
import java.util.Scanner;

public class Main {

    private static String solve(int n) {
        if (n % 10 == 2 || n % 10 == 4 || n % 10 == 5 || n % 10 == 7 || n % 10 == 9) {
            return "hon";
        } else if (n % 10 == 6 || n % 10 == 8 || n % 10 == 1 || n % 10 == 0) {
            return "pon";
        } else {
            return "bon";
        }
    }


    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        String res = solve(n);
        System.out.println(res);
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz