#include <stdio.h>

int main(){
	int n,r;
	scanf("%d",&n);
	r = n % 10;
	if(r == 3){
		printf("bon");
	}else if(r == 0||r == 1||r == 6||r == 8){
		printf("pon");
	}else{
		printf("hon");
	}
	return 0;
}