#include <bits/stdc++>
using namespace std;

int main(void) {
  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";
  
}