100644 blob 4722683a9ee56210c7a2d6f99cc02bbce92cbbe8	cpp.rst
040000 tree 87e9347a948a53c3de31bdeb59257121f732e178	cpp_synchronization
040000 tree 97ca349e76ec7ef4d5b98ec72a0ef30cf043c4e2	hello_world