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