## Itsy's Magic CardsItsy needs your help with her magic cards. Her magic cards grant her special spider-witch powers. Un... |

## Color The GraphYou are given an acyclic, bidirectional graph with NNN nodes and M edges. The nodes are numbered fro... |

## Flow on TreeMr. Kaboom has recently learned about maximum flow. Now his friend Mr. Taboom gave him this problem.... |

## Kingdom - Great Roads of DestinyShin wants to be the “Great General of the Heaven”. It is his dream. But becoming a “Great General o... |

## Bad XOR 2 (Hard)So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you... |

## Act of Random Kindness (Hard)Sammy and Meera liked adventures a lot. Once in a while they used to set out adventures. This time t... |

## Sofdor Ali's Black and White TreeSofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it... |

## Kingdom of CodeKingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this... |

## Spanning TreeThere are N nodes in a tree. You can start from any node of that tree and you have to come back to t... |

## Flyover in TwinlandRio has become the president of Twinland. Now he wants to develop his country to fulfill his promise... |

## Ghosh vs DattaAbout two hundred years ago, a serious dispute evoked between the two neighboring colonies of Khulna... |

## Prime AvoiderMr. X is a friend of Hafiz bhai. Mr. X loves to play with numbers in his leisure but he hates prime ... |

## Darth Vader and 3PO on a Tree!Did you watch Star Wars yet? No? You should in your free time. Now back to Darth Vader and 3PO. Dart... |

## Keep MovingBalurmath is a city which has N interesting tourist spots, which are connected between themselves by... |

## Village Fair 2There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ... |

## Circuit BreakerIn your free time, you like to design various electrical circuits to give a hard time to your local ... |

## Traveling Policy of AjobdeshIn Ajobdesh, there are multiple cities and one of them is considered as the capital city. Obviously,... |

## War in the Wizarding WorldThere is a deadly war going on between two countries (Bitland and Byteland) in the wizarding world. ... |

## A Boring GameAlice and Bob are playing a game with a tree with n nodes. Alice always plays first, and the two pla... |

## Gold MinesThe city of gridland is a grid with n rows and m columns. The city can be divided into n*m cells. A ... |

## Road Minister TechboyTechboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ... |

## Christmas TreeProfessor Rio has an amazing Christmas tree. Unlike other trees, this Christmas tree has some specia... |

## Reverse The MagicYou are probably familiar with the technique of representing a Tree as an array of integers using Eu... |

## Big Bang TheoryDr. Sheldon Cooper is working on a project that works on the 2D concept of the universe. In this pro... |

## The Spy CatsAfter Max and Alexis's initial plan to conquer the world with kitten armies failed, they started a n... |

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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