Compilare: main.cpp: In function 'int main()': main.cpp:144:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 144 | for(int f = 0 ; f < m.size() ; f ++) | ~~^~~~~~~~~~ main.cpp:152:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 152 | for(int f = 0 ; f < muchii.size() ; f ++) | ~~^~~~~~~~~~~~~~~