Compilare: user.cpp: In function ‘int ExtraWeightRemoveColumn(const std::vector<std::vector<short int> >&, const std::vector<SumEntry>&, const std::vector<SumEntry>&, int, int)’: user.cpp:20:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < newRows.size(); i++) ^ user.cpp: In function ‘void RemoveColumn(const std::vector<std::vector<short int> >&, std::vector<SumEntry>&, std::vector<SumEntry>&, int, int)’: user.cpp:37:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < rows.size(); i++) ^ user.cpp: In function ‘int Solve(int, int, int, int, const std::vector<std::vector<short int> >&)’: user.cpp:65:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < columnSum.size(); j++) ^