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.Scanner;

public class A171 {
	
	public static void main(String[] args)
	{
		Scanner read = new Scanner(System.in);
		int input1 = 0, input2 = 0;
		String str = "";
		input1 = read.nextInt();
		input2 = read.nextInt();
		read.close();
		str = "" + input2;
		str = new StringBuffer(str).reverse().toString();
		input2 = Integer.parseInt(str);
		System.out.print(input1+input2);
	}
}