import java.util.*;
import java.io.PrintWriter;
public class Main{
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		if(n%10==3){
			System.out.println("bon");
		}else if(n%10==0 || n%10==1 || n%10==6 || n%10==8){
			System.out.println("pon");
		}else{
			System.out.println("hon");
		}
	}
}
