Luogu 洛谷 (Luògǔ)

online judge luogu · all judges

site
https://www.luogu.com.cn/
status
active
problem url
https://www.luogu.com.cn/problem/{id}
contest url
https://www.luogu.com.cn/contest/{id}
offers
statements · submissions
notes
Official-team (洛谷官方团队) 重现赛 (chóngxiànsài, replay) mirrors of ICPC China regionals / EC-Final with original data (credit 计蒜客 Jisuanke), run 2023-2026 and ongoing (new one roughly weekly). Contest list JSON is embedded in <script id=lentille-context> on /contest/list?page=N (1404 contests, 71 pages); contest pages embed contestProblems with pid (P1xxxx) and titles. Some mirrors (Nanjing 2022-24, Jinan 2023, Kunming inv.) carry Chinese-translated titles. Statements viewable without login; submitting needs account.
coverage
32 contests with a judge page · 354 problems linking here
data
judges.yaml

Contest pages (32)

contestdatepage
aec-20192019-12-15https://www.luogu.com.cn/contest/273827live · wayback live
aec-20202021-04-18https://www.luogu.com.cn/contest/186299live · wayback live
aec-20212022-07-22https://www.luogu.com.cn/contest/145260live · wayback live
aec-20222023-03-26https://www.luogu.com.cn/contest/137295live · wayback live
chengdu-20242024-10-27https://www.luogu.com.cn/contest/305336live · wayback live
hangzhou-20242024-11-10https://www.luogu.com.cn/contest/281894live · wayback live
hong-kong-20172017-11-19https://www.luogu.com.cn/contest/340426live · wayback live
jiaozuo-20182018-11-25https://www.luogu.com.cn/contest/353129live · wayback live
jinan-20222022-11-27https://www.luogu.com.cn/contest/135030live · wayback live
jinan-20232023-12-03https://www.luogu.com.cn/contest/320257live · wayback live
macau-20212022-04-03https://www.luogu.com.cn/contest/134300live · wayback live
nanchang-20192019-11-29https://www.luogu.com.cn/contest/366008live · wayback live
nanjing-20182018-10-14https://www.luogu.com.cn/contest/353126live · wayback live
nanjing-20192019-10-27https://www.luogu.com.cn/contest/358584live · wayback live
nanjing-20202020-11-28https://www.luogu.com.cn/contest/130129live · wayback live
nanjing-20212021-12-05https://www.luogu.com.cn/contest/143839live · wayback live
nanjing-20222022-12-18https://www.luogu.com.cn/contest/278653live · wayback live
nanjing-20232023-11-05https://www.luogu.com.cn/contest/273805live · wayback live
nanjing-20242024-11-03https://www.luogu.com.cn/contest/275088live · wayback live
nanning-20172017-11-26https://www.luogu.com.cn/contest/344657live · wayback live
qingdao-20172017-11-05https://www.luogu.com.cn/contest/334256live · wayback live
qingdao-20182018-11-04https://www.luogu.com.cn/contest/146584live · wayback live
shanghai-2020https://www.luogu.com.cn/contest/142625live · wayback live
shanghai-20252025-11-23https://www.luogu.com.cn/contest/335418live · wayback live
shenyang-20172017-10-22https://www.luogu.com.cn/contest/334255live · wayback live
shenyang-20182018-10-21https://www.luogu.com.cn/contest/353127live · wayback live
urumqi-20172017-12-03https://www.luogu.com.cn/contest/349025live · wayback live
xian-20172017-10-29https://www.luogu.com.cn/contest/339238live · wayback live
xian-20252025-10-19https://www.luogu.com.cn/contest/289673live · wayback live
xuzhou-20182018-10-28https://www.luogu.com.cn/contest/353128live · wayback live
xuzhou-20192019-11-03https://www.luogu.com.cn/contest/366007live · wayback live
yinchuan-20192019-11-10https://www.luogu.com.cn/contest/358583live · wayback live

Problems (354)

problemjudge idlinksets
9102P17804Luogu 洛谷 (Luògǔ)nanchang-2019
<3 numbersP17733Luogu 洛谷 (Luògǔ)xuzhou-2019
A Funny Bipartite GraphP17805Luogu 洛谷 (Luògǔ)nanchang-2019
A Hard ProblemP17699Luogu 洛谷 (Luògǔ)nanjing-2019
A Possible TreeP17267Luogu 洛谷 (Luògǔ)urumqi-2017
AGIP17128Luogu 洛谷 (Luògǔ)shanghai-2025
AUSP14187Luogu 洛谷 (Luògǔ)hangzhou-2024
AbiyoyoP17211Luogu 洛谷 (Luògǔ)nanning-2017
AcediaP17154Luogu 洛谷 (Luògǔ)xian-2017
Adrien and AustinP17318Luogu 洛谷 (Luògǔ)nanjing-2018
Ah, It's Yesterday Once MoreP9622Luogu 洛谷 (Luògǔ)nanjing-2020
AirdropP9895Luogu 洛谷 (Luògǔ)qingdao-2018
All Pair Maximum FlowP13948Luogu 洛谷 (Luògǔ)aec-2019
AllinP10826Luogu 洛谷 (Luògǔ)aec-2020
Ancient Magic Circle in TeyvatP9850Luogu 洛谷 (Luògǔ)nanjing-2021
And and PairP17806Luogu 洛谷 (Luògǔ)nanchang-2019
AqreP9727Luogu 洛谷 (Luògǔ)aec-2022
Arrangement for ContestsP17153Luogu 洛谷 (Luògǔ)xian-2017
Arrow a RowP15072Luogu 洛谷 (Luògǔ)chengdu-2024
Athlete Welcome CeremonyP15073Luogu 洛谷 (Luògǔ)chengdu-2024
Attacker-Defender GameP17212Luogu 洛谷 (Luògǔ)nanning-2017
Azalea GardenP14447Luogu 洛谷 (Luògǔ)xian-2025
BBP FormulaP17065Luogu 洛谷 (Luògǔ)shenyang-2017
Baby's First Suffix Array ProblemP9623Luogu 洛谷 (Luògǔ)nanjing-2020
Banned PatternsP17214Luogu 洛谷 (Luògǔ)nanning-2017
Barkley IIIP14188Luogu 洛谷 (Luògǔ)hangzhou-2024
Base Station SitesP17185Luogu 洛谷 (Luògǔ)hong-kong-2017
Base62P17640Luogu 洛谷 (Luògǔ)yinchuan-2019
Battle in Two Pairs of HeroesP17092Luogu 洛谷 (Luògǔ)qingdao-2017
Beautiful DangosP14448Luogu 洛谷 (Luògǔ)xian-2025
Beautiful StringP9873Luogu 洛谷 (Luògǔ)aec-2021
Best ACMer Solves the Hardest ProblemP17398Luogu 洛谷 (Luògǔ)shenyang-2018
Best Carry PlayerP9679Luogu 洛谷 (Luògǔ)jinan-2022
Best Carry Player 2P9718Luogu 洛谷 (Luògǔ)aec-2022
Binary StringP9717Luogu 洛谷 (Luògǔ)aec-2022
BingoP14022Luogu 洛谷 (Luògǔ)nanjing-2024
Bitwise TreeP17807Luogu 洛谷 (Luògǔ)nanchang-2019
Black and WhiteP13939Luogu 洛谷 (Luògǔ)aec-2019
Black and WhiteP17182Luogu 洛谷 (Luògǔ)hong-kong-2017
Bob's ProblemP17808Luogu 洛谷 (Luògǔ)nanchang-2019
Books 099c9c8b-8b32-4a07-bf26-3c95470823ffP9894Luogu 洛谷 (Luògǔ)qingdao-2018
BridgeP17066Luogu 洛谷 (Luògǔ)shenyang-2017
Can You Solve the Harder Problem?P17473Luogu 洛谷 (Luògǔ)jiaozuo-2018
Card collectionP17184Luogu 洛谷 (Luògǔ)hong-kong-2017
Carpets RemovalP17475Luogu 洛谷 (Luògǔ)jiaozuo-2018
CatP17731Luogu 洛谷 (Luògǔ)xuzhou-2019
Catch the MonsterP14449Luogu 洛谷 (Luògǔ)xian-2025
Catch the StarP14189Luogu 洛谷 (Luògǔ)hangzhou-2024
Cats line upP17732Luogu 洛谷 (Luògǔ)xuzhou-2019
Certain Scientific RailgunP9624Luogu 洛谷 (Luògǔ)nanjing-2020
Chase GameP9724Luogu 洛谷 (Luògǔ)aec-2022
Chase Game 2P9725Luogu 洛谷 (Luògǔ)aec-2022
Check Pattern is BadP9878Luogu 洛谷 (Luògǔ)aec-2021
Check Pattern is GoodP9879Luogu 洛谷 (Luògǔ)aec-2021
Chenchen, Tangtang and ZengZengP17093Luogu 洛谷 (Luògǔ)qingdao-2017
Cherry and ChocolateP17320Luogu 洛谷 (Luògǔ)nanjing-2018
ChessboardP17700Luogu 洛谷 (Luògǔ)nanjing-2019
Chinese CheckerP9723Luogu 洛谷 (Luògǔ)aec-2022
Chinese ChessP15074Luogu 洛谷 (Luògǔ)chengdu-2024
CircleP10825Luogu 洛谷 (Luògǔ)aec-2020
CityP13938Luogu 洛谷 (Luògǔ)aec-2019
City BrainP10819Luogu 洛谷 (Luògǔ)aec-2020
Closest DerangementP15075Luogu 洛谷 (Luògǔ)chengdu-2024
Cloud Retainer's GameP9848Luogu 洛谷 (Luògǔ)nanjing-2021
CoinsP17259Luogu 洛谷 (Luògǔ)urumqi-2017
Collecting CentsP17094Luogu 洛谷 (Luògǔ)qingdao-2017
Colorful TreeP9665Luogu 洛谷 (Luògǔ)macau-2021
ColoringP9716Luogu 洛谷 (Luògǔ)aec-2022
Connected SubgraphsP17477Luogu 洛谷 (Luògǔ)jiaozuo-2018
Count NumbersP17266Luogu 洛谷 (Luògǔ)urumqi-2017
Count the Even IntegersP17189Luogu 洛谷 (Luògǔ)hong-kong-2017
Counting Failures on a TrieP17476Luogu 洛谷 (Luògǔ)jiaozuo-2018
Counting Sheep in Ami DongsuoP17397Luogu 洛谷 (Luògǔ)shenyang-2018
Country MeowP17321Luogu 洛谷 (Luògǔ)nanjing-2018
Crazy CakeP17644Luogu 洛谷 (Luògǔ)yinchuan-2019
Crystalfly 8796b664-ba8a-452e-9e51-e28dfb72a142P9847Luogu 洛谷 (Luògǔ)nanjing-2021
Cyclic BufferP9662Luogu 洛谷 (Luògǔ)macau-2021
DFS OrderP9872Luogu 洛谷 (Luògǔ)aec-2021
DFS Order 2P9669Luogu 洛谷 (Luògǔ)jinan-2022
Defense of the AncientsP17068Luogu 洛谷 (Luògǔ)shenyang-2017
Degree of Spanning TreeP9625Luogu 洛谷 (Luògǔ)nanjing-2020
Delivery RouteP17639Luogu 洛谷 (Luògǔ)yinchuan-2019
Diameter of a TreeP17395Luogu 洛谷 (Luògǔ)shenyang-2018
Digital PathP17701Luogu 洛谷 (Luògǔ)nanjing-2019
Dining ProfessorsP9728Luogu 洛谷 (Luògǔ)aec-2022
Directed Acyclic GraphP14450Luogu 洛谷 (Luògǔ)xian-2025
Dirichlet k -th rootP13940Luogu 洛谷 (Luògǔ)aec-2019
Disrupting CommunicationsP15076Luogu 洛谷 (Luògǔ)chengdu-2024
DistanceP17474Luogu 洛谷 (Luògǔ)jiaozuo-2018
Distance Between SweetheartsP17400Luogu 洛谷 (Luògǔ)shenyang-2018
Dividing SequenceP14190Luogu 洛谷 (Luògǔ)hangzhou-2024
Double 11P15077Luogu 洛谷 (Luògǔ)chengdu-2024
Dynamic Suffix ArrayP17809Luogu 洛谷 (Luògǔ)nanchang-2019
Easy ProblemP17635Luogu 洛谷 (Luògǔ)yinchuan-2019
Eating PlanP17810Luogu 洛谷 (Luògǔ)nanchang-2019
Elden RingP9881Luogu 洛谷 (Luògǔ)aec-2021
Elevator IIP14191Luogu 洛谷 (Luògǔ)hangzhou-2024
Empty Convex PolygonsP17067Luogu 洛谷 (Luògǔ)shenyang-2017
Enclosure of Land and WaterP17095Luogu 洛谷 (Luògǔ)qingdao-2017
Epilogue of HappinessP14451Luogu 洛谷 (Luògǔ)xian-2025
Equivalence of SudokuP17183Luogu 洛谷 (Luògǔ)hong-kong-2017
Eva and Euro coinsP17322Luogu 洛谷 (Luògǔ)nanjing-2018
Evil CoordinateP9626Luogu 洛谷 (Luògǔ)nanjing-2020
Expanding ArrayP15078Luogu 洛谷 (Luògǔ)chengdu-2024
FactoryP17737Luogu 洛谷 (Luògǔ)xuzhou-2019
Fence BuildingP17262Luogu 洛谷 (Luògǔ)urumqi-2017
Fenwick TreeP9883Luogu 洛谷 (Luògǔ)aec-2021
Fermat's Optimization ProblemP17181Luogu 洛谷 (Luògǔ)hong-kong-2017
FibonacciP9825Luogu 洛谷 (Luògǔ)shanghai-2020
Fibonacci SequenceP17645Luogu 洛谷 (Luògǔ)yinchuan-2019
FillominoP10828Luogu 洛谷 (Luògǔ)aec-2020
FireP13941Luogu 洛谷 (Luògǔ)aec-2019
FireworksP9627Luogu 洛谷 (Luògǔ)nanjing-2020
Five Dimensional Discrete Fourier TransformP17217Luogu 洛谷 (Luògǔ)nanning-2017
Five-round Show HandP17069Luogu 洛谷 (Luògǔ)shenyang-2017
Flippy SequenceP9887Luogu 洛谷 (Luògǔ)qingdao-2018
Floppy CubeP17096Luogu 洛谷 (Luògǔ)qingdao-2017
FlowP13942Luogu 洛谷 (Luògǔ)aec-2019
Flower' s land 3P17125Luogu 洛谷 (Luògǔ)shanghai-2025
Flower' s land 4P17126Luogu 洛谷 (Luògǔ)shanghai-2025
Follow the PenguinsP14452Luogu 洛谷 (Luògǔ)xian-2025
FountainsP9824Luogu 洛谷 (Luògǔ)shanghai-2020
FrankP17323Luogu 洛谷 (Luògǔ)nanjing-2018
FriendsP17263Luogu 洛谷 (Luògǔ)urumqi-2017
Friendship is MagicP15079Luogu 洛谷 (Luògǔ)chengdu-2024
Frozen ScoreboardP9670Luogu 洛谷 (Luògǔ)jinan-2022
Function and FunctionP9897Luogu 洛谷 (Luògǔ)qingdao-2018
Function!P17637Luogu 洛谷 (Luògǔ)yinchuan-2019
Future CoderP9880Luogu 洛谷 (Luògǔ)aec-2021
Fuzzy RankingP14192Luogu 洛谷 (Luògǔ)hangzhou-2024
GameP13943Luogu 洛谷 (Luògǔ)aec-2019
GatheringP17264Luogu 洛谷 (Luògǔ)urumqi-2017
Gathering MushroomsP14193Luogu 洛谷 (Luògǔ)hangzhou-2024
GemcrateP17127Luogu 洛谷 (Luògǔ)shanghai-2025
Girls Band PartyP17632Luogu 洛谷 (Luògǔ)yinchuan-2019
GitignoreP9831Luogu 洛谷 (Luògǔ)shanghai-2020
GoP9628Luogu 洛谷 (Luògǔ)nanjing-2020
God of GamblersP17151Luogu 洛谷 (Luògǔ)xian-2017
Good PartitionsP15080Luogu 洛谷 (Luògǔ)chengdu-2024
Grand Prix of BallanceP15081Luogu 洛谷 (Luògǔ)chengdu-2024
Grand VotingP14453Luogu 洛谷 (Luògǔ)xian-2025
Grid PointsP9672Luogu 洛谷 (Luògǔ)jinan-2022
HamuP17122Luogu 洛谷 (Luògǔ)shanghai-2025
HappinessP13944Luogu 洛谷 (Luògǔ)aec-2019
Harmonious Rectangle 1aea3183-979c-4e6d-a0de-da0588b3f592P9629Luogu 洛谷 (Luògǔ)nanjing-2020
Heart of DarknessP14454Luogu 洛谷 (Luògǔ)xian-2025
Heavy-light DecompositionP14194Luogu 洛谷 (Luògǔ)hangzhou-2024
Heron and His TriangleP17070Luogu 洛谷 (Luògǔ)shenyang-2017
Hex GameP17097Luogu 洛谷 (Luògǔ)qingdao-2017
HolesP17702Luogu 洛谷 (Luògǔ)nanjing-2019
HoneycombP17471Luogu 洛谷 (Luògǔ)jiaozuo-2018
How Much Memory Your Code Is Using?P17401Luogu 洛谷 (Luògǔ)shenyang-2018
Huge DiscountP17325Luogu 洛谷 (Luògǔ)nanjing-2018
Identical ParityP9671Luogu 洛谷 (Luògǔ)jinan-2022
Identify ChordP14195Luogu 洛谷 (Luògǔ)hangzhou-2024
Image ProcessingP17634Luogu 洛谷 (Luògǔ)yinchuan-2019
Imagined HollyP14455Luogu 洛谷 (Luògǔ)xian-2025
Infinite Fraction PathP17071Luogu 洛谷 (Luògǔ)shenyang-2017
Insertion SortP17394Luogu 洛谷 (Luògǔ)shenyang-2018
Interested in SkiingP9630Luogu 洛谷 (Luògǔ)nanjing-2020
Interesting gameP17739Luogu 洛谷 (Luògǔ)xuzhou-2019
InversionP9721Luogu 洛谷 (Luògǔ)aec-2022
IslandP17149Luogu 洛谷 (Luògǔ)xian-2017
January's ColorP14456Luogu 洛谷 (Luògǔ)xian-2025
Japanese BandsP14196Luogu 洛谷 (Luògǔ)hangzhou-2024
Just Another Game of StonesP9631Luogu 洛谷 (Luògǔ)nanjing-2020
K Co-prime PermutationP9632Luogu 洛谷 (Luògǔ)nanjing-2020
K-rectangleP17741Luogu 洛谷 (Luògǔ)xuzhou-2019
Kangaroo PuzzleP17328Luogu 洛谷 (Luògǔ)nanjing-2018
Kawa ExamP9886Luogu 洛谷 (Luògǔ)qingdao-2018
Keiichi Tsuchiya the Drift KingP17469Luogu 洛谷 (Luògǔ)jiaozuo-2018
Kill the treeP17743Luogu 洛谷 (Luògǔ)xuzhou-2019
Killing BitsP14457Luogu 洛谷 (Luògǔ)xian-2025
Kind of BingoP14197Luogu 洛谷 (Luògǔ)hangzhou-2024
Klee in Solitary ConfinementP9842Luogu 洛谷 (Luògǔ)nanjing-2021
LCS Spanning TreeP9664Luogu 洛谷 (Luògǔ)macau-2021
LOLP17155Luogu 洛谷 (Luògǔ)xian-2017
LOVER IIP17156Luogu 洛谷 (Luògǔ)xian-2017
Lagrange the ChefP17329Luogu 洛谷 (Luògǔ)nanjing-2018
Largest Common SubmatrixP17642Luogu 洛谷 (Luògǔ)yinchuan-2019
Laser TrapP9658Luogu 洛谷 (Luògǔ)macau-2021
Legends of the Three KingdomsP17072Luogu 洛谷 (Luògǔ)shenyang-2017
Let the Flames BeginP17402Luogu 洛谷 (Luògǔ)shenyang-2018
Let's Go! New AdventureP14198Luogu 洛谷 (Luògǔ)hangzhou-2024
Let's Make a Convex!P14458Luogu 洛谷 (Luògǔ)xian-2025
Let's Play CurlingP9633Luogu 洛谷 (Luògǔ)nanjing-2020
Link-Cut TreeP9666Luogu 洛谷 (Luògǔ)macau-2021
Little BoxesP17073Luogu 洛谷 (Luògǔ)shenyang-2017
Loli, Yen-Jen, and a cool problemP17742Luogu 洛谷 (Luògǔ)xuzhou-2019
Loli, Yen-Jen, and a graph problemP17740Luogu 洛谷 (Luògǔ)xuzhou-2019
LoversP17147Luogu 洛谷 (Luògǔ)xian-2017
Lowest CommonP17268Luogu 洛谷 (Luògǔ)urumqi-2017
Machining Disc RotorsP17403Luogu 洛谷 (Luògǔ)shenyang-2018
MagicP9726Luogu 洛谷 (Luògǔ)aec-2022
Magic MultiplicationP9888Luogu 洛谷 (Luògǔ)qingdao-2018
Magic PotionP17326Luogu 洛谷 (Luògǔ)nanjing-2018
Magical SetP15082Luogu 洛谷 (Luògǔ)chengdu-2024
Make It DivisibleP14199Luogu 洛谷 (Luògǔ)hangzhou-2024
MapP9720Luogu 洛谷 (Luògǔ)aec-2022
MarineP17191Luogu 洛谷 (Luògǔ)hong-kong-2017
Mediocre String ProblemP17330Luogu 洛谷 (Luògǔ)nanjing-2018
Menji, we miss you!P17121Luogu 洛谷 (Luògǔ)shanghai-2025
Mine Sweeper IIP9820Luogu 洛谷 (Luògǔ)shanghai-2020
Minimum SuffixP9719Luogu 洛谷 (Luògǔ)aec-2022
MirrorP9892Luogu 洛谷 (Luògǔ)qingdao-2018
Monster HunterP9634Luogu 洛谷 (Luògǔ)nanjing-2020
MoonP13946Luogu 洛谷 (Luògǔ)aec-2019
MultiplyP17735Luogu 洛谷 (Luògǔ)xuzhou-2019
Mystique as IrisP14459Luogu 洛谷 (Luògǔ)xian-2025
Namomo SubsequenceP10816Luogu 洛谷 (Luògǔ)aec-2020
Naomi with ArrayP17148Luogu 洛谷 (Luògǔ)xian-2017
Naomi with GraphP17150Luogu 洛谷 (Luògǔ)xian-2017
Nearby BicyclesP17186Luogu 洛谷 (Luògǔ)hong-kong-2017
New Self-describing SequenceP17074Luogu 洛谷 (Luògǔ)shenyang-2017
No more regretsP17131Luogu 洛谷 (Luògǔ)shanghai-2025
Not a subset sumP17124Luogu 洛谷 (Luògǔ)shanghai-2025
ObservationP17703Luogu 洛谷 (Luògǔ)nanjing-2019
OctasectionP9828Luogu 洛谷 (Luògǔ)shanghai-2020
Oops, It's Yesterday Twice MoreP9840Luogu 洛谷 (Luògǔ)nanjing-2021
Optimal Coin ChangeP17187Luogu 洛谷 (Luògǔ)hong-kong-2017
Our Journey of Xian EndsP17102Luogu 洛谷 (Luògǔ)qingdao-2017
P ⊕ Q = RP14025Luogu 洛谷 (Luògǔ)nanjing-2024
Paimon PolygonP9845Luogu 洛谷 (Luògǔ)nanjing-2021
Paimon Segment TreeP9844Luogu 洛谷 (Luògǔ)nanjing-2021
Paimon SortingP9843Luogu 洛谷 (Luògǔ)nanjing-2021
Paimon's Tree 79759ffa-f2ba-4f62-a368-a1487ffbbef0P9846Luogu 洛谷 (Luògǔ)nanjing-2021
Paper GradingP17704Luogu 洛谷 (Luògǔ)nanjing-2019
Pass the Ball!P9660Luogu 洛谷 (Luògǔ)macau-2021
PermutationP13947Luogu 洛谷 (Luògǔ)aec-2019
Permutation on TreeP9663Luogu 洛谷 (Luògǔ)macau-2021
Plants vs ZombiesP10824Luogu 洛谷 (Luògǔ)aec-2020
Plants vs. ZombiesP9889Luogu 洛谷 (Luògǔ)qingdao-2018
Poker GameP17705Luogu 洛谷 (Luògǔ)nanjing-2019
PolycutP17734Luogu 洛谷 (Luògǔ)xuzhou-2019
Pot!!P17638Luogu 洛谷 (Luògǔ)yinchuan-2019
Powers of TwoP17811Luogu 洛谷 (Luògǔ)nanchang-2019
Prime GameP17327Luogu 洛谷 (Luògǔ)nanjing-2018
Prince and PrincessP17706Luogu 洛谷 (Luògǔ)nanjing-2019
Prof. Pang Earning AusP10823Luogu 洛谷 (Luògǔ)aec-2020
Prof. Pang and AntsP9884Luogu 洛谷 (Luògǔ)aec-2021
Prof. Pang and PokerP9876Luogu 洛谷 (Luògǔ)aec-2021
Prof. Pang's sequenceP10822Luogu 洛谷 (Luògǔ)aec-2020
Puzzle in InazumaP9841Luogu 洛谷 (Luògǔ)nanjing-2021
PyramidP17324Luogu 洛谷 (Luògǔ)nanjing-2018
Pythagoras, One More TimeP17098Luogu 洛谷 (Luògǔ)qingdao-2017
Quick SortP9673Luogu 洛谷 (Luògǔ)jinan-2022
RabbitsP17075Luogu 洛谷 (Luògǔ)shenyang-2017
Rainbow GraphP17399Luogu 洛谷 (Luògǔ)shenyang-2018
Rake It InP17219Luogu 洛谷 (Luògǔ)nanning-2017
Random ShuffleP10818Luogu 洛谷 (Luògǔ)aec-2020
RearrangementP17220Luogu 洛谷 (Luògǔ)nanning-2017
Recover StatisticsP15083Luogu 洛谷 (Luògǔ)chengdu-2024
RectangleP9722Luogu 洛谷 (Luògǔ)aec-2022
Rectangle Flip 2P10817Luogu 洛谷 (Luògǔ)aec-2020
Renaissance Past in NancyP17404Luogu 洛谷 (Luògǔ)shenyang-2018
Repair the ArtworkP9891Luogu 洛谷 (Luògǔ)qingdao-2018
ResistanceP17812Luogu 洛谷 (Luògǔ)nanchang-2019
Resistors in ParallelP17470Luogu 洛谷 (Luògǔ)jiaozuo-2018
ResonatorsP17221Luogu 洛谷 (Luògǔ)nanning-2017
Rice ArrangementP9826Luogu 洛谷 (Luògǔ)shanghai-2020
Rikka with A Long Colour PaletteP17425Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with An Unnamed TempleP17427Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with AntsP17428Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with ConsistencyP17420Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with Data StructuresP17422Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with Grid GraphsP17429Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with IlluminationsP17430Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with Intersections of PathsP17424Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with Line GraphsP17419Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with Minimum Spanning TreesP17418Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with Nice Counting Striking BackP17423Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with Sorting NetworksP17426Luogu 洛谷 (Luògǔ)xuzhou-2018
Rikka with SubsequencesP17421Luogu 洛谷 (Luògǔ)xuzhou-2018
RooksP10821Luogu 洛谷 (Luògǔ)aec-2020
Round screwsP17129Luogu 洛谷 (Luògǔ)shanghai-2025
Sandpile on CliqueP9661Luogu 洛谷 (Luògǔ)macau-2021
Secret of Tianqiu ValleyP9851Luogu 洛谷 (Luògǔ)nanjing-2021
Sequence and SequenceP9885Luogu 洛谷 (Luògǔ)qingdao-2018
Sequences GeneratorP17393Luogu 洛谷 (Luògǔ)shenyang-2018
Set of IntervalsP9674Luogu 洛谷 (Luògǔ)jinan-2022
SetsP17188Luogu 洛谷 (Luògǔ)hong-kong-2017
Shortest PathP9675Luogu 洛谷 (Luògǔ)jinan-2022
Shortest Path Fast AlgorithmP9659Luogu 洛谷 (Luògǔ)macau-2021
Shortest Paths on Random ForestsP17472Luogu 洛谷 (Luògǔ)jiaozuo-2018
SingularityP17123Luogu 洛谷 (Luògǔ)shanghai-2025
SkillsP9676Luogu 洛谷 (Luògǔ)jinan-2022
Sky GardenP9827Luogu 洛谷 (Luògǔ)shanghai-2020
So EasyP17633Luogu 洛谷 (Luògǔ)yinchuan-2019
So I'll Max Out My Constructive Algorithm SkillsP9656Luogu 洛谷 (Luògǔ)macau-2021
SockpuppetsP17392Luogu 洛谷 (Luògǔ)shenyang-2018
Soldier Game 12499cf4-f830-42ef-9e2e-a30abeb20d8fP9893Luogu 洛谷 (Luògǔ)qingdao-2018
Space StationP17707Luogu 洛谷 (Luògǔ)nanjing-2019
SpacecraftP17099Luogu 洛谷 (Luògǔ)qingdao-2017
SpyP17708Luogu 洛谷 (Luògǔ)nanjing-2019
SquareP10827Luogu 洛谷 (Luògǔ)aec-2020
Stack SortP9677Luogu 洛谷 (Luògǔ)jinan-2022
String-dle CountP9874Luogu 洛谷 (Luògǔ)aec-2021
Sub-cycle GraphP9896Luogu 洛谷 (Luògǔ)qingdao-2018
SuffixP17101Luogu 洛谷 (Luògǔ)qingdao-2017
Sum of LogP9821Luogu 洛谷 (Luògǔ)shanghai-2020
Sum of the LineP17269Luogu 洛谷 (Luògǔ)urumqi-2017
Sum of xor sumP17152Luogu 洛谷 (Luògǔ)xian-2017
SummonP17813Luogu 洛谷 (Luògǔ)nanchang-2019
Supreme CommandP17468Luogu 洛谷 (Luògǔ)jiaozuo-2018
The Answer to the Ultimate Question of Life, The Universe, and Everything.P17736Luogu 洛谷 (Luògǔ)xuzhou-2019
The BallP17213Luogu 洛谷 (Luògǔ)nanning-2017
The ChampionP17215Luogu 洛谷 (Luògǔ)nanning-2017
The Chosen OneP17216Luogu 洛谷 (Luògǔ)nanning-2017
The DifferenceP17260Luogu 洛谷 (Luògǔ)urumqi-2017
The Game of LifeP17218Luogu 洛谷 (Luògǔ)nanning-2017
The Journey of Geor AutumnP9823Luogu 洛谷 (Luògǔ)shanghai-2020
The Kouga Ninja ScrollsP17396Luogu 洛谷 (Luògǔ)shenyang-2018
The Maximum Unreachable Node SetP17223Luogu 洛谷 (Luògǔ)nanning-2017
The MountainP17265Luogu 洛谷 (Luògǔ)urumqi-2017
The Number TriangleP17261Luogu 洛谷 (Luògǔ)urumqi-2017
The Squared Mosquito CoilP17100Luogu 洛谷 (Luògǔ)qingdao-2017
Toad's TravelP17641Luogu 洛谷 (Luògǔ)yinchuan-2019
TorchP9668Luogu 洛谷 (Luògǔ)jinan-2022
TournamentP17319Luogu 洛谷 (Luògǔ)nanjing-2018
TournamentP9890Luogu 洛谷 (Luògǔ)qingdao-2018
TowerP9667Luogu 洛谷 (Luògǔ)jinan-2022
TravelP13949Luogu 洛谷 (Luògǔ)aec-2019
Traveling MerchantP9829Luogu 洛谷 (Luògǔ)shanghai-2020
Traveling in the Grid WorldP9830Luogu 洛谷 (Luògǔ)shanghai-2020
TreeP17814Luogu 洛谷 (Luògǔ)nanchang-2019
TreeP17076Luogu 洛谷 (Luògǔ)shenyang-2017
Tree DistanceP9678Luogu 洛谷 (Luògǔ)jinan-2022
TriangleP17190Luogu 洛谷 (Luògǔ)hong-kong-2017
TriangleP17709Luogu 洛谷 (Luògǔ)nanjing-2019
Tube Master IIIP10820Luogu 洛谷 (Luògǔ)aec-2020
Twice EquationP17222Luogu 洛谷 (Luògǔ)nanning-2017
Two Convex HolesP15084Luogu 洛谷 (Luògǔ)chengdu-2024
Two WallsP9875Luogu 洛谷 (Luògǔ)aec-2021
Ultraman vs. Aodzilla and BodzillaP17467Luogu 洛谷 (Luògǔ)jiaozuo-2018
VacationP9877Luogu 洛谷 (Luògǔ)aec-2021
Vision TestP9882Luogu 洛谷 (Luògǔ)aec-2021
WalkerP9822Luogu 洛谷 (Luògǔ)shanghai-2020
Wandering RobotsP17077Luogu 洛谷 (Luògǔ)shenyang-2017
Who is the ChampionP17815Luogu 洛谷 (Luògǔ)nanchang-2019
Windblume FestivalP9852Luogu 洛谷 (Luògǔ)nanjing-2021
WowoearP9819Luogu 洛谷 (Luògǔ)shanghai-2020
XORP17146Luogu 洛谷 (Luògǔ)xian-2017
XOR SumP17816Luogu 洛谷 (Luògǔ)nanchang-2019
XOR TreeP17636Luogu 洛谷 (Luògǔ)yinchuan-2019
Xian XiangP17643Luogu 洛谷 (Luògǔ)yinchuan-2019
Xingqiu's JokeP9849Luogu 洛谷 (Luògǔ)nanjing-2021
Xu Xiake in Henan ProvinceP17466Luogu 洛谷 (Luògǔ)jiaozuo-2018
Yet another 01 problemP17133Luogu 洛谷 (Luògǔ)shanghai-2025
Yet another mailbox problemP17130Luogu 洛谷 (Luògǔ)shanghai-2025
Yet another permutation problemP17132Luogu 洛谷 (Luògǔ)shanghai-2025
Yuuki and a problemP17738Luogu 洛谷 (Luògǔ)xuzhou-2019
kingP13945Luogu 洛谷 (Luògǔ)aec-2019
the Matching SystemP9657Luogu 洛谷 (Luògǔ)macau-2021
valueP13950Luogu 洛谷 (Luògǔ)aec-2019