import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int kaseki = getVersion(sc.next());
		int judge = getVersion(sc.next());
		sc.close();
		System.out.println(kaseki >= judge ? "YES" : "NO");
	}

	public static int getVersion(String version){
		String[] s = version.split("\\.");
		int no = 0;
		for(int i=0; i<3; i++){
			no = no * 100 + Integer.valueOf(s[i]);
		}
		return no;
	}
}