#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  switch (n % 10) {
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      cout << "hon";
      break;
    case 3:
      cout << "pon";
      break;
    default:
      cout << "bon";
  }
  return 0;
}
