
import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();


		if(N%10==0 || N%10==1 || N%10==6 || N%10==8) {
			System.out.println("pon");
		}else if(N%10==3) {
			System.out.println("bon");
		}else {
			System.out.println("hon");
		}


	}
}
