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