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