#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	n %= 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;
}