Blog of RuSun

$\begin{matrix} One Problem Is Difficult \\ Because You {Don}^{'} t Know \\ Why It Is Diffucult \end{matrix}$

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2022

03-30

P5556 圣剑护符

03-29

P4301 [CQOI2013] 新Nim游戏

03-29

P4570 [BJWC2011]元素

03-29

CF895C Square Subsets

03-29

CF959F Mahmoud and Ehab and yet another xor task

03-27

P3265 [JLOI2015]装备购买

2021

11-28

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