#include<stdio.h>
int main()
{
    int n;
    // 整数の入力
    scanf("%d", &n);
    // 出力
	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");
		case 3:
		printf("bon\n");

	}
    return 0;
}
