Problems
Sum Game Rakib loves to play with words and numbers. Currently He invented a game where he wrote down some wo... |
Tyrion's Choice "One stone crumbles and another takes its place and the temple holds its form for a thousand years o... |
Cheap Tourist The country of Byteland is divided into N provinces numbered from 1 to N. The provinces are connecte... |
Bad Boy Ekhlas Ekhlas is a bad boy, not the type of bad that you generally admire. When he was little, his primary ... |
Trust me, this is stopper! Do you know Doctor Strange from Marvel? He thought he was the master of time. But one day he came to... |
Give Me My Vector I am in a hurry. I have n 2D vectors. And I have created all possible subsets of these n vectors. Fo... |
Angles!!! ABCD is a convex quadrilateral. E, F, G, H are the midpoints of AB, BC, CD and DA respectively. EP a... |
Crypto Gift Professor invites his n friends on his birthday. He wants to reward all of them and make them happy.... |
Equal Values You have an array containing N elements. In one move you can either increase or decrease the value o... 
Moderate
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Lucky Number Seven People often consider the number 7 as lucky. “But why?” - you might ask. Well, consider the fact tha... |
Ghosh vs Datta About two hundred years ago, a serious dispute evoked between the two neighboring colonies of Khulna... |
Who Doesn't Love Shorter Strings? I hope you are not someone who hates longer strings, or fears longer strings like me. Strings can be... |
And... Yet Another AND Problem YouKn0wWho has an integer n. He wants to find an integer sequence a of size exactly 2n such that 0≤a... |
Good and Bad Boys As you all know that it is high time for good and bad boys to do good and bad things in the upcoming... |
GoG Alice and Bob are playing GoG. GoG is a two-player board game. It consists of a grid with n rows and... |
Selfie Restriction Do you know the boy named Amlan? The only dream of his life is taking selfies. He takes selfies even... |
Distinct Permutations You are given two binary strings A and B. Recall that binary string is a non-empty sequence of chara... |
Perfect Points Perfect lines are the lines y=mx+c such that m and c are positive integers. Perfect points are the p... |
Sweety Miya The Saver The universe is at war again because of the Alien oppressive ruler Hitla Nagasaki. Hitla is so bruta... |
Noora Number A number is a "Noora" number if the count of distinct digits of the number is equal to the maximum d... |
XOR Partition Neo has a hidden array A of n integers where 0 ≤ Ai ≤ 109 is satisfied for each i from 1 to n . You ... |
Permutations and Divisors Let P be a permutation of length n where each value from 1 to n occurs exactly once. A subsequence o... |
Playing On A Directed Graph You are given a directed graph consisting of n vertices and m edges (each edge is directed, so it ca... |
Byang and Kochuripana Trouble Byang is the chief software engineer at Toad Incorporated. His grandmother is planning to give him a... |
Data Structure The operations that are performed in a data structure can be categorized into two types: query and u... |
Tags
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
