#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  n /= 10;
  if (n == 3)
    cout << "bon";
  else if (n == 0 or n == 1 or n == 6 or n == 8)
    cout << "pon";
  else
    cout << "hon";
  return 0;
}
