#include <stdio.h>

int main(void)
{
    int n;
    scanf("%d", &n);

    switch (n % 10)
    {
    case 3:
        printf("bon\n");
        break;
    case 0:
    case 1:
    case 6:
    case 8:
        printf("pon\n");
        break;
    default:
        printf("hon\n")
    }
    return 0;
}