Product of Sum and Difference

You are given two integers, a and b.
Compute the Sum and Difference of a and b. Return the Product of Sum and Difference.

Input Format

First Parameter - Integer a

Second Parameter - Integer b

Output Format

Return the integer.

Example 1:

Input:
    5
    2
Output:
    21
Explanation:
    Sum is (5 + 2)  = 7 and Difference is (5 - 2) = 3. The product of Sum and Difference is 21.

Example 2:

Input:
    -14
    -4
Output:
    180
Explanation:
    The Sum is -18 and Difference is -10. The product is 180.

Constraints

• -10⁴ <= a, b <= 10⁴
• Expected Time Complexity: O(1)
• Expected Space Complexity: O(1)