Divide and Conquer Problems
Binary Pigeons There are $N$ pigeons standing one after another in a straight line. There are two kinds of pigeons:... |
Milad's Lost Tree Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ... |
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... |
Hardest Problem Ever Prof.Dr.DP is very famous professor. He is expert (actually legendary grandmaster) in Dynamic Progra... |
The Perfect Collection Given an array A of N integers, if we choose any K of these integers and calculate their bitwise XOR... |
Naming Convention Tony works in a multinational technology company named Voogle LLC. The employees of Voogle follow ce... |
Déjà Vu Thor, the Thunder God is fighting a horde of monsters in a cave. The cave is so narrow that it can b... |
Mina and Raju Everyone know about Mina & Raju. They are siblings as well as good friend. The friend-circle of Mina... |
Happy Sub-Sequence Recently Alex has participated in a programming contest. He became 1st runner up. He couldn't solve ... |
OCD Returns! This problem author has OCD (obsessive–compulsive disorder). One day his teacher gave him an array o... |
Very Dirty String Strings are difficult, most of the contest programmers say this and try to avoid string algorithms. ... |
Quarantiko "If you feel unwell, stay home." Riaz has created a special encryption algorithm named Quarantiko to... |
Erik: The Candyboy - 1 Erik has N candies, and he wants to distribute those candies among his friends. But he has more frie... |
Switchblade of Thanos We all know that Thanos “The Mad Titan“ had two adopted daughters, Gamora and Nebula. But did you kn... |
Move It! Few of my friends are working on a game called “Move It!”. It's a tile-based game played on an $n\ti... |
Road Minister Techboy Techboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ... |
Paying Bills Mued is finally home for summer vacation after surviving yet another semester of the mighty CS Under... |
Sofia Sofia has just arrived in Bangladesh. Rather asking it some dumb questions, lets give it a maze prob... |
Snake's Neck Remember Violet and Dash from the movie "The Incredibles"? The two siblings recently installed the c... |
Cutting Bamboos There are $n$ bamboos in a row. Khan the bamboo cutter is going to cut them all one by one. He can d... |
Remember-Remainder Zarin is a sadist. She loves to give problems to her close people. Today she gives you an array cons... |
Ekupai Hacker robot Ekupai is trying to hack a supercomputer. He needs a cheat code X to hack this computer... |
Game of Palindromes In a popular computer game, Game of Palindromes also known as GOP there is a city called Palindesh. ... |
Dominoes Forever Once when I was little, my father took me to a tobacco shop! It is surprising, but true. He asked th... |
Messy Table Akib is a very good student but his reading table is very messy. One Friday afternoon, Akib is sitti... |
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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
