Archive

Ds 选讲

计数选讲

CF1423M Milutin's Plums

题解

杂题选讲

做题

DS 选讲

做题

Ucup 题选讲

做题

2024 NOIP 代码源

模拟赛

ARC186 vp

做题

P6809 BalticOI 2010 Day2 Mines

题解

2024 集训队互测

做题

2024.10.15 DP

做题

2024.10.11 图论

做题

P8367 LNOI2022 盒

题解

ATxmascon23C Clamp Clamp Clamp

题解

ARC170E BDFS

题解

ARC184E Accumulating Many Times

题解

ARC184B 123 Set

题解

ARC184D Erase Balls 2D

题解

IOI2024

做题

ARC174E Existence Counting

题解

ARC171E Rookhopper's Tour

题解

2024 NOIP 炼石计划

模拟赛

2024 CSP 代码源

模拟赛

梦熊 NOIP 2024

做题

ABC221G Jumping sequence

题解

ARC171C Swap on Tree

题解

ARC173F Select and Split

题解

ABC367G Sum of (XOR^K or 0)

题解

ARC175E Three View Drawing

题解

ARC180E LIS and Inversion

题解

ARC183E Ascendant Descendant

题解

ARC183D Keep Perfectly Matched

题解

AGC067B Modifications

题解

ARC176D Swap Permutation

题解

ARC083F Collecting Balls

题解

ARC177F Two Airlines

题解

ARC178E Serval Survival

题解

ARC182E Sum of Min of Mod of Linear

题解

ARC182C Sum of Number of Divisors of Product

题解

ARC182D Increment Decrement Again

题解

ARC182F Graph of Mod of Linear

题解

ARC179E Rectangle Concatenation

题解

CF1988F Heartbeat

题解

P10008 [集训队互测 2022] Range Minimum Element

题解

ARC181E Min and Max at the edge

题解

ARC181F Colorful Reversi

题解

P10359 [PA2024] Kolorowy las

题解

P10430 [JOISC 2024 Day1] 鱼 3

题解

P10432 [JOISC 2024 Day1] 滑雪 2

题解

CF1534G A New Beginning

题解

P10541 [THUPC2024] 研发计划

题解

P10542 [THUPC2024] RPG

题解

P10543 [THUPC2024] 黑白

题解

P10550 [THUPC2024] 贸易

题解

THUSC PKUSC APIO 游记

游记

初等双射构造

学习笔记

CF1951I Growing Trees

题解

ARC176F Colorful Star

题解

ARC145D Non Arithmetic Progression Set

题解

ARC176E Max Vector

题解

P5897 [IOI2013] wombats

题解

P5469 [NOI2019] 机器人

题解

P8290 [省选联考 2022] 填树

题解

P5904 P6109 [Ynoi2009] rprmq1

题解

P8990 [北大集训 2021] 小明的树

题解

SDOI2024 游记

游记

2024 一轮省集

模拟赛

CF1943E2 MEX Game 2 (Hard Version)

题解

AGC036F Square Constraints

题解

CF903G Yet Another Maxflow Problem

题解

CF1131G Most Dangerous Shark

题解

P4563 [JXOI2018] 守卫

题解

AGC036F Square Constraints

题解

P8987 [北大集训 2021] 简单数据结构

题解

CF1730F Almost Sorted

题解

CF235C Cyclical Quest

题解

2023 Luogu 省选计划

模拟赛

CF1340F Nastya and CBS

题解

P6105 [Ynoi2010] y-fast trie

题解

CF1550F Jumping Around

题解

根号分治

学习笔记

CF1801F Another n-dimensional chocolate bar

题解

ARC150F Constant Sum Subsequence

题解

P9678 [ICPC2022 Jinan R] Tree Distance

题解

CF566C Logistical Questions

题解

P5163 WD与地图

题解

P9361 [ICPC2022 Xi'an R] Contests

题解

SP19543 GSS8 - Can you answer these queries VIII

题解

P9447 [ICPC2021 WF] Spider Walk

题解

SP1557 GSS2 - Can you answer these queries II

题解

Min_25 筛

学习笔记

P7560 [JOISC 2021 Day1] フードコート

题解

Min-Max 容斥

学习笔记

CF1039D You Are Given a Tree

题解

P1411 树

题解

CF1891F A Growing Tree

题解

P8476 「GLR-R3」惊蛰

题解

SP10570 LONGCS - Longest Common Substring

题解

P4182 [USACO18JAN] Lifeguards P

题解

P5901 [IOI2009] Regions

题解

CSP2023 游记

游记

CF513G3 Inversions problem

题解

ABC301Ex Difference of Distance

题解

CF585F Digits of Number Pi

题解

P7600 [APIO2021] 封闭道路

题解

P4099 [HEOI2013] SAO

题解

P7782 「MCOI-Zero - AC6-M03」 Sipli Field

题解

CF125E MST Company

题解

CF1878F Vasilije Loves Number Theory

题解

CF1878G wxhtzdy ORO Tree

题解

P4652 [CEOI2017] One-Way Streets

题解

DDCC2020D Parsey

题解

P6961 [NEERC2017] Journey from Petersburg to Moscow

题解

P3533 [POI2012] RAN-Rendezvous

题解

CF231E Cactus

题解

CF1763F Edge Queries

题解

P6302 [NOI2019] 回家路线 加强版

题解

P3521 [POI2011] ROT-Tree Rotations

题解

CF1862F Magic Will Save the World

题解

P5904 [POI2014] HOT-Hotels 加强版

题解

CF1662C European Trip

题解

基础计数

学习笔记