Problem: <image>

Input

The input contains two integers a1, a2 (0 ≤ ai ≤ 32), separated by a single space.

Output

Output a single integer.

Examples

Input

1 1


Output

0


Input

3 7


Output

0


Input

13 10


Output

1

Solution (in JAVA):

Solution:
import java.io.PrintWriter;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        PrintWriter out = new PrintWriter(System.out, true);
        Scanner in = new Scanner(System.in);
        Main solver = new Main(in, out);
        solver.run();
    }

    Scanner in;
    PrintWriter out;

    public Main(Scanner i, PrintWriter o) {
        in = i;
        out = o;
    }

    public void run() {
        int a = in.nextInt();
        int b = in.nextInt();
        int c = 0;
        while (b > 0) {
            c *= 10;
            c += (b % 10);
            b /= 10;
        }
        out.println(a+c);
        return;
    }

}