Problems
No More Shortest Path You are given a weighted directed graph with $n$ nodes and $m$ edges. Node $S$ is marked as the sour... |
OverloadedOsim $NullNoman$ is a good boy. He loves programming and array very much. In this quarantine, he solves p... |
Sum of Medians You will be given an array of size $n$ where all elements of the array are pairwise distinct. You wi... |
Fighting Over a Duster There are two sections in Toph school and college named section A and section B. Recently the studen... |
Himi's Negligence Himi is a very nice girl but also very lazy and inattentive to her studies. So, her tutor decided to... |
Jealous Youngsters It is chaos playtime at kindergarten again, and teacher Tom is having some difficulties. You see, ki... |
Magical Tree Query You are given a rooted tree (a connected graph with no cycles) with n vertices. The vertices are num... |
Earn Your Cupcake A delicious NxN grid is given to you. All the lattice points of this grid contain a cupcake each exc... |
No Onion, No Cry -Onions make us cry, don't they? They can make us happy too. -How? -Read the statement carefully! I... |
Information Retrieval When you search in Google or any other search engines, you are provided with a list of links that ar... |
Superman and the Buildings of Dahaka To end the long-running feud between Superman and Goku fans regarding who's stronger, Zeron has deci... |
Productive Employees Congratulations on becoming the new boss of "Horizontal Company, branch: Sylhet"! But now you have a... |
Cent Savings To host a regional contest like NWERC a lot of preparation is necessary: organizing rooms and comput... |
Trust me, this is stopper! Do you know Doctor Strange from Marvel? He thought he was the master of time. But one day he came to... |
Thor vs Superman vs Goku One of the biggest arguments between comic and anime fans is the topic of Superman vs Goku. Another ... |
Joker Batman has come to visit RUET. All on a sudden Ironman has landed in front of Low CG Chottor. "Oh, t... |
Maruo and the Sequence Maruo has a sequece A = {a1,a2,......an}. Let us define a function func(A,l,r) which is the minimum... |
All the Cuts In a two dimensional plane, there are “R” red points, “B” blue points and “G” green points. These po... 
Moderate
4/4/9 |
Poga The War Stopper Poga is a war victim who lost everyone dear to her in war. Now, she leads a team of veterans who try... |
Bomb Disposal Strings Prohor is the cheif of bomb disposal unit of "Anti Terrorists Squad" (ATTS). She is now in PeculiarL... |
Acer Rubrum You are given a tree. Each of N vertices has time, when it is active (from tstart to tend inclusiv... |
Biswa and Red-Black Ants Biswa has come to Antland for a trip. There are N holes in total in Antland. He can start visiting f... |
War of Kingdoms There is a country named WARLAND. It is a big country, so it is divided into N kingdoms. Each kingdo... |
Water Project of Black Iceland Black Iceland is one of the largest populated city in this world. Due to pollution and scarcity of p... |
Lets walk on grid You will be given a grid of size N * M. The character of grid is either ‘.’ Or ‘#’. '.' means free l...
Moderate
4/5/9 |
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
