#include<bits/stdc++.h>

using namespace std;

int main()
{
  int n, x;
  cin >> n;
  x=n%10;
  if(x==2 || x==4 || x==5 || x==7 || x==9)cout << "hon";
  else if(x==3)cout << "bon";
  else cout << "pon";
}