import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();

        switch (N) {
            case 2:
            case 4:
            case 5:
            case 7:
            case 9:
                System.out.println("hon");
                break;
            case 0:
            case 1:
            case 6:
            case 8:
                System.out.println("pon");
                break;
            case 3:
                System.out.println("bon");
        }
    }
}
