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Codeforces Round #953 (Div.2) # Who = * A 500 B 750 C 1250 D 1500 E 2000 F 2500 Π Δ Final ⮭ 774 Iingfunny 3668 49200:04 72900:07 114500:21 130200:33 1 阅读全文
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# Codeforces Round #875 (Div. 2) [bilibili: Codeforces Round #875 (Div. 2) 实况 | 完成度 ](https://www.bilibili.com/video/BV1bo4y137he) ## A `` 阅读全文
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AtCoder Beginner Contest 291 ABCDEFG AtCoder Beginner Contest 291 | ABC 吊打萌新珍贵录像 | A~G 题解 Ex - Balanced Tree 其实两个条件都比较有启发性的意义。 树上路径和 $\operatorname{LC 阅读全文
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Codeforces Round #853 (Div. 2) 题解 ABCD Codeforces Round #853 (Div. 2) | 萌新实况被吊打 | ABCD 题解 E. Serval and Music Game 分两种情况讨论: $\lfloor\frac{s_n}{x}\rflo 阅读全文