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