#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  if (n == 2 || n == 4 || n == 5 || n == 7 || n == 9)
    cout << "hon";
  else if (n == 0 || n == 1 || n == 6 || 8)
    cout << "pon";
  else if (n == 3)
    cout << "bon";
  return 0;
}
