Compilare: main.cpp: In member function 'int Graph::dfs(int, int)': main.cpp:40:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Graph::edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for(int &h = rem[a]; h < vecini[a].size() ; h++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::add(int, int, int)': main.cpp:67:50: warning: narrowing conversion of '(&((Graph*)this)->Graph::vecini.std::vector<std::vector<Graph::edge> >::operator[](((std::vector<std::vector<Graph::edge> >::size_type)b)))->std::vector<Graph::edge>::size()' from 'std::vector<Graph::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 67 | vecini[a].push_back({b,c,0,vecini[b].size()}); | ~~~~~~~~~~~~~~^~ main.cpp:68:53: warning: narrowing conversion of '((&((Graph*)this)->Graph::vecini.std::vector<std::vector<Graph::edge> >::operator[](((std::vector<std::vector<Graph::edge> >::size_type)a)))->std::vector<Graph::edge>::size() - 1)' from 'std::vector<Graph::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 68 | vecini[b].push_back({a,0,0,vecini[a].size() - 1}); | ~~~~~~~~~~~~~~~~~^~~