#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  switch (n % 10) {
    case '3':
      cout << "bon" << endl;
      break;
    case '0':
    case '1':
    case '6':
    case '8':
      cout << "pon" << endl;
      break;
    default:
      cout << "hon" << endl;
  }
  return 0;
}
