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diff --git a/06_argparser/submissions/fu784.py b/06_argparser/submissions/fu784.py
new file mode 100644
index 0000000..6304b9b
--- /dev/null
+++ b/06_argparser/submissions/fu784.py
@@ -0,0 +1,37 @@
+import numpy as np
+
+
+def afunc(array1, array2, mode="+", pow=2):
+    assert array1.shape == array2.shape, "size mismatch"
+    assert type(pow) == int, "pow should be type int"
+
+    if mode == "+":
+        result = array1 + array2
+    elif mode == "-":
+        result = array1 - array2
+    else:
+        raise ValueError(f"mode is either '+' or '-' but got {mode}")
+
+    result = result ** pow
+    return result
+
+
+if __name__ == "__main__":
+    import argparse
+
+    parser = argparse.ArgumentParser(description="This is tutorial for argparse.")
+    # add your code here
+    parser.add_argument("mode", type=str, help="the calculation mode")
+    parser.add_argument("pow", type=int, help="the power number used in calculation")
+    parser.add_argument("--print_hello", action="store_true", help="print 'Hello'")
+
+    # add your code here
+    args = parser.parse_args()
+    print(args)
+
+    a = np.array([1, 2, 3])
+    b = np.array([4, 5, 6])
+    result = afunc(a, b, args.mode, args.pow)
+    print(result)
+    if args.print_hello:
+        print("Hello!")
diff --git a/10_3d_pointcloud/submissions/fu.784.txt b/10_3d_pointcloud/submissions/fu.784.txt
new file mode 100644
index 0000000..0364c03
--- /dev/null
+++ b/10_3d_pointcloud/submissions/fu.784.txt
@@ -0,0 +1,29 @@
+No CUDA runtime is found, using CUDA_HOME='/usr/local/cuda'
+---------------------  -------------------------------------------------------------------------------------------
+sys.platform           linux
+Python                 3.8.13 (default, Mar 28 2022, 11:38:47) [GCC 7.5.0]
+numpy                  1.23.1
+detectron2             0.6 @/users/PAS2099/wenjin/CSE5916/detectron2/detectron2
+Compiler               GCC 8.4
+CUDA compiler          not available
+DETECTRON2_ENV_MODULE  <not set>
+PyTorch                1.12.1 @/users/PAS2099/wenjin/miniconda3/envs/py3.8/lib/python3.8/site-packages/torch
+PyTorch debug build    False
+GPU available          No: torch.cuda.is_available() == False
+Pillow                 9.2.0
+torchvision            0.13.1 @/users/PAS2099/wenjin/miniconda3/envs/py3.8/lib/python3.8/site-packages/torchvision
+fvcore                 0.1.5.post20220512
+iopath                 0.1.9
+cv2                    Not found
+---------------------  -------------------------------------------------------------------------------------------
+PyTorch built with:
+  - GCC 7.3
+  - C++ Version: 201402
+  - Intel(R) oneAPI Math Kernel Library Version 2021.4-Product Build 20210904 for Intel(R) 64 architecture applications
+  - Intel(R) MKL-DNN v2.6.0 (Git Hash 52b5f107dd9cf10910aaa19cb47f3abf9b349815)
+  - OpenMP 201511 (a.k.a. OpenMP 4.5)
+  - LAPACK is enabled (usually provided by MKL)
+  - NNPACK is enabled
+  - CPU capability usage: AVX2
+  - Build settings: BLAS_INFO=mkl, BUILD_TYPE=Release, CUDA_VERSION=10.2, CUDNN_VERSION=7.6.5, CXX_COMPILER=/opt/rh/devtoolset-7/root/usr/bin/c++, CXX_FLAGS= -fabi-version=11 -Wno-deprecated -fvisibility-inlines-hidden -DUSE_PTHREADPOOL -fopenmp -DNDEBUG -DUSE_KINETO -DUSE_FBGEMM -DUSE_QNNPACK -DUSE_PYTORCH_QNNPACK -DUSE_XNNPACK -DSYMBOLICATE_MOBILE_DEBUG_HANDLE -DEDGE_PROFILER_USE_KINETO -O2 -fPIC -Wno-narrowing -Wall -Wextra -Werror=return-type -Wno-missing-field-initializers -Wno-type-limits -Wno-array-bounds -Wno-unknown-pragmas -Wno-unused-parameter -Wno-unused-function -Wno-unused-result -Wno-unused-local-typedefs -Wno-strict-overflow -Wno-strict-aliasing -Wno-error=deprecated-declarations -Wno-stringop-overflow -Wno-psabi -Wno-error=pedantic -Wno-error=redundant-decls -Wno-error=old-style-cast -fdiagnostics-color=always -faligned-new -Wno-unused-but-set-variable -Wno-maybe-uninitialized -fno-math-errno -fno-trapping-math -Werror=format -Wno-stringop-overflow, LAPACK_INFO=mkl, PERF_WITH_AVX=1, PERF_WITH_AVX2=1, PERF_WITH_AVX512=1, TORCH_VERSION=1.12.1, USE_CUDA=ON, USE_CUDNN=ON, USE_EXCEPTION_PTR=1, USE_GFLAGS=OFF, USE_GLOG=OFF, USE_MKL=ON, USE_MKLDNN=OFF, USE_MPI=OFF, USE_NCCL=ON, USE_NNPACK=ON, USE_OPENMP=ON, USE_ROCM=OFF, 
+
diff --git a/detectron2 b/detectron2
new file mode 160000
index 0000000..717ab9f
--- /dev/null
+++ b/detectron2
@@ -0,0 +1 @@
+Subproject commit 717ab9f0aeca216a2f800e43d705766251ba3a55