#include <bits/stdc++.h>
using namespace std;

int main() {
  int n;
  cin>>n;
  n%=10;
  if(n==3) cout<<"bon"<<endl;
  else if((n==0 || n==1) || (n==6 || n==8)) cout<<"pon"<<endl;
  else cout<<"hon"<<endl;
}
