#include <stdio.h>

int main(int argc, char const *argv[])
{
    int N;
    scanf("%d", &N);
    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");
        break;

    case 3:
        printf("bon\n");
        break;

    default:
        break;
    }
    return 0;
}
