A.
Tree Business To become economically stable, Saturn has come up with a new kind of business, tree business. At fir... |

B.
Penguins of Madagaskar You all heard about the Penguins of Madagaskar. They work for the penguin kind and loves cuteness. O... |

C.
Rik, the Space Traveler Mr. Rik is a famous space traveler. He lives in a galaxy named Victa. There are many planets in this... |

D.
Area In this problem, you will be given a square which has a length of n. Co-ordinates of the square are ... |

E.
Meeting Place There is an N*N grid where (r,c) denotes a cell number where r means row number, c means column numb... |

F.
Plant Trees, Save Life There are n students in a school. Some of them are friends with each other. You want to make the sch... |

G.
The Punishment of Hasinur Hasinur studies at X School & College situated in Chittagong. AA Sir is one of the toughest and roug... |

H.
Mind Flayer Has Attacked Again! Mind flayer, the shadow monster has attacked the town of Hawkins again. This time, the mind flayer h... |

I.
Ekupai Hacker robot Ekupai is trying to hack a supercomputer. He needs a cheat code X to hack this computer... |

J.
Seven Kingdoms! The dragon queen just conquered the Seven Kingdoms. Initially there are N cities in "Seven Kingdoms"... |

K.
Absolute Value You will be given an integer x. The absolute value of x will be within 100. You have to add 1 to x's... |

Practice contests allow you to re-run 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

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