#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int temp = 0;
  temp = n / 10;
  if (n == 2 || 4 || 5 || 7 || 9)
    cout << "hon";
  else if (n == 0 || 1 || 6 || 8)
    cout << "pon";
  else
    cout << "bon";
}
