#include <bits/stdc++.h>
using namespace std;
int main() {
  int num;
  cin >> num;
  switch (num % 10) {
    case 2:
    case 4:
    case 5:
    case 7:
      printf("hon\n");
      break;
    case 0:
    case 1:
    case 6:
    case 8:
      printf("pon\n");
      break;
    case 3:
      printf("bon\n");
      break;
  }
  return 0;
}
