//	P.198
//
//	name:	WhileDemo.java
//
//	...

import java.util.Scanner;

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

		int count, number;

		System.out.print("Input a number: ");
		number = kb.nextInt();

		count = 2;
		while(count <= number)
		{
			System.out.print(count + ", ");
			count += 2;
		}

		System.out.println("\n\nByebye");
	}
}