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