A Giveaway
Mr. Tom is the head of ICPC world final organizing committee. For the world final, he comes to Dhaka...
Shopping is Fun!!
Mr. Hikiko passed his Eid without shopping because of ongoing lockdown. Now, Govt. removed the lockd...
Subway Surfers
Jake is a character of a well-known game named Subway Surfers. He is being chased by police because ...
Perseus and The New Challenge
The life of princess Andromeda, the daughter of King Cepheus and Queen Cassiopeia of Ados, is in dan...
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...
Video Game
Shefin is playing a game. In this game there are N buildings numbered from 1 to N. Each building has...
Distinct Permutations
You are given two binary strings A and B. Recall that binary string is a non-empty sequence of chara...
Superman and the Buildings of Dahaka
To end the long-running feud between Superman and Goku fans regarding who's stronger, Zeron has deci...
Third Dimension
Mr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across...
My Small Number
You are given two integers N and M. Find another integer X divisible by M that has the same number o...
MSIS!
Do you know what MSIS is? MSIS is the abbreviation for Maximum Sum Increasing Subsequence. It is a s...
Very Dirty String
Strings are difficult, most of the contest programmers say this and try to avoid string algorithms. ...
Holy Tree
What is a tree? A tree is a bidirectional connected graph with no cycle. In a tree, we can create ...
Without Any Legend
You have two arrays $A_1, A_2, ..., A_N$ and $C_1, C_2, ..., C_N$ of length $N$. Initially for each ...
Super Mario Bros
Every kid loves to play Super Mario Bros. Mario moveু forward and collects coins in a stage. Stages ...
No GCD
You are given N integers. Each integer is square free (i.e. it has no divisor which is a square numb...
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...
Polygon Construction (Hard)
Meera in going to picnic with her friends. They are going to have lots of fun. They will be doing va...
COVID-19 Outbreak
COVID-19 outbreak in Atlantis is so bad that the government is forced to lock down the whole country...
Smart Feature Phone 2
Alice worked in CIA. Right now he need to send an encrypted message to the headquarter(HQ) of CIA. ...
Lets Play Pipeline
In this problem you will have to solve a puzzle game named "Pipeline". 90's kids knows this game ver...
m-Beautiful Numbers
An m-Beautiful Number is a number which is divisible by $m$ and the sum of the digits is also divisi...
Lucky Stone Game
Alice and Bob are playing a stone game. They consider 4 and 7 as lucky numbers and they like to make...
Is This a Give-Away?
Once there lived an ancient mage named Farabi. He could always give perfect weather forecast. He nev...
K-Game
To end the everlasting rivalry between Tom and Jerry, the Lady of the house found an Idea. She gives...
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