Gaaner Koli The protagonists of this problem are two great programmers of a certain institution Omanush and Ordi... |
Orchid Division Quido has a square orchard full of various fruit and nut trees. The trees are planted in regular row... |
Aliens 19 February 2020, Unidentified flying object (UFO) has captured student’s attention on top of the CS... |
Divisible LCM You have a sequence a1, a2, a3, …, an of n integers and q queries. In each query, you are given ... |
Babur Biye Babu is getting married. Babu's fiancé is a prominent programmer of Bangladesh. She told Babu to sol... |
The Game of Rocks Alice and Bob have come up with a new game. Bob gives Alice a NxM grid that contains N rows and M co... |
Reverse Hash Binary strings are strings that can only have 0 or 1 as the characters. The hash value of a string i... |
Binary Rhodium Xenon is a great alchemist. Recently, he has decided to perform a special type of transmutation. But... |
LCM Divisible Subsequence You’ll be given an array of $N$ integers and two more integers $K$ and $M$. You have to find the num... |
LIDS We all know about LIS (Longest Increasing Sub sequence). The task to find the length of the longest ... |
Dominoes Forever Once when I was little, my father took me to a tobacco shop! It is surprising, but true. He asked th... |
Penguins of Madagaskar You all heard about the Penguins of Madagaskar. They work for the penguin kind and loves cuteness. O... |
Happiness If you have a Tk 100 in your wallet, what would you do? You might have couple of ways to spend that ... |
Zootopia Judy Hopps , a rookie officer joined Zootopia Police Department. She was fond of working sincerely f... |
Paying Bills Mued is finally home for summer vacation after surviving yet another semester of the mighty CS Under... |
Messy Table Akib is a very good student but his reading table is very messy. One Friday afternoon, Akib is sitti... |
Ekupai Hacker robot Ekupai is trying to hack a supercomputer. He needs a cheat code X to hack this computer... |
Sgt. Laugh That's it. Sgt. Laugh has had enough. He is determined to end the evil military reign of General Cry... |
Brain Pleased Like most of the other teenage girls, Shabnam loves to generate strings. But recently, she discovere... |
Powerful Array You are given an array A of N integers . Now you have to process Q queries in this array. Each query... |
Array Partition Today Leena learnt about subarrays and partitions. Given an array $A$, a subarray of this array is a... |
Help IKRI Ikri has a binary string s of length n. (each character of s is either 0 or 1) The weight of the bin... |
Predict The Frequency Luis was sleeping. He suddenly woke up with three positive integers N, M and X. He told his younger ... |
Anina's Christmas Tree This Christmas Anina and her friends have decided to make some Christmas trees to decorate her town.... |