You are given numbers a and b. Calculate the sum of a and reverse of b. A reverse of a number is a number which contains the same digits in reverse order. For example, reverse of 230 is 32, and reverse of 0 is 0.

The input contains two integers a and b (0 ≤ a, b ≤ 10⁹), separated by a single space. The numbers are given without leading zeros.

Output the sum of a and reverse of b.