//
//	P.188 #3
//
//	name:	YesNo.java
//
//	...
//	goal:	...
//

import java.util.Scanner;

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

		String response;
		boolean accept;

		System.out.print("Input the value of response: ");
		response = kb.nextLine();

		if(response.equalsIgnoreCase("yes") || response.equalsIgnoreCase("y"))
			accept = true;
		else
			accept = false;

		if(accept == true) 	System.out.println("YES.");
		else				System.out.println("NO.");

		// p.172
		System.out.println(true && false);
	}
}