EqualWords

import java.util.Scanner;

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

        String firstWord = scan.nextLine().toUpperCase();
        String secondWord = scan.nextLine().toUpperCase();

        if (firstWord.equals(secondWord)){
            System.out.println("yes");
        }
        else{
            System.out.println("no");
        }

    }
}