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.
