Compilare: user.cpp: In function ‘void Dfs(int)’: user.cpp:54:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<L[nod].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:72:23: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d\n", sol); ^