import java.util.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int r = n%10;
        String ans = "";
        if (r == 2 || r == 4 || r == 5 || r == 7 || r == 9) {
            ans = "hon";
        }
        else if (r == 0 || r == 1 || r == 6 || r == 8) {
            ans = "pon";
        }
        else {
            ans = "bon";
        }

        System.out.println(ans);
    }
}

/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