3
50 100 10
100 600 20
850 200 40
89 613

		The selected disk is 2.

2
50 100 25
750 850 40
200 156

		No disk is selected.
		

4
100 100 10
100 200 20
80 195 40
200 200 20
90 205

		The selected disk is 3.		

1
300 90 5
303 86

		The selected disk is 1.		
		
20
1 1 10
30 1 10
90 1 10
200 1 10
1000 1 10
1 1000 10
1000 1000 10
1 30 10
1 50 10
1 70 10
1 90 10
1 200 10
1000 10 10
1000 30 10
1000 50 10
1000 70 10
1000 90 10
800 800 50
400 204 81
50 1 10
40 1

	The selected disk is 20.

	
4
30 30 30
90 90 90
55 55 55
32 32 32
500 500

	No disk was selected.