Compilare: main.cpp: In member function 'void Graph::addEdge(int, int, int)': main.cpp:46:41: warning: narrowing conversion of '(&((Graph*)this)->Graph::g.std::vector<_Tp, _Alloc>::operator[]<std::vector<Graph::Edge>, std::allocator<std::vector<Graph::Edge> > >(((std::vector<std::vector<Graph::Edge> >::size_type)y)))->std::vector<_Tp, _Alloc>::size<Graph::Edge, std::allocator<Graph::Edge> >()' from 'std::vector<Graph::Edge>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] g[x].push_back({y, 0, cap, g[y].size()}); ~~~~~~~~~^~ main.cpp:47:44: warning: narrowing conversion of '((&((Graph*)this)->Graph::g.std::vector<_Tp, _Alloc>::operator[]<std::vector<Graph::Edge>, std::allocator<std::vector<Graph::Edge> > >(((std::vector<std::vector<Graph::Edge> >::size_type)x)))->std::vector<_Tp, _Alloc>::size<Graph::Edge, std::allocator<Graph::Edge> >() - 1ul)' from 'std::vector<Graph::Edge>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] g[y].push_back({x, 0, cap, g[x].size() - 1}); ~~~~~~~~~~~~^~~ main.cpp: In member function 'bool Graph::BFS()': main.cpp:60:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'int Graph::DFS(int, int)': main.cpp:75:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int &h = rem[node]; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~