import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);

		int n = stdIn.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");
		}

		stdIn.close();
	}
}
