10
0	3	1 1.0	3 1.0   4 1.0
1	4	0 1.0	2 1.0	4 1.0	5 1.0
2	3	1 1.0	5 1.0	6 1.0
3	3	0 1.0	4 1.0	7 1.0
4 	6	0 1.0	1 1.0   3 1.0   5 1.0    7 1.0   8 1.0
5	6	1 1.0	2 1.0   4 1.0   6 1.0    8 1.0   9 1.0
6	3	2 1.0   5 1.0   9 1.0
7	3	3 1.0	4 1.0	8 1.0 
8	4	4 1.0	5 1.0	7 1.0	9 1.0
9	3	5 1.0	6 1.0	8 1.0