diff --git a/.gitmodules b/.gitmodules
index 406e26d595e1e5490866f92cfcb40ebe27cc9c55..f041c6f546521cfd74d70b80b96104565a0e5c4f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -40,3 +40,6 @@
 [submodule "third_party/cutlass"]
 	path = third_party/cutlass
 	url = https://github.com/MegEngine/cutlass.git
+[submodule "third_party/range-v3"]
+	path = third_party/range-v3
+	url = https://github.com/ericniebler/range-v3.git
diff --git a/ACKNOWLEDGMENTS b/ACKNOWLEDGMENTS
index addbf8fce322eed4410c16f88963539bce53c07c..ec1b987e36b117d81fa4f9760a4e53009d947516 100644
--- a/ACKNOWLEDGMENTS
+++ b/ACKNOWLEDGMENTS
@@ -2288,3 +2288,71 @@ 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.
 *********************************************************************************************************************************
+==============================================================================
+libc++ License
+==============================================================================
+Copyright (c) 2009-2014 by the contributors listed in CREDITS.TXT
+  http://llvm.org/svn/llvm-project/libcxx/trunk/CREDITS.TXT
+
+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 the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+==============================================================================
+Stepanov and McJones, "Elements of Programming" license
+==============================================================================
+
+// Copyright (c) 2009 Alexander Stepanov and Paul McJones
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without
+// fee, provided that the above copyright notice appear in all copies
+// and that both that copyright notice and this permission notice
+// appear in supporting documentation. The authors make no
+// representations about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+//
+// Algorithms from
+// Elements of Programming
+// by Alexander Stepanov and Paul McJones
+// Addison-Wesley Professional, 2009
+
+==============================================================================
+SGI C++ Standard Template Library license
+==============================================================================
+
+// Copyright (c) 1994
+// Hewlett-Packard Company
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without fee,
+// provided that the above copyright notice appear in all copies and
+// that both that copyright notice and this permission notice appear
+// in supporting documentation.  Hewlett-Packard Company makes no
+// representations about the suitability of this software for any
+// purpose.  It is provided "as is" without express or implied warranty.
+//
+// Copyright (c) 1996
+// Silicon Graphics Computer Systems, Inc.
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without fee,
+// provided that the above copyright notice appear in all copies and
+// that both that copyright notice and this permission notice appear
+// in supporting documentation.  Silicon Graphics makes no
+// representations about the suitability of this software for any
+// purpose.  It is provided "as is" without express or implied warranty.
diff --git a/imperative/CMakeLists.txt b/imperative/CMakeLists.txt
index e6c613a04508284afe537098c39f8089ee72a2c2..8f3759708df9713f6c2a811e57b564013ea9a069 100644
--- a/imperative/CMakeLists.txt
+++ b/imperative/CMakeLists.txt
@@ -46,6 +46,9 @@ else()
     endif()
 endif()
 
+add_subdirectory(${PROJECT_SOURCE_DIR}/third_party/range-v3 ${PROJECT_BINARY_DIR}/third_party/range-v3)
+target_link_libraries(${MODULE_NAME} PRIVATE range-v3)
+
 target_include_directories(${MODULE_NAME} PUBLIC src/include PRIVATE ${PYTHON_INCLUDE_DIRS} ${NUMPY_INCLUDE_DIR} ${MGB_OPDEF_OUT_DIR})
 target_compile_definitions(${MODULE_NAME} PRIVATE MODULE_NAME=${MODULE_NAME})
 target_compile_options(${MODULE_NAME} PRIVATE -Wno-unused-parameter)
@@ -77,4 +80,3 @@ add_custom_command(
     COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/python/requires-style.txt ${CMAKE_CURRENT_BINARY_DIR}/python/requires-style.txt
     COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/python/requires-test.txt ${CMAKE_CURRENT_BINARY_DIR}/python/requires-test.txt
 )
-
diff --git a/imperative/test/CMakeLists.txt b/imperative/test/CMakeLists.txt
index 03a92575ffb6ca707a207b037101b9fc534b3c75..52aec90d40fb80f26f004aa39ec2659ce8b01403 100644
--- a/imperative/test/CMakeLists.txt
+++ b/imperative/test/CMakeLists.txt
@@ -18,7 +18,7 @@ target_include_directories(imperative_test PRIVATE ${MODULE_SRC_INCLUDE} ${PYTHO
 target_compile_definitions(imperative_test PRIVATE MODULE_NAME=C)
 target_compile_options(imperative_test PRIVATE -Wno-unused-parameter)
 
-set(LINK_LIBS megbrain megdnn gtest gmock pybind11::embed)
+set(LINK_LIBS megbrain megdnn gtest gmock pybind11::embed range-v3)
 if(MGE_WITH_CUDA)
     list(APPEND LINK_LIBS cudart)
 endif()
diff --git a/third_party/prepare.sh b/third_party/prepare.sh
index 25a02dab714799c759bb5d1535740ebf53a73a55..7b01f6d50841d71af935765190b9e753a42807b1 100755
--- a/third_party/prepare.sh
+++ b/third_party/prepare.sh
@@ -48,3 +48,4 @@ popd >/dev/null
 
 git submodule update --init pybind11
 git submodule update --init llvm-project
+git submodule update --init range-v3
diff --git a/third_party/range-v3 b/third_party/range-v3
new file mode 160000
index 0000000000000000000000000000000000000000..d098b9610ac2f182f667ae9274ac2fac7f1327f5
--- /dev/null
+++ b/third_party/range-v3
@@ -0,0 +1 @@
+Subproject commit d098b9610ac2f182f667ae9274ac2fac7f1327f5