Problems
Old Magic! You: Guess an integer number, but don't tell me. Your friend: Okay! You: Now multiply it by 3. Your ... |
Secret Meeting The world is terrified by Pandas! After a miraculous chemical explosion, they became smarter; and ev... |
Some Basic Chords Where do you start when you want to learn to play guitar? Well learning chords and strumming songs i... |
Tasks Zico is a fan of Artificial Intelligence (AI). So he is doing a course on AI and even likes the teac... |
Siraj Raval and His Dataset Siraj has a dataset consisting of $N$ 2D cartesian points. Siraj wants to find out a straight line o... |
Kitchen Combinatorics The world-renowned Swedish Chef is planning a gourmet three-course dinner for some muppets: a starte... |
Gorgeous Space Station Doro is the chief commanding officer of two space stations, Mungi and Hanzi. To make both stations g... |
Bell Ringing Method ringing is used to ring bells in churches, particularly in England. Suppose there are6bells t... 
Moderate
9/10/11 |
Scary Big Chessboard Our friend Alice got stuck in a big chessboard. The chessboard has N rows and N columns. Some cells ... |
Count Bridges You are given an unweighted, undirected, and connected graph consisting of N nodes and M edges. You ... |
The Medallion International University of Turkey (IUT) is organizing its annual sports tournament. Students from d... |
Random Graphs This problem is very easy. There's a graph of $N$ nodes. Each edge $u-v$ ($u >= v ; u = v$ is possib... |
Helping Beksin Jho Beksin Jho is a very talented boy. Like all of you guys, he also has great interest in programming a... |
Order of Digits You will be given a list L consisting of N non-negative integers in a decimal number system. We all ... |
Printing Error We all know programming contest is fun. Every year teams all over the country participate in many co... |
N-Ta-Gon Has a Problem N-ta-gon is a regular convex polygon shaped stadium where the polygon has N arms. Recently an alien ... |
N Cities In a country there are N cities numbered from 1 to N. To Travel along the cities there are total N b... |
Love Letters! Lately Fahim is getting a lot of love letters. A LOT of love letters. Since he is confused about whi... |
Chocolates Asiar likes chocolates a lot. One day, she was walking by the road to her school. Suddenly a magicia... |
Isomorphic Graph You are given two connected graphs $G_1$ and $G_2$. Both of the graphs have $N$ vertices and $N$ num... |
Rotation Dilemma Akash has two favorite convex polygons A and B. But one of his new year resolution for 2020 is to ha... |
Angry Talha Talha is a very good student and topper of his class. He is very good at teaching others too. One da... |
Milad's Lost Tree Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ... |
GCD and NOD Given 3 numbers, G, A and B we have to find two numbers M and N such that they satisfy the following... |
Christmas Gifts It's Christmas time! It's the time when Santa brings gift for the children. This year Santa has $K$ ... |
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
