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Accepted problems：768 problems

3468122185192213218247367385427428433436437439441442499520552601602612613617618665674711785786787905906934956995996997999100210031004100510431061106511461147114811491150115111991219122012241227130113101313132213871432153616431768176917701771177417761777178017851786178717881789179018131909196619671968196919701971197219731974197519761977200920112012201720202066206821352142217822232263226422652267226922702271227222732281228222862290229123652369237824762477247824792481248224832484248625062507250825392540254125422543254425452546254725482549255125522553255625622563256825692572257325752583259325952596259826002601260226042605260726112612261326152616261726182619262126222625263127572782278327842796283628502854285928652868287028822883288428902891289429582960296129622964296529662972297329742975297729832985299930833101310331453241324232443247324932503251326432653267326833103501350235033504350635083510351138013845399840004007400840104011401240454046404740484050405240534055405840624063406441004114413641504163418142074212421742204223425142524321432243234405440645614562456546154629463146324633463446354636463746574660466146894693478047934794481449455025502650275028505350575069507051165120514851515152515351545156515751585159516051625163516451655179518951905195519652215337533853525455545654575458545954605461546254635464546554665495551455525657565856595684568556885690569461026103610461066107610861106112611361146115611661176119612061216122612361246125614161426144616562156216622362256226622762376238623962406241628862896290629163086311631263136332633463356336634663476348634963516352635364076409641064116412641464156416641765046520652765356536653865396541654365446547655565976649676067686808680968106812681468176818681968206967696870037005700670097010701370157029703070327033703470367037703870407066727673437345734673477348735173527434743574367440744174457446744874507452745374557468747074717474749575007502775178447921792279247925792679277928792979307931796379657968796979737979798079867987798879907991799279937994799579968001801380148035804581348138819782588267832183248331841084128413841584168522853185328536853785388539854085418546859986008601860286318632863386348635863686378638868787148716871787198720872387398762876387649032905190529053905490559056905790589059906090619062906391829183918491859204923692379238924092419308930993109312931393149315931993209348939794049516961996209621962396249626962796289629963197399740974197429743974497459746974797489749975097519824982698279828982998309831983298339834983598369901990299039904990599289929993099319932993399349935993699379938100991010110107101081023510236102371023810239102401024110242102431024410245102461024710248102491025010252103101031210313103141031710319103201033910345103461045910736107371073810739107401074110742107431074410745107461074710748130791308013082130831323513236140161401714018140211445014451144521445314454144551445614457144581445914460144611450114502145031450414505145061450714508145091451014511145121451314743147441474514746147501475114752147531475415501155021588321302213042140321566216082180821810218112181221814218172182021821218252189221893219042190722059

Tried problems：39 problems

3634094646108981225132013211531153215331540165916601661201825542588283528773246465861407278734974427765793896229728105381308113084154601550321807218092181521818

Authored problems：14 problems

#Problem Name
1Binary vs Ternary
2Désive
3Haitang and Game
4Haitang and XOR Mex
5Haitang and Graph
6Haitang and Uma Musume
7Haitang and Math
8Haitang and Diameters
9Haitang and Rock Paper Scissors
10Haitang and Water
11Haitang and Ranking
12Haitang and Triangle
13Haitang and Ava
14Shiori

Virtual Participations：42 contests

NameStart time
IOI 2026 国家集训队集中培训 Day 1 (CTT 2025 Day 1)2025-12-07 10:26:03
（2025）第六届辽宁省大学生程序设计竞赛 (沈阳)2025-11-27 12:47:25
第十一届中国大学生程序设计竞赛 女生专场（CCPC 2025 Women's Division）2025-10-28 13:45:05
2025 CCPC 全国邀请赛（南昌）暨第二届江西省赛2025-09-15 14:12:46
(China) National Olympiad in Informatics 2025 Day 22025-07-21 18:18:04
(China) National Olympiad in Informatics 2025 Day 1 2025-07-21 12:55:08
The 3rd Universal Cup. Stage 37: Wuhan2025-05-12 21:37:48
2020-2021 ICPC Asia Pacific - Yokohama Regional2025-02-25 18:50:51
第八届中国大学生程序设计竞赛 广州站（CCPC 2022 Guangzhou Site）2025-02-25 18:22:51
The 2024 ICPC Northwestern Russia Regional Contest2025-01-13 14:50:19
北京大学 2024 年《数据结构与算法A（实验班）》期末考试2025-01-09 17:55:14
The 2023 ICPC Mid-Central USA Regional Contest (Div. 1)2024-11-28 13:46:53
第十届中国大学生程序设计竞赛 重庆站（CCPC 2024 Chongqing Site）2024-11-20 17:09:59
第八届中国大学生程序设计竞赛 桂林站（CCPC 2022 Guilin）2024-11-17 17:14:38
European Girls' Olympiad in Informatics 2024 Day 12024-10-31 08:47:49
The 2024 ICPC Asia East Continent Online Contest (I)2024-09-18 15:03:04
International Olympiad in Informatics 2016 Day 22024-08-23 13:37:00
International Olympiad in Informatics 2014 Day 12024-08-22 14:08:20
International Olympiad in Informatics 2014 Day 22024-08-22 12:30:15
THUPC 2022 Practice Contest #5: Mixed Contest 22024-06-21 08:33:45
Central European Olympiad in Informatics 2023 Day 1 (CEOI 2023 Day 1)2024-05-27 16:55:56
ICPCCamp 2017. Day 5. Yandex Cup 20172024-05-22 16:24:40
2024 北京市大学生程序设计竞赛2024-05-21 16:15:01
2024 小青鱼训练中心 Contest #4: fateice Contest2024-05-08 13:26:34
第二届“致理杯”程序设计大赛 (Div. 1)2024-05-08 08:21:05
2024 小青鱼训练中心 Contest #3: Haoba Contest 12024-05-07 13:37:35
2024 小青鱼训练中心 Contest #2: Shandong PTT Contest2024-05-06 14:10:51
Ukrainian Olympiads in Informatics 2024, Stage IV, Day 22024-04-29 16:52:34
2024 小青鱼训练中心 Contest #1: jiangly Contest2024-04-26 12:49:33
2024 年广东省重点中学信息学邀请赛 (GDKOI 2024) 提高组 第一试2024-01-17 16:32:41
2023 北京市大学生程序设计竞赛2024-01-17 12:14:06
ByteDance-Moscow Workshops Camp 2022. The Final Contest2024-01-16 08:22:21
The 2023 ICPC Asia Yokohama Regional Contest2023-12-12 16:47:07
The 2022 ICPC Northwestern Europe Regional Contest (NWERC 2022)2023-11-26 13:06:45
The 2020 ICPC Asia Yinchuan Regional Contest2023-11-26 12:58:35
The 2020 ICPC Asia Tehran Regional Contest2023-11-23 18:04:45
The 2018 ICPC Asia Xuzhou Regional Programming Contest2023-11-11 13:58:14
The 2018 ICPC Asia Jiaozuo Regional Programming Contest2023-11-07 15:00:02
The 22nd Japanese Olympiad in Informatics Spring Training Camp (JOISC 2022/2023) Day 22023-10-30 16:22:19
The 22nd Japanese Olympiad in Informatics Spring Training Camp (JOISC 2022/2023) Day 12023-05-10 17:06:51
The 2020 ICPC Central Europe Regional Contest (CERC 2020)2022-11-11 18:16:28
Petrozavodsk Summer 2022. Day 7. HSE Koresha Contest2022-09-29 21:11:28
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