#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	if (n % 10 == 3)
		printf("bon");
	else if (n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8)
		printf("pon");
	else if (n % 10 == 2 || n % 10 == 4 || n % 10 == 5 || n % 10 == 7 || n % 10 == 9)
		printf("hon");
	return 0;
}
