11a. Equal Words

/*
 * Simple Conditions
 */
import java.util.Scanner;

public class _11a_EqualWords
{
    public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);

        // Input two strings and set them lower case
        String word1 = scan.nextLine().toLowerCase();
        String word2 = scan.nextLine().toLowerCase();

        if (word1.equals(word2)) {
            System.out.println("yes");
        } else {
            System.out.println("no");
        }
    }
}