561. Summation Challenge

0

Medium

Given two integers a and b, compute their sum without using the addition or subtraction operators.

Input Format

The input consists of two lines. The first line contains an integer a. The second line contains an integer b.

Output Format

Print the sum of the two integers.

Example

Input

2
3

Output

5

Constraints

-1000 <= a, b <= 1000

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