Color The GraphYou are given an acyclic, bidirectional graph with NNN nodes and M edges. The nodes are numbered fro...

String PlayMilo has a string S of length L. Tutu picks a random prefix and Mota picks a random suffix of S. Now...

Third DimensionMr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across...

Obligatory IDPC ProblemThere are n people busy with arranging the upcoming Inter Department Programming Contest (IDPC) 2016...

Compute the CombinationLet P = C(N,0)  C(N,1) + C(N,2)  C(N,3) + ... + C(N,N); where C(n,r) is "n choose r". Yo...

Mr. Ant and His ProblemMr. Ant has 3 boxes and the infinite number of marbles. Now he wants to know the number of ways he c...

Bad NeighborsIn the strange neighborhood of Nocu, a lot of people lives pretty happily, or so they think. Like mo...

Meera and Solo ChocolatesMeera bought candies from the store. She is now going to distribute those among her N friends. She m...

How Many Paths?You are at the top left corner[position (1,1)] of a **R X C ** grid. Your destination is bottom righ...

Bad Neighbors 2As some of you already know, Nocu City has a history of having bad neighbors. These bad ones, take a...

Subset of SequencesYou will be given a set of sequences. Each sequence is a list of numbers. Two sequences are Ksimila...

Secret MeetingThe world is terrified by Pandas! After a miraculous chemical explosion, they became smarter; and ev...

Counting is Difficult 2East West University Computer Programming Club (EWUCoPC) is arranging an IntraUniversity Programmin...

Trivial SummationThe 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 breakin of Gringotts Wizarding Bank on 1 May, 1998, during the height of the Seco...

XOR MasterImam has been participating in online programming contests for years. His goal is to become a "...

Geometry ForeverFear no more, this is a problem of geometry! When Moyna was little, he had a math teacher named Shuk...

Kth DuoPalindromeAlice likes playing with Palindromes (strings that read the same backward as forward, such as 'madam...

Easy Peasy Subset SumLittle Oishee loves to watch TV. But her mother, who is a math teacher, doesn't like this at all. Sh...

Counting MurgisEver since that wicked thief took away some of her murgis (hens, that is), Meena was ever anxious th...

Level UpYou are playing a game that has 16 levels. You start with level 1 and after gaining a certain amount...

Mina and RajuEveryone know about Mina & Raju. They are siblings as well as good friend. The friendcircle of ...

String in a Grid 2Prof. Bari loves to play with string. He is also very skilled in drawing. One day he was drawing a g...

Bad CookMr. Meme has recently moved to a foreign country named "Gloryland" for study purpose. Ther...

Meeting PlaceThere is an N*N grid where (r,c) denotes a cell number where r means row number, c means column numb...

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