[1, 2, 2, 3]
[[],[1],[1,2],[1,2,2],[1,2,2,3],[1,2,3],[1,3],[2],[2,2],[2,2,3],[2,3],[3]]
[1, 1, 2, 2]
[[],[1],[1,1],[1,1,2],[1,1,2,2],[1,2],[1,2,2],[2],[2,2]]
1 0