Compilare: main.cpp: In function 'int bfs(int, int)': main.cpp:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for (int i=0;i<v[q.front()].size();++i) | ~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int flux(int, int)': main.cpp:36:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for (int i=0;i<v[f].size();++i) | ~^~~~~~~~~~~~