#include <bits/stdc++.h>
int main() {
  int n, i, j;
  int number = 0;
  scanf("%d", &n);
  if (n % 10 == 3) printf("bon");
  if (n % 10 == 0 or n % 10 == 1 or n % 10 == 6 or n % 10 == 8) printf("pon");
  if (n % 10 == 2 or n % 10 == 4 or n % 10 == 5 or n % 10 == 7 or n % 10 == 9)
    printf("hon");
  return 0;
}
