#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;
}

  
  
  