John was given a task to make a rectangular box during his innovation competition. He was given with
the A cm of wire and B cm^{2} of special paper. He had to use all the wire (for the 12 edges) and paper (for the 6 sides) to make the box. So what will be the maximum volume of that box?

Example 1:
Input:
A = 20, B = 14
Output:
3
Explanation:
The maximum volumed Rectangular
Box we can get is 3cm^{3}.
Example 2:
Input:
A = 20, B = 16
Output:
4
Explanation:
The maximum volumed Rectangular
Box we can get is 4cm^{3}.

Your Task:
You don't need to read input or print anything. Your task is to complete the function getVol() which takes 2 Integers A, and B as input and returns the answer.

Expected Time Complexity: O(1)
Expected Auxiliary Space: O(1)

Constraints:
1 <= A,B <= 10^{6}

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