## COVID-19 OutbreakCOVID-19 outbreak in Atlantis is so bad that the government is forced to lock down the whole country... |

## Without Any LegendYou have two arrays A1,A2,...,ANA_1, A_2, ..., A_NA1,A2,...,AN and C1,C2,...,CNC_1, C_2, ..., C_N... |

## LIDSWe all know about LIS ( Longest Increasing Sub sequence). The task to find the length of the longest... |

## Make It Big!You are given a number N (10 ≤ N ≤ 2×109). You have to perform exactly two swap operation. You can c... |

## LCM Divisible SubsequenceYou’ll be given an array of NNN integers and two more integers KKK and MMM. You have to find the num... |

## Penguins of MadagaskarYou all heard about the Penguins of Madagaskar. They work for the penguin kind and loves cuteness. O... |

## Polygon Construction (Hard)Meera in going to picnic with her friends. They are going to have lots of fun. They will be doing va... |

## m-Beautiful NumbersAn m-Beautiful Number is a number which is divisible by mmm and the sum of the digits is also divisi... |

## Third DimensionMr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across... |

## A Girl Has No Name"Joffrey... Cersei... Ilyn Payne... the Houn.." - Arya Stark Garden of Bones, Game of Thro... |

## No GCDYou are given N integers. Each integer is square free (i.e. it has no divisor which is a square numb... |

## ZootopiaJudy Hopps , a rookie officer joined Zootopia Police Department. She was fond of working sincerely f... |

## OCD Returns!This problem author has OCD (obsessive–compulsive disorder). One day his teacher gave him an array o... |

## Poltu and Digit ProductYou are given two integer LLL and RRR. You have to find the summation of digit product of all number... |

## Easy Sequence 1Let’s define an easy sequence F. Where F(1)=1 F(1) = 1 F(1)=1 F(2X)=F(X)2+1 F(2X) = F(X)^2 + 1 F(2X)... |

## Complex TashreefTashreef finally received the Zuinness Journal of Galactic records recognition for being the most co... |

## Easy Sequence 2Let’s define a easy sequence F. Where F(1)=1 F(1) = 1 F(1)=1 F(2X)=F(X)2+1 F(2X) = F(X)^2 + 1 F(2X)=... |

## Binary RhodiumXenon is a great alchemist. Recently, he has decided to perform a special type of transmutation. But... |

## The Game of RocksAlice and Bob have come up with a new game. Bob gives Alice a NxM grid that contains N rows and M co... |

## Gaaner KoliThe protagonists of this problem are two great programmers of a certain institution Omanush and Ordi... |

## The Perfect CollectionGiven an array A of N integers, if we choose any K of these integers and calculate their bitwise XOR... |

## Sticking PinsYou are sticking pins on a 2D board at N given coordinates. However, since you are not very good at ... |

## Smart Feature Phone 2Alice worked in CIA. Right now he need to send an encrypted message to the headquarter(HQ) of CIA. ... |

## Perseus and The New ChallengeThe life of princess Andromeda, the daughter of King Cepheus and Queen Cassiopeia of Ados, is in dan... |

## Dominoes ForeverOnce when I was little, my father took me to a tobacco shop! It is surprising, but true. He asked th... |

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