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