These problems are from a contest organized by Bangladesh Open Source Network on See details...

Standings

A.
Tricky Ratio Given the radius (r) of a circle you have to calculate the ratio between the circumference (C) of th... |

B.
Math and Watermelons Your friend has M watermelons. He doesn't want to share them with anyone, but let's imagine he would... |

C.
Pascal's Triangle Given an integer N, print the sum of the Nth row of the Pascal's triangle. In mathematics, Pascal's ... |

D.
Fuchka Lover Arpita is walking on the footpath of a busy road. There are n Fuchkawalas on the footpath of this ro... |

E.
Less Travel Nishat loves traveling a lot. Currently she is in a newly independent country named NewKaly. She dec... |

F.
Who Is Happy? Alal and Dulal are two brothers. They want to buy many many toys. So, they ask their father to give ... |

G.
Matching Brackets You will be given a sequence of opening and closing brackets of different types ((, ), [, ], {, and ... |

H.
Future Red Coder Hrittika is a very hardworking girl. She wants to become a red coder, that's why she started practic... |

Practice contests allow you to re-run contests and experience them as close as possible to the original run.

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

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