
int main() {
    int s;
    cin >> s;
    switch (s % 10) {
        case 2:
        case 4:
        case 5:
        case 7:
        case 9: cout << "hon"; break;
        case 0:
        case 1:
        case 6:
        case 8: cout << "pon"; break;
        default: cout << "bon";
    }

    return 0;
}
