3600)
+    seconds = seconds - hours * 3600
+    minutes = int(seconds / 60)
+    seconds = seconds - minutes * 60
+    secondsf = int(seconds)
+    seconds = seconds - secondsf
+    millis = int(seconds * 1000)
+
+    f = ''
+    i = 1
+    if days > 0:
+        f += str(days) + 'D'
+        i += 1
+    if hours > 0 and i <= 2:
+        f += str(hours) + 'h'
+        i += 1
+    if minutes > 0 and i <= 2:
+        f += str(minutes) + 'm'
+        i += 1
+    if secondsf > 0 and i <= 2:
+        f += str(secondsf) + 's'
+        i += 1
+    if millis > 0 and i <= 2:
+        f += str(millis) + 'ms'
+        i += 1
+    if f == '':
+        f = '0ms'
+    return f
+
+
+def init_log(output_dir):
+    logging.basicConfig(level=logging.DEBUG,
+                        format='%(asctime)s %(message)s',
+                        datefmt='%Y%m%d-%H:%M:%S',
+                        filename=os.path.join(output_dir, 'log.log'),
+                        filemode='w')
+    console = logging.StreamHandler()
+    console.setLevel(logging.INFO)
+    logging.getLogger('').addHandler(console)
+    return logging
+
+if __name__ == '__main__':
+    pass
diff --git a/nts/test.py b/nts/test.py
new file mode 100644
index 0000000..ca6e9c6
--- /dev/null
+++ b/nts/test.py
@@ -0,0 +1,74 @@
+import os
+from torch.autograd import Variable
+import torch.utils.data
+from torch.nn import DataParallel
+from config import BATCH_SIZE, PROPOSAL_NUM, test_model
+from core import model, dataset
+from core.utils import progress_bar
+
+os.environ['CUDA_VISIBLE_DEVICES'] = '0,1,2,3'
+if not test_model:
+    raise NameError('please set the test_model file to choose the checkpoint!')
+# read dataset
+trainset = dataset.CUB(root='./CUB_200_2011', is_train=True, data_len=None)
+trainloader = torch.utils.data.DataLoader(trainset, batch_size=BATCH_SIZE,
+                                          shuffle=True, num_workers=8, drop_last=False)
+testset = dataset.CUB(root='./CUB_200_2011', is_train=False, data_len=None)
+testloader = torch.utils.data.DataLoader(testset, batch_size=BATCH_SIZE,
+                                         shuffle=False, num_workers=8, drop_last=False)
+# define model
+net = model.attention_net(topN=PROPOSAL_NUM)
+ckpt = torch.load(test_model)
+net.load_state_dict(ckpt['net_state_dict'])
+net = net.cuda()
+net = DataParallel(net)
+creterion = torch.nn.CrossEntropyLoss()
+
+# evaluate on train set
+train_loss = 0
+train_correct = 0
+total = 0
+net.eval()
+
+for i, data in enumerate(trainloader):
+    with torch.no_grad():
+        img, label = data[0].cuda(), data[1].cuda()
+        batch_size = img.size(0)
+        _, concat_logits, _, _, _ = net(img)
+        # calculate loss
+        concat_loss = creterion(concat_logits, label)
+        # calculate accuracy
+        _, concat_predict = torch.max(concat_logits, 1)
+        total += batch_size
+        train_correct += torch.sum(concat_predict.data == label.data)
+        train_loss += concat_loss.item() * batch_size
+        progress_bar(i, len(trainloader), 'eval on train set')
+
+train_acc = float(train_correct) / total
+train_loss = train_loss / total
+print('train set loss: {:.3f} and train set acc: {:.3f} total sample: {}'.format(train_loss, train_acc, total))
+
+
+# evaluate on test set
+test_loss = 0
+test_correct = 0
+total = 0
+for i, data in enumerate(testloader):
+    with torch.no_grad():
+        img, label = data[0].cuda(), data[1].cuda()
+        batch_size = img.size(0)
+        _, concat_logits, _, _, _ = net(img)
+        # calculate loss
+        concat_loss = creterion(concat_logits, label)
+        # calculate accuracy
+        _, concat_predict = torch.max(concat_logits, 1)
+        total += batch_size
+        test_correct += torch.sum(concat_predict.data == label.data)
+        test_loss += concat_loss.item() * batch_size
+        progress_bar(i, len(testloader), 'eval on test set')
+
+test_acc = float(test_correct) / total
+test_loss = test_loss / total
+print('test set loss: {:.3f} and test set acc: {:.3f} total sample: {}'.format(test_loss, test_acc, total))
+
+print('finishing testing')
diff --git a/nts/train.py b/nts/train.py
new file mode 100644
index 0000000..47a5524
--- /dev/null
+++ b/nts/train.py
@@ -0,0 +1,152 @@
+import os
+import torch.utils.data
+from torch.nn import DataParallel
+from datetime import datetime
+from torch.optim.lr_scheduler import MultiStepLR
+from config import BATCH_SIZE, PROPOSAL_NUM, SAVE_FREQ, LR, WD, resume, save_dir
+from core import model, dataset
+from core.utils import init_log, progress_bar
+
+os.environ['CUDA_VISIBLE_DEVICES'] = '0,1,2,3'
+start_epoch = 1
+save_dir = os.path.join(save_dir, datetime.now().strftime('%Y%m%d_%H%M%S'))
+if os.path.exists(save_dir):
+    raise NameError('model dir exists!')
+os.makedirs(save_dir)
+logging = init_log(save_dir)
+_print = logging.info
+
+# read dataset
+trainset = dataset.CUB(root='./CUB_200_2011', is_train=True, data_len=None)
+trainloader = torch.utils.data.DataLoader(trainset, batch_size=BATCH_SIZE,
+                                          shuffle=True, num_workers=8, drop_last=False)
+testset = dataset.CUB(root='./CUB_200_2011', is_train=False, data_len=None)
+testloader = torch.utils.data.DataLoader(testset, batch_size=BATCH_SIZE,
+                                         shuffle=False, num_workers=8, drop_last=False)
+# define model
+net = model.attention_net(topN=PROPOSAL_NUM)
+if resume:
+    ckpt = torch.load(resume)
+    net.load_state_dict(ckpt['net_state_dict'])
+    start_epoch = ckpt['epoch'] + 1
+creterion = torch.nn.CrossEntropyLoss()
+
+# define optimizers
+raw_parameters = list(net.pretrained_model.parameters())
+part_parameters = list(net.proposal_net.parameters())
+concat_parameters = list(net.concat_net.parameters())
+partcls_parameters = list(net.partcls_net.parameters())
+
+raw_optimizer = torch.optim.SGD(raw_parameters, lr=LR, momentum=0.9, weight_decay=WD)
+concat_optimizer = torch.optim.SGD(concat_parameters, lr=LR, momentum=0.9, weight_decay=WD)
+part_optimizer = torch.optim.SGD(part_parameters, lr=LR, momentum=0.9, weight_decay=WD)
+partcls_optimizer = torch.optim.SGD(partcls_parameters, lr=LR, momentum=0.9, weight_decay=WD)
+schedulers = [MultiStepLR(raw_optimizer, milestones=[60, 100], gamma=0.1),
+              MultiStepLR(concat_optimizer, milestones=[60, 100], gamma=0.1),
+              MultiStepLR(part_optimizer, milestones=[60, 100], gamma=0.1),
+              MultiStepLR(partcls_optimizer, milestones=[60, 100], gamma=0.1)]
+net = net.cuda()
+net = DataParallel(net)
+
+for epoch in range(start_epoch, 500):
+    for scheduler in schedulers:
+        scheduler.step()
+
+    # begin training
+    _print('--' * 50)
+    net.train()
+    for i, data in enumerate(trainloader):
+        img, label = data[0].cuda(), data[1].cuda()
+        batch_size = img.size(0)
+        raw_optimizer.zero_grad()
+        part_optimizer.zero_grad()
+        concat_optimizer.zero_grad()
+        partcls_optimizer.zero_grad()
+
+        raw_logits, concat_logits, part_logits, _, top_n_prob = net(img)
+        part_loss = model.list_loss(part_logits.view(batch_size * PROPOSAL_NUM, -1),
+                                    label.unsqueeze(1).repeat(1, PROPOSAL_NUM).view(-1)).view(batch_size, PROPOSAL_NUM)
+        raw_loss = creterion(raw_logits, label)
+        concat_loss = creterion(concat_logits, label)
+        rank_loss = model.ranking_loss(top_n_prob, part_loss)
+        partcls_loss = creterion(part_logits.view(batch_size * PROPOSAL_NUM, -1),
+                                 label.unsqueeze(1).repeat(1, PROPOSAL_NUM).view(-1))
+
+        total_loss = raw_loss + rank_loss + concat_loss + partcls_loss
+        total_loss.backward()
+        raw_optimizer.step()
+        part_optimizer.step()
+        concat_optimizer.step()
+        partcls_optimizer.step()
+        progress_bar(i, len(trainloader), 'train')
+
+    if epoch % SAVE_FREQ == 0:
+        train_loss = 0
+        train_correct = 0
+        total = 0
+        net.eval()
+        for i, data in enumerate(trainloader):
+            with torch.no_grad():
+                img, label = data[0].cuda(), data[1].cuda()
+                batch_size = img.size(0)
+                _, concat_logits, _, _, _ = net(img)
+                # calculate loss
+                concat_loss = creterion(concat_logits, label)
+                # calculate accuracy
+                _, concat_predict = torch.max(concat_logits, 1)
+                total += batch_size
+                train_correct += torch.sum(concat_predict.data == label.data)
+                train_loss += concat_loss.item() * batch_size
+                progress_bar(i, len(trainloader), 'eval train set')
+
+        train_acc = float(train_correct) / total
+        train_loss = train_loss / total
+
+        _print(
+            'epoch:{} - train loss: {:.3f} and train acc: {:.3f} total sample: {}'.format(
+                epoch,
+                train_loss,
+                train_acc,
+                total))
+
+	# evaluate on test set
+        test_loss = 0
+        test_correct = 0
+        total = 0
+        for i, data in enumerate(testloader):
+            with torch.no_grad():
+                img, label = data[0].cuda(), data[1].cuda()
+                batch_size = img.size(0)
+                _, concat_logits, _, _, _ = net(img)
+                # calculate loss
+                concat_loss = creterion(concat_logits, label)
+                # calculate accuracy
+                _, concat_predict = torch.max(concat_logits, 1)
+                total += batch_size
+                test_correct += torch.sum(concat_predict.data == label.data)
+                test_loss += concat_loss.item() * batch_size
+                progress_bar(i, len(testloader), 'eval test set')
+
+        test_acc = float(test_correct) / total
+        test_loss = test_loss / total
+        _print(
+            'epoch:{} - test loss: {:.3f} and test acc: {:.3f} total sample: {}'.format(
+                epoch,
+                test_loss,
+                test_acc,
+                total))
+
+	# save model
+        net_state_dict = net.module.state_dict()
+        if not os.path.exists(save_dir):
+            os.mkdir(save_dir)
+        torch.save({
+            'epoch': epoch,
+            'train_loss': train_loss,
+            'train_acc': train_acc,
+            'test_loss': test_loss,
+            'test_acc': test_acc,
+            'net_state_dict': net_state_dict},
+            os.path.join(save_dir, '%03d.ckpt' % epoch))
+
+print('finishing training')
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..717bfea
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,22 @@
+esdk_obs_python==3.21.8
+Flask==2.0.0
+gevent==21.1.2
+matplotlib==3.4.1
+numpy==1.20.2
+esdk-obs-python --trusted-host pypi.org
+opencv_python==4.5.5.64
+opencv-contrib-python==4.5.5.64
+Pillow==9.1.0
+scipy==1.6.2
+setuptools==49.6.0
+coremltools==5.2.0
+onnx==1.7.0
+pandas==1.2.4
+pycocotools==2.0.2
+PyYAML==6.0
+requests==2.25.1
+seaborn==0.11.1
+thop==0.0.31.post2005241907
+tqdm==4.60.0
+ml-collections==0.1.1
+apache-skywalking
diff --git a/sample_server.py b/sample_server.py
new file mode 100755
index 0000000..fa7e047
--- /dev/null
+++ b/sample_server.py
@@ -0,0 +1,112 @@
+import sys
+import argparse
+#from utils.retrieval_index import EvaluteMap
+from utils.tools import EvaluteMap
+from utils.retrieval_feature import AntiFraudFeatureDataset
+from utils.monitor import Moniting
+from utils.updateObs import *
+#from utils.decide import Decide
+from utils.config import cfg
+from utils.tools import createNet
+from flask import request,Flask, jsonify
+from utils.forsegmentation import analysis
+from gevent.pywsgi import WSGIServer
+import os, base64, stat, shutil
+import pdb
+sys.path.append('RAFT')
+sys.path.append('RAFT/core')
+sys.path.append('RAFT/core/utils')
+from RAFT.analysis_video import *
+import time
+os.environ["CUDA_VISIBLE_DEVICES"] = '0,1'
+app = Flask(__name__)
+parser = argparse.ArgumentParser()
+parser.add_argument('--model', default='RAFT/models/raft-things.pth',help="restore checkpoint")
+parser.add_argument('--small', action='store_true', help='use small model')
+parser.add_argument('--mixed_precision', action='store_true', help='use mixed precision')
+parser.add_argument('--alternate_corr', action='store_true', help='use efficent correlation implementation')
+opt, unknown = parser.parse_known_args()
+'''
+status 状态码
+00: 视频未解析成功(视频截取错误)
+01: 未纳入监查列表
+02: 未检测出商品
+03: 异常输出
+04: 正确识别
+'''
+status = ['00', '01', '02', '03', '04']
+net, transform, ms = createNet()
+raft_model = raft_init_model(opt)
+def get_video():
+    url = "https://api.ieemoo.com/emoo-train/collection/getVideoCollectByTime.do"
+    data = {"startTime":"2022-01-25", "endTime":"2022-01-26"}
+    r = requests.post(url=url, data=data)
+    videonames = []
+    filename = cfg.SAVIDEOPATH 
+    for dictdata in r.json()['data']:
+        urlpath = dictdata["videoPath"]
+        videonames.append(urlpath)
+    for urlname in videonames:
+        videoname = os.path.basename(urlname)
+        savepath = os.sep.join([filename, videoname])
+        filepath, _ = urllib.request.urlretrieve(urlname, savepath, _progress)
+
+def search(video_name):
+    #get_video()
+    T1 = time.time()
+    pre_status = False
+    try:
+      video_path = os.sep.join([cfg.SAVIDEOPATH, video_name])
+      uuid_barcode = video_name.split('.')[0] 
+      barcode_name = uuid_barcode.split('_')[-1]
+      #pdb.set_trace()
+      photo_nu = analysis_video(raft_model, video_path, cfg.SAMPLEIMGS, uuid_barcode)
+      if not Moniting(barcode_name).search() == 'nomatch':
+          if photo_nu == 0:
+              deleteimg(uuid_barcode)
+              return uuid_barcode+'_0.90_!'+status[0]+'_'+video_name
+          #Addimg(uuid_barcode)
+          feature_dict = AntiFraudFeatureDataset(uuid_barcode, cfg.SAMPLEIMGS, 'sample').extractFeature(net, transform, ms)
+          res = EvaluteMap().match_images(feature_dict, barcode_name)
+          if res<cfg.THRESHOLD: pre_status = status[2]
+          else: pre_status = status[4]
+      else:
+          pre_status = status[1]
+          res = '0.90'
+    except:
+          return uuid_barcode+'_0.90_!'+'_'+status[3]+'_'+video_name
+    data = uuid_barcode+'_'+str(res)+'_!'
+    print(data)
+    if pre_status == '04':#去除异常与识别正确
+        deleteimg(uuid_barcode)
+    result = data+'_'+pre_status+'_'+video_name
+    T2 = time.time()
+    print('程序运行总时间:%s秒' % ((T2 - T1) ))
+    print(result)
+    return result
+
+def match():
+    n = 0
+    total = len(os.listdir(cfg.SAVIDEOPATH))
+    f = open('tmp.txt', 'a')
+    for video_name in os.listdir(cfg.SAVIDEOPATH):
+        result = search(video_name)
+        score = result.split('!')[0].split('_')[-2]
+        if float(score) >cfg.THRESHOLD:
+            if not float(score) == 0.90:
+                #print('video_name',video_name)
+                f.write(result+'\n')
+                n += 1
+            else:
+                total -= 1
+        if not n == 0:
+            print(n/total)
+    f.close()
+
+def deleteimg(uuid_barcode):
+    for img_name in os.listdir(cfg.SAMPLEIMGS):
+        if uuid_barcode in img_name:
+            os.remove(os.sep.join([cfg.SAMPLEIMGS, img_name]))
+
+if __name__ == '__main__':
+    match()
diff --git a/server.py b/server.py
new file mode 100755
index 0000000..dce33d9
--- /dev/null
+++ b/server.py
@@ -0,0 +1,85 @@
+import sys
+import argparse
+#from utils.retrieval_index import EvaluteMap
+from utils.tools import EvaluteMap
+from utils.retrieval_feature import AntiFraudFeatureDataset
+from utils.monitor import Moniting
+from utils.updateObs import *
+from utils.config import cfg
+from utils.tools import createNet
+from flask import request,Flask, jsonify
+from utils.forsegmentation import analysis
+from gevent.pywsgi import WSGIServer
+import os, base64, stat, shutil
+sys.path.append('RAFT')
+sys.path.append('RAFT/core')
+sys.path.append('RAFT/core/utils')
+from RAFT.analysis_video import *
+
+os.environ["CUDA_VISIBLE_DEVICES"] = '0,1'
+app = Flask(__name__)
+parser = argparse.ArgumentParser()
+parser.add_argument('--model', default='RAFT/models/raft-things.pth',help="restore checkpoint")
+parser.add_argument('--small', action='store_true', help='use small model')
+parser.add_argument('--mixed_precision', action='store_true', help='use mixed precision')
+parser.add_argument('--alternate_corr', action='store_true', help='use efficent correlation implementation')
+opt, unknown = parser.parse_known_args()
+'''
+status 状态码
+00: 视频未解析成功(视频截取错误)
+01: 未纳入监查列表
+02: 未检测出商品
+03: 异常输出
+04: 正确识别
+'''
+status = ['00', '01', '02', '03', '04']
+net, transform, ms = createNet()
+raft_model = raft_init_model(opt)
+@app.route('/search', methods=['POST'])
+def search():
+    pre_status = False
+    try:
+      video_name = request.form.get('video_name')
+      video_data = request.files['video']
+      video_path = os.sep.join([cfg.VIDEOPATH, video_name])
+      video_data.save(video_path)
+      uuid_barcode = video_name.split('.')[0] 
+      barcode_name = uuid_barcode.split('_')[-1]
+      photo_nu = analysis_video(raft_model, video_path, cfg.TEST_IMG_DIR, uuid_barcode)
+      Addimg(uuid_barcode)
+      if not Moniting(barcode_name).search() == 'nomatch':
+          if photo_nu == 0:
+              deleteimg(uuid_barcode)
+              AddObs(video_path, status[0])
+              return uuid_barcode+'_0.90_!_'+status[0]+'_'+video_name
+          #Addimg(uuid_barcode)
+          feature_dict = AntiFraudFeatureDataset(uuid_barcode).extractFeature(net, transform, ms)
+          res = EvaluteMap().match_images(feature_dict, barcode_name)
+          if res == 'nan':
+              res = '0.90'
+              pre_status = status[1]
+          if res<cfg.THRESHOLD: pre_status = status[2]
+          else: pre_status = status[4]
+      else:
+          pre_status = status[1]
+          res = '0.90'
+    except:
+          AddObs(video_path, status[3])
+          deleteimg(uuid_barcode)
+          return uuid_barcode+'_0.90_!_'+status[3]+'_'+video_name
+    data = uuid_barcode+'_'+str(res)+'_!'
+    if pre_status == '04':
+        deleteimg(uuid_barcode)
+    AddObs(video_path, pre_status)
+    print('result:',data)
+    return data+'_'+pre_status+'_'+video_name
+
+def deleteimg(uuid_barcode):
+    for img_name in os.listdir(cfg.TEST_IMG_DIR):
+        if uuid_barcode in img_name:
+            os.remove(os.sep.join([cfg.TEST_IMG_DIR, img_name]))
+
+if __name__ == '__main__':
+#        http_server = WSGIServer(('192.168.1.142', 6001), app)
+#        http_server.serve_forever()
+        app.run()
diff --git a/start.sh b/start.sh
new file mode 100644
index 0000000..c2427de
--- /dev/null
+++ b/start.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+supervisorctl start ieemoo-ai-search
diff --git a/stop.sh b/stop.sh
new file mode 100644
index 0000000..b2d67f2
--- /dev/null
+++ b/stop.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+supervisorctl stop ieemoo-ai-search
diff --git a/updatefile.py b/updatefile.py
new file mode 100644
index 0000000..4da307e
--- /dev/null
+++ b/updatefile.py
@@ -0,0 +1,73 @@
+import sys
+import argparse
+import requests
+from utils.tools import EvaluteMap
+from utils.retrieval_feature import AntiFraudFeatureDataset
+from utils.tools import createNet, rotate_bound
+from utils.monitor import Moniting
+from cirtorch.networks.imageretrievalnet import init_network, extract_vectors
+from utils.config import cfg
+from utils.updateObs import *
+import numpy as np
+import cv2
+import json
+import os, base64, stat, shutil
+import pdb
+import socket
+
+sys.path.append('RAFT')
+sys.path.append('RAFT/core')
+sys.path.append('RAFT/core/utils')
+from RAFT.analysis_video import *
+
+class update:
+    def __init__(self):
+        self.net, self.transform, self.ms = createNet()
+        self.updateMonitor = Moniting()
+
+    def ImageProcess(self):
+        dicts = {}
+        for root, dirs, files in os.walk(self.img_dir):
+            if len(dirs) == 0:
+                for file in files:
+                    name = file.split('.')[0].split('_')[-1]
+                    if not name in dicts:
+                        dicts[name] = [os.sep.join([root, file])]
+                    else:
+                        dicts[name] = dicts[name] + [os.sep.join([root, file])]
+        return dicts
+        
+    def updateDataCenter(self):
+        for name in os.listdir(cfg.IMG_DIR_TOTAL):
+            img = cv2.imread(os.sep.join([cfg.IMG_DIR_TOTAL, name]))
+            for an in cfg.ANGLES:
+                image = rotate_bound(img, an)
+                cv2.imwrite(os.sep.join([cfg.IMG_DIR_TOTAL, str(an)+'_'+name]), image)
+        self.updateMonitor.update(self.net, self.transform, self.ms)
+        for name in os.listdir(cfg.IMG_DIR_TOTAL):
+            os.remove(os.sep.join([cfg.IMG_DIR_TOTAL, name]))
+
+    def disposaldata(self): 
+        with open(cfg.SAMPLE, 'r', encoding='utf-8') as jsonpath:
+            loadDict = json.load(jsonpath)
+            allsample = set(loadDict['monitor'])
+        for imgname in os.listdir(cfg.TEST_IMG_DIR):
+            imgbarcode = imgname.split('.')[0].split('_')[-1]
+            if not os.path.isdir(cfg.DATA_POOLING):
+                os.mkdir(cfg.DATA_POOLING)
+            if not imgbarcode in allsample:
+#                shutil.move(
+#                    os.sep.join([cfg.TEST_IMG_DIR, imgname]),
+#                    os.sep.join([cfg.DATA_POOLING, imgname]))
+                os.remove(os.sep.join([cfg.TEST_IMG_DIR, imgname]))
+            else:
+                shutil.move(
+                    os.sep.join([cfg.TEST_IMG_DIR, imgname]),
+                    os.sep.join([cfg.SAMPLEDIR, imgname]))
+        for vname in os.listdir(cfg.VIDEOPATH):
+            os.remove(os.sep.join([cfg.VIDEOPATH, vname]))
+
+if __name__ == '__main__':
+    Update = update()
+    Update.disposaldata()
+    #Update.updateDataCenter()
diff --git a/upfile.py b/upfile.py
new file mode 100644
index 0000000..4598ba9
--- /dev/null
+++ b/upfile.py
@@ -0,0 +1,19 @@
+from utils.config import cfg
+import os
+
+obsClient = ObsClient(
+    access_key_id='LHXJC7GIC2NNUUHHTNVI',
+    secret_access_key='sVWvEItrFKWPp5DxeMvX8jLFU69iXPpzkjuMX3iM',
+    server='https://obs.cn-east-3.myhuaweicloud.com'
+)
+bucketName = 'ieemoo-ai'
+
+def addobs():
+    for name in os.listdir(cfg.temp):
+        status = name.split('_')[0]
+        if objectkey.split('.')[-1] in ['avi','mp4']:
+            objectkey = 'videos/'+time+'/'+status+'/'+name
+            resp = obsClient.putFile(bucketName, objectkey, file_path)
+if __name__ == '__main__':
+    addobs()
+
diff --git a/utils/.DS_Store b/utils/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..061ddbf368de0ef4e169ae974e287066e7c19777
GIT binary patch
literal 6148
zcmeHK%Sr=55UkN00=ewLgU9&-!9Q3+Jb2CrsEH8*3lWnDxy_%)s_9l)UGOF$bT2d2
z(~o%+>^uOZ>Hhf^XaI~^gh|SP$UNw}@L*x8eQdGD3l6x!>p(}RXwuv#Sfaxdw*0>5
zf4J{9%SE?YFrqpB5ZbQrh81?K*Ti?`cX;6HSJZacSFd>ZtDjS3CFT?i1Ovf9FmTQc
z@XVHsCx%f61HnKr@Wp`khs+{u9gAVzI#}uYEdNL-p{}=tFgv!6#gHCKvQ(m_CVyfi
zOQ$`1T<cg2Egh+j%zk|2&&Nxuqtl*iI8tjEbubVN^clFcW~1}}j=#*{Bfp;#tzaM+
zI5P&)Xf~fsxhOwde=SdEZDx67ktnW6p-}H#0@%<#a$TL~&(ay!Iu=9qB703I#zmkK
L5>+tp4-9+&v6?@<

literal 0
HcmV?d00001

diff --git a/utils/celeryconfig.py b/utils/celeryconfig.py
new file mode 100644
index 0000000..7ab8d83
--- /dev/null
+++ b/utils/celeryconfig.py
@@ -0,0 +1,4 @@
+broker_url = 'redis://127.0.0.1:6379/0'
+result_backend = 'redis://127.0.0.1:6379/1'
+includ = ['ieemoo-ai-search.ieemoo-ai-search']
+main = 'ieemoo-ai-search.ieemoo-ai-search'
diff --git a/utils/classify.py b/utils/classify.py
new file mode 100644
index 0000000..748db0e
--- /dev/null
+++ b/utils/classify.py
@@ -0,0 +1,582 @@
+# coding=utf-8
+# /usr/bin/env pythpn
+
+'''
+Author: yinhao
+Email: yinhao_x@163.com
+Wechat: xss_yinhao
+Github: http://github.com/yinhaoxs
+data: 2019-11-23 18:29
+desc:
+'''
+
+import torch.nn as nn
+import math
+import torch.utils.model_zoo as model_zoo
+from torch import nn
+import torch
+import torch.nn.functional as F
+from torch.autograd import Variable
+import cv2
+import shutil
+import numpy as np
+import pandas as pd
+from PIL import Image
+from torchvision import transforms
+from torch.utils.data import DataLoader, Dataset
+import os
+import time
+from collections import OrderedDict
+
+# config.py
+BATCH_SIZE = 16
+PROPOSAL_NUM = 6
+CAT_NUM = 4
+INPUT_SIZE = (448, 448)  # (w, h)
+DROP_OUT = 0.5
+CLASS_NUM = 37
+
+
+# resnet.py
+def conv3x3(in_planes, out_planes, stride=1):
+    "3x3 convolution with padding"
+    return nn.Conv2d(in_planes, out_planes, kernel_size=3, stride=stride,
+                     padding=1, bias=False)
+
+
+class BasicBlock(nn.Module):
+    expansion = 1
+
+    def __init__(self, inplanes, planes, stride=1, downsample=None):
+        super(BasicBlock, self).__init__()
+        self.conv1 = conv3x3(inplanes, planes, stride)
+        self.bn1 = nn.BatchNorm2d(planes)
+        self.relu = nn.ReLU(inplace=True)
+        self.conv2 = conv3x3(planes, planes)
+        self.bn2 = nn.BatchNorm2d(planes)
+        self.downsample = downsample
+        self.stride = stride
+
+    def forward(self, x):
+        residual = x
+
+        out = self.conv1(x)
+        out = self.bn1(out)
+        out = self.relu(out)
+
+        out = self.conv2(out)
+        out = self.bn2(out)
+
+        if self.downsample is not None:
+            residual = self.downsample(x)
+
+        out += residual
+        out = self.relu(out)
+
+        return out
+
+
+class Bottleneck(nn.Module):
+    expansion = 4
+
+    def __init__(self, inplanes, planes, stride=1, downsample=None):
+        super(Bottleneck, self).__init__()
+        self.conv1 = nn.Conv2d(inplanes, planes, kernel_size=1, bias=False)
+        self.bn1 = nn.BatchNorm2d(planes)
+        self.conv2 = nn.Conv2d(planes, planes, kernel_size=3, stride=stride,
+                               padding=1, bias=False)
+        self.bn2 = nn.BatchNorm2d(planes)
+        self.conv3 = nn.Conv2d(planes, planes * 4, kernel_size=1, bias=False)
+        self.bn3 = nn.BatchNorm2d(planes * 4)
+        self.relu = nn.ReLU(inplace=True)
+        self.downsample = downsample
+        self.stride = stride
+
+    def forward(self, x):
+        residual = x
+
+        out = self.conv1(x)
+        out = self.bn1(out)
+        out = self.relu(out)
+
+        out = self.conv2(out)
+        out = self.bn2(out)
+        out = self.relu(out)
+
+        out = self.conv3(out)
+        out = self.bn3(out)
+
+        if self.downsample is not None:
+            residual = self.downsample(x)
+
+        out += residual
+        out = self.relu(out)
+
+        return out
+
+
+class ResNet(nn.Module):
+    def __init__(self, block, layers, num_classes=1000):
+        self.inplanes = 64
+        super(ResNet, self).__init__()
+        self.conv1 = nn.Conv2d(3, 64, kernel_size=7, stride=2, padding=3,
+                               bias=False)
+        self.bn1 = nn.BatchNorm2d(64)
+        self.relu = nn.ReLU(inplace=True)
+        self.maxpool = nn.MaxPool2d(kernel_size=3, stride=2, padding=1)
+        self.layer1 = self._make_layer(block, 64, layers[0])
+        self.layer2 = self._make_layer(block, 128, layers[1], stride=2)
+        self.layer3 = self._make_layer(block, 256, layers[2], stride=2)
+        self.layer4 = self._make_layer(block, 512, layers[3], stride=2)
+        self.avgpool = nn.AvgPool2d(7)
+        self.fc = nn.Linear(512 * block.expansion, num_classes)
+
+        for m in self.modules():
+            if isinstance(m, nn.Conv2d):
+                n = m.kernel_size[0] * m.kernel_size[1] * m.out_channels
+                m.weight.data.normal_(0, math.sqrt(2. / n))
+            elif isinstance(m, nn.BatchNorm2d):
+                m.weight.data.fill_(1)
+                m.bias.data.zero_()
+
+    def _make_layer(self, block, planes, blocks, stride=1):
+        downsample = None
+        if stride != 1 or self.inplanes != planes * block.expansion:
+            downsample = nn.Sequential(
+                nn.Conv2d(self.inplanes, planes * block.expansion,
+                          kernel_size=1, stride=stride, bias=False),
+                nn.BatchNorm2d(planes * block.expansion),
+            )
+
+        layers = []
+        layers.append(block(self.inplanes, planes, stride, downsample))
+        self.inplanes = planes * block.expansion
+        for i in range(1, blocks):
+            layers.append(block(self.inplanes, planes))
+
+        return nn.Sequential(*layers)
+
+    def forward(self, x):
+        x = self.conv1(x)
+        x = self.bn1(x)
+        x = self.relu(x)
+        x = self.maxpool(x)
+
+        x = self.layer1(x)
+        x = self.layer2(x)
+        x = self.layer3(x)
+        x = self.layer4(x)
+        feature1 = x
+        x = self.avgpool(x)
+        x = x.view(x.size(0), -1)
+        x = nn.Dropout(p=0.5)(x)
+        feature2 = x
+        x = self.fc(x)
+
+        return x, feature1, feature2
+
+
+# model.py
+class ProposalNet(nn.Module):
+    def __init__(self):
+        super(ProposalNet, self).__init__()
+        self.down1 = nn.Conv2d(2048, 128, 3, 1, 1)
+        self.down2 = nn.Conv2d(128, 128, 3, 2, 1)
+        self.down3 = nn.Conv2d(128, 128, 3, 2, 1)
+        self.ReLU = nn.ReLU()
+        self.tidy1 = nn.Conv2d(128, 6, 1, 1, 0)
+        self.tidy2 = nn.Conv2d(128, 6, 1, 1, 0)
+        self.tidy3 = nn.Conv2d(128, 9, 1, 1, 0)
+
+    def forward(self, x):
+        batch_size = x.size(0)
+        d1 = self.ReLU(self.down1(x))
+        d2 = self.ReLU(self.down2(d1))
+        d3 = self.ReLU(self.down3(d2))
+        t1 = self.tidy1(d1).view(batch_size, -1)
+        t2 = self.tidy2(d2).view(batch_size, -1)
+        t3 = self.tidy3(d3).view(batch_size, -1)
+        return torch.cat((t1, t2, t3), dim=1)
+
+
+class AttentionNet(nn.Module):
+    def __init__(self, topN=4):
+        super(attention_net, self).__init__()
+        self.pretrained_model = ResNet(Bottleneck, [3, 4, 6, 3])
+        self.pretrained_model.avgpool = nn.AdaptiveAvgPool2d(1)
+        self.pretrained_model.fc = nn.Linear(512 * 4, 200)
+        self.proposal_net = ProposalNet()
+        self.topN = topN
+        self.concat_net = nn.Linear(2048 * (CAT_NUM + 1), 200)
+        self.partcls_net = nn.Linear(512 * 4, 200)
+        _, edge_anchors, _ = generate_default_anchor_maps()
+        self.pad_side = 224
+        self.edge_anchors = (edge_anchors + 224).astype(np.int)
+
+    def forward(self, x):
+        resnet_out, rpn_feature, feature = self.pretrained_model(x)
+        x_pad = F.pad(x, (self.pad_side, self.pad_side, self.pad_side, self.pad_side), mode='constant', value=0)
+        batch = x.size(0)
+        # we will reshape rpn to shape: batch * nb_anchor
+        rpn_score = self.proposal_net(rpn_feature.detach())
+        all_cdds = [
+            np.concatenate((x.reshape(-1, 1), self.edge_anchors.copy(), np.arange(0, len(x)).reshape(-1, 1)), axis=1)
+            for x in rpn_score.data.cpu().numpy()]
+        top_n_cdds = [hard_nms(x, topn=self.topN, iou_thresh=0.25) for x in all_cdds]
+        top_n_cdds = np.array(top_n_cdds)
+        top_n_index = top_n_cdds[:, :, -1].astype(np.int)
+        top_n_index = torch.from_numpy(top_n_index).cuda()
+        top_n_prob = torch.gather(rpn_score, dim=1, index=top_n_index)
+        part_imgs = torch.zeros([batch, self.topN, 3, 224, 224]).cuda()
+        for i in range(batch):
+            for j in range(self.topN):
+                [y0, x0, y1, x1] = top_n_cdds[i][j, 1:5].astype(np.int)
+                part_imgs[i:i + 1, j] = F.interpolate(x_pad[i:i + 1, :, y0:y1, x0:x1], size=(224, 224), mode='bilinear',
+                                                      align_corners=True)
+        part_imgs = part_imgs.view(batch * self.topN, 3, 224, 224)
+        _, _, part_features = self.pretrained_model(part_imgs.detach())
+        part_feature = part_features.view(batch, self.topN, -1)
+        part_feature = part_feature[:, :CAT_NUM, ...].contiguous()
+        part_feature = part_feature.view(batch, -1)
+        # concat_logits have the shape: B*200
+        concat_out = torch.cat([part_feature, feature], dim=1)
+        concat_logits = self.concat_net(concat_out)
+        raw_logits = resnet_out
+        # part_logits have the shape: B*N*200
+        part_logits = self.partcls_net(part_features).view(batch, self.topN, -1)
+        return [raw_logits, concat_logits, part_logits, top_n_index, top_n_prob]
+
+
+def list_loss(logits, targets):
+    temp = F.log_softmax(logits, -1)
+    loss = [-temp[i][targets[i].item()] for i in range(logits.size(0))]
+    return torch.stack(loss)
+
+
+def ranking_loss(score, targets, proposal_num=PROPOSAL_NUM):
+    loss = Variable(torch.zeros(1).cuda())
+    batch_size = score.size(0)
+    for i in range(proposal_num):
+        targets_p = (targets > targets[:, i].unsqueeze(1)).type(torch.cuda.FloatTensor)
+        pivot = score[:, i].unsqueeze(1)
+        loss_p = (1 - pivot + score) * targets_p
+        loss_p = torch.sum(F.relu(loss_p))
+        loss += loss_p
+    return loss / batch_size
+
+
+# anchors.py
+_default_anchors_setting = (
+    dict(layer='p3', stride=32, size=48, scale=[2 ** (1. / 3.), 2 ** (2. / 3.)], aspect_ratio=[0.667, 1, 1.5]),
+    dict(layer='p4', stride=64, size=96, scale=[2 ** (1. / 3.), 2 ** (2. / 3.)], aspect_ratio=[0.667, 1, 1.5]),
+    dict(layer='p5', stride=128, size=192, scale=[1, 2 ** (1. / 3.), 2 ** (2. / 3.)], aspect_ratio=[0.667, 1, 1.5]),
+)
+
+
+def generate_default_anchor_maps(anchors_setting=None, input_shape=INPUT_SIZE):
+    """
+    generate default anchor
+    :param anchors_setting: all informations of anchors
+    :param input_shape: shape of input images, e.g. (h, w)
+    :return: center_anchors: # anchors * 4 (oy, ox, h, w)
+             edge_anchors: # anchors * 4 (y0, x0, y1, x1)
+             anchor_area: # anchors * 1 (area)
+    """
+    if anchors_setting is None:
+        anchors_setting = _default_anchors_setting
+
+    center_anchors = np.zeros((0, 4), dtype=np.float32)
+    edge_anchors = np.zeros((0, 4), dtype=np.float32)
+    anchor_areas = np.zeros((0,), dtype=np.float32)
+    input_shape = np.array(input_shape, dtype=int)
+
+    for anchor_info in anchors_setting:
+
+        stride = anchor_info['stride']
+        size = anchor_info['size']
+        scales = anchor_info['scale']
+        aspect_ratios = anchor_info['aspect_ratio']
+
+        output_map_shape = np.ceil(input_shape.astype(np.float32) / stride)
+        output_map_shape = output_map_shape.astype(np.int)
+        output_shape = tuple(output_map_shape) + (4,)
+        ostart = stride / 2.
+        oy = np.arange(ostart, ostart + stride * output_shape[0], stride)
+        oy = oy.reshape(output_shape[0], 1)
+        ox = np.arange(ostart, ostart + stride * output_shape[1], stride)
+        ox = ox.reshape(1, output_shape[1])
+        center_anchor_map_template = np.zeros(output_shape, dtype=np.float32)
+        center_anchor_map_template[:, :, 0] = oy
+        center_anchor_map_template[:, :, 1] = ox
+        for scale in scales:
+            for aspect_ratio in aspect_ratios:
+                center_anchor_map = center_anchor_map_template.copy()
+                center_anchor_map[:, :, 2] = size * scale / float(aspect_ratio) ** 0.5
+                center_anchor_map[:, :, 3] = size * scale * float(aspect_ratio) ** 0.5
+
+                edge_anchor_map = np.concatenate((center_anchor_map[..., :2] - center_anchor_map[..., 2:4] / 2.,
+                                                  center_anchor_map[..., :2] + center_anchor_map[..., 2:4] / 2.),
+                                                 axis=-1)
+                anchor_area_map = center_anchor_map[..., 2] * center_anchor_map[..., 3]
+                center_anchors = np.concatenate((center_anchors, center_anchor_map.reshape(-1, 4)))
+                edge_anchors = np.concatenate((edge_anchors, edge_anchor_map.reshape(-1, 4)))
+                anchor_areas = np.concatenate((anchor_areas, anchor_area_map.reshape(-1)))
+
+    return center_anchors, edge_anchors, anchor_areas
+
+
+def hard_nms(cdds, topn=10, iou_thresh=0.25):
+    if not (type(cdds).__module__ == 'numpy' and len(cdds.shape) == 2 and cdds.shape[1] >= 5):
+        raise TypeError('edge_box_map should be N * 5+ ndarray')
+
+    cdds = cdds.copy()
+    indices = np.argsort(cdds[:, 0])
+    cdds = cdds[indices]
+    cdd_results = []
+
+    res = cdds
+
+    while res.any():
+        cdd = res[-1]
+        cdd_results.append(cdd)
+        if len(cdd_results) == topn:
+            return np.array(cdd_results)
+        res = res[:-1]
+
+        start_max = np.maximum(res[:, 1:3], cdd[1:3])
+        end_min = np.minimum(res[:, 3:5], cdd[3:5])
+        lengths = end_min - start_max
+        intersec_map = lengths[:, 0] * lengths[:, 1]
+        intersec_map[np.logical_or(lengths[:, 0] < 0, lengths[:, 1] < 0)] = 0
+        iou_map_cur = intersec_map / ((res[:, 3] - res[:, 1]) * (res[:, 4] - res[:, 2]) + (cdd[3] - cdd[1]) * (
+                cdd[4] - cdd[2]) - intersec_map)
+        res = res[iou_map_cur < iou_thresh]
+
+    return np.array(cdd_results)
+
+
+#### -------------------------------如何定义batch的读写方式-------------------------------
+# 默认读写方式
+def default_loader(path):
+    try:
+        img = Image.open(path).convert("RGB")
+        if img is not None:
+            return img
+    except:
+        print("error image:{}".format(path))
+
+
+def opencv_isvalid(img_path):
+    img_bgr = cv2.imdecode(np.fromfile(img_path, dtype=np.uint8), -1)
+    img_rgb = cv2.cvtColor(img_bgr, cv2.COLOR_BGR2RGB)
+    return img_bgr
+
+
+# 判断图片是否为无效
+def IsValidImage(img_path):
+    vaild = True
+    if img_path.endswith(".tif") or img_path.endswith(".tiff"):
+        vaild = False
+        return vaild
+    try:
+        img = opencv_isvalid(img_path)
+        if img is None:
+            vaild = False
+        return vaild
+    except:
+        vaild = False
+        return vaild
+
+
+class MyDataset(Dataset):
+    def __init__(self, dir_path, transform=None, loader=default_loader):
+        fh, imgs = list(), list()
+        num = 0
+        for root, dirs, files in os.walk(dir_path):
+            for file in files:
+                try:
+                    img_path = os.path.join(root + os.sep, file)
+                    num += 1
+                    if IsValidImage(img_path):
+                        fh.append(img_path)
+                    else:
+                        os.remove(img_path)
+
+                except:
+                    print("image is broken")
+        print("total images is:{}".format(num))
+
+        for line in fh:
+            line = line.strip()
+            imgs.append(line)
+
+        self.imgs = imgs
+        self.transform = transform
+        self.loader = loader
+
+    def __getitem__(self, item):
+        fh = self.imgs[item]
+        img = self.loader(fh)
+        if self.transform is not None:
+            img = self.transform(img)
+        return fh, img
+
+    def __len__(self):
+        return len(self.imgs)
+
+
+#### -------------------------------如何定义batch的读写方式-------------------------------
+
+
+#### -------------------------------图像模糊的定义-------------------------------
+def variance_of_laplacian(image):
+    return cv2.Laplacian(image, cv2.CV_64f).var()
+
+
+## 如何定义接口函数
+def imgQualJudge(img, QA_THRESHOLD):
+    '''
+    :param img:
+    :param QA_THRESHOLD: 越高越清晰
+    :return: 是否模糊，0为模糊，1为清晰
+    '''
+
+    norheight = 1707
+    norwidth = 1280
+    flag = 0
+    # 筛选尺寸
+    if max(img.shape[0], img.shape[1]) < 320:
+        flag = '10002'
+        return flag
+
+    # 模糊筛选部分
+    if img.shape[0] <= img.shape[1]:
+        size1 = (norheight, norwidth)
+        timage = cv2.resize(img, size1)
+    else:
+        size2 = (norwidth, norheight)
+        timage = cv2.resize(img, size2)
+
+    tgray = cv2.cvtColor(timage, cv2.COLOR_BGR2GRAY)
+    halfgray = tgray[0:int(tgray.shape[0] / 2), 0:tgray.shape[1]]
+    norgrayImg = np.zeros(halfgray.shape, np.int8)
+    cv2.normalize(halfgray, norgrayImg, 0, 255, cv2.NORM_MINMAX)
+    fm = variance_of_laplacian(norgrayImg)  # 模糊值
+    if fm < QA_THRESHOLD:
+        flag = '10001'
+        return flag
+    return flag
+
+
+def process(img_path):
+    img = Image.open(img_path).convert("RGB")
+    valid = True
+    low_quality = "10001"
+    size_error = "10002"
+
+    flag = imgQualJudge(np.array(img), 5)
+    if flag == low_quality or flag == size_error or not img or 0 in np.asarray(img).shape[:2]:
+        valid = False
+
+    return valid
+
+
+#### -------------------------------图像模糊的定义-------------------------------
+
+def build_dict():
+    dict_club = dict()
+    dict_club[0] = ["身份证", 0.999999]
+    dict_club[1] = ["校园卡", 0.890876]
+    return dict_club
+
+
+class Classifier():
+    def __init__(self):
+        self.device = torch.device('cuda')
+        self.class_id_name_dict = build_dict()
+        self.mean = [0.485, 0.456, 0.406]
+        self.std = [0.229, 0.224, 0.225]
+        self.input_size = 448
+        self.use_cuda = torch.cuda.is_available()
+        self.model = AttentionNet(topN=4)
+        self.model.eval()
+
+        checkpoint = torch.load("./.ckpt")
+        newweights = checkpoint['net_state_dict']
+
+        # 多卡测试转为单卡
+        new_state_dic = OrderedDict()
+        for k, v in newweights.items():
+            name = k[7:] if k.startwith("module.") else k
+            new_state_dic[name] = v
+
+        self.model.load_state_dict(new_state_dic)
+        self.model = self.model.to(self.device)
+
+    def evalute(self, dir_path):
+        data = MyDataset(dir_path, transform=self.preprocess)
+        dataloader = DataLoader(dataset=data, batch_size=32, num_workers=8)
+
+        self.model.eval()
+        with torch.no_grad():
+            num = 0
+            for i, (data, path) in enumerate(dataloader, 1):
+                data = data.to(self.device)
+                output = self.model(data)
+                for j in range(len(data)):
+                    img_path = path[j]
+                    img_output = output[1][j]
+                    score, label, type = self.postprocess(img_output)
+                    out_dict, score = self.process(score, label, type)
+                    class_id = out_dict["results"]["class2"]["code"]
+                    num += 1
+                    if class_id != '00038':
+                        os.remove(img_path)
+                    else:
+                        continue
+
+    def preprocess(self, img):
+        img = transforms.Resize((600, 600), Image.BILINEAR)(img)
+        img = transforms.CenterCrop(self.input_size)(img)
+        img = transforms.ToTensor()(img)
+        img = transforms.Normalize(self.mean, self.std)
+
+    def postprocess(self, output):
+        pred_logits = F.softmax(output, dim=0)
+        score, label = pred_logits.max(0)
+        score = score.item()
+        label = label.item()
+        type = self.class_id_name_dict[label][0]
+        return score, label, type
+
+    def process(self, score, label, type):
+        success_code = "200"
+        lower_conf_code = "10008"
+
+        threshold = float(self.class_id_name_dict[label][1])
+        if threshold > 0.99:
+            threshold = 0.99
+        if threshold < 0.9:
+            threshold = 0.9
+        ## 设置查勘图片较低的阈值
+        if label == 38:
+            threshold = 0.5
+
+        if score > threshold:
+            status_code = success_code
+            pred_label = str(label).zfill(5)
+            print("pred_label:", pred_label)
+            return {"code:": status_code, "message": '图像分类成功',
+                    "results": {"class2": {'code': pred_label, 'name': type}}}, score
+        else:
+            status_code = lower_conf_code
+            return {"code:": status_code, "message": '图像分类置信度低，不返回结果',
+                    "results": {"class2": {'code': '', 'name': ''}}}, score
+
+
+def class_results(img_dir):
+    Classifier().evalute(img_dir)
+
+
+if __name__ == "__main__":
+    pass
diff --git a/utils/config.py b/utils/config.py
new file mode 100644
index 0000000..92f52b1
--- /dev/null
+++ b/utils/config.py
@@ -0,0 +1,59 @@
+from yacs.config import CfgNode as CfgNode 
+_C = CfgNode()
+cfg = _C
+
+_C.RESIZE = 648
+
+#Monitoring table of commodity identification System
+_C.MONITORPATH = '../module/ieemoo-ai-search/model/now/monitor.json'
+
+_C.VIDEOPATH = '../module/ieemoo-ai-search/videos'
+
+#The number of results retrieved
+_C.NUM_RESULT = 5
+
+#RAFT  img numbers
+_C.NUM_RAFT = 10#6 #real nu: nu-1
+
+#Path for storing video images
+_C.TEST_IMG_DIR = '../module/ieemoo-ai-search/imgs'
+_C.ORIIMG = '../module/ieemoo-ai-search/imgs'
+
+_C.Tempimg = '../module/ieemoo-ai-search/data'#扫码商品展示
+_C.Tempvideos = '../module/ieemoo-ai-search/tempvideos'#扫码商品展示
+
+_C.DIM = 2048
+_C.flag = False
+
+#angle of rotation 
+_C.ANGLES = [45,90,270,315] #45,90,135,180,225,270,315
+
+#Weight of feature extraction
+#_C.NETWORK = '../../module/ieemoo-ai-search/model/now/model_best.pth' #retrieval_feature 测试
+_C.NETWORK = '../module/ieemoo-ai-search/model/now/model_best.pth'
+
+#Weight of RAFT
+_C.RAFTMODEL= '../module/ieemoo-ai-search/model/now/raft-things.pth'
+
+_C.DEVICE = 0
+
+#Similarity threshold
+_C.THRESHOLD = 0.9
+
+#mask img
+_C.MASKIMG = '../module/ieemoo-ai-search/model/now/masking.jpg'
+_C.MASKIMG_old = '../module/ieemoo-ai-search/model/now/masking_old.jpg'
+
+#fgbg mask img
+_C.fgbgmask = '../module/ieemoo-ai-search/model/now/ori.jpg'
+_C.fgbgmask_old = '../module/ieemoo-ai-search/model/now/ori_old.jpg'
+
+_C.URL = 'https://api.ieemoo.com/emoo-api/intelligence'  #online
+#_C.URL = 'http://api.test.ieemoo.com/emoo-api/intelligence'
+
+_C.Vre = 'http://api.test.ieemoo.com/emoo-api/intelligence/queryVideoCompareResult.do'
+#_C.Vre = 'http://192.168.1.98:8088/emoo-api/intelligence/queryVideoCompareResult.do'
+
+_C.Ocrimg = '../module/ieemoo-ai-ocr/imgs'#post ocr img
+_C.Ocrtxt = '../module/ieemoo-ai-ocr/document'#post ocr txts
+_C.Ocrvideo = '../module/ieemoo-ai-ocr/videos'#post ocr video
diff --git a/utils/forsegmentation.py b/utils/forsegmentation.py
new file mode 100644
index 0000000..b522965
--- /dev/null
+++ b/utils/forsegmentation.py
@@ -0,0 +1,121 @@
+import requests
+from base64 import b64encode
+from json import dumps
+import os
+import cv2
+import numpy as np
+import pdb
+max_nu_area= 0
+
+def get_object_mask(frame, ori_mask, mask_path, all_nu, result_path):
+    global max_nu_area
+    maskimg = cv2.imread(mask_path, 0)
+    kernel = np.ones((5, 5), np.uint8)
+    dst = ori_mask
+    dst = cv2.erode(dst, kernel)
+    dst = cv2.dilate(dst, kernel)
+    dst = cv2.medianBlur(dst,3)
+    if (cv2.__version__).split('.')[0] == '3':
+        _, contours, _ = cv2.findContours(dst, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE)
+    else:
+        contours, _ = cv2.findContours(dst, cv2.RETR_TREE, cv2.CHAIN_APPROX_NONE)
+    area,mask_area = 0,0
+    if len(contours) == 1 or len(contours) == 0:
+        return None
+    for contour in contours:
+        area_now = cv2.contourArea(contour)
+        dst = cv2.fillPoly(dst, [contour], (0))
+        if area_now > area:
+            area = area_now
+            Matrix = contour
+            max_area = area_now
+    if max_area > max_nu_area:
+        max_nu_area = max_area #维护最大的五个
+        flag = False
+    else:flag = True
+    (x, y, w, h) = cv2.boundingRect(Matrix)
+    dst = cv2.fillPoly(dst, [Matrix], (255))
+    coordination = [x, y, x + w, y + h]
+    if max_area/(w*h)<0.3:
+        return None
+    #print('masking', maskimg.shape)
+    #print('dst', dst.shape)
+    #pdb.set_trace()
+    mask_dst = cv2.bitwise_and(maskimg, dst)
+    if w < 350 or h <350:
+        return None
+    if (cv2.__version__).split('.')[0] == '3':
+        _, contours, _ = cv2.findContours(mask_dst, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE)
+    else:
+        contours, _ = cv2.findContours(mask_dst, cv2.RETR_TREE, cv2.CHAIN_APPROX_NONE)
+    for contour in contours:
+        mask_area_now = cv2.contourArea(contour)
+        if mask_area_now > mask_area:
+            mask_area = mask_area_now
+    proportion = float(mask_area/max_area)
+    if proportion<1.05 and proportion>0.5:
+        #print(coordination)
+        A,B,C = mask_dst, mask_dst, mask_dst
+        mask_dst = cv2.merge([A,B,C])
+        img = cv2.bitwise_and(mask_dst, frame)
+        img = img[coordination[1]:coordination[3],coordination[0]:coordination[2]]
+        frame = frame[coordination[1]:coordination[3],coordination[0]:coordination[2]]
+        #cv2.imshow('dst',img)
+        #cv2.waitKey(1000)
+        #print(all_nu)
+        #if all_nu>4: return 'True'
+        ratio = (w/h if h>w else h/w)
+        if ratio<0.5:
+            return None
+        if all_nu<5:
+            savenu = all_nu
+        elif all_nu>=5 and not(flag):
+            savenu = all_nu%5
+            print(savenu)
+        else:
+            return 'True'
+        cv2.imwrite('images/' + str(savenu)+'.jpg', img)
+        cv2.imwrite('images/' + 'ori'+ str(savenu)+'.jpg', frame)
+        #cv2.imwrite(os.sep.join([result_path, str(all_nu)+'.jpg']), img)
+        return 'con'
+    else:
+        return None
+
+
+def get_object_location(file_test, mask_path,result_path):
+    cap = cv2.VideoCapture(file_test)
+    kernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (3, 3))
+    fgbg = cv2.createBackgroundSubtractorMOG2(detectShadows = False)#高斯混合模型为基础背景
+    nu= 10
+    working_nu = 0
+    while True:
+        ret, frame = cap.read()
+        if not ret:
+            break
+        frame = cv2.medianBlur(frame, ksize=3)
+        frame_motion = frame.copy()
+        fgmask = fgbg.apply(frame_motion)
+        mask= cv2.threshold(fgmask, 25, 255, cv2.THRESH_BINARY)[1]  # 二值化
+        mask = cv2.dilate(mask, kernel, iterations=1)
+        if nu<=30:
+            res = get_object_mask(frame, mask, mask_path, working_nu, result_path)
+            #print(res)
+            if res=='True':
+                break
+            elif res == 'con':
+                working_nu+=1
+            else: continue
+        else:break
+        nu+=1
+
+def analysis(file_test, mask_path, result_path):
+    #mask_path = 'mask.jpg'
+    #result_path = 'result'
+    if not (os.path.exists(result_path)):
+        os.mkdir(result_path)
+    get_object_location(file_test, mask_path, result_path)
+if __name__ == '__main__':
+    mask_path = 'mask2.jpg'
+    result_path = 'images'
+    file_test = "ftp/anonymous/20210908-150524_e8e24395-fc7b-42f2-a50a-068c4ac73ee9_6921168509256.mp4"
+    analysis(file_test, mask_path, result_path)
diff --git a/utils/logging.json b/utils/logging.json
new file mode 100644
index 0000000..ceceea9
--- /dev/null
+++ b/utils/logging.json
@@ -0,0 +1,45 @@
+{
+    "version":1,
+    "disable_existing_loggers":false,
+    "formatters":{  
+        "simple":{
+            "format":"%(asctime)s - %(module)s - %(thread)d - %(levelname)s : %(message)s"
+        }
+    },
+    "handlers":{
+        "console":{
+            "class":"logging.StreamHandler",
+            "level":"DEBUG",
+            "formatter":"simple",
+            "stream":"ext://sys.stdout"
+        },
+        "info_file_handler":{
+            "class":"logging.handlers.RotatingFileHandler",
+            "level":"INFO",
+            "formatter":"simple", 
+            "filename":"../log/ieemoo-ai-search-biz.log", 
+            "maxBytes":10485760,
+            "backupCount":20,
+            "encoding":"utf8"
+        },
+        "error_file_handler":{  
+            "class":"logging.handlers.RotatingFileHandler",
+            "level":"ERROR",
+            "formatter":"simple",
+            "filename":"../log/ieemoo-ai-search-biz.log",
+            "maxBytes":10485760,
+            "backupCount":20,
+            "encoding":"utf8"
+	}
+    },
+    "loggers":{
+	    "my_module":{
+		    "level":"ERROR",
+		    "handlers":["info_file_handler"],
+		    "propagate":"no"}
+    },  
+    "root":{
+	    "level":"INFO",
+	    "handlers":["console","info_file_handler","error_file_handler"]
+    }
+} 
diff --git a/utils/monitor.py b/utils/monitor.py
new file mode 100644
index 0000000..51f5878
--- /dev/null
+++ b/utils/monitor.py
@@ -0,0 +1,61 @@
+import os
+import json
+import h5py
+import numpy as np
+from utils.config import cfg
+from cirtorch.networks.imageretrievalnet import init_network, extract_vectors
+from utils.tools import createNet,ManagingFeature 
+
+class Moniting:
+    def __init__(self, barcode = ''):
+        self.barcode = barcode
+        self.jsonpath = cfg.MONITORPATH
+        self.MF = ManagingFeature()
+        if not os.path.exists(self.jsonpath):
+            jsontext = {"monitor":[]}
+            jsondata = json.dumps(jsontext)
+            f = open(self.jsonpath, 'w+', encoding='utf-8')
+            f.write(jsondata)
+            f.close()
+
+    def add(self):
+        with open(self.jsonpath, 'r', encoding='utf-8') as add_f:
+            jsonfile = json.load(add_f)
+        add_f.close()
+        data = list(set(jsonfile['monitor']+self.barcode))
+        jsonfile['monitor'] = data
+        with open(self.jsonpath, 'w') as add_f:
+            json.dump(jsonfile, add_f)
+        add_f.close()
+
+    def search(self):
+        with open(self.jsonpath, 'r', encoding='utf-8') as f:
+            jsonfile = json.load(f)
+            f.close()
+        data = set(jsonfile['monitor'])
+        if self.barcode in data:
+            return 'success'
+        else:
+            return 'nomatch'
+
+    def update(self, net, transform, ms):#update monitor.json
+        Dict = {}
+        path = []
+        collectbarcode = set()
+        for name in os.listdir(cfg.IMG_DIR_TOTAL):
+            barcode = name.split('_')[-1].split('.')[0]
+            path.append(os.sep.join([cfg.IMG_DIR_TOTAL, name]))
+            collectbarcode.add(barcode)
+        vecs, img_paths = extract_vectors(net, path, cfg.RESIZE, transform, ms=ms)
+        data = list(vecs.detach().cpu().numpy().T)
+        for code, feature in zip(img_paths, data):
+            barcode = code.split('_')[-1].split('.')[0]
+            feature = feature.tolist()
+            self.MF.addfeature(barcode, feature)
+        Moniting(list(collectbarcode)).add()
+
+if __name__ == '__main__':
+    barcode = '1'
+    mo = Moniting(barcode)
+    print(mo.search())
+    mo.add(barcode)
diff --git a/utils/retrieval_feature.py b/utils/retrieval_feature.py
new file mode 100644
index 0000000..5766318
--- /dev/null
+++ b/utils/retrieval_feature.py
@@ -0,0 +1,71 @@
+# coding=utf-8
+# /usr/bin/env pythpn
+
+import sys
+sys.path.append('..')
+import os
+from PIL import Image
+from cirtorch.networks.imageretrievalnet import extract_vectors, extract_vectors_o
+from utils.config import cfg
+from utils.monitor import Moniting
+import cv2 as cv
+# setting up the visible GPU
+os.environ['CUDA_VISIBLE_DEVICES'] = "0"
+
+class ImageProcess():
+    def __init__(self, img_dir):
+        self.img_dir = img_dir
+
+    def process(self, uuid_barcode):
+        imgs = list()
+        nu = 0
+        for root, dirs, files in os.walk(self.img_dir):
+            for file in files:
+                img_path = os.path.join(root + os.sep, file)
+                try:
+                    image = Image.open(img_path)
+                    if max(image.size) / min(image.size) < 5:
+                        if uuid_barcode == None:
+                           imgs.append(img_path)
+                           print('\r>>>> {}/{} Train done...'.format((nu + 1), 
+                               len(os.listdir(self.img_dir))), 
+                               end='')
+                           nu+=1
+                        else:
+                            if uuid_barcode in img_path:
+                                imgs.append(img_path)
+                except:
+                    print("image height/width ratio is small")
+        return imgs
+
+class AntiFraudFeatureDataset():
+    def __init__(self, uuid_barcode=None, test_img_dir=cfg.TEST_IMG_DIR):#, model='work'):
+        self.uuid_barcode = uuid_barcode
+        self.TestImgDir = test_img_dir
+        #self.model = model
+
+    def extractFeature_o(self, net, image, transform, ms):
+        size = cfg.RESIZE
+        #image = cv.resize(image, (size, size))
+        vecs = extract_vectors_o(net, image, size,transform, ms=ms)
+        feature_dict = list(vecs.detach().cpu().numpy().T)
+        return feature_dict
+
+    def extractFeature(self, net, transform, ms):
+        # extract database and query vectors
+        print('>> database images...')
+        images = ImageProcess(self.TestImgDir).process(self.uuid_barcode)
+        #print('ori', images)
+        vecs, img_paths = extract_vectors( net, images, cfg.RESIZE, transform, ms=ms)
+        feature_dict = list(vecs.detach().cpu().numpy().T)
+        return feature_dict
+
+if __name__ == '__main__':
+    from utils.tools import createNet
+    net, transform, ms = createNet()
+    path = '../data/imgs/1.jpg'
+    image = cv.imread(path)
+    affd = AntiFraudFeatureDataset()
+    feature = affd.extractFeature_o(net, image, transform, ms)
+    print(len(feature))
+
diff --git a/utils/tools.py b/utils/tools.py
new file mode 100644
index 0000000..2bcac44
--- /dev/null
+++ b/utils/tools.py
@@ -0,0 +1,124 @@
+#from config import cfg
+from utils.config import cfg
+from cirtorch.networks.imageretrievalnet import init_network, extract_vectors
+import torch
+from torchvision import transforms
+import cv2
+import numpy as np
+import requests
+import os, scipy, math
+import http.client
+#http.client.HTTPConnection._http_vsn = 10
+#http.client.HTTPConnection._http_vsn_str = 'HTTP/1.0'
+
+def rotate_bound(image, angle): #ratio
+    (h, w) = image.shape[:2]
+    (cX, cY) = (w // 2, h // 2)
+    M = cv2.getRotationMatrix2D((cX, cY), -angle, 1.0)
+    cos = np.abs(M[0, 0])
+    sin = np.abs(M[0, 1])
+    nW = int((h * sin) + (w * cos))
+    nH = int((h * cos) + (w * sin))
+    M[0, 2] += (nW / 2) - cX
+    M[1, 2] += (nH / 2) - cY
+    return cv2.warpAffine(image, M, (nW, nH))
+
+def createNet(): #load model
+    multiscale = '[1]'
+    print(">> Loading network:\n>>>> '{}'".format(cfg.NETWORK))
+    state = torch.load(cfg.NETWORK)
+    net_params = {}
+    net_params['architecture'] = state['meta']['architecture']
+    net_params['pooling'] = state['meta']['pooling']
+    net_params['local_whitening'] = state['meta'].get('local_whitening', False)
+    net_params['regional'] = state['meta'].get('regional', False)
+    net_params['whitening'] = state['meta'].get('whitening', False)
+    net_params['mean'] = state['meta']['mean']
+    net_params['std'] = state['meta']['std']
+    net_params['pretrained'] = False
+    net = init_network(net_params)
+    net.load_state_dict(state['state_dict'])
+    print(">>>> loaded network: ")
+    print(net.meta_repr())
+    ms = list(eval(multiscale))
+    print(">>>> Evaluating scales: {}".format(ms))
+    if torch.cuda.is_available():
+        net.cuda()
+    net.eval()
+    normalize = transforms.Normalize(
+        mean=net.meta['mean'],
+        std=net.meta['std']
+    )
+    transform = transforms.Compose([
+        transforms.ToTensor(),
+        normalize
+    ])
+    return net, transform, ms
+
+class ManagingFeature: #特征增删改查
+    def __init__(self):
+        pass
+
+    def addfeature(self, code, feature):
+        url = os.sep.join([cfg.URL, 'addImageFeatureInfo.do'])
+        json = {'code':code,
+                'featureVal':feature}
+        r = requests.post(url=url, data=json)
+        return r.text
+    
+    def deletefeature(self, code, timeStamp): #eg: "timeStamp":"2022/02/10 17:59:59"
+        url = os.sep.join([cfg.URL, 'deletImageFeatureInfo.do'])
+        json = {'code':code,
+                'timeStamp':timeStamp}
+        r = requests.get(url=url, params=json)
+        return r.json
+
+    def getfeature(self, code):
+        try:
+            url = os.sep.join([cfg.URL, 'getImageFeatureInfo.do'])
+            json = {'code': code}
+            r = requests.get(url=url, params=json)
+            data = r.json()['data']
+            return data
+        except Exception as e:
+            print('>>>>>get feature error<<<<<<')
+
+class EvaluteMap():
+    def __init__(self):
+        self.MF = ManagingFeature()
+
+    def match_feature(self, features, search_r):
+        alldict = []
+        #search_r = self.MF.getfeature(barcode)
+        for feature in features:
+            for r in search_r:
+                dist = np.linalg.norm(feature - r)
+                #alldict.append(math.pow(dist, 2))
+                alldict.append(dist)
+        meandist = scipy.mean(sorted(alldict)[0:5])
+        return meandist
+
+    def match_feature_single(self, feature, search_r):
+        alldict = []
+        for r in search_r:
+            r = np.array(r)
+            feature = np.array(feature)
+            dist = np.linalg.norm(feature-r)
+            alldict.append(dist)
+        meandist = scipy.mean(sorted(alldict)[0:2])
+        return meandist
+
+    def match_images(self, feature_dict, barcode, choose = False, mod = 'batch'):
+        if mod == 'batch':
+            result = self.match_feature(feature_dict, barcode)
+            return result
+        else:
+            result = self.match_feature_single(feature_dict, barcode)
+            return result
+
+if __name__ == '__main__':
+    pass
+#    MF = ManagingFeature()
+#    result = MF.getfeature('7613035075443')
+#    print(result)
+
diff --git a/utils/updateObs.py b/utils/updateObs.py
new file mode 100644
index 0000000..99ae3b7
--- /dev/null
+++ b/utils/updateObs.py
@@ -0,0 +1,71 @@
+from obs import ObsClient
+from datetime import datetime
+#from config import cfg
+from utils.config import cfg
+import os,threading
+import time as ti
+import base64,requests,cv2,shutil
+lock = threading.Lock()
+obsClient = ObsClient(
+    access_key_id='LHXJC7GIC2NNUUHHTNVI',
+    secret_access_key='sVWvEItrFKWPp5DxeMvX8jLFU69iXPpzkjuMX3iM',
+    server='https://obs.cn-east-3.myhuaweicloud.com'
+)
+bucketName = 'ieemoo-ai'
+
+def AddObs(file_path, status):
+    with lock:
+        if not cfg.flag:
+            addobs(file_path, status)
+        else:
+            if status == '02':
+                addobs(file_path, status)
+            else:
+                objectkey = os.path.basename(file_path)
+                f_dist = os.sep.join([cfg.tempvideos, status+'_'+objectkey])
+                shutil.move(file_path, f_dst)
+
+def addobs(file_path, status): #save videos
+    ti.sleep(5)
+    videoUuid = os.path.basename(file_path).split('_')[1]
+    json_data = {'videoUuid': videoUuid}
+    resp = requests.post(url=cfg.Vre,
+                        data=json_data)
+    status = resp.json()
+    try:
+        status = status['data']
+    except Exception as e:
+        ti.sleep(5)
+        resp = requests.post(url=cfg.Vre,data=json_data)
+        status = resp.json()
+        status = status['data']
+
+    objectkey = os.path.basename(file_path)
+    time = os.path.basename(file_path).split('-')[0]
+    if objectkey.split('.')[-1] in ['avi','mp4']:
+        objectkey = 'videos/'+time+'/'+status+'/'+status+'_'+objectkey
+        resp = obsClient.putFile(bucketName, objectkey, file_path)
+    os.remove(file_path)
+
+def Addimg(uuid_barcode):
+    time = uuid_barcode.split('-')[0].split('_')[-1]
+    objectkey = 'imgs/'+time+'/'+uuid_barcode+'.jpg'
+    file_path = os.sep.join([cfg.Tempimg, '5_'+uuid_barcode+'.jpg'])
+    if not os.path.exists(file_path):
+        file_path = os.sep.join([cfg.Tempimg, '3_'+uuid_barcode+'.jpg'])
+    if not os.path.exists(file_path):
+        file_path = os.sep.join([cfg.Tempimg, 'ex_'+uuid_barcode+'.jpg'])
+    resp = obsClient.putFile(bucketName, objectkey, file_path)
+
+def Addimg_content(uuid_barcode, context):
+    success, encoded_image = cv2.imencode(".jpg",context)
+    context = encoded_image.tobytes()
+    time = uuid_barcode.split('-')[0]
+    objectkey = 'imgs/'+time+'/'+uuid_barcode+'.jpg'
+    resp = obsClient.putContent(bucketName, objectkey, context)
+
+if __name__ == '__main__':
+    import cv2
+    context = cv2.imread('/home/lc/project/ieemoo-ai-search/data/imgs/20230625-094651_37dd99b0-520d-457b-8615-efdb7f53b5b4_6907992825762.jpg')
+    uuid_barcode = '20230625-094651_37dd99b0-520d-457b-8615-efdb7f53b5b4'
+    Addimg_content(uuid_barcode, context)