Compilare: main.cpp: In member function 'void Dinic::add_edge(int, int, int)': main.cpp:18:38: warning: narrowing conversion of '(&((Dinic*)this)->Dinic::V.std::vector<std::vector<Dinic::edge> >::operator[](((std::vector<std::vector<Dinic::edge> >::size_type)b)))->std::vector<Dinic::edge>::size()' from 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 18 | V[a].push_back({b,c,V[b].size()}); | ~~~~~~~~~^~ main.cpp:19:40: warning: narrowing conversion of '((&((Dinic*)this)->Dinic::V.std::vector<std::vector<Dinic::edge> >::operator[](((std::vector<std::vector<Dinic::edge> >::size_type)a)))->std::vector<Dinic::edge>::size() - 1)' from 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 19 | V[b].push_back({a,0,V[a].size()-1}); | ~~~~~~~~~~~^~ main.cpp: In member function 'int Dinic::dfs(int, int)': main.cpp:49:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for (;last[node]<V[node].size();last[node]++){ | ~~~~~~~~~~^~~~~~~~~~~~~~~