Problems
Patterns of Coffee Type Research (or thesis) is a time-consuming task. One can not define research as a straight line from w... 
Very Hard
38/43/107 |
Help Alex Jhon! Alex Jhon is a very good man in his village. He always helps his neighbors and poor people as much a... |
Sudoku of Sheldon One day while playing the Sudoku game Sheldon got an emergency call from his mother, so now he has t... |
Protect the Dark Lord The time has finally come for the last battle between The HERO and The DARK LORD!!! But sadly in thi... |
Binary Game Alice and Bob love to play with numbers, one day they found an array with $N$ integers consisting of... |
Tahsin and Tree Tahsin loves graph theory very much. He is especially fond of trees. For his upcoming birthday his f... |
Save Abul Bhai! In a parallel universe North African nation of the Republic of Wadiya has been ruled by Admiral-Gene... |
Hello From Linear Algebra Techboy has m equations with n unknowns like below – ai1 x1+ ai2 x2+⋯⋯⋯⋯⋯+ ain xn= di , where 1≤i≤m ...
Moderate
6/10/36 |
Tareq, SOD & Prime Tareq loves Prime Number. A prime Number is a number that is only divisible by 1 and the number itse... |
OCD Returns! This problem author has OCD (obsessive–compulsive disorder). One day his teacher gave him an array o... |
Clickbait Clickbait is something (such as a headline) designed to make readers want to click on a hyperlink es... |
No Need for Speed Mr. Baker always wanted to be a race car driver. But failing to reach his dream goal, he started his... |
National Flag Today is the 16th December, a red letter day of our national history. The whole country equipped wit... |
Jenia's Homework Jenia is a very talented girl. She got homework from school. She is such a nerd who cries if she can... |
Ross at a Loss You might have seen Internet's greatest meme (later turned into a template) - Loss (The image on the...
Moderate
33/40/98 |
Easier Than You Thought! CSE Programming Club of Comilla University was created for the betterment of the students of Compute... |
Can IUTPC Resist the Coders? IUT CSE’16 batch students have completed their C Programming Course. As they are so dexterous progra... |
Description is Pathetic Do you know what is the hardest part of creating a problem? Thinking and writing the description. Yo... |
Maze Ball Game Your friend Yulianna Karaulova, likes to play maze ball game. You are going make a DIY project to bu... |
Poltu the Legend Serajnagar M. A. Pilot Model High School is situated at Raipura, Narsingdi, Bangladesh. This school ... |
Biswa and Restaurant Business After huge success in Borhani business, Biswa has recently started restaurant business. He’s got the... |
Sheldon's Obtuse Triangle We all know Sheldon Cooper from The Big Bang Theory. Recently he got his Nobel Prize. He likes polyg... |
I Hate Combinatorics! Rick and Morty are being hunted by the galactic government. They ran away to the cell dimension. The... |
Nothing’s more contagious than laughter Gotham, a city full of criminals. But there is one who is more than just a criminal. He brings pure ... |
Is This a Give-Away? Once there lived an ancient mage named Farabi. He could always give perfect weather forecast. He nev... |
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
