Compilare: main.cpp: In member function 'void Dinic::add_edge(int, int, int)': main.cpp:15:38: warning: narrowing conversion of '((Dinic*)this)->Dinic::V[b].std::vector<Dinic::edge>::size()' from 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 15 | V[a].push_back({b,c,V[b].size()}); | ~~~~~~~~~^~ main.cpp:16:40: warning: narrowing conversion of '(((Dinic*)this)->Dinic::V[a].std::vector<Dinic::edge>::size() - 1)' from 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 16 | V[b].push_back({a,0,V[a].size()-1}); | ~~~~~~~~~~~^~ main.cpp: In member function 'int Dinic::dfs(int, int)': main.cpp:46:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for (;last[node]<V[node].size();last[node]++){ | ~~~~~~~~~~^~~~~~~~~~~~~~~