No GCD
You are given N integers. Each integer is square free (i.e. it has no divisor which is a square numb...
Gaaner Koli
The protagonists of this problem are two great programmers of a certain institution Omanush and Ordi...
Harry Potter and the Vault of Gringotts
"There was a break-in of Gringotts Wizarding Bank on 1 May, 1998, during the height of the Second Wi...
Alice in Candyland
Alice came up with a new game. In this game called "Candy Quest", there is a NxN size 2D grid. In ea...
Paying Bills
Mued is finally home for summer vacation after surviving yet another semester of the mighty CS Under...
Bikpik Colony
Bikpiks are very small aliens. Day by day they are becoming very dangerous for human being. They liv...
Subset Multiplication
In mathematics, especially in set theory, set A is a subset of set B, or equivalently B is a superse...
Super Shop
A super shop sells only 26 items, labeled them from ‘A’ to ‘Z’. The shop stores the list of products...
MaxXOR
You are given an array A of n integers (A1​, A2​, ..., An​) and some queries. In each query, you wil...
Chocolate
There is a shop named Chocolove in the Codeland. There are many chocolates in the shop. Each chocola...
Easy
This problem is very easy. As my mood is not so good, I will not elaborate the statement unnecessari...
Photo Matching
You’ll be given two matrix M1 and M2 and another integer K. The size of both M1 and M2 are N*N and e...
Ant Query
Scientists from the planet Krypton have figured out a way to grow artificial sugar in space. They ha...
Escape the Planet Earth
As you know earth is affected by corona virus. Situation becomes worse day by day .Almost 80% people...
Shopping is Fun!!
Mr. Hikiko passed his Eid without shopping because of ongoing lockdown. Now, Govt. removed the lockd...
Osim's Maze
Welcome to Osim's maze! Unfortunately, you are in the maze right now and you want to come outside th...
Race in DomKi
There is a kingdom called DomKi. DomKi has N city and N-1 two-way road. Each city is numbered with 1...
Rise up
You are given N piles of stones. The piles are numbered 1 to N from left to right. Each pile contain...
Divisible LCM
You have a sequence a1​, a2​, a3​, …, an​ of n integers and q queries. In each query, you are given ...
Prefix & Suffix Maximization
You are given an array a of n integers. Now, let’s define two variables P and S. Where P is the bitw...
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