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 sum {
	public static void main(String[] args) {
		Scanner inputScanner=new Scanner(System.in);
		while(inputScanner.hasNext()){
			int sum=0;
			int r;
			int a=inputScanner.nextInt();
			int b=inputScanner.nextInt();
			while(b!=0)
			{
				r=b%10;
				b=b/10;
				sum=sum*10+r;
			}
			System.out.println(sum+a);
		}
	}

}