Archives - SUNCHAOYI

2026 年

01-01CUHK-Shenzhen Notes 01-05CMU CS:APP Architecture Lab 01-23卡哈希

02-022025 ICPC EC-Final 杭州站 02-14题解：CF2196D Double Bracket Sequence 02-15题解：P13722 [GCPC 2024] Geometric Gridlock 02-21好题汇总

03-07题解：CF2201B Recollect Numbers

2025 年

01-032024 年度小结 01-05题解：[ABC387E] Digit Sum Divisible 2 01-06你真的懂 Floyd 吗 01-07题解：CF2057D Gifts Order

02-03题解：CF2063F1 Counting Is Not Fun (Easy Version)02-14题解：CF2066C Bitwise Slides 02-23题解：[ABC394G] Dense Buildings 02-24题解：CF2069F Graph Inclusion

03-03题解：[ABC395G] Minimum Steiner Tree 2 03-20题解：CF2075E XOR Matrix 03-26题解：CF98E Help Shrek and Donkey

04-02题解：CF2092D Mishkin Energizer 04-18题解：CF886E Maximum Element 04-22题解：CF2096F Wonderful Impostors 04-25题解：CF2106G Baudelaire

05-022025-2026 XCPC 05-07题解：CF2107E Ain and Apple Tree

06-07题解：[UTPC2024] C.Card Deck 06-26题解：CF2121H Ice Baby 06-29题解：CF2120E Lanes of Cars

07-012025 牛客暑期多校训练记录 07-27题解：CF1010C Border

08-04题解：CF2129C Interactive RBS 08-06题解：CF1453D Checkpoints 08-07题解：CCPC 2024 重庆站有限小数

09-08题解：CF2134E Power Boxes 09-10题解：CF2140E Prime Gaming 09-16题解：CF2144E Looking at Towers 09-19题解：CF2143E Make Good

11-052025 ICPC 武汉站 11-242025 ICPC 南京站 11-26题解：CF2110F Faculty

12-022025 CCPC 重庆站 12-25CMU CS:APP Data Lab 12-28CMU CS:APP Attack Lab 12-28CMU CS:APP Bomb Lab

2024 年

06-20题解：P9778 [HUSTFC 2023] 基因编辑

07-06题解：P10701 [SNCPC2024] 致命公司

08-11题解：P10865 [HBCPC2024] Genshin Impact Startup Forbidden III 08-11题解：P10864 [HBCPC2024] Genshin Impact Startup Forbidden II 08-13求 $[1,n]$ 的异或和

10-30计算几何学习笔记

11-02ICPC 小白勇闯南京 11-21位思想 11-26题解：CF2039C Shohag Loves XOR 11-27题解：CF2039D Shohag Loves GCD

12-01题解：CF1665D GCD Guess 12-11题解：CF2039E Shohag Loves Inversions 12-18题解：CF2044H Hard Demon Problem 12-20GCD 题集 12-26逆序对与期望 12-27树的拓扑序 12-28博弈论与状压 12-31题解：CF509C Sums of Digits

2023 年

01-26题解：CF575B Bribes

05-08题解：CF59E Shortest Path 05-21题解：CF509C Sums of Digits

09-29NOIP 2023 摆烂记

2022 年

01-01题解：P7993 [USACO21DEC] Lonely Photo B 01-22WC 2022 学习笔记 01-24题解：P7687 [CEOI2005] Critical Network Lines

02-02题解：P8087 『JROI-5』Interval

03-27题解：P8251 [NOI Online 2022 提高组] 丹钓战

04-07题解：P6883 [COCI2016-2017#3] Kroničan 04-25题解：P7167 [eJOI 2020 Day1] Fountain

06-05题解：CF1687A The Enchanted Forest 06-05题解：CF1688B Patchouli's Magical Talisman 06-05题解：CF1688A Cirno's Perfect Bitmasks Classroom

07-12题解：CF1701D Permutation Restoration 07-12题解：CF1702F Equate Multisets 07-12题解：CF1702C Train and Queries 07-24一些关于数据结构的杂谈 07-28题解：UVA1630 串折叠 Folding

08-05题解：P7914 [CSP-S 2021] 括号序列 08-18题解：SP13105 MUTDNA - DNA 08-21浅谈 $T(n) = a(\lfloor\frac{n}{b}\rfloor) + f(n)$08-29题解：CF19D Points

09-03题解：CF1717E Madoka and The Best University 09-07题解：P8509 如何得到 npy

10-042022 NOIP 备赛记 10-23题解：[ABC274D] Robot Arms 2

11-14题解：CF1749F Distance to the Path 11-17题解：CF1650F Vitaly and Advanced Useless Algorithms 11-18题解：P3176 [HAOI2015]数字串拆分

12-20题解：P8901 [USACO22DEC] Circular Barn S

2021 年

01-03题解：P7243 最大公约数 01-09题解：[ABC113B] Palace 01-16题解：P7273 ix35 的等差数列 01-23题解：P7190 [COCI2007-2008#6] SEMAFORI 01-31题解：P7258 [COCI2009-2010#3] SLATKISI

02-08题解：P7305 [COCI2018-2019#1] Cipele 02-10题解：P7338 『MdOI R4』Color 02-11题解：P7304 [COCI2018-2019#1] Zamjena 02-19题解：CF427C Checkposts

03-13题解：P7411 [USACO21FEB] Comfortable Cows S 03-28题解：P7472 【[NOI Online 2021 入门组] 吃豆人】

04-22题解：CF1505D Xenolith? Hippodrome?

05-09题解：CF883M Quadcopter Competition 05-15题解：CF914D Bash and a Tough Math Puzzle

06-05题解：CF1535A Fair Playoff 06-20题解：P7621 [AHOI2021初中组] 超市购物

07-03题解：B3609 [图论与代数结构 701] 强连通分量 07-05题解：B3610 [图论与代数结构 801] 无向图的块 07-08题解：B3600 [图论与代数结构 101] 图的代数表示 07-25题解：UVA11858 Frosh Week

08-06题解：CF527C Glass Carving 08-15题解：UVA1626 括号序列 Brackets sequence 08-20题解：P6267 [SHOI2002]N的连续数拆分 08-23题解：P7321 「PMOI-4」猜排列 08-30题解：CF822B Crossword solving

09-11题解：CF778A String Game

10-05题解：P7886 「MCOI-06」Gerrymandering 10-31题解：P2432 zxbsmk爱查错

11-062021 NOIP 备赛记 11-08题解：P2875 [USACO07FEB]The Cow Lexicon S 11-19初级数学学习笔记 11-25题解：CF1359D Yet Another Yet Another Task

12-09题解：P7904 「DCOI」火烧の云 12-25题解：P7995 [USACO21DEC] Walking Home B

2020 年

04-08题解：P6321 [COCI2006-2007#4] SKENER 04-08题解：P6315 [COCI2006-2007#3] NPUZZLE 04-09题解：P6330 [COCI2007-2008#1] CETVRTA 04-10题解：P6352 [COCI2007-2008#3] CETIRI 04-19题解：P6427 [COCI2008-2009#1] PTICE 04-24题解：P6460 [COCI2006-2007#5] NATRIJ

05-04题解：P6511 [QkOI#R1] Quark and Equations 05-15题解：P1469 找筷子 05-15题解：P6547 [COCI2010-2011#2] NAPOR 05-30题解：CF1345A Puzzle Pieces 05-31题解：P6682 座位调查

06-12题解：P6606 [Code+#7]最小路径串 06-27题解：P3139 [USACO16FEB]Milk Pails S

07-11题解：SP15965 ENIGMATH - PLAY WITH MATH 07-19题解：SP7259 LITE - Light Switching 07-27题解：P6686 混凝土数学 07-27题解：P6685 可持久化动态仙人掌的直径问题 07-30题解：P5962 [BOI2004]ships 船

08-07题解：CF392B Tower of Hanoi 08-16题解：CF385B Bear and Strings 08-28题解：UVA10183 How Many Fibs?

09-13题解：P3208 [HNOI2010]矩阵

10-01题解：SP16185/UVA1108 BUSINESS - Mining your own business 10-19题解：UVA12167 Proving Equivalences

11-01题解：[ABC064D] Insertion 11-07CSP 2020 场外篇 11-20题解：UVA1401 Remember the Word

12-12题解：P4171 [JSOI2010]满汉全席