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Pakna And His Polygon

By jackal_1586 · Limits 1s, 512 MB

Pakna in a wise man. He loves solving problems but always end up with more problems. This is obvious as he is best at Paknami. One day he found an interesting problem. Given the side length of a regular hexagon. You have to calculate the area of that hexagon. A regular hexagon means all sides are equal and all angles are equal. As he is Pakna, he messed up again. Now he asks for your help.

Input

Input begins with an integer T (0 < T ≤ 10000). Each of the next T line contains an integer A (0 < A ≤ 1000) representing the side length of the hexagon.

Output

For each case print the area of the hexagon. Errors less than 10^-4 will be ignored.

Samples

Input	Output
2 1 3	2.59807 23.38268

Geometry

Discussion

rezaulhsagar Earliest, Jan '17

Cloud_dd Fastest, 0.0s

m_rony Lightest, 131 kB

Jakaria_MU Shortest, 70B

Submit

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