#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>


int main (void)
{
    int n;

    scanf("%d", &n);

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

    return 0;
}
