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.Scanner;

class Circle {
	private double x;
	private double y;
	private double r;

	Circle(double x, double y, double r) {
		setX(x);
		setY(y);
		setR(r);
	}

	public void setX(double x) {
		this.x = x;
	}

	public void setY(double y) {
		this.y = y;
	}

	public void setR(double r) {
		this.r = r;
	}

	public double getX() {
		return x;
	}
	public double getY() {
		return y;
	}
	public double getR() {
		return r;
	}

}

public class Main {

	static Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		int n = (int)sc.nextDouble();

		for (int i = 0; i < n; i++) {
			Circle c0 = new Circle(sc.nextDouble(), sc.nextDouble(), sc.nextDouble());
			Circle c1 = new Circle(sc.nextDouble(), sc.nextDouble(), sc.nextDouble());

			c_Intersection(c0, c1);
		}

	}

	private static void c_Intersection(Circle c0, Circle c1) {
		double d = Math.pow(c0.getX() - c1.getX(), 2) + Math.pow(c0.getY() - c1.getY(), 2);

		if (d < Math.pow(c0.getR() - c1.getR(), 2)) {

			if (c0.getR() >= c1.getR()) {
				System.out.println(2);
			} else {
				System.out.println(-2);
			}

		} else if ( d <= Math.pow(c0.getR() + c1.getR(), 2)) {
			System.out.println(1);
		} else {
			System.out.println(0);
		}

	}

}