import java.util.*;
 
public class Main {
	public static void main(String[] args) {
    	Scanner sc = new Scanner(System.in);
        String s = sc.next();
        s = s.substring(s.length() - 1);
        if(s.equals("3")){
        	System.out.println("bon");
        }else if(s.equals("0") || s.equals("1") || s.equals("6") || s.equals("8")){
        	System.out.println("pon");
        }else{
        	System.out.println("hon");
        }
    }
}
/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