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

		if(N % 10 == 3){	
		System.out.println("bon");
		}

		if(N % 10 == 0 && N % 10 == 1 && N % 10 == 6 && N % 10 == 8){
		System.out.println("pon");
		}

		if(N % 10 == 2 && N % 10 == 4 && N % 10 == 5 && N % 10 == 7 && N % 10 == 9){
		System.out.println("hon");
		}
	}