#include<stdio.h>

int main(void)
{
	
	int N;
    scanf("%d",&N);
	
	switch (N % 10){
	case 2:4;5;7;9;
		printf("hon\n");
		break;
	case 0:1;6;8;
	printf("pon\n");
		break;
	case 3:
		printf("bon\n");
	default:
		break;
	}
	
	return 0;

}