Naughty Subsequence - V2.0 Mahib loves ‘Naughty Subsequence’-s. He will give you an array of characters ara[0,1,...,n-1] that c... |
Sticking Pins You are sticking pins on a 2D board at N given coordinates. However, since you are not very good at ... |
Shopping is Fun!! Mr. Hikiko passed his Eid without shopping because of ongoing lockdown. Now, Govt. removed the lockd... |
Penguins of Madagaskar You all heard about the Penguins of Madagaskar. They work for the penguin kind and loves cuteness. O... |
Video Game Pro Shefin is playing a video game. In this game, there will be $N$ buildings in a row. $i^{th}$ buildin... |
Orchid Division Quido has a square orchard full of various fruit and nut trees. The trees are planted in regular row... |
Array Partition Today Leena learnt about subarrays and partitions. Given an array $A$, a subarray of this array is a... |
Messy Table Akib is a very good student but his reading table is very messy. One Friday afternoon, Akib is sitti... |
Third Dimension Mr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across... |
Buckets of Water In Abby's area the water is available in the tap only from 6AM to 8AM. So, Abby thought she would st... |
Ekupai Hacker robot Ekupai is trying to hack a supercomputer. He needs a cheat code X to hack this computer... |
Fivefold Removals Alice and Bob are playing a simple game on marbles. They have a bucket containing N marbles, and the... |
Happiness If you have a Tk 100 in your wallet, what would you do? You might have couple of ways to spend that ... |
Babur Biye Babu is getting married. Babu's fiancé is a prominent programmer of Bangladesh. She told Babu to sol... |
My Small Number You are given two integers N and M. Find another integer X divisible by M that has the same number o... |
Perseus and The New Challenge The life of princess Andromeda, the daughter of King Cepheus and Queen Cassiopeia of Ados, is in dan... |
Poltu and Interesting Number Poltu Loves interesting number. So he wants to find this type of number. The definition of an intere... |
Move It! Few of my friends are working on a game called “Move It!”. It's a tile-based game played on an $n\ti... |
Easy Sequence 2 Let’s define a easy sequence F. Where $ F(1) = 1 $ $ F(2X) = F(X)^2 + 1 $ $ F(2X+1) = F(X) \times F(... |
Dominoes Forever Once when I was little, my father took me to a tobacco shop! It is surprising, but true. He asked th... |
Bikpik Colony Bikpiks are very small aliens. Day by day they are becoming very dangerous for human being. They liv... |
Memes vs. Social Media In this era of modern technology social media is the most powerful weapon and the viral issue is the... |
Train Hijack You and your friend Daneliya Tuleshova are planning to hijack a train. Your friend will go inside a... |
I Hate Combinatorics! Rick and Morty are being hunted by the galactic government. They ran away to the cell dimension. The... |
Is This a Give-Away? Once there lived an ancient mage named Farabi. He could always give perfect weather forecast. He nev... |