These problems are from a contest organized by Daffodil International University - Department of CSE on See details...

Standings

A.
Half Measures The numbers 1,2,3,⋯n (each integer from 1 to n once) are written on a board. In one operation, Jesse... |

B.
Angels and Demons You are walking at midnight along a road that has N checkpoints numbered from 1 to N from left to ri... |

C.
Strong Passwords Mitu had been using the password mitu1997qt on all her online accounts. And sure enough, her account... |

D.
Interesting Parenthesis Parentheses sequence of length 2n is the sequence containing exactly n opening parentheses «(» and e... |

E.
Shortest Path, Yet Again? Mr O is teaching Algorithms 101 to his students. The class just finished learning BFS and now he wan... |

F.
Predict The Frequency Luis was sleeping. He suddenly woke up with three positive integers N, M and X. He told his younger ... |

G.
Alligator Sky There are N balls in a box. You have two robots Alice and Bob. You will set favorite number for each... |

H.
Plantik It is Argentina vs France in the football world cup final of 2022 in a parallel universe. You are a ... |

I.
Farewell Gift for Messi Lionel Messi, the greatest footballer of all time, is going to retire from international football! O... |

J.
Wizard Duel Wizard Duel is approaching soon in Hogwarts and the students of the Dueling Club are absolutely thri... |

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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