import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String s = String.valueOf(n);
        switch(s.substring(s.length() - 1)){
            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");
                break;
        }
    }
}
/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