In this problem you will be given a half-circle. The half-circle’s radius is r. You can take any point A on the half-circle and draw 2 lines from the point to the two sides of the diameter(AB and AC). Let the sum of square of one line’s length and the other line’s length is s

Like in the figure s = AB² + AC. And BC = 2r.

Now given r you have to find the maximum value of s. That is you have to find point A such that AB² + AC is maximum.

Input

First line of the test case will be the number of test case T (1 ≤ T ≤ 1000). Then T lines follows. On each line you will find a integer number r (1 ≤ r ≤ 1000000); each representing the radius of the half-circle.

Output

For each input line, print a line containing "Case I: ", where I is the test case number and the maximum value of s. Print 2 digit after decimal (Errors should be less then .01).

Example

Sample Input:
1
1

Sample Output:
Case 1: 4.25

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	Mitch Schwartz: 2015-02-04 21:36:47 Input is fine according to my test. Stop spreading misinformation.
	Scott Shepherd: 2015-02-04 16:38:41 Like others here, I got WA when I assumed integer radius, and AC when I considered it floating-point. In fact I ran both my scripts, the WA one and the AC one, on every possible value of r as stated above, i.e., all integers 1...1000000. The output is identical, says diff. So it does seem like there are noninteger radii in the test cases, in violation of the input spec. Last edit: 2015-02-04 20:58:19
	bharat: 2015-01-28 21:06:31 taking radius in double instead of long int makes it green :D
	Raj Kumar Chauhan: 2015-01-23 19:24:02 easy one :)
	Shivam kumar : 2015-01-23 16:07:37 test case consists of only integer.
	Arnabjyoti Kalita: 2015-01-18 07:49:28 take care of the inputs... radius is long long... answer is double
	sathya_dev: 2014-12-29 06:54:58 Hi.. Test Case contains float value. Use float. Cost me a WA.
	Anuj Agrawal: 2014-12-25 10:45:33 Notice a space after the colon ,costed me WA Last edit: 2014-12-25 10:48:11
	Chinmaya Kumar Patanaik: 2014-12-20 20:16:40 Changed radius from int to double...and it worked..inputs in the question could have been more clear. Last edit: 2014-12-20 20:17:05
	Samarth Kothari: 2014-12-16 04:40:57 It definitely has float radius!!! Last edit: 2014-12-16 04:41:22