Combinatorics Problems
Subset of Sequences You will be given a set of sequences. Each sequence is a list of numbers. Two sequences are K-simila... |
Joker's GCD Test Joker has a sequence P of n integers. Each two elements in the sequence are pairwise distinct. He de... |
The Matrix In the metaphysical world of the Matrix, different people make their chessboards with their own spec... |
Geometry Forever Fear no more, this is a problem of geometry! When Moyna was little, he had a math teacher named Shuk... |
Level Up You are playing a game that has 16 levels. You start with level 1 and after gaining a certain amount... |
Easy Peasy Subset Sum Little Oishee loves to watch TV. But her mother, who is a math teacher, doesn't like this at all. Sh... |
Secret Meeting The world is terrified by Pandas! After a miraculous chemical explosion, they became smarter; and ev... |
Compute the Combination Let P = C(N,0) - C(N,1) + C(N,2) - C(N,3) + ... + C(N,N); where C(n,r) is "n choose r". You are give... |
Yet Another Query Problem! You are given an array $A$ of length $n$ consisting of integers between $1$ and $10^6$. You need to ... |
K-th DuoPalindrome Alice likes playing with Palindromes (strings that read the same backward as forward, such as 'madam... |
Bad Neighbors 2 As some of you already know, Nocu City has a history of having bad neighbors. These bad ones, take a... |
Counting Murgis Ever since that wicked thief took away some of her murgis (hens, that is), Meena was ever anxious th... |
How Many Paths? You are at the top left corner [position (1,1)] of a R×C grid. Your destination is bottom right corn... |
Mina and Raju Everyone know about Mina & Raju. They are siblings as well as good friend. The friend-circle of Mina... |
Mr. Ant and His Problem Mr. Ant has 3 boxes and the infinite number of marbles. Now he wants to know the number of ways he c... |
String in a Grid 2 Prof. Bari loves to play with string. He is also very skilled in drawing. One day he was drawing a g... |
Bad Cook Mr. Meme has recently moved to a foreign country named "Gloryland" for study purpose. There, he has ... |
Third Dimension Mr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across... |
Kitchen Combinatorics The world-renowned Swedish Chef is planning a gourmet three-course dinner for some muppets: a starte... |
Meeting Place There is an N*N grid where (r,c) denotes a cell number where r means row number, c means column numb... |
Bad Neighbors In the strange neighborhood of Nocu, a lot of people lives pretty happily, or so they think. Like mo... |
Trivial Summation The problem statement is so small. Give you four integers r, a, b, d. Find the summation of all numb... |
Harry Potter and the Vault of Gringotts "There was a break-in of Gringotts Wizarding Bank on 1 May, 1998, during the height of the Second Wi... |
Counting is Difficult 2 East West University Computer Programming Club (EWUCoPC) is arranging an Intra-University Programmin... |
String Play Milo has a string S of length L. Tutu picks a random prefix and Mota picks a random suffix of S. Now... |
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
