
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		try (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");
			}
		}
	}
}
