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前言 / 说明

  1. 若无特殊说明，文章中出现的所有的源代码均应使用 C++17 标准编译并开启 O2 优化（即编译选项为 -std=gnu++17 -O2）；
  2. 若发现文章学术性问题时，请私信联系本人 龙猫。

回忆录（推荐阅读）

  1. 竞赛生涯回忆录《我的 OI 故事》预告
  2. 我的 OI 故事（一）：未知之旅
  3. 我的 OI 故事（二）：世上本没有路
  4. 我的 OI 故事（三）：希望破灭之时

题解类

AtCoder 官方比赛

难度评分依据：AtCoder Problems by kenkoooo\color{ffc116}\texttt{kenkoooo}。
  1. [ABC021C] 正直者の高橋くん 题解\color{00c0c0}\texttt{[ABC021C] 正直者の高橋くん 题解}
  2. [ABC033C] 数式の書き換え 题解\color{Brown}\texttt{[ABC033C] 数式の書き換え 题解}
  3. [ABC128E] Roadwork 题解\color{Blue}\texttt{[ABC128E] Roadwork 题解}
  4. [ABC228E] Integer Sequence Fair 题解\color{00c0c0}\texttt{[ABC228E] Integer Sequence Fair 题解}
  5. [ABC246E] Bishop 2 题解\color{00c0c0}\texttt{[ABC246E] Bishop 2 题解}
  6. [ABC247E] Max Min 题解\color{00c0c0}\texttt{[ABC247E] Max Min 题解}
  7. [ABC248D] Range Count Query 题解\color{Brown}\texttt{[ABC248D] Range Count Query 题解}
  8. [ABC248E] K-colinear Line 题解\color{00c0c0}\texttt{[ABC248E] K-colinear Line 题解}
  9. [ABC252E] Road Reduction 题解\color{00c0c0}\texttt{[ABC252E] Road Reduction 题解}
  10. [ABC259E] LCM on Whiteboard 题解\color{00c0c0}\texttt{[ABC259E] LCM on Whiteboard 题解}
  11. [ABC262E] Red and Blue Graph 题解\color{Blue}\texttt{[ABC262E] Red and Blue Graph 题解}
  12. [ABC265E] Warp 题解\color{00c0c0}\texttt{[ABC265E] Warp 题解}
  13. [ABC266E] Throwing the Die 题解\color{00c0c0}\texttt{[ABC266E] Throwing the Die 题解}
  14. [ABC268D] Unique Username 题解\color{00c0c0}\texttt{[ABC268D] Unique Username 题解}
  15. [ABC268F] Best Concatenation 题解\color{Blue}\texttt{[ABC268F] Best Concatenation 题解}
  16. [ABC270E] Apple Baskets on Circle 题解\color{00c0c0}\texttt{[ABC270E] Apple Baskets on Circle 题解}
  17. [ABC275D] Yet Another Recursive Function 题解\color{Brown}\texttt{[ABC275D] Yet Another Recursive Function 题解}
  18. [ABC275E] Sugoroku 4 题解\color{00c0c0}\texttt{[ABC275E] Sugoroku 4 题解}
  19. [ABC276D] Divide by 2 or 3 题解\color{Brown}\texttt{[ABC276D] Divide by 2 or 3 题解}
  20. [ABC276E] Round Trip 题解\color{Green}\texttt{[ABC276E] Round Trip 题解}
  21. [ABC278E] Grid Filling 题解\color{Green}\texttt{[ABC278E] Grid Filling 题解}
  22. [ABC279E] Cheating Amidakuji 题解\color{00c0c0}\texttt{[ABC279E] Cheating Amidakuji 题解}
  23. [ABC280E] Critical Hit 题解\color{00c0c0}\texttt{[ABC280E] Critical Hit 题解}
  24. [ABC281E] Least Elements 题解\color{00c0c0}\texttt{[ABC281E] Least Elements 题解}
  25. [ABC284C] Count Connected Components 题解\color{Brown}\texttt{[ABC284C] Count Connected Components 题解}
  26. [ABC284E] Count Simple Paths 题解\color{Green}\texttt{[ABC284E] Count Simple Paths 题解}
  27. [ABC285D] Change Usernames 题解\color{Brown}\texttt{[ABC285D] Change Usernames 题解}
  28. [ABC285E] Work or Rest 题解\color{00c0c0}\texttt{[ABC285E] Work or Rest 题解}
  29. [ABC287E] Karuta 题解\color{Green}\texttt{[ABC287E] Karuta 题解}
  30. [ABC291E] Find Permutation 题解\color{Green}\texttt{[ABC291E] Find Permutation 题解}
  31. [ABC292E] Transitivity 题解\color{00c0c0}\texttt{[ABC292E] Transitivity 题解}
  32. [ABC293E] Geometric Progression 题解\color{00c0c0}\texttt{[ABC293E] Geometric Progression 题解}
  33. [ABC293G] Triple Index 题解\color{Blue}\texttt{[ABC293G] Triple Index 题解}
  34. [ABC300E] Dice Product 3 题解\color{00c0c0}\texttt{[ABC300E] Dice Product 3 题解}
  35. [ABC312G] Avoid Straight Line 题解\color{Blue}\texttt{[ABC312G] Avoid Straight Line 题解}
  36. [ABC313E] Duplicate 题解\color{Blue}\texttt{[ABC313E] Duplicate 题解}
  37. [ABC314F] A Certian Game 题解\color{Blue}\texttt{[ABC314F] A Certian Game 题解}
  38. [ABC323E] Playlist 题解\color{00c0c0}\texttt{[ABC323E] Playlist 题解}
  39. [ABC330F] Minimize Bounding Square 题解\color{Blue}\texttt{[ABC330F] Minimize Bounding Square 题解}
  40. [ABC332F] Random Update Query 题解\color{Blue}\texttt{[ABC332F] Random Update Query 题解}
  41. [ABC337G] Tree Inversion 题解\color{ffc116}\texttt{[ABC337G] Tree Inversion 题解}
  42. [ABC339F] Product Equality 题解\color{Blue}\texttt{[ABC339F] Product Equality 题解}
  43. [ABC344G] Points and Comparison 题解\color{Red}\texttt{[ABC344G] Points and Comparison 题解}
  44. [ABC350F] Transpose 题解\color{Blue}\texttt{[ABC350F] Transpose 题解}
  45. [ABC350G] Mediator 题解\color{ffc116}\texttt{[ABC350G] Mediator 题解}
  46. [ABC354G] Select Strings 题解\color{ff8000}\texttt{[ABC354G] Select Strings 题解}
  47. [ABC359G] Sum of Tree Distance 题解\color{ffc116}\texttt{[ABC359G] Sum of Tree Distance 题解}
  48. [ABC361E] Tree and Hamilton Path 2 题解\color{00c0c0}\texttt{[ABC361E] Tree and Hamilton Path 2 题解}
  49. [ABC377E] Permute K times 2 题解\color{Blue}\texttt{[ABC377E] Permute K times 2 题解}
  50. [ABC403G] Odd Position Sum Query 题解\color{Blue}\texttt{[ABC403G] Odd Position Sum Query 题解}
  51. [ABC438G] Sum of Min 题解\color{ff8000}\texttt{[ABC438G] Sum of Min 题解}
  52. [ARC191D] Moving Pieces on Graph 题解\color{ff8000}\texttt{[ARC191D] Moving Pieces on Graph 题解}
  53. [ARC192D] Fraction Line 题解\color{ff8000}\texttt{[ARC192D] Fraction Line 题解}
  54. [ARC198D] Many Palindromes on Tree 题解\color{ffc116}\texttt{[ARC198D] Many Palindromes on Tree 题解}
  55. [ARC206C] Tree Sequence 题解\color{00c0c0}\texttt{[ARC206C] Tree Sequence 题解}
  56. [ARC208D] Symmetric Matrix 题解\color{Red}\texttt{[ARC208D] Symmetric Matrix 题解}
  57. [ARC212E] Drop Min 题解\color{ffc116}\texttt{[ARC212E] Drop Min 题解}
  58. [AGC008C] Tetromino Tiling 题解\color{Blue}\texttt{[AGC008C] Tetromino Tiling 题解}
  59. [AGC024C] Sequence Growing Easy 题解\color{00c0c0}\texttt{[AGC024C] Sequence Growing Easy 题解}
  60. [AGC025A] Digits Sum 题解\color{Gray}\texttt{[AGC025A] Digits Sum 题解}
  61. [AGC031A] Colorful Subsequence 题解\color{Green}\texttt{[AGC031A] Colorful Subsequence 题解}
  62. [AGC037E] Reversing and Concatenating 题解\color{ff8000}\texttt{[AGC037E] Reversing and Concatenating 题解}
  63. [AGC052A] Long Common Subsequence 题解\color{Brown}\texttt{[AGC052A] Long Common Subsequence 题解}
  64. [AGC056C] 01 Balanced 题解\color{ff8000}\texttt{[AGC056C] 01 Balanced 题解}
  65. [AGC058A] Make it Zigzag 题解\color{Green}\texttt{[AGC058A] Make it Zigzag 题解}
  66. [AGC058C] Planar Tree 题解\color{Red}\texttt{[AGC058C] Planar Tree 题解}
  67. [AGC063B] Insert 1, 2, 3, ... 题解\color{Blue}\texttt{[AGC063B] Insert 1, 2, 3, ... 题解}
  68. (ABC-Like) [SoundHound 2018 Qual D] Saving Snuuk 题解\color{Blue}\texttt{[SoundHound 2018 Qual D] Saving Snuuk 题解}
  69. (ABC-Like) [JSC2021G] Spanning Tree 题解\color{ff8000}\texttt{[JSC2021G] Spanning Tree 题解}
  70. (AGC-Like) [Mujin17A] Robot Racing 题解\color{Blue}\texttt{[Mujin17A] Robot Racing 题解}
  71. (AGC-Like) [APC001H] Generalized Insertion Sort 题解\color{Red}\texttt{[APC001H] Generalized Insertion Sort 题解}
  72. [AHC023A] Crops on Grid 题解\color{Red}\texttt{[AHC023A] Crops on Grid 题解}

AtCoder 其他比赛

  1. [AtCoder JU204A] Walking Takahashi 题解
  2. [TOYOTA 2023 Spring Final A] Area Sum 题解
  3. [TOYOTA 2023 Spring Final C] Count Dividing XOR 题解
  4. [CodeQUEEN2023 Final E] Good Partition 题解
  5. [Paken Camp 2023 Day 1] + and Xor 题解
  6. [KUPC2013 I] σ 题解
  7. [KUPC2014 G] Darkroom 题解
  8. [Iroha 2019 Day1 K] ルーレット 题解
  9. [Iroha 2019 Day3 D] おにごっこ 题解
  10. [JOISC 2017 Day1] 港湾设备 题解

Codeforces

难度评分依据：Codeforces 官方。
  1. CF38D Vasya the Architect 题解\color{Purple}\texttt{CF38D Vasya the Architect 题解}
  2. CF241G Challenging Balloons 题解\color{Purple}\texttt{CF241G Challenging Balloons 题解}
  3. CF340E Iahub and Permutations 题解\color{Purple}\texttt{CF340E Iahub and Permutations 题解}
  4. CF490D Chocolate 题解\color{Purple}\texttt{CF490D Chocolate 题解}
  5. CF958A2 Death Stars (medium) 题解\color{Purple}\texttt{CF958A2 Death Stars (medium) 题解}
  6. CF1012D AB-Strings 题解 \color{Red}\texttt{CF1012D AB-Strings 题解 }
  7. CF1044B Intersecting Subtrees 题解\color{Purple}\texttt{CF1044B Intersecting Subtrees 题解}
  8. CF1163C1 Power Transmission (Easy Ver.) 题解\color{Purple}\texttt{CF1163C1 Power Transmission (Easy Ver.) 题解}
  9. CF1219G Harvester 题解\color{Purple}\texttt{CF1219G Harvester 题解}
  10. CF1633C Kill the Monster 题解\color{Gray}\texttt{CF1633C Kill the Monster 题解}
  11. CF1634A Reverse and Concatenate 题解\color{Gray}\texttt{CF1634A Reverse and Concatenate 题解}
  12. CF1637A Sorting Parts 题解\color{Gray}\texttt{CF1637A Sorting Parts 题解}
  13. CF1638A Reverse 题解\color{Gray}\texttt{CF1638A Reverse 题解}
  14. CF1642A Hard Way 题解\color{Gray}\texttt{CF1642A Hard Way 题解}
  15. CF1650A Deletions of Two Adjacent Letters 题解\color{Gray}\texttt{CF1650A Deletions of Two Adjacent Letters 题解}
  16. CF1656F Parametric MST 题解\color{Red}\texttt{CF1656F Parametric MST 题解}
  17. CF1675A Food for Animals 题解\color{Gray}\texttt{CF1675A Food for Animals 题解}
  18. CF1675E Replace With the Previous, Minimize 题解\color{00c0c0}\texttt{CF1675E Replace With the Previous, Minimize 题解}
  19. CF1705A Mark the Photographer 题解\color{Gray}\texttt{CF1705A Mark the Photographer 题解}
  20. CF1714A Everyone Loves to Sleep 题解\color{Gray}\texttt{CF1714A Everyone Loves to Sleep 题解}
  21. CF1720A Burenka Plays with Fractions 题解\color{Gray}\texttt{CF1720A Burenka Plays with Fractions 题解}
  22. CF1720C Corners 题解\color{Green}\texttt{CF1720C Corners 题解}
  23. CF1729E Guess the Cycle Size 题解\color{Blue}\texttt{CF1729E Guess the Cycle Size 题解}
  24. CF1734A Select Three Sticks 题解\color{Gray}\texttt{CF1734A Select Three Sticks 题解}
  25. CF1734C Removing Smallest Multiples 题解\color{Green}\texttt{CF1734C Removing Smallest Multiples 题解}
  26. CF1734E Rectangular Congruence 题解\color{ff8000}\texttt{CF1734E Rectangular Congruence 题解}
  27. CF1773A Amazing Trick 题解\color{Purple}\texttt{CF1773A Amazing Trick 题解}
  28. CF1773E Easy Assembly 题解\color{00c0c0}\texttt{CF1773E Easy Assembly 题解}
  29. CF1784B Letter Exchange 题解\color{Purple}\texttt{CF1784B Letter Exchange 题解}
  30. CF1797D Li Hua and Tree 题解\color{Purple}\texttt{CF1797D Li Hua and Tree 题解}
  31. CF1817B Fish Graph 题解\color{Purple}\texttt{CF1817B Fish Graph 题解}
  32. CF1819B The Butcher 题解\color{Purple}\texttt{CF1819B The Butcher 题解}
  33. CF1822G1 Magic Triples (Easy Ver.) 题解\color{Blue}\texttt{CF1822G1 Magic Triples (Easy Ver.) 题解}
  34. CF1824B1 LuoTianyi and the Floating Islands (Easy Ver.) 题解\color{Blue}\texttt{CF1824B1 LuoTianyi and the Floating Islands (Easy Ver.) 题解}
  35. CF1842D Tenzing and His Animal Friends 题解\color{Purple}\texttt{CF1842D Tenzing and His Animal Friends 题解}
  36. CF1888C You Are So Beautiful 题解\color{Blue}\texttt{CF1888C You Are So Beautiful 题解}
  37. CF1888D Dances 题解\color{Purple}\texttt{CF1888D Dances 题解}
  38. CF1888E Time Travel 题解\color{Purple}\texttt{CF1888E Time Travel 题解}
  39. CF1889C1 Doremy’s Drying Plan (Easy Ver.) 题解\color{Purple}\texttt{CF1889C1 Doremy's Drying Plan (Easy Ver.) 题解}
  40. CF1899G Unusual Entertainment 题解\color{Purple}\texttt{CF1899G Unusual Entertainment 题解}
  41. CF1902E Collapsing Strings 题解\color{Purple}\texttt{CF1902E Collapsing Strings 题解}
  42. CF1903E Geo Game 题解\color{Purple}\texttt{CF1903E Geo Game 题解}
  43. CF1906B Button Pressing 题解\color{Red}\texttt{CF1906B Button Pressing 题解}
  44. CF1906E Merge Not Sort 题解\color{Purple}\texttt{CF1906E Merge Not Sort 题解}
  45. CF1906I Contingency Plan 2 题解\color{Red}\texttt{CF1906I Contingency Plan 2 题解}
  46. CF1912D Divisibility Test 题解\color{Purple}\texttt{CF1912D Divisibility Test 题解}
  47. CF1919D 01 Tree 题解\color{ff8000}\texttt{CF1919D 01 Tree 题解}
  48. CF1928D Lonely Mountain Dungeons 题解\color{Purple}\texttt{CF1928D Lonely Mountain Dungeons 题解}
  49. CF1939B Evidence Board 题解\color{ff8000}\texttt{CF1939B Evidence Board 题解}
  50. CF1939C More Gifts 题解\color{ff8000}\texttt{CF1939C More Gifts 题解}
  51. CF1945G Cook and Porridge 题解\color{Red}\texttt{CF1945G Cook and Porridge 题解}
  52. CF1956E1 Nene vs. Monsters (Easy Ver.) 题解\color{Red}\texttt{CF1956E1 Nene vs. Monsters (Easy Ver.) 题解}
  53. CF1970B2 Exact Neighbours (Medium) 题解\color{ff8000}\texttt{CF1970B2 Exact Neighbours (Medium) 题解}
  54. CF1970D1 Arithmancy (Easy) 题解\color{ff8000}\texttt{CF1970D1 Arithmancy (Easy) 题解}
  55. CF1970D2 Arithmancy (Medium) 题解\color{Red}\texttt{CF1970D2 Arithmancy (Medium) 题解}
  56. CF1970E2 Trails (Medium) 题解\color{Purple}\texttt{CF1970E2 Trails (Medium) 题解}
  57. CF1970F2 Playing Quidditch (Medium) 题解\color{ff8000}\texttt{CF1970F2 Playing Quidditch (Medium) 题解}
  58. CF1981E Turtle and Intersected Segments 题解\color{Red}\texttt{CF1981E Turtle and Intersected Segments 题解}
  59. CF2052E Expression Correction 题解\color{Purple}\texttt{CF2052E Expression Correction 题解}
  60. CF2052M Managing Cluster 题解\color{Red}\texttt{CF2052M Managing Cluster 题解}
  61. CF2079B Arithmetic Exercise 题解\color{Red}\texttt{CF2079B Arithmetic Exercise 题解}
  62. CF2079C Dreaming Is Not Harmful 题解\color{ff8000}\texttt{CF2079C Dreaming Is Not Harmful 题解}

USACO

难度评分依据：洛谷官方。以下题库皆同。
  1. [USACO23JAN] Following Directions S 题解\color{ffc116}\texttt{[USACO23JAN] Following Directions S 题解}
  2. [USACO23JAN] Moo Route S 题解\color{ff8000}\texttt{[USACO23JAN] Moo Route S 题解}
  3. [USACO23OPEN] Field Day S 题解\color{Green}\texttt{[USACO23OPEN] Field Day S 题解}
  4. [USACO23OPEN] Custodial Cleanup G 题解\color{Blue}\texttt{[USACO23OPEN] Custodial Cleanup G 题解}
  5. [USACO23OPEN] Tree Merging G 题解\color{Blue}\texttt{[USACO23OPEN] Tree Merging G 题解}
  6. [USACO24JAN] Walking in Manhattan G 题解\color{Blue}\texttt{[USACO24JAN] Walking in Manhattan G 题解}
  7. [USACO24OPEN] Grass Segments G 题解\color{Purple}\texttt{[USACO24OPEN] Grass Segments G 题解}
  8. [USACO25JAN] Median Heap G 题解\color{Blue}\texttt{[USACO25JAN] Median Heap G 题解}
  9. [USACO25OPEN] Election Queries G 题解\color{Blue}\texttt{[USACO25OPEN] Election Queries G 题解}
  10. [USACO26JAN1] Milk Buckets G 题解\color{Blue}\texttt{[USACO26JAN1] Milk Buckets G 题解}

洛谷主题库 其他

  1. P2076 曼哈顿距离最小生成树 题解\color{Blue}\texttt{P2076 曼哈顿距离最小生成树 题解}
  2. P2086 [NOI2012] 魔幻棋盘 题解\color{Darkblue}\texttt{P2086 [NOI2012] 魔幻棋盘 题解}
  3. P2462 [SDOI2007] 游戏 题解\color{Purple}\texttt{P2462 [SDOI2007] 游戏 题解}
  4. P6342 [CCO2017 Day 1] Vera 与道路建设 题解\color{Blue}\texttt{P6342 [CCO2017 Day 1] Vera 与道路建设 题解}
  5. P7942 [Wdcfr-1] CONsecutive and CONcat (easy ver.) 题解\color{Green}\texttt{P7942 [Wdcfr-1] CONsecutive and CONcat (easy ver.) 题解}
  6. P8115 [RdOI R3.5] Table 题解\color{Red}\texttt{P8115 [RdOI R3.5] Table 题解}
  7. P8148 声海 | Sea of Voices 题解\color{Green}\texttt{P8148 声海 | Sea of Voices 题解}
  8. P8152 [PMOI-5] 破译の论 题解\color{Red}\texttt{P8152 [PMOI-5] 破译の论 题解}
  9. P8219 [WFOI-02] I wanna a feasitor 题解\color{Red}\texttt{P8219 [WFOI-02] I wanna a feasitor 题解}
  10. P8361 [SNOI2022] 倍增 题解\color{Purple}\texttt{P8361 [SNOI2022] 倍增 题解}
  11. P8843 [传智杯 #4 初赛] 萝卜数据库 题解\color{ff8000}\texttt{P8843 [传智杯 \#4 初赛] 萝卜数据库 题解}
  12. P8865 [NOIP2022] 种花 题解\color{Green}\texttt{P8865 [NOIP2022] 种花 题解}
  13. P8940 [SSOI2023 easy Round] C. 不见故人 题解\color{Green}\texttt{P8940 [SSOI2023 easy Round] C. 不见故人 题解}
  14. P8966 觅光 | Searching for Hope (Easy Ver.) 题解\color{Green}\texttt{P8966 觅光 | Searching for Hope (Easy Ver.) 题解}
  15. P9031 [COCI2022-2023 #1] Iksevi 题解\color{Blue}\texttt{P9031 [COCI2022-2023 \#1] Iksevi 题解}
  16. P9177 [COCI2022-2023 #5] Kalendar 题解\color{Red}\texttt{P9177 [COCI2022-2023 \#5] Kalendar 题解}
  17. P9178 [COCI2022-2023 #5] Diskurs 题解\color{Green}\texttt{P9178 [COCI2022-2023 \#5] Diskurs 题解}
  18. P9217 [TAOI-1] 拼凑的断音 题解\color{ffc116}\texttt{P9217 [TAOI-1] 拼凑的断音 题解}
  19. P9233 [蓝桥杯 2023 省 A] 颜色平衡树 题解\color{Blue}\texttt{P9233 [蓝桥杯 2023 省 A] 颜色平衡树 题解}
  20. P9306 [DTOI-5] 进行一个排的重 (Min Ver.) 题解\color{ffc116}\texttt{P9306 [DTOI-5] 进行一个排的重 (Min Ver.) 题解}
  21. P9311 [EGOI2021] Twin Cookies 题解\color{Green}\texttt{P9311 [EGOI2021] Twin Cookies 题解}
  22. P9319 [EGOI2022] Social Engineering 题解\color{Purple}\texttt{P9319 [EGOI2022] Social Engineering 题解}
  23. P9393 紫丁香 题解\color{Purple}\texttt{P9393 紫丁香 题解}
  24. P9457 [入门赛 #14] 魔法少女扶苏 (Hard Ver.) 题解\color{ffc116}\texttt{P9457 [入门赛 \#14] 魔法少女扶苏 (Hard Ver.) 题解}
  25. P9759 [COCI2022-2023 #3] Bomboni 题解\color{Blue}\texttt{P9759 [COCI2022-2023 \#3] Bomboni 题解}
  26. P9763 [ROIR2021 Day 1] 基因突变 题解\color{Green}\texttt{P9763 [ROIR2021 Day 1] 基因突变 题解}
  27. P9785 [ROIR2020 Day 1] 对常规的斗争 题解\color{Green}\texttt{P9785 [ROIR2020 Day 1] 对常规的斗争 题解}
  28. P9640 [SNCPC2019] Digit Mode 题解\color{Blue}\texttt{P9640 [SNCPC2019] Digit Mode 题解}
  29. P9683 A Certain Forbidden Index 题解\color{Purple}\texttt{P9683 A Certain Forbidden Index 题解}
  30. P9716 [ECF2022] Coloring 题解\color{Purple}\texttt{P9716 [ECF2022] Coloring 题解}
  31. P9723 [ECF2022] Chinese Checker 题解\color{Blue}\texttt{P9723 [ECF2022] Chinese Checker 题解}
  32. P9724 [ECF2022] Chase Game 题解\color{Blue}\texttt{P9724 [ECF2022] Chase Game 题解}
  33. P9793 [NERC2018] Cactus Search 题解\color{Blue}\texttt{P9793 [NERC2018] Cactus Search 题解}
  34. P9878 [ECF2021] Check Pattern is Bad 题解\color{Purple}\texttt{P9878 [ECF2021] Check Pattern is Bad 题解}
  35. P9913 [RiOI-03] water problem 题解\color{ffc116}\texttt{P9913 [RiOI-03] water problem 题解}
  36. P9916 [RiOI-03] Just a Q. (Easy Ver.) 题解\color{Purple}\texttt{P9916 [RiOI-03] Just a Q. (Easy Ver.) 题解}
  37. P9934 [NFLSPC #6] 绝不能忘记的事…… 题解\color{Blue}\texttt{P9934 [NFLSPC \#6] 绝不能忘记的事…… 题解}
  38. P10033 [Cfz Round 3] Sum of Permutation 题解\color{Green}\texttt{P10033 [Cfz Round 3] Sum of Permutation 题解}
  39. P10080 [GDKOI2024 提高组] 匹配 题解\color{Purple}\texttt{P10080 [GDKOI2024 提高组] 匹配 题解}
  40. P10096 [ROIR2023 Day 1] 扫地机器人 题解\color{Blue}\texttt{P10096 [ROIR2023 Day 1] 扫地机器人 题解}
  41. P10062 [SNOI2024] 拉丁方 题解\color{DarkBlue}\texttt{P10062 [SNOI2024] 拉丁方 题解}
  42. P10227 [COCI2023-2024 #3] Slucˇajna Cesta 题解\color{Green}\texttt{P10227 [COCI2023-2024 \#3] Slučajna Cesta 题解}
  43. P10391 [蓝桥杯 2024 省 A] 零食采购 题解\color{Green}\texttt{P10391 [蓝桥杯 2024 省 A] 零食采购 题解}
  44. P10430 [JOISC2024 Day 1] 鱼 3 题解\color{Purple}\texttt{P10430 [JOISC2024 Day 1] 鱼 3 题解}
  45. P10537 [APIO2024] 九月 题解\color{Green}\texttt{P10537 [APIO2024] 九月 题解}
  46. P10642 [BalticOI2022 Day 1] Art Collection 题解\color{Blue}\texttt{P10642 [BalticOI2022 Day 1] Art Collection 题解}
  47. P10650 [ROI2017 Day 1] 排序幻觉 题解\color{Blue}\texttt{P10650 [ROI2017 Day 1] 排序幻觉 题解}
  48. P10692 [SNCPC2024] 表达式矩阵 题解\color{Blue}\texttt{P10692 [SNCPC2024] 表达式矩阵 题解}
  49. P10846 [EGOI2024] Team Coding 题解\color{Purple}\texttt{P10846 [EGOI2024] Team Coding 题解}
  50. P11025 [COTS/CETS2020] 辣椒 Sadnice 题解\color{Purple}\texttt{P11025 [COTS/CETS2020] 辣椒 Sadnice 题解}
  51. P11202 [JOIG2024] 名前 / Name 题解\color{Blue}\texttt{P11202 [JOIG2024] 名前 / Name 题解}
  52. P11261 [COTS/CETS2018] 直方图 Histogram 题解\color{Blue}\texttt{P11261 [COTS/CETS2018] 直方图 Histogram 题解}
  53. P11337 [COI2019] IZLET 题解\color{Purple}\texttt{P11337 [COI2019] IZLET 题解}
  54. P11354 [eJOI2023] Tree Search 题解\color{Blue}\texttt{P11354 [eJOI2023] Tree Search 题解}
  55. P11607 [PA2016] 寻踪 / Ciepło-zimno 题解\color{Blue}\texttt{P11607 [PA2016] 寻踪 / Ciepło-zimno 题解}
  56. P11686 [JOIGST2024] 相聚 题解\color{ffc116}\texttt{P11686 [JOIGST2024] 相聚 题解}
  57. P11687 [JOIGST2024] 年轮蛋糕 2 题解\color{Blue}\texttt{P11687 [JOIGST2024] 年轮蛋糕 2 题解}
  58. P11699 [ROIR2025 Day 1] 酸雨 题解\color{Purple}\texttt{P11699 [ROIR2025 Day 1] 酸雨 题解}
  59. P11753 [COCI2024/2025 #5] 塔楼 / Tornjevi 题解\color{Green}\texttt{P11753 [COCI2024/2025 \#5] 塔楼 / Tornjevi 题解}
  60. P11755 [COCI2024/2025 #5] 树树 2 / Stablo II 题解\color{Blue}\texttt{P11755 [COCI2024/2025 \#5] 树树 2 / Stablo II 题解}
  61. P11985 [JOIST2025 Day 1] 比太郎之旅 2 题解\color{Purple}\texttt{P11985 [JOIST2025 Day 1] 比太郎之旅 2 题解}
  62. P11989 [JOIST2025 Day 3] 勇者比太郎 3 题解\color{DarkBlue}\texttt{P11989 [JOIST2025 Day 3] 勇者比太郎 3 题解}
  63. P11991 [JOIST2025 Day 3] 多方通信 题解\color{Purple}\texttt{P11991 [JOIST2025 Day 3] 多方通信 题解}
  64. P12306 [ICPC2022WF] Doing the Container Shuffle 题解\color{Blue}\texttt{P12306 [ICPC2022WF] Doing the Container Shuffle 题解}
  65. P12438 [NERC2023] Great City Saint Petersburg 题解\color{Blue}\texttt{P12438 [NERC2023] Great City Saint Petersburg 题解}
  66. P12546 [UOI2025] Convex Array 题解\color{Purple}\texttt{P12546 [UOI2025] Convex Array 题解}
  67. P12553 [UOI2024] Lady’s Gift 题解\color{Purple}\texttt{P12553 [UOI2024] Lady's Gift 题解}
  68. P12934 [NERC2019] Apprentice Learning Trajectory 题解\color{Blue}\texttt{P12934 [NERC2019] Apprentice Learning Trajectory 题解}
  69. P12939 [NERC2019] Foolpru¨f Security 题解\color{Purple}\texttt{P12939 [NERC2019] Foolprüf Security 题解}
  70. P12967 [CCO2025] Tree Decorations 题解\color{Blue}\texttt{P12967 [CCO2025] Tree Decorations 题解}
  71. P12959 [GCJFR #3] The Decades of Coding Competitions 题解\color{Green}\texttt{P12959 [GCJFR \#3] The Decades of Coding Competitions 题解}
  72. P12999 [GCJ2022 #3] Mascot Maze 题解\color{Blue}\texttt{P12999 [GCJ2022 \#3] Mascot Maze 题解}
  73. P13040 [GCJ2021 #3] Square Free 题解\color{Purple}\texttt{P13040 [GCJ2021 \#3] Square Free 题解}
  74. P13068 [GCJ2020 #3] Pen Testing 题解\color{Purple}\texttt{P13068 [GCJ2020 \#3] Pen Testing 题解}
  75. P13121 [GCJ2019 #3] Datacenter Duplex 题解\color{Purple}\texttt{P13121 [GCJ2019 \#3] Datacenter Duplex 题解}
  76. P13340 [EGOI2025] Dark Ride 题解\color{Blue}\texttt{P13340 [EGOI2025] Dark Ride 题解}
  77. P13527 [OOI2023] n 维巧克力问题 题解\color{Purple}\texttt{P13527 [OOI2023] n 维巧克力问题 题解}
  78. P13571 [CCPC2024 Chongqing] 有限小数 题解\color{Blue}\texttt{P13571 [CCPC2024 Chongqing] 有限小数 题解}
  79. P13573 [CCPC2024 Chongqing] Pico Park 题解\color{DarkBlue}\texttt{P13573 [CCPC2024 Chongqing] Pico Park 题解}
  80. P13783 [eJOI2022] Bounded Spanning Tree 题解\color{Purple}\texttt{P13783 [eJOI2022] Bounded Spanning Tree 题解}
  81. P13840 杏酥桐 题解\color{Purple}\texttt{P13840 杏酥桐 题解}
  82. P13999 [eJOI2025] Collecting Diamonds 题解\color{Blue}\texttt{P13999 [eJOI2025] Collecting Diamonds 题解}
  83. P14250 [集训队互测 2025] 携春同行 题解\color{DarkBlue}\texttt{P14250 [集训队互测 2025] 携春同行 题解}
  84. P14468 [COCI2025/2026 #1] 和谐 / Harmonija 题解\color{Purple}\texttt{P14468 [COCI2025/2026 \#1] 和谐 / Harmonija 题解}
  85. P14537 [OII2025] 双色金字塔 题解\color{Purple}\texttt{P14537 [OII2025] 双色金字塔 题解}
  86. P14779 [COCI2025/2026 #3] 宴会 / Domjenak 题解\color{Blue}\texttt{P14779 [COCI2025/2026 \#3] 宴会 / Domjenak 题解}
  87. P14801 [CCPC2024 Harbin] 造计算机 题解\color{Blue}\texttt{P14801 [CCPC2024 Harbin] 造计算机 题解}
  88. P14682 [ICPC2025 Yokohama] Seagull Population 题解\color{Blue}\texttt{P14682 [ICPC2025 Yokohama] Seagull Population 题解}
  89. P15061 琥峪枫 题解\color{Purple}\texttt{P15061 琥峪枫 题解}

洛谷入门与面试题库

  1. B3801 [NICA #1] 乘只因 题解\color{Green}\texttt{B3801 [NICA \#1] 乘只因 题解}
  2. B3902 [NICA #3] 数计组数 题解\color{Green}\texttt{B3902 [NICA \#3] 数计组数 题解}
  3. B3982 [信息与未来 2024] 数据排序 题解\color{ffc116}\texttt{B3982 [信息与未来 2024] 数据排序 题解}

SPOJ

  1. SP206 BITMAP - Bitmap 题解\color{ff8000}\texttt{SP206 BITMAP - Bitmap 题解}
  2. SP726 PRO - Promotion 题解\color{Green}\texttt{SP726 PRO - Promotion 题解}
  3. SP6818 CAPCITY - Capital City 题解\color{Blue}\texttt{SP6818 CAPCITY - Capital City 题解}
  4. SP9534 JZPLIT - Turn on the lights 题解\color{Purple}\texttt{SP9534 JZPLIT - Turn on the lights 题解}
  5. SP10589 KING - King 题解\color{Purple}\texttt{SP10589 KING - King 题解}
  6. SP11391 EASYMATH - EASY MATH 题解\color{Green}\texttt{SP11391 EASYMATH - EASY MATH 题解}
  7. SP11736 PTIME - Prime Time 题解\color{Green}\texttt{SP11736 PTIME - Prime Time 题解}
  8. SP31290 MATHLOVE - Math is Love 题解\color{ff8000}\texttt{SP31290 MATHLOVE - Math is Love 题解}
  9. SP32088 CSTATE1 - Chessboard State 1 题解\color{Green}\texttt{SP32088 CSTATE1 - Chessboard State 1 题解}

其他 OJ

  1. 组合最值之主教问题 / QOJ7178 Bishops 题解
  2. [Yandex Cup 2024 Qual F] Zeroth Rome 题解

教程 / 笔记 / 模板库类

  1. IAOI 模板库
  2. 如何正确食用 STL 自带二分
  3. 2024 年 USACO 金组冲刺计划 / 配套题单训练 (Private)
  4. 杂题选讲 #1：二分图边着色
  5. 杂题选讲 #2：广义串并联图
  6. 做题记录 #1：CCPC2024 重庆站
  7. 做题记录 #2：The 2nd Universal Cup. Stage 2: SPb
  8. 做题记录 #3：The 2025 ICPC AEC Online Contest (I)
  9. 做题记录 #4：The 2025 ICPC Asia Yokohama Regional Contest

游记类

  1. CSP-S 2022 游记
  2. 福建省 NOI 2023 省队集训游记
  3. 联合省选 2024 游记
  4. NOI 2024 志愿者游记
  5. CSP-S 2024 游记
  6. Yandex Cup 2024 Semifinal 游记
  7. PKUWC & NOIWC 2025 游记
  8. 联合省选 2025 游记
  9. 山东省 NOI 2025 第二轮省队集训游记
  10. NOI 2025 游记
  11. NOIP 2025 退役记

活动类

  1. 莆田市 AtCoder Race Ranking 2023 Summer
  2. “双人 / 多人对战式”数学竞赛规则
  3. 莆田市 AtCoder Race Ranking 2023 Autumn

个人类

  1. 个人代码风格相关
  2. 2022 年度总结
  3. 闲话 #1: 班级周记
  4. 闲话 #2: 班级周记 Ex（非脱敏版）
  5. 2023 年度总结
  6. 闲话 #3: The 1st Raozhu Contest Announcement
  7. 闲话 #5: XVIII Open Olympiad in Informatics - Final Stage, Day 1 游记（迫真）
  8. 闲话 #6: Helvetic Coding Contest 2024 + 第六届图灵杯中级组游记（迫真）
  9. 闲话 #7: 浅谈种子选手
  10. 闲话 #8: Panasonic Programming Contests
  11. 闲话 #9: AGC042D Geometric Geometry 题解
  12. 闲话 #10: 从本人经历出发，谈谈 OIer 在外如何正确地处理突发事件
  13. 闲话 #11: 给 PTOIers 的最后一份礼物
  14. 闲话 #12: CJ 中学稳定发挥
  15. 闲话 #13: Yandex Cup 2024 Qualification 游记（迫真）
  16. 闲话 #14: Iranian Combinatorics Olympiad 2024 Day 1 游记（迫真）
  17. 闲话 #2341: 不赖
  18. 2024 年度总结
  19. 闲话 #15: XIX Open Olympiad in Informatics - Final Stage, Day 1 游记（迫真）
  20. 闲话 #16: JOIST 2025 游记（No）笑话集（Yes）
  21. 闲话 #17: 浮生二日

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