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