#include <stdio.h>

int main(void){
   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");
   }

   return 0;
}
