Compilare: user.cpp: In function ‘bool verif_sup(const std::vector<std::vector<int> >&, int, int, int, int, int)’: user.cpp:16:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((i + x - 1) >= harta.size() || (j + y - 1) >= harta[i + x - 1].size() || harta[i + x - 1][j + y - 1] != tara) return false; ^ user.cpp:16:77: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((i + x - 1) >= harta.size() || (j + y - 1) >= harta[i + x - 1].size() || harta[i + x - 1][j + y - 1] != tara) return false; ^