
import java.io.*;
import java.util.*;
public class Main {
	public static void main(String[] args) throws Exception{
		// TODO Auto-generated method stub
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		String s=br.readLine();
		int n=Integer.valueOf(s);
		int x=n%10;
		if(x==2 || x==4 || x==5 || x==7 || x==9)
			System.out.println("hon");
		else if(x==0 || x==1 || x==6 || x==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