A. Welcome to Criterion RoundsThe team congratulates you for participating in this contest and for being part of the journey towar...

B. A Journey Towards OneGiven NNN. You can perform 3 types of operations: Increase NNN by 1. Decrease NNN by 1. Divide NNN ...

C. Magic MomentsYou are going to a village by bus. You need k hours to do an important task while your bus journey w...

D. StraightforwardNo gossip. In this problem I will just say what to do. Initially, you will be given a bracket sequen...

E. Team FormingBen is the instructor of a camp. He is forming several teams consisting of the students of the camp....

F. I Am GoodI am trying to become a good guy, because it doesn't take money to become good. So here's a short an...

Practice contests allow you to rerun contests and experience them as close as possible to the original run.
2Sat, Adhoc, ApolloneasTheorem, Backtracking, BFS, Bignum, BinarySearch, BipartiteMatching, Bitmask, BruteForce, ChineseRemainderTheorem, Combinatorics, ConvexHull, CutVertex, DataStructure, DFS, DigitDP, DisjointSets, DivideAndConquer, DP, Eertree, EulerTour, ExpectedValue, FenwickTree, FFT, Flow, Game, GCD, Geometry, Graph, Greedy, Hashing, HeavyLightDecomposition, Implementation, InclusionExclusion, Interactive, KnuthMorrisPratt, LowestCommonAncestor, Math, Matrix, MatrixExponentiation, MergeSortTree, ModularExponentiation, MOSAlgorithm, MST, NTT, NumberTheory, Parsing, PersistentLiChaoTree, PersistentSegmentTree, PollardRho, PriorityQueue, Probability, Queue, RabinMiller, RangeOrderStatistics, Scheduling, SegmentTree, ShortestPath, Simulation, Sorting, SparseTable, SpragueGrundyTheorem, SqrtDecomposition, Stack, String, StronglyConnectedComponents, SuffixStructure, TernarySearch, Tree, Trie, TwoPointer, WaveletTree