A. Again LCSYou are given two permutations of the numbers from 1N called P1 and P2. You are also given two inte...

B. Weird GraphAnik got a Directed Acyclic graph with some weird properties. For Every node v of that graph in(v)≤1...

C. Group_Of_Extraordinary_People of ZUKIAI am sure all of you are familiar with a specific group of people. For your own safety and so that t...

D. All the CutsIn a two dimensional plane, there are “R” red points, “B” blue points and “G” green points. These po...

E. A Unique ArrayAn array is called "unique" if it has no consecutive element with same value(A[i] != A[i1...

F. ExplosionThere is a house named Larcana. It is a very weird house .There are exactly N rooms in total and bet...

G. Bracket SequenceYou are given an Ndimensional array A. Each cell of this array contains either an opening bracket o...

H. Is It PerfectBob has an initial array D of length n . Alice is a good friend of Bob. So Bob challenges Alice to f...

I. Maruo and the SequenceMaruo has a sequece A = {a1,a2,......an}. Let us define a function func(A,l,r) which is the minimum...

J. Towers of WadiaAdmiral General Aladin has n watchtowers on a desert of People's Republic of Wadia. One of those wat...

K. A Problem for String LoversRazin loves strings so much that his parents decided to buy him n strings for his birthday. But in t...

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