geometry

Time Limit: 2000/1000 MS (Java/Others)

Memory Limit: 65536/65536 K (Java/Others)

Description

There is a point $P$ at coordinate $(x,y)$.
A line goes through the point, and intersects with the postive part of $X,Y$ axes at point $A,B$.
Please calculate the minimum possible value of $|PA|*|PB|$.

Input

the first line contains a positive integer T,means the numbers of the test cases.

the next T lines there are two positive integers X,Y,means the coordinates of P.

$T=500$,$0< X,Y\leq 10000$.

Output

T lines,each line contains a number,means the answer to each test case.



Sample Input

1 2 1

Sample Output

4 in the sample $P(2,1)$,we make the line $y=-x+3$,which intersects the positive axis of $X,Y$ at (3,0),(0,3).$|PA|=\sqrt{2},|PB|=2\sqrt{2},|PA|*|PB|=4$,the answer is checked to be the best answer.

Hint

hujie

Source

BestCoder Round #68 (div.2)

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