Master coding competitions and become an expert programmer
Join our awesome community and get access to tens of thousands of problems and hundreds of IOI and ICPC competitions.
2-SATBinary SearchBitmasksBitsetsBitwise OperationsBreadth-first SearchBrute forceChinese remainder theoremCombinatoricsConstructive AlgorithmsConvex HullData StructuresDepth-first SearchDijkstra algorithmDisjoint set unionDivide and ConquerDynamic programmingDynamic Programming OptimizationExpression parsingFast Fourier transformFenwick TreeFor BeginnersGamesGeometryGraph matchingsGraph network flowsGraphsGreedy algorithmsHashingImplementationInteractiveKnapsackMathMatrixMeet-in-the-middleNumber theoryOptimizationPrefix FunctionPrefix SumsPrime factorizationPriority QueueProbabilitiesQueriesRandomized algorithmsRange queriesScanline / Sweep LineSchedulesSegment TreeShortest pathsSortingSparse TableSQRT DecompositionStacksString suffix structuresStringsSuffix ArrayTernary searchTreesTwo pointersZ-function
Competition archieve
Best way to prepare for a competition is to try participating in one, check out our competition archive.
Virtual
EJOI 2024 - Day 2
European Junior Olympiad in Informatics
Aug 20, 2024 06:00 – 10:00 (UTC)
Virtual
EJOI 2024 - Day 1
European Junior Olympiad in Informatics
Aug 18, 2024 06:00 – 10:00 (UTC)
Have more questions?
Email us at hello@eolymp.com, and we will get in touch with you as soon as possible.
Services
Resources
Community
Stand with Ukraine