#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int k = n % 10;
  if (k == 2 || k == 4 || k == 5 || k == 7 || k == 9)
    cout << "hon";
  else if (k == 0 || k == 6 || k == 8)
    cout << "pon";
  else if (k == 3)
    cout << "bon";
}
