import java.io.BufferedReader;
import java.io.InputStreamReader;

public class No138 {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(
                    System.in));

            int[] fossilVer = strToIntArray(br.readLine());
            int[] currentVer = strToIntArray(br.readLine());

            String str = "NO";
            if (fossilVer[0] > currentVer[0]) {
                str = "YES";
            } else if (fossilVer[0] == currentVer[0]) {
                if (fossilVer[1] > currentVer[1]) {
                    str = "YES";
                } else if (fossilVer[1] == currentVer[1]) {
                    if (fossilVer[2] >= currentVer[2]) {
                        str = "YES";
                    }
                }
            }

            System.out.println(str);
        } catch (Exception e) {
            System.err.println("Error:" + e.getMessage());
        }
    }

    static int[] strToIntArray(String S) {
        String[] strArray = S.split("\\.");
        int[] intArray = new int[strArray.length];
        for (int i = 0; i < strArray.length; i++) {
            intArray[i] = Integer.parseInt(strArray[i]);
        }
        return intArray;
    }
}