// Worksheet 3

import java.util.Scanner;
public class p34
{
	public static void main(String[] args)
	{
		Scanner input = new Scanner(System.in);
		int a = 0;
		//int num = input.nextInt();
		if(a == 0)
			System.out.println("Zero.");
		else
			System.out.println("No zero.");
	}
}