Compilare: user.cpp: In function ‘void Read()’: user.cpp:34:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 1; i <= aux; ++i) ^ user.cpp:37:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 1; i <= aux; ++i) ^ user.cpp: In function ‘std::pair<int, int> Solve()’: user.cpp:45:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < N; ++i, std::swap(LC, LP)) ^ user.cpp:47:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t j = i; j <= N; ++j) ^ user.cpp:63:1: warning: control reaches end of non-void function [-Wreturn-type] }; ^