These problems are from a contest organized by Bangladesh Open Source Network on

See details...Standings

A.
Sakib in YorkNew Sakib has already arrived in YorkNew city. For several days, he wish to taste pasta from the restaur... |

B.
Flood In Sylhet We all know about the recent flood in Sylhet. Every area of Sylhet can be expressed with a number.... |

C.
Kingdom Rush Tsar Dicholas II wants to conquer all the n kingdoms situated nearby him. All the kingdoms are conne... |

D.
New Researcher in Town Catty is a computer science and engineering student at the undergraduate level. She is determined to... |

E.
Score of Strings You are given a list of strings. There will be queries asking one of the following - You will be a... |

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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