Sin Cos Problem 

Given A and B, you have to determine the maximum value of the function :

F($$\theta$$) = A*Sin$$\theta$$ + B*Cos$$\theta$$

Input 

First line of input will contain the number of test cases, T$\le$2000. Then there follows T lines, each containing two integers A and B separated by a single space. A and B will fit in a signed 32bit integer.

Output 

For each case, print one line containing two single space separated real values rounded to two decimal places. The first one is the lowest non-negative value of $\theta$ ($\theta$ is in Radian) for which the F($\theta$) gives maximum value and the second one is the maximum value.

Note: Pi is considered to be arccos(- 1).

Sample Input 

4
1 1
-1 1
1 -1
-1 -1

Sample Input 

0.79 1.41
5.50 1.41
2.36 1.41
3.93 1.41

Problem Setter: Muhammad Ridowan
Alternate Solution: Zobayer Hasan