Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:27:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ^ user.cpp: In function ‘void dfs2(int)’: user.cpp:55:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:82:10: warning: overflow in implicit constant conversion [-Woverflow] sol = 10000000000; ^