[9]
0
[3, 9]
0
[3, 4, 9]
1
[3, 4, 7, 9]
2
[3, 4, 6, 7, 9]
2
[3, 4, 5, 6, 7, 9]
2
[3, 4, 5, 6, 7, 9, 10]
6
[2, 3, 4, 5, 6, 7, 9, 10]
0
[2, 3, 4, 5, 6, 7, 8, 9, 10]
6
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
0