Combinatorics Problems
Interplanetary Mission The National Space Center(NSC) is planning an interplanetary mission in a new galaxy far far away fr... |
Bad Cook Mr. Meme has recently moved to a foreign country named "Gloryland" for study purpose. There, he has ... |
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... |
Pleasant Permutations A sequence of n integers is called a permutation if it contains all integers from 1 to n exactly onc... |
Cook a Dish Have you ever cooked something? No? Not a problem! Whenever you try to cook something, you need some... |
Joker's GCD Test Joker has a sequence P of n integers. Each two elements in the sequence are pairwise distinct. He de... |
Mina and Raju Everyone know about Mina & Raju. They are siblings as well as good friend. The friend-circle of Mina... |
Irregular Is Tough, Regular Is Easy! Dr. Bari is working on some chemical formation. He believes that chemicals and shapes that are regul... |
Meeting Place There is an N*N grid where (r,c) denotes a cell number where r means row number, c means column numb... |
I Hate Combinatorics! Rick and Morty are being hunted by the galactic government. They ran away to the cell dimension. The... |
Hange and Her Gear Hange has developed a special gear to attack the Cart Titan. The gear is a round, disc-like object. ... |
Kitchen Combinatorics The world-renowned Swedish Chef is planning a gourmet three-course dinner for some muppets: a starte... |
Geometry Forever Fear no more, this is a problem of geometry! When Moyna was little, he had a math teacher named Shuk... |
How Many Paths? You are at the top left corner [position (1,1)] of a R×C grid. Your destination is bottom right corn... |
K-th DuoPalindrome Alice likes playing with Palindromes (strings that read the same backward as forward, such as 'madam... |
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... |
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... |
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... |
Subset of Sequences You will be given a set of sequences. Each sequence is a list of numbers. Two sequences are K-simila... |
Level Up You are playing a game that has 16 levels. You start with level 1 and after gaining a certain amount... |
Third Dimension Mr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across... |
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... |
Secret Meeting The world is terrified by Pandas! After a miraculous chemical explosion, they became smarter; and ev... |
Counting is Difficult 2 East West University Computer Programming Club (EWUCoPC) is arranging an Intra-University Programmin... |
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
