Compilare: user.cpp: In function ‘void DFS_Time(int, int, int)’: user.cpp:22:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[Node].size(); ++ i) ^ user.cpp: In function ‘void DFS_Last(int, int, int)’: user.cpp:30:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GT[Node].size(); ++ i) ^ user.cpp: In function ‘int main()’: user.cpp:64:48: warning: ‘Node’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(Node) Is[Node] = 1, Node = From[Node]; ^