Compilare: main.cpp: In member function 'void graf_orientat::afisare()': main.cpp:71:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for(int i = 0; i < muchii.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:72:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int j = 0; j < muchii[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:84:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for(int i = 2; i < res.size(); i++){ | ~~^~~~~~~~~~~~