Compilare: main.cpp: In function 'int main()': main.cpp:34:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int j = 0; j < gr[i].size(); j++) | ~~^~~~~~~~~~~~~~ main.cpp:46:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for (int k = 0; k < mc[gr[i][j]].size(); k++) | ~~^~~~~~~~~~~~~~~~~~~~~