Dengue
Once upon a time there was a king. He had a huge kingdom and the king was very kind. All of his subj...
String Play
Milo has a string S of length L. Tutu picks a random prefix and Mota picks a random suffix of S. Now...
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...
Power of Army
Recently Chikanu declared war against Shukanu. To win the battle against Shukanu he wants to form an...
Co-Prime Enemy Pair
Two integers A and B are known as co-prime or relatively prime if their greatest common divisor GCD ...
Calculate the Sum If You Can
This problem deals with the following expression: 1−2+1−2+1−2+1−2+1−2+1−2+1−2+... Given n, you have ...
Fast Co-Prime
Two numbers A and B are called co-prime if the only common positive factor of the two numbers is 1. ...
Thought Game
Sadia is one of the nicest persons you will ever meet. In fact, she is one of those persons who like...
Equation Equals Hazards
You are given the equation, GCD(A,M)=1. You have to determine whether there exists at least one inte...
Fair Distribution
Mr. Forhad has X children. One day, on his way home, he bought Y chocolates for his children. He doe...
Magician's Offer!
Rosi Vidmun is a greedy landlord who likes to grab as much land as he can. Currently he has P square...
Window Seats on a Bus
Karim is traveling by bus. He has the window seat. However, he has to share the window with the pass...
Sofdor Ali and the Puzzle of Weights
Sofdor Ali is one of the most famous scientists of Bangladesh. He is also well known for his puzzle ...
Meena Meets The Marauders
December 14, 1975 Hogwarts School of Witchcraft and Wizardry It’s been a long long day. The Marauder...
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...
Circle and Square
Meena and Raju are learning about different shapes. Meena's favourite shape is Circle while Raju lik...
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...
A Girl's Story
Meena (Bengali: মীনা) is a fictional character who stars in the South Asian children's television sh...
This Is Too Hard ☹
Many many years ago there was a small country. And all the people there were very weird. They liked ...
How Many Ways?
Regular problem solvers starts their journey by solving ad hoc and number theory. After getting the ...
Little T2 and Dead Cats
The planet earth has become peaceful again because all the cats are dead. An evil robot named Xorged...
Boltu vs Balti
Boltu and Balti are two friends. Boltu is a great programmer whereas Balti is a newbie programmer. B...
Sofdor Ali and Radioactivity
Sofdor Ali is the craziest and clumsiest scientist in Bangladesh. He tries to maintain the safety me...
Red and Green
Suppose, there is an array of N integers. Each index of the array is either red or green. The first ...
Sofdor Ali's Restaurant
One of Sofdor Ali’s greatest accomplishment was his Biriyani restaurant! Unlike the traditional rest...
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