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.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        long a = in.nextLong();
        String s = in.next();
        String st = "";
        for (int i = s.length() - 1; i >= 0; i--) {
            st += s.charAt(i);
        }
        System.out.println(a + Long.parseLong(st));
    }
}