#include <stdio.h>

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

    swich (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;
    }

    return 0;
}
