Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:13:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<V[q].size(); i++){ ^ user.cpp: In function ‘int main()’: user.cpp:29:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<Sol.size(); i++){ ^ user.cpp:24:12: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] V[x].pb(y); ^