Distance from a point to a line
-------------------------------
Let us compute the distance from a point to a line.
The line is specified by two different points that
are on the line.  Each point is specified by its 
x- and y-coordinate.

Input
-----
The input begins with a single positive integer on 
a line by itself indicating the number of cases 
following, each of them on a line as described below. 
Each case is described by six real numbers x0, y0,
x1, y1, x2 and y2.

Output
------
For each test case, the output must follow the 
description below.  The distance from the point
(x0, y0) to the line specified by its points
(x1, y1) and (x2, y2) rounded to the closest
integer.

Sample input
------------
5
0 0 0 0 1 1
0 0 0 1 1 1
0 0 100 1 101 1
-1 -1 0 0 0 1
0 20 0 0 1 1

Sample output
-------------
0
1
1
1
14