L03u11_EqualWords

import java.util.Scanner;

/*
 * Created by todor on 18.01.2017 г..
 */
public class u11_EqualWords {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        String word1 = scan.nextLine().toLowerCase();
        String word2 = scan.nextLine().toLowerCase();

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