#include <bits/stdc++.h>
int main() {
  int n;
  scanf("%d", &n);
  if (n >= 100) {
    n /= 100;
  } else if (n >= 10 && n <= 99)
    n /= 10;
  if (n == 3)
    printf("bon");
  else if (n == 1 || n == 6 || n == 8 || n == 0)
    printf("pon");
  else
    printf("hon");
  return 0;
}
