Problem:
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Circles Intersection

You are given circle $A$ with radius $r_a$ and with central coordinate $(x_a, y_a)$ and circle $B$ with radius $r_b$ and with central coordinate $(x_b, y_b)$.

Write a program which prints:

"2" if $B$ is in $A$,

"-2" if $A$ is in $B$,

"1" if circumference of $A$ and $B$ intersect, and

"0" if $A$ and $B$ do not overlap.

You may assume that $A$ and $B$ are not identical.

Input

The input consists of multiple datasets. The first line consists of an integer $N$ ($N \leq 50$), the number of datasets. There will be $N$ lines where each line represents each dataset. Each data set consists of real numbers:

$x_a$ $y_a$ $r_a$ $x_b$ $y_b$ $r_b$

Output

For each dataset, print 2, -2, 1, or 0 in a line.

Sample Input

2
0.0 0.0 5.0 0.0 0.0 4.0
0.0 0.0 2.0 4.1 0.0 2.0

Output for the Sample Input

2
0

Solution in JAVA (judge verdict: Accepted)

import java.util.*;import java.awt.geom.*;class Main{public static void main(String[]g){Scanner S=new Scanner(System.in);double x,d[]=new double[6];for(int i,r,n=S.nextInt();n-->0;System.out.println(r)){for(r=i=0;i<6;)d[i++]=S.nextDouble();x=Math.hypot(d[0]-d[3],d[1]-d[4]);if(x<=d[2]+d[5])r=1;if(x+d[2]<d[5])r=-2;if(x+d[5]<d[2])r=2;}}}