Math Problems
Color The Graph You are given an acyclic, bidirectional graph with N nodes and M edges. The nodes are numbered from ... |
Arko and Special Permutations Arko is very fond of permutations. He can easily calculate the number of n length permutations. (In ... |
Choice Is Yours For not participating on contests regularly, Hasnaine (read Has9) has decided to kill Santo. But nob... |
Meeting Place There is an N*N grid where (r,c) denotes a cell number where r means row number, c means column numb... |
Magic Number Count Magic number is an integer number, which is only divisible by itself and total number of divisor wil... |
Counting Subsets Mr. Meseeks has just turned evil and is on his way to destroy the universe. To stop him Rick and Mor... |
Killing Floor $N (1 \leq N \leq 10^{18})$ robots have decided to take part on a battle royale. Every robot has a u... |
Building the Number This is a straight-froward problem. You will be given N. You have to find the expected value of buil... |
The Lucky Dice Ray and Evangeline are playing a game named "The Lucky Dice". In this game, each player tosses up an... |
Level Up You are playing a game that has 16 levels. You start with level 1 and after gaining a certain amount... |
Little T2 and Dead Cats The planet earth has become peaceful again because all the cats are dead. An evil robot named Xorged... |
Lazy Supermen There are two hills in Sonargaon. The heights of them are H1 and H2 meter. The distance between the ... |
Chowdhury Saheb & the Numbers You like short description of problems? Me too! Let's go to an easy problem. You are given an array ... |
Calendar of Planet Biku Mr. Hikiko is the emperor of a planet called Biku. He got a gift from planet earth which can count t... |
Christmas Tree Professor Rio has an amazing Christmas tree. Unlike other trees, this Christmas tree has some specia... |
Is Bita Happy? Bita has learned bitwise-operations recently. She is doing some experiments with these operations no... |
The Game Is Back On Moriarty is bored again. When he gets bored, the only thing he wants to do is play with Sherlock. So... |
Maximum Distance You know it’s hard seeing your favorite person being interested in another one instead of you. At th... |
The Story of Two Friends There are two friends F1 and F2 in a city. They both are student of FCB High School. Also, they resi... |
Find the Number of Pearls Today is a very special day. It’s the birthday of only one girlfriend of programmer Shojib. Now, you... |
GCD and Sum Congratulations! You’ve been hired in “Buggy Software Ltd.” And you’ve been already given your first... |
Trivial Summation The problem statement is so small. Give you four integers r, a, b, d. Find the summation of all numb... |
Recursive World! See following the two recursive functions: C(0) = 0 C(1) = 5 C(K) = C(K-1) + 4 F(0) = 1 F(1) = 2 F(N... |
Phi Numbers in Range! In number theory, Euler’s phi function, denoted as ϕ(n), is an arithmetic function which counts the ... |
Yet Another Hello World The greatest company, Pied Piper, is developing encryption systems. The company has already built Md... |
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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
