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

int main() {
  int N;
  cin>>N;
  int 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;
}
  