Compilare: user.cpp: In function ‘int main()’: user.cpp:72:48: warning: narrowing conversion of ‘(cap.std::vector<_Tp, _Alloc>::size<int, std::allocator<int> >() + 4294967295u)’ from ‘std::vector<int>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] G[u].push_back(neighbour{v, cap.size() - 1, cap.size() - 2}); ^ user.cpp:72:64: warning: narrowing conversion of ‘(cap.std::vector<_Tp, _Alloc>::size<int, std::allocator<int> >() + 4294967294u)’ from ‘std::vector<int>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] G[u].push_back(neighbour{v, cap.size() - 1, cap.size() - 2}); ^ user.cpp:73:48: warning: narrowing conversion of ‘(cap.std::vector<_Tp, _Alloc>::size<int, std::allocator<int> >() + 4294967294u)’ from ‘std::vector<int>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] G[v].push_back(neighbour{u, cap.size() - 2, cap.size() - 1}); ^ user.cpp:73:64: warning: narrowing conversion of ‘(cap.std::vector<_Tp, _Alloc>::size<int, std::allocator<int> >() + 4294967295u)’ from ‘std::vector<int>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] G[v].push_back(neighbour{u, cap.size() - 2, cap.size() - 1}); ^