#include <stdio.h>

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