#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;
}

