Problem 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≤10000.
Output
T lines,each line contains a number,means the answer to each test case.
Sample Input
1
2 1
Sample Output
4
