Compilare: main.cpp: In member function 'void Graf::add(int, int, int)': main.cpp:27:46: warning: narrowing conversion of '(((Graf*)this)->Graf::graf + ((sizetype)(((long unsigned int)to) * 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 ob1 = {to, 0, cap, graf[to].size()}; ~~~~~~~~~~~~~^~ main.cpp:28:48: warning: narrowing conversion of '(((Graf*)this)->Graf::graf + ((sizetype)(((long unsigned int)from) * 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 ob2 = {from, 0, 0, graf[from].size()}; ~~~~~~~~~~~~~~~^~ main.cpp: In member function 'int Graf::dfs(int, int, int, int*)': main.cpp:64:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; start[from] < graf[from].size(); start[from]++) { ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~