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.*;

import static java.lang.Integer.*;
import static java.lang.Math.*;
public class Code171A {

    public static void main(String[] args) throws Exception {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(in.readLine());
        long a = Long.parseLong(st.nextToken());
        long b = Long.parseLong(new StringBuilder(st.nextToken()).reverse().toString());
        System.out.println(a+b);
    }

}