#include<stdio.h>

int main(void){
   int n;
   scanf("%d",&n);

   switch(n%10){
   case 2:
   case 4:
   case 5:
   case 7:
   case 9:
      printf("hon\n");
      break;
   case 0:
   case 1:
   case 6:
   case 8:
      printf("pon\n");
      break;
   case 3:
      printf("bon\n");
      break;
   }
   return 0;
}
      
