sir5.cpp: In function 'std::vector<int, std::allocator<int> > Transform(std::vector<int, std::allocator<int> >)': sir5.cpp:14: warning: comparison between signed and unsigned integer expressions sir5.cpp:17: warning: comparison between signed and unsigned integer expressions sir5.cpp: In function 'std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > > Split(std::vector<int, std::allocator<int> >)': sir5.cpp:34: warning: comparison between signed and unsigned integer expressions sir5.cpp:36: warning: comparison between signed and unsigned integer expressions sir5.cpp: In function 'void Precompute()': sir5.cpp:54: warning: comparison between signed and unsigned integer expressions sir5.cpp:60: warning: comparison between signed and unsigned integer expressions sir5.cpp:62: warning: comparison between signed and unsigned integer expressions sir5.cpp: In function 'int main()': sir5.cpp:81: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result sir5.cpp:82: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result sir5.cpp:85: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result