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by Andy_chen @ 2020-08-02 11:10:21
@[SegmenttreeJuruo](/user/121995)
by Andy_chen @ 2020-08-02 11:11:29
啊调出来了
by 翼德天尊 @ 2020-08-02 11:17:20
建树应该是从 $1$ 建到 $n\times 2$ 的。
此贴完结，欢迎考古QwQ
by 翼德天尊 @ 2020-08-02 11:18:44
考古
by Daidly @ 2020-08-02 11:25:07
Orz
by SULAWESI @ 2020-08-02 15:13:57
orzorz
by 所有人袛旳 @ 2020-08-02 16:19:38
考古
by 秋水1024 @ 2020-08-02 17:03:45
orz
by 晨曦墨凝 @ 2022-09-01 17:36:48