Compilare: user.cpp: In function ‘void Solve()’: user.cpp:30:54: warning: ‘rad’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (vector <int> :: iterator it = G[node].begin(); it != G[node].end(); ++it) ^ user.cpp:49:9: note: ‘rad’ was declared here int rad; ^