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