#include<stdio.h>

int main()
{
  int n;
  
  scanf("%d", &n);
  
  if(n % 10 == 2 || n % 10 == 4 || n % 10 == 5 || n % 10 == 7 || n % 10 == 9)
  {
    printf("hon\n");
  }else if(n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8)
  {
    printf("pon\n");
  }else if(n % 10 == 3)
  {
    printf("bon\n");
  }
}