day 23 session 1 prob 4
 
 
import java.util.*;
public class Main 
{
public static void main(String args[])
{
	Scanner sc=new Scanner(System.in);
	String p1=sc.nextLine();
	String p2=sc.nextLine();
	UserMainCode u=new UserMainCode();
	u.display(p1, p2);
 
}
}
 
 
 
 
public class UserMainCode
{
public void display(String p1, String p2)
{
	String[]a=p1.split(" ");
	String []b=p2.split(" ");
	if(a[1].equals(b[1]))
	{
		System.out.println("Yes");
	}
	else
	{
		System.out.println("No");
	}
}
}
 

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