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