额我觉得这题还是正经写平衡树有意义，别拿ST投机取巧。这样20行就搞完了
by accomplishment @ 2023-03-07 20:27:29
@[ColinKIA](/user/647306) 您套了个二分是不是两个 $\log$ 了啊（
by UltiMadow @ 2023-03-07 21:58:57
@[UltiMadow](/user/65681) 两个log 3秒也可以过呀？
by ColinKIA @ 2023-03-08 08:16:21
@[ColinKIA](/user/647306) 不行吧 我单 $\log$ 都跑了快 1s 了
by UltiMadow @ 2023-03-08 13:44:14