Arko and Special Permutations
Arko is very fond of permutations. He can easily calculate the number of n length permutations. (In ...
Victory Day
Today is 16th December, 2017. 46 years ago on this day we earned freedom. Every freedom comes up wit...
Meeting Table
Let there be three groups of people waiting to attend a meeting. There are $\textbf N$ people in eac...
Don't Shout
It is well known on the Internet that you shouldn’t type in all caps. YOU SHOULDN’T. On the Internet...
Very Easy 272/306/593
Exists or Not Exists
You will be given some numbers. Then there will contain some queries. In every query there will be g...
Directed Rectangle
Sami has just finished his assignments, to relax, he wants to play games. Since he’s banned from PUB...
Dilu's Library
Dilu is a young boy who loves mathematics. He recently learned how to code. He was interested in sol...
K-Th Root
You will be given Q queries. In each query, you will be given two positive integers A and B. You hav...
Who Ate the Pizza Slices?
Misty’s life is very dramatic. No matter how careful she is, some interesting and sometimes unfortun...
Lui and Dengue
Lui is in Dhaka head office now. You all know Lui, a mosquito and a TV celebrity. He is trying to sp...
A Ridiculous Problem
Let's face it. This problem is here just to spite you off. So, I will not beat around the bush. You ...
A Feast for the Fans
Game of Thrones is an American fantasy drama television series created by David Benioff and D. B. We...
Number Game
Jhontu and Montu are brothers. They tend to skip study and play. So to keep them busy, a senior stud...
Help Ribo
Ribo is a famous robot, engineered by SUST robotics club. He can do wonderful things like answering ...
Childhood Game
About twenty years ago, when we had only 16MB RAMs and 5GB hard disks, playing games might seem like...
Very Easy 9/15/40
Mr Max Count Sum
Mr Max , Mr Sum and Mr Count are three neighbours. They have a common enemy, an old man living in th...
Jealous Youngsters
It is chaos playtime at kindergarten again, and teacher Tom is having some difficulties. You see, ki...
Island of Demons
During the war of the human, elves and dwarves, there rose a glade in an unknown region with multipl...
K for Knight
Alice is a famous chess player. Her friend Bob wants to learn chess. So she gives him a task. The ta...
Challenging Case
Officer Rahman, a mysterious character, often gets into trouble. He faced the most dangerous crimina...
FI_Nabil Very Easy 1/9/54
Arya and OR
Little Arya loves to play with numbers. She likes to play in different ways with them. One day she s...
Coin Collection (Easy)
Neema and Mouri loves to collect coins. When they get bored, they bring out all of their coins. Usua...
Life of Phi
The Great Khami is learning Number Theory. He is very excited to know that Euler's Totient Function ...
Hidden Graph
There is an unweighted, undirected hidden graph. You are given an integer range from L to R. There a...
Ghum Over Everything
Sheldon and Leonard are roommates. Usually Leonard drives Sheldon to work everyday as Sheldon can’t ...
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