package no138;

import java.util.Scanner;

public class Main {

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

	public static int kaseki(String s) {
		String[] t = s.split("\\.");
		int n = 0;
		for(int i=0;i<3;i++) {
			n = n * 101 + Integer.valueOf(t[i]);
		}
		return n;
	}

}