Compilare: user.cpp: In function ‘int main()’: user.cpp:39:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(G[q].size()>qq){ ^ user.cpp:37:17: warning: unused variable ‘ww’ [-Wunused-variable] int ww=G[q].size(); ^ user.cpp:38:17: warning: unused variable ‘www’ [-Wunused-variable] int www=G[q][qq].first; ^ user.cpp:32:13: warning: unused variable ‘w’ [-Wunused-variable] int w=stk.top(); ^ user.cpp:48:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ans.size()-1;++i)fout<<ans[i]<<' '; ^