Blog of RuSun

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

OI 分类

2025

01-15

P4074 [WC2013] 糖果公园

2024

10-10

GYM104491B Standard Problem

09-12

07-08

CF1986G2 Permutation Problem (Hard Version)

07-06

P6669 [清华集训2016] 组合数问题

07-05

LOJ2143. 「SHOI2017」组合数问题

2022

11-20

P4211 [LNOI2014]LCA

11-15

CF785D Anton and School - 2

11-12

P4027 [NOI2007] 货币兑换

11-12

P2375 [NOI2014] 动物园

11-10

P7114 [NOIP2020] 字符串匹配

11-06

P2444 [POI2000]病毒

11-06

P2414 [NOI2011] 阿狸的打字机

11-06

P4849 寻找宝藏

11-03

P3755 [CQOI2017]老C的任务

11-02

P5363 [SDOI2019]移动金币

11-01

P4576 [CQOI2013]棋盘游戏

11-01

P4055 [JSOI2009] 游戏

10-31

CF432D Prefixes and Suffixes

10-31