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.*;
public class Problem0171a {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        StringBuilder sb = new StringBuilder();
        int a = sc.nextInt();
        int b = sc.nextInt();
        sb.append(b);
        sb.reverse();
        System.out.println(a+(Integer.parseInt(sb.toString())));

    }
}