#include <stdio.h>

int a,num,c;

int main(){
	scanf("%d",&a);
    num = a/100;
    switch (num) {
            case 2:
            case 4:
            case 5:
            case 7:
            case 9:
                printf("hon");
                break;
            case 0:
            case 1:
            case 6:
            case 8:
                printf("pon");
                break;
            case 3:
                printf("bon");
                break;
            default:
                printf("Out of range");
                break;
        }
	return 0;
}