#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  if (n % 10 == 3)
    printf("bon\n");
  else if (n % 10 == 0 || n % 10 == 2 || n % 10 == 6 || n % 10 == 8)
    printf("pon\n");
  else
    printf("hon\n");
  return 0;
}
