import java.io.*;
import java.util.*;

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

		int n = in.nextInt();
		switch(n) {
			case 2:
			case 4:
			case 5:
			case 7:
			case 9:
				System.out.println("hon"); break;
			case 0:
			case 1:
			case 6:
			case 8:
				System.out.println("pon"); break;
			case 3:
				System.out.println("bon"); break;
		}
	}
}

