调试中...
行 1，列 1
logs =
[[20190101,0,1],[20190104,3,4],[20190107,2,3],[20190211,1,5],[20190224,2,4],[20190301,0,3],[20190312,1,2],[20190322,4,5]]
n =
6
[[20190101,0,1],[20190104,3,4],[20190107,2,3],[20190211,1,5],[20190224,2,4],[20190301,0,3],[20190312,1,2],[20190322,4,5]]
6
[[0,2,0],[1,0,1],[3,0,3],[4,1,2],[7,3,1]]
4