Oh Functions
Let’s define functions f and g as: f(x) = 2 * ( f(x-1) + g(x-1) - 1 ) * ( f(x-1) + g(x-1) - 3 ) + 12...
The Easiest Problem
Tareq Abrar is a lazy programmer. He has a friend named Aminvai, who is famous for his amazing skill...
Help Lazy Tareq
There is a boy named Tareq Abrar who is very lazy. He likes sleeping. He also likes eating. His moth...
Admission Gift
During admission exams in the city of RR (Royal Royal city), the students of RR University of Engine...
Mr Makor And His Friends
Mr Makor has a set S of n integers. He calls a sequence of length k special if every element of the ...
Crypto-Number
Walt and Gus have a great rivalry. Recently Gus has developed a cryptographic system. Walt is trying...
Joker's GCD Test
Joker has a sequence P of n integers. Each two elements in the sequence are pairwise distinct. He de...
Tree Business
To become economically stable, Saturn has come up with a new kind of business, tree business. At fir...
Distribution of Relief
"Please follow all instructions provided by your local health authorities." Due to Coronovirus epide...
Find the primes?
For a positive integer n, let’s define a function f: f(n) = sum of positive integers less than n whi...
Meena O Dosto Sele
Dosto sele Dipu and his friends used to disturb Rita Apu everyday on her way to school singing , " র...
Day-Month-Year
Meena is a talented girl in her class. She likes to brainstorm in her leisure times. One day, she wa...
Do you have Arithmophobia ?
Don’t worry! If you are a programmer, you might not have arithmophobia!! But Era has a weird phobia ...
Zootopia
Judy Hopps , a rookie officer joined Zootopia Police Department. She was fond of working sincerely f...
Meera and Solo Chocolates
Meera bought candies from the store. She is now going to distribute those among her N friends. She m...
Secret Meeting
The world is terrified by Pandas! After a miraculous chemical explosion, they became smarter; and ev...
Solve This Giveaway Problem First
This problem is straightforward and easy. You will be given two integers N, P and a list L of positi...
Beauty of AP
Solving problems is fun in competitive programming, right? So let’s solve a fun task today too :P. 1...
Composite Facts
Let's define two functions F and S: F(n) = 1 + n! S(n,m) = Sum of first m non-prime integers which ...
Jhamela, Once Again
You are given n positive integers as an array. Also, you are given an integer k. Now, try to find a ...
Complex Tashreef
Tashreef finally received the Zuinness Journal of Galactic records recognition for being the most co...
Perfect Points
Perfect lines are the lines y=mx+c such that m and c are positive integers. Perfect points are the p...
I Am Good 2.0
I am trying to become a good guy, giving contestants as little pain as possible. So, this problem is...
Trust Me , You Can Solve It ;-)
Nafis Shahriar loves to do codeforces programming contests. He is the first candidate master in code...
Omae Wa Mou Shindeiru
Itachi and Sasuke are trying to beat Kabuto, the caster of an awesome magical spell (or you can say ...
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