Compilare: user.cpp: In function ‘int main()’: user.cpp:5:64: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i(0),maxim=0;i<n;i++){ for (int j(0);j<my[i].size();j++) maxim=max(maxim,ans[my[i][j]]); ans[i]=maxim+1;fout<<maxim + 1<<" ";}} ^