import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();

		int b = sc.nextInt();
		int c = sc.nextInt();

		String S = sc.next();
		if (true)(S=abc){
		System.out.println("Yes");
          else 
            System.out.println("No");
	}
}
