#include <iostream>
#include <iomanip>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <climits>
#include <cfloat>
#include <vector>
#include <string>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <algorithm>
#include <functional>
#include <utility>
#include <numeric>
#include <iterator>

using namespace std;

typedef long long LL;
typedef unsigned long long ULL;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int,int> PII;
typedef istringstream ISS;
typedef ostringstream OSS;

#define REP( i, m, n ) for ( int i = (int)( m ); i < (int)( n ); ++i )
#define FOR( v, c ) for ( auto &v : c )

#define EACH( it, c ) for ( auto it = c.begin(); it != c.end(); ++it )
#define ALL( c ) (c).begin(), (c).end()
#define DRANGE( c, p ) (c).begin(), (c).begin() + p, (c).end()

#define PB( n ) push_back( n )
#define MP( a, b ) make_pair( ( a ), ( b ) )
#define EXIST( c, e ) ( (c).find( e ) != (c).end() )

#define fst first
#define snd second

#define DUMP( x ) cerr << #x << " = " << ( x ) << endl
#define DEBUG( x ) cerr << __FILE__ << ":" << __LINE__ << ": " << #x << " = " << ( x ) << endl

const double EPS = 1e-8;

struct Point
{
	double x, y;

	Point() : x( 0 ), y( 0 ) {}
	Point( const double x, const double y ) : x( x ), y( y ) {}
	Point( const Point &a ) : x( a.x ), y( a.y ) {}
	
	const Point operator + ( const Point &a ) const
	{
		return Point( x + a.x, y + a.y );
	}

	Point& operator += ( const Point &a ) 
	{
		x += a.x;
		y += a.y;

		return *this;
	}

	const Point operator - ( const Point &a ) const
	{
		return Point( x + ( -a.x ), y + ( -a.y ) );
	}

	Point& operator -= ( const Point &a )
	{
		x -= a.x;
		y -= a.y;

		return *this;
	}

	const Point operator * ( const double a ) const
	{
		return Point( x * a, y * a );
	}

	Point& operator *= ( const double a )
	{
		x *= a;
		y *= a;

		return *this;
	}

	const Point operator / ( const double a ) const
	{
		return Point( x / a, y / a );
	}

	Point& operator /= ( const double a )
	{
		x /= a;
		y /= a;

		return *this;
	}

	bool operator < ( const Point &a ) const
	{
		return x == a.x ? y < a.y : x < a.x;
	}

	double abs() const
	{
		return sqrt( pow( x, 2. ) + pow( y, 2. ) );
	}

	const Point unitVector() const
	{
		return *this / abs();
	}

	const Point normalVector1() const
	{
		return Point( y, -x );
	}

	const Point normalVector2() const
	{
		return Point( -y, x );
	}
};

bool eq( const double a, const double b )
{
	return abs( a - b ) <= EPS;
}

// 二点間の距離
double distance( const Point &a, const Point &b )
{
	return ( a - b ).abs();
}

int circles_intersect( const Point &p1, const double r1, const Point &p2, const double r2 )
{
	if ( eq( p1.x, p2.x ) && eq( p1.y, p2.y ) && eq( r1, r2 ) )
	{
		return 3;
	}

	const double dist = distance( p1, p2 );
	if ( r1 + r2 + EPS < dist )
	{
		return 0;
	}
	else if ( eq( r1 + r2, dist ) )
	{
		return 1;
	}
	else if ( abs( r1 - r2 ) + EPS < dist && dist + EPS < r1 + r2 )
	{
		return 2;
	}
	else if ( dist + EPS <  abs( r1 - r2 ) )
	{
		return r1 < r2 ? 20 : 10;
	}
	else if ( eq( abs( r1 - r2 ), dist ) )
	{
		return r1 < r2 ? 21 : 11;
	}
	return -1;
}

int main()
{
	cin.tie( 0 );
	ios::sync_with_stdio( false );
	
	int n;
	cin >> n;

	REP( casenum, 0, n )
	{
		double xa, ya, ra, xb, yb, rb;
		cin >> xa >> ya >> ra >> xb >> yb >> rb;
		
		int res = circles_intersect( Point( xa, ya ), ra, Point( xb, yb ), rb );
		
		switch ( res )
		{
			case 0:
				cout << 0 << endl;
				break;
			case 10:
				cout << 2 << endl;
				break;
			case 20:
				cout << -2 << endl;
				break;
			default:
				cout << 1 << endl;
				break;
		}
	}

	return 0;
}

Measured memory_bytes: 1236