Compilare: user.cpp: In function ‘void add_muc(std::vector<std::vector<muc> >&, int, int, int, int)’: user.cpp:62:54: warning: narrowing conversion of ‘(&(& graf)->std::vector<_Tp, _Alloc>::operator[]<std::vector<muc>, std::allocator<std::vector<muc> > >(((std::vector<std::vector<muc> >::size_type)b)))->std::vector<_Tp, _Alloc>::size<muc, std::allocator<muc> >()’ from ‘std::vector<muc>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] graf[a].push_back({a, b, cap, 0, cost, graf[b].size(), k++}); ^ user.cpp:63:54: warning: narrowing conversion of ‘((&(& graf)->std::vector<_Tp, _Alloc>::operator[]<std::vector<muc>, std::allocator<std::vector<muc> > >(((std::vector<std::vector<muc> >::size_type)a)))->std::vector<_Tp, _Alloc>::size<muc, std::allocator<muc> >() + 4294967295u)’ from ‘std::vector<muc>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] graf[b].push_back({b, a, 0, 0, -cost, graf[a].size()-1, k++}); } ^