Note: This POTD is a part of Geek Summer Carnival. Solve all POTD consecutively from 5th to 10th April and get a chance to win exclusive discount vouchers on our GfG courses.
Geek has a ticket to the Geek Summer Carnival. The ticket has a positive integer B written on it. B denotes the base of a right-angled isosceles triangle.
Geek can avail discounts on X courses in the carnival.
X is the maximum number of squares of size 2x2 units that can fit in the given right-angled isosceles triangle.
Find X.
Example 1:
Input:
B = 8
Output:
6
Explanation:
Example 2:
Input:
B = 2
Output:
0
Your Task:
You don't need to read input or print anything. Complete the function countSquare() that takes integer b as input parameter and returns the number of possible squares that can fit into the isosceles triangle.
Expected Time Complexity: O(1)
Expected Auxiliary Space: O(1)

Constraints:
1 <= B <= 1000

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