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