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