Love Letters!
Lately Fahim is getting a lot of love letters. A LOT of love letters. Since he is confused about whi...
Equation Equals Hazards
You are given the equation, GCD(A,M)=1. You have to determine whether there exists at least one inte...
Relatively Prime
Given a positive integer N, determine how many of the integers between 1 and N are co-prime with N. ...
Zacob the Batsman
It's known that Zacob is a reliable batsman of LU CSE Cricket Team. Also as long as he is on the cre...
Omae Wa Mou Shindeiru
Itachi and Sasuke are trying to beat Kabuto, the caster of an awesome magical spell (or you can say ...
Largest Prime
A positive integer number n is called a prime number, if it is only divisible by 1 and n itself, whe...
Mystery of Fibonacci
Fibonacci sequence is a recursive sequence that depends on the following definition: Fib(N) = Fib(N-...
Meena O Dosto Sele
Dosto sele Dipu and his friends used to disturb Rita Apu everyday on her way to school singing , " র...
Find the primes?
For a positive integer n, let’s define a function f: f(n) = sum of positive integers less than n whi...
Day-Month-Year
Meena is a talented girl in her class. She likes to brainstorm in her leisure times. One day, she wa...
Hange and Her Gear
Hange has developed a special gear to attack the Cart Titan. The gear is a round, disc-like object. ...
Switches
Technology is going ahead very fast. How can we know what will we get in future? One day you met a g...
Rivalry Friends
Ryo and his girlfriend love to think about challenges. One day his girlfriend gave him a challenge t...
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...
Admission Gift
During admission exams in the city of RR (Royal Royal city), the students of RR University of Engine...
Kitorp and His Love
Kitorp loves his wife Asiar(who is a problem solver as well) but he loves math more. To get his atte...
Meera and Solo Chocolates
Meera bought candies from the store. She is now going to distribute those among her N friends. She m...
Christmas Tree
Professor Rio has an amazing Christmas tree. Unlike other trees, this Christmas tree has some specia...
Is Bita Happy?
Bita has learned bitwise-operations recently. She is doing some experiments with these operations no...
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...
Perfect Points
Perfect lines are the lines y=mx+c such that m and c are positive integers. Perfect points are the p...
Is It Perfect
Bob has an initial array D of length n . Alice is a good friend of Bob. So Bob challenges Alice to f...
Is It a Perfect Square?
Given some numbers, can you tell, if the product of these numbers are a perfect square or not? A num...
Birthday Gift for SJ
Today is your best friend SJ’s birthday. You want to buy a birthday present for her. You want to buy...
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