#include<stdio.h>

int main(void){

	int n;

	scanf("%d",&n);

	switch(n%10){
	case 2:
	case 4:
	case 5:
	case 7:
	case 9:
		printf("hon\n");
		break;
	case 0:
	case 1:
	case 6:
	case 8:
		printf("pon\n");
		break;
	case 3:
		printf("bon\n");
		break;
	}


	return 0;
}
