Compilare: user.cpp: In member function ‘void graf_builder::operator()(int, int, int)’: user.cpp:52:55: warning: narrowing conversion of ‘(&(&((graf_builder*)this)->graf_builder::graf)->std::vector<_Tp, _Alloc>::operator[]<std::vector<muchie>, std::allocator<std::vector<muchie> > >(((std::vector<std::vector<muchie> >::size_type)b)))->std::vector<_Tp, _Alloc>::size<muchie, std::allocator<muchie> >()’ from ‘std::vector<muchie>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] graf[a].push_back((muchie){ b, 0, cap, graf[b].size()}); ^ user.cpp:53:54: warning: narrowing conversion of ‘((&(&((graf_builder*)this)->graf_builder::graf)->std::vector<_Tp, _Alloc>::operator[]<std::vector<muchie>, std::allocator<std::vector<muchie> > >(((std::vector<std::vector<muchie> >::size_type)a)))->std::vector<_Tp, _Alloc>::size<muchie, std::allocator<muchie> >() + 4294967295u)’ from ‘std::vector<muchie>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] graf[b].push_back((muchie){ a, 0, 0, graf[a].size()-1}); } ^