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.*;
import java.util.*;

public class p171a
{
    public static void main(String args[])
    {
        Scanner sc = new Scanner(System.in);
        System.out.println();
        long a1 = sc.nextLong();
        long a2 = sc.nextLong();
        long k = 0L;
        while(a2>0)
        {
            k = k*10 + a2%10;
            a2 /= 10;
        }
        System.out.println(a1+k);
    }
}