Wizard Duel
Wizard Duel is approaching soon in Hogwarts and the students of the Dueling Club are absolutely thri...
On My Way
One fine morning you discovered yourself standing in a maze. The maze can be considered a connected ...
Efficient Construction on Mars
Elon Musk has constructed N cities numbered from 0 to N−1 on Mars. He initially planned to construct...
Spreadsheet v1
Are you trying to find a problem that is easy to solve? Even if it involves writing a lot of code? T...
Best Place to Arrange Contest
We are going to arrange the 7th CPU CSE programming contest in our department. But to arrange a cont...
MEXimum
Let’s get straight to the point. You are given a tree. In the tree, each node u has a number au​ ass...
Multiverse Of Courier Service
Dr. Strange finally discovered a safe way to travel between parallel universes. By noticing people’s...
Marbles Per Second
You have a rooted tree of n nodes. If we traverse the tree from the root, let’s say the traversing o...
MangoSmash
Your friend has come to visit the RUET campus. As the Mango season goes on ⋯, he/she said “Mama Aam ...
Set the Meeting
Three colleagues Motu, Biscuit and Ramjan are in Sundarbans now. They are on a mission to protect th...
Many Paths, Many Costs
Alice and Bob are visiting Byteland. They are observing the map of this country. Surprisingly, the m...
Birthday Present?!
As everyone gifts graphs or strings to people on their birthdays, Oyshee’s friends decided to do som...
Nilkhet
You’re planning to start a library for the next n days, where you will rent books to students. Each ...
Counting Friends
Johnny uses a social network called Supernova. Unlike the other social networks, Supernova does not ...
Adam Young
“It's hard to say that I'd rather stay awake when I'm asleep 'Cause everything is never as it seems ...
A Game of Bots
You were idly scrolling through your Phesbook feed one morning when you discovered an ongoing event ...
Cheap Tourist
The country of Byteland is divided into N provinces numbered from 1 to N. The provinces are connecte...
Hidden Graph
There is an unweighted, undirected hidden graph. You are given an integer range from L to R. There a...
Pretty Diabolical
TRAOMBINNAA is going to be Billy Butcher's base for the next season of the boys. He is going to buil...
Change Queries
Today is a very special day for Rubel. Recently he got a job in a software company. Now today is the...
XOR Tree
You are given a tree with N vertices. A tree is a connected undirected graph without cycles. The tre...
Shortest Path?
Given an unweighted, undirected and connected graph consists of $N$ nodes numbered from $1$ to $N$. ...
Taofiq the House Prefect
Tomorrow is a very special day for Taofiq. He is participating in an intra school quiz contest. As h...
I Hate Long Description
There are N cities in the country AjobDesh and M one way roads connecting the cities. There lives ex...
Sayadpur City
Bob wants to visit a new country called sayadpur. There are N cities (1,2,3,…,N) in sayadpur, and th...
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