Problem List
secret.
「Note」Probability Generating Function
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It’s time to roll the dice.
Binomial Sum
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$$
[x^k]F(g(x)) = [x^k]\sum_{i = 0}^{k} [x^i]F(x)g^i(x)
$$
Unit Root Inversion
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And trying to figure out what it’s like moving on.
Stirling & Stirling Inversion
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Waiting for the end.
「Note」Liner Programming
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开始吟唱
「Summary」学科营题目集合
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What we don’t know.
「Summary」2023-04-08 做题记录
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听不懂了。
「Summary」 CQOI 2023 省选 游记
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心高气盛难免对自己抱有幻想。
「Summary」CQ 2023 省选前复习记录
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伝えに来たよ 傷跡を辿って それなら もう恐れるものはないんだと.
「Summary」CQ 2023 省选前考试记录
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I hope it was enough to be the way you are when everything’s falling apart.
「Note」FWT
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emm…
「Note」 后缀自动机
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我直接忽略掉这个玩意的原理。
「Summary」 NOI 春测游记
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终究是我的锅。/ll
「Summary」 what r u thinkin' ?
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the set of tricks.