
import java.util.Scanner;


public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.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");
		}
	
		scan.close();
	}

}
