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

}
