Compilare: user.cpp: In function ‘void Dfs(int)’: user.cpp:20:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++){ ^ user.cpp:37:17: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] V[nod].a = c; ^ user.cpp:37:17: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:37:17: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized]