#include<bits/stdc++.h>
using namespace std;
int main()
{
  int n;
  cin>>n;
  n%=10;
  if(n==3)
    cout<<"bon";
  else if(n==0||n==1||n==6||n==8)
    cout<<"pon";
  else
    cout<<"hon";
  return 0;
}