Compilare: main.cpp: In member function 'void Graph::addEdge(int, int, int)': main.cpp:32:37: warning: narrowing conversion of '(((Graph*)this)->Graph::adj + ((sizetype)(((long unsigned int)v) * 24ul)))->std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >()' from 'std::vector<Edge>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] Edge a{ v, 0, C, adj[v].size() }; ~~~~~~~~~~~^~ main.cpp:34:37: warning: narrowing conversion of '(((Graph*)this)->Graph::adj + ((sizetype)(((long unsigned int)u) * 24ul)))->std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >()' from 'std::vector<Edge>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] Edge b{ u, 0, 0, adj[u].size() }; ~~~~~~~~~~~^~ main.cpp: In member function 'int Graph::sendFlow(int, int, int, int*)': main.cpp:68:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; start[u] < adj[u].size(); start[u]++){ ~~~~~~~~~^~~~~~~~~~~~~~~