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

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

    if (n % 10 == 3)
        printf("bon");
    else if (n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8)
        printf("pon");
    else
    {
        printf("hon");
    }

    return 0;
}