Problems
Sweeper's Dillemma Minesweeper is a popular single-player puzzle video game from the 60's. It still enjoys the privileg... |
Ada in Dreamland Ada is wondering in her dreamland. Her dreamland consists of n spots. She has this weird machine wit... |
Acer Rubrum You are given a tree. Each of N vertices has time, when it is active (from tstart to tend inclusiv... |
Odd Prime Prime number seems to be trending topic for programming contest. As such, Piyash, being an aspiring ... |
Election in Sylhet City Sylhet is a very beautiful city in northeastern Bangladesh. Sylhet is one of the most important spir... |
Decimation Operation Being encouraged by XOR operation of binary numbers, Nanna Munna has decided to make a new kind of d... |
K-Subarray You will be given an array of length n. You need to divide the array in some part where length of ev... |
Biswa and Universe and Randomness Biswa has been thinking about the universe and its randomness nowadays. He dreams about some sort of... |
Aaagmnr Given two arrays of words (strings) determine how many of the words in the first array are anagrams ... 
Moderate
7/7/12 |
Shopping There are two gift shops in the city. They are going to merge together to create a bigger company. Y... |
Koch Snowflakes The Koch snowflake can be constructed by starting with an equilateral triangle, then recursively alt... |
Red and Green Suppose, there is an array of N integers. Each index of the array is either red or green. The first ... |
Subset Multiplication In mathematics, especially in set theory, set A is a subset of set B, or equivalently B is a superse... |
Lexicographical Smallest String There is a string $s$ of length $n$ containing lowercase letters and an integer $k$. Among the lette... |
Admission Gift During admission exams in the city of RR (Royal Royal city), the students of RR University of Engine... |
Cold Rainy Night in Stoke Night is ending. You have just got N points in 2D-coordinate plane in your dream. Wait! Things were ... |
Pizza Delivery Chef Jami had recently started home delivery service for pizzas. Jami has only a single delivery boy... |
Fancy Phone Numbers A phone number is fancy if any one of the following conditions is satisfied: At least 4 consecutiv... |
Restore Missing Values Consider an array of 'N' integers which is indexed from '1' to 'N'. Exactly 'Q' queries numbered fr... |
Beauty Factor Mehedi and Burhan are two friends. Yesterday they have participated in a class of sorting. Actually ... |
Programming Languages !!! Joy is a programmer. He likes to learn various programming languages. He has already learned many pr... |
City of Atlantis Have you ever heard of The Atlantis City? It’s a Greek mythological city. Its existence doesn’t matt... |
Find the Good Sequence Let's say two numbers are called "good" if their difference is at least 2. Similarly, a sequence is ... |
Jontrona of Liakot Liakot, the king of Cox's Bazar, is currently in a dire situation. His own younger sister Ayesha is ... |
Eet Izz Phet! A long long time ago, I left the country that was my home and with my head full of brains and shoes ... 
smilitude, wasiahmed, sahedsohel
BinarySearch, Hashing, Implementation, Sorting, String
Very Easy
225/273/950 |
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
