Problems
Correct the Sieve Sieve of Eratosthenes is a fast algorithm for finding prime numbers in larger ranges. According to W... |
Pythagoras Rocks A Pythagorean triple consists of three positive integers a, b, and c, such that a2+b2=c2. The Pythag... |
An Obvious Interactive Problem I pick a number. You guess it. You can guess at most 25 times. For every guess you make, I will tell... |
Alice and the Chessboard It's Sunday afternoon, and Alice is in her room trying to figure out the rules of the game called Ch... |
GCD Plus LCM In this problem you will be given two integers a, b. You have to answer if GCD(a,b)+LCM(a,b)=a+b is ... |
Sudden Tour! Suppose waking up tomorrow morning you heard that there is no corona and your varsity is opened! At ... |
Find Prime A prime number is a positive integer that is divisible only by itself and 1. The first few prime num... |
The Third Problem This is the third problem of today’s contest. In this problem you will be given a list of numbers. Y... 
Moderate
405/422/710 |
Hello Choto Bondhu! Let's play a game. I will give you a number n. You will have to tell me n2. Okay, it may seem diffic... |
Mount Everest Mount Everest is known as Sagarmatha in Nepali. The height of Mt Everest is 8,848 meters. Many local... |
Simple Operation Mr. X is a school teacher. He teaches C programming to the students. In every class, he gives some s... |
Victory Robot Your school is going to arrange a ceremony to celebrate the upcoming victory day. So the high school... |
Circle and Square Meena and Raju are learning about different shapes. Meena's favourite shape is Circle while Raju lik... |
Treat Time Labiba ma'am wants to give a treat to her favorite student Nafia. But as she now lives abroad, Labib... |
Master Plan Because of Eid-ul-Fitr, there is a BIG OFFER at your nearest super shop. You have decided to go shop... |
Count the Mines There is a special robot being created by your friend that can detect hidden mines on the ground. Bu... |
Biswa and Picnic Biswa’s department is going on a picnic and as usual, he is a member of the organizing committee. Th... |
How Many Ways? Regular problem solvers starts their journey by solving ad hoc and number theory. After getting the ... |
Meena Has Three Wishes Definition: We all know how to measure the linear distance between two points A and B. It is measure... |
Left Prime Prime numbers are the ones which can only be divided by 1 and the number itself. 2, 3, 5, 7, 11, 13 ... |
Calculate the Sum If You Can This problem deals with the following expression: 1−2+1−2+1−2+1−2+1−2+1−2+1−2+... Given n, you have ... |
Largest Prime A positive integer number n is called a prime number, if it is only divisible by 1 and n itself, whe... |
Noman's Birthday Today is our friend Noman's birthday. For celebration of his birthday, we have already used n baloon... |
Light The Candle You have N candles of different lengths. For a candle of length L, you can light it for L minutes. N... |
Power of Army Recently Chikanu declared war against Shukanu. To win the battle against Shukanu he wants to form an... |
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
