#include<iostream>
using namespace std;
int main()
{
  int n;
  cin>>n;
  n=n%10;
  if(n==2||n==4||n==5||n==7||n==9)
    cout<<"hon";
  else if(n==0||n==1||n==6||n==8)
    cout<<"pon";
  else
    cout<<"bon";
}