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test20191021

Posted on 2019-10-21

乱搞场.

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bzoj 3930 选数

Posted on 2019-10-20 | Edited on 2019-10-21

$\gcd$ 的性质.

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bzoj 4036 按位或

Posted on 2019-10-20 | Edited on 2019-11-09

min-max 容斥.

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min-max 容斥学习笔记

Posted on 2019-10-20 | Edited on 2019-11-09

$$
\max(S)=\sum_{T\subseteq S,T\neq \emptyset} (-1)^{|T|-1}\cdot \min(T) \\
\min(S)=\sum_{T\subseteq S,T\neq \emptyset} (-1)^{|T|-1}\cdot \max(T)
$$

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test20191020

Posted on 2019-10-20

出锅场.

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bzoj 3884 上帝与集合的正确用法

Posted on 2019-10-19

拓展欧拉定理.

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bzoj 4001 概率论

Posted on 2019-10-18

小水题.

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bzoj 4066 简单题

Posted on 2019-10-18

$kd$ 树 + 定期重构.

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bzoj 4031 小Z的房间

Posted on 2019-10-18

矩阵树定理.

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CF1236

Posted on 2019-10-18

$Div.2$

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CF1237

Posted on 2019-10-17 | Edited on 2019-10-18

$Global\ Round\ 5$

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初赛试题选做

Posted on 2019-10-17

马上初赛了,假装准备一下.

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bzoj 4007 战争调度

Posted on 2019-10-16

状压 $dp$ .

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test20191016

Posted on 2019-10-16

数数场.

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bzoj 4005 骗我呢

Posted on 2019-10-15

$dp$ 计数 + 容斥原理.

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bzoj 4004 装备购买

Posted on 2019-10-15

求解最小权值极大线性无关组.

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test20191015

Posted on 2019-10-15

乱搞场.

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bzoj 4003 城池攻占

Posted on 2019-10-14

可并堆.

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test20191014

Posted on 2019-10-14

写挂场.

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test20191013

Posted on 2019-10-13

数数场.

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JKLover

JKLover

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