Counting Matrices
Given a natural number N and a prime p, let’s define a special set Zp​={0,1,2,…,p−1}. Now count the ...
Pudding and Coins
Pudding is playing a game that has n levels. There are a total of n(n+1)/2 coins spread out among th...
GCD, Divisor, Count!
I like short statements and you should too so here's the statement without further ado You are give...
Predict The Frequency
Luis was sleeping. He suddenly woke up with three positive integers N, M and X. He told his younger ...
Sofdor Ali's Restaurant
One of Sofdor Ali’s greatest accomplishment was his Biriyani restaurant! Unlike the traditional rest...
Sofdor Ali and Radioactivity
Sofdor Ali is the craziest and clumsiest scientist in Bangladesh. He tries to maintain the safety me...
Magician's Offer!
Rosi Vidmun is a greedy landlord who likes to grab as much land as he can. Currently he has P square...
The Game Is Back On
Moriarty is bored again. When he gets bored, the only thing he wants to do is play with Sherlock. So...
Little T2 and Dead Cats
The planet earth has become peaceful again because all the cats are dead. An evil robot named Xorged...
This Is Too Hard ☹
Many many years ago there was a small country. And all the people there were very weird. They liked ...
Mag the Mighty Kaidul
The winter is about to come. Mag the Mighty Kaidul is waiting for it for days. It is his favorite se...
Game of Palindromes
In a popular computer game, Game of Palindromes also known as GOP there is a city called Palindesh. ...
String Factory
Welcome to the string factory where strings are generated in a peculiar manner. You are given a stri...
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