#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, a, b;
  cin >> n;
  if (n >= 10 && n < 100) {
    a = n / 10;
    n = n - a * 10;
  } else if (n >= 100) {
    a = n / 10;
    b = n / 100;
    n = n - a * 10 - b * 100;
  }
  if (n == 3) {
    cout << "bon" << endl;
  } else if (n == 0 || n == 1 || n == 6 || n == 8) {
    cout << "pon" << endl;
  } else {
    cout << "hon" << endl;
  }
  return 0;
}
