ProgBasicsJavaBook3.1SimpleConditions11EqualWords

import java.util.Scanner;

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

        String word1 = scanner.nextLine();
        String word2 = scanner.nextLine();

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

    }
}