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 Main
{
	public static void main(String[] args) 
	{
		Scanner s = new Scanner(System.in);
		int a = s.nextInt();
		int b = s.nextInt();
		
		int  i,temp=0;
		while(b>0)
		{
		    temp = temp*10 + b%10;
		    b=b/10;
		}
		System.out.println(a+temp);
	}
}