//No.138 化石のバージョン

import java.util.*;
import java.io.*;
import static java.util.Arrays.*;
import static java.lang.Math.*;

public class No138 {

    static final InputStream in = System.in;
    static final PrintWriter out = new PrintWriter(System.out,false);

    static void solve() throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String a = br.readLine();
        String b = br.readLine();
        String[] v1 = a.split("\\.");
        String[] v2 = b.split("\\.");
        int dig = 1;
        int n1 = 0, n2 = 0;
        for (int i=2; i>=0; i--) {
            n1 += dig*Integer.parseInt(v1[i]);
            n2 += dig*Integer.parseInt(v2[i]);
            dig *= 1000;
        }

        out.println(n1 >= n2 ? "YES" : "NO");
    }

    public static void main(String[] args) throws Exception {
        long start = System.currentTimeMillis();

        solve();
        out.flush();

        long end = System.currentTimeMillis();
        //trace(end-start + "ms");
        in.close();
    }

    static void trace(Object... o) { System.out.println(deepToString(o));}
}