RROOT  REAL ROOTS
Anurag is not so good at probability, In fact he tends to avoid any probability questions. Bhavik being his friend knows this and also knows that Anurag is excellent with quadratic equations.
In order to help he gives Anurag a quadratic equation of the form x^2+2*b*x+c=0 and asks him to find the probability that the given equation has real roots.
To make this question nontrivial he gives Anurag, side of the square centered at origin assuming values of b and c will not go outside that square given.
Help Anurag to find the probability?
Input
First line contains a number of test cases T(<25).Next T lines contain the side of the square S(<=1000000).
Output
Output the required probability in new line for each case up to 6 decimal places.
Example
Input: 1 8 Output: 0.833333
hide comments
MishThi:
20150803 04:12:48
Really good Mathematics Problem for budding programmers like me.. :P 

Naman Goyal:
20150511 23:05:22
Easy problem. 5 mins of paper work, 5 mins of code and green light. 

scyth3r:
20150511 08:46:27
simple and good one....


Shubham Sinha:
20150503 17:41:24
Nice Problem!!!!


Dushyant Singh:
20150426 13:05:29
Are square sides parallel to x and y axis? 

Bhavik:
20150129 14:48:45
@francky,@mitch: I would like to seek your help!! I don't know how all the recent comments are deleted?? I did not do it..so kindly help me in this matter?


Flago:
20140220 11:50:02
No quite sure, but this seems silly to me. Taking for expemple S=32 the ans is 0.91666666...


Shreyans:
20140129 20:34:10
@Bhavik :

Added by:  Bhavik 
Date:  20140126 
Time limit:  0.300s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ASM64 