Matching Brackets You will be given a sequence of opening and closing brackets of different types ((, ), [, ], {, and ... |

Neat Brackets Given a sequence of opening and closing parentheses ("(" and ")") you will have to determine if it i... |

Exists or Not Exists You will be given some numbers. Then there will contain some queries. In every query there will be g... |

XOR Tree You are given a tree with N vertices. A tree is a connected undirected graph without cycles. The tre... |

Counting Friends Johnny uses a social network called Supernova. Unlike the other social networks, Supernova does not ... |

Count the Chaos Imagine, you have an array of integers of size N. At each index of this array is a unique integer fr... |

Laser Light A 2D grid consists of a lot of special lights bulbs, which turns on upon the incidence of a laser li... |

Set Union Given two sets of integers, print the set containing the union of the two input sets. For example, g... |

Holy Tree What is a tree? A tree is a bidirectional connected graph with no cycle. In a tree, we can create ... |

Cut the Rope Fahim is a rope seller. He has a special tool for cutting ropes. But recently this tool is behaving ... |

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

Distinctness A substring of string S is another string S' which occurs in string S. For example: S = aaba and one... |

Mario and Princess Peach The world of Mario can be imagined as 2D grid of $N$ rows and $M$ columns--containing a total of $N ... |

Final Days of Goldfinger We see agent Bond once again being called in time of a great need. The vile criminal Auric Goldfinge... |

Smart Query Handler Bit operators perform bit-wise operations between two binary numbers. Wikipedia says, binary operati... |

Distinct Dishting You are given an array of N integers. Then there will be Q commands of the following type: Change ... |

Primary Key "Clarity-Lon" is the new awesome e-commerce based startup that went to the top of the chart within f... |

Earthquake! Most houses are not as safe as they could be. Earthquake engineering is an interdisciplinary branch ... |

Expandable ListView Minas is working on his new language. He want to add a feature call expandable listview. Here he exp... |

Rio and Inversion One day Rio was returning home from his university and unfortunately lost his phone on the way. He a... |

New Year Couple The new year 2017 is here. To celebrate the 31st night, Mr Rio has thrown a big party at his house. ... |

Subarray Sum You are given an array having N integers. You have to select at most K positions in the array and re... |

Sofdor Ali and Bracket Sequence Sofdor Ali has invented a new game. He asked his assistant Jong Bahadur ( who happens to be a monkey... |

Smallest Subarray You are given an array A of N integers A1, A2, A3, ..., AN . If we select two indices (1 ≤ i ≤ j ≤ N... |

Special Pair Mr. X is an “array pagla” person. He loves doing different types of things with arrays. Today Mr. X ... |

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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