import java.util.*;
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");
		}
		
		else if(N%10 == 0 || N%10 == 1 || N%10 ==  6 || N%10 == 8)
		{
			System.out.println("pon");
		}
		else
		{
			System.out.println("hon");
		}
	}
}
