Compilare: main.cpp: In function 'int bfs()': main.cpp:27:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(int i = 0; i < graf[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int flowmax()': main.cpp:45:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | { for ( int i = 0 ; i < graf[N].size();i++) | ~~^~~~~~~~~~~~~~~~