Compilare: user.cpp: In function ‘void compute(const std::vector<std::vector<int> >&, std::vector<int>&, int, std::vector<int>&, int&)’: user.cpp:29:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (offset == coefs.size()) ^ user.cpp:32:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sums.size(); i++) ^ user.cpp:40:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < data.size(); i++) ^ user.cpp:43:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < data.size(); i++) ^