These problems are from a contest organized by Ahsanullah University of Science and Technology on

See details...Standings

A.
The Strange Shopkeeper and His First Loss Once upon a time there was a strange shopkeeper. He used to buy things and sell them with the same a... |

B.
Infinitely Large Grid One day Joti, Risty and Mithy — three friends were playing with an infinitely large grid together. T... |

C.
Do You Know LIS? Alam has an array a with n elements a1,a2,…,an and an integer x. For each i (1≤i≤n−1) index i and... |

D.
Stuck at Home After researching the Coronavirus researcher come up with a solution to tackle all kinds of mutation... |

E.
Beautiful Substrings Given a binary string T (consisting of 0 and 1) of length exactly 26, which indicates a frequency co... |

F.
Shelly's Adventure Shelly and her friends have set out on an adventure and have come across an island. The island has a... |

G.
Simple Queries You are given an array x of distinct integers x1,x2,x3…xn(0≤xi≤109;1≤i≤n) of length n. Now you... |

H.
Prefix and Suffix Initially, you are given an empty array A. You have to perform the following queries. 1 P - Add an i... |

I.
Lipsticks From Dubai Do you know what lipstick is? Well, Lipstick is a cosmetic that applies color, texture, and protecti... |

J.
Sohom's Magical Chest! One day Sohom was playing an indie game. Before the final boss, he found a Magical Chest and a paper... |

K.
Island of Demons During the war of the human, elves and dwarves, there rose a glade in an unknown region with multipl... |

L.
Square and Cube Turja is thinking of preparing a hard problem for intra AUST programming contest. He asked Alam and ... |

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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