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