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 Solution {
	public static StringTokenizer tok = null;
	public static BufferedReader cin;
	
	public static String nextToken() throws Exception {
		if (tok == null || !tok.hasMoreTokens()) {
			tok = new StringTokenizer(cin.readLine());
		}
		return tok.nextToken();
	}
	
	public static int nextInt() throws Exception {
		return Integer.parseInt(nextToken());
	}
	
	public static double nextDouble() throws Exception {
		return Double.parseDouble(nextToken());
	}
	
	public static void main(String[] args) throws Exception {
		cin = new BufferedReader(new InputStreamReader(System.in));
		int a1 = nextInt();
		String s = nextToken();
		String s1 = "";
		for (int i = s.length() - 1; i >= 0; i--) {
			s1 += s.charAt(i);
		}
		System.out.println(a1 + Integer.parseInt(s1));
	}

}