Compilare: main.cpp: In member function 'void Dinic::add_edge(int, int, long long int, int)': main.cpp:44:31: warning: narrowing conversion of '(&((Dinic*)this)->Dinic::g.std::vector<std::vector<Dinic::edge> >::operator[](((std::vector<std::vector<Dinic::edge> >::size_type)v)))->std::vector<Dinic::edge>::size()' from 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 44 | edge a = {v, g[v].size(), 0, w, id}; | ~~~~~~~~~^~ main.cpp:45:31: warning: narrowing conversion of '(&((Dinic*)this)->Dinic::g.std::vector<std::vector<Dinic::edge> >::operator[](((std::vector<std::vector<Dinic::edge> >::size_type)u)))->std::vector<Dinic::edge>::size()' from 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 45 | edge b = {u, g[u].size(), 0, 0, -2}; //for bidirectional edges cap(b) = w | ~~~~~~~~~^~ main.cpp: In member function 'long long int Dinic::dfs(int, long long int)': main.cpp:71:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for(int &i = done[u]; i < g[u].size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:130:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for (int j = 0; j < a[i].size(); j++) | ~~^~~~~~~~~~~~~