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 A {
   public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);
      System.out.println( sc.nextInt() + Integer.parseInt(
               (new StringBuilder(sc.next()).reverse()).toString()));
   }
}