Geometry Forever

Fear no more, this is a problem of geometry! When Moyna was little, he had a math teacher named Shuk...

String Play

Milo has a string S of length L. Tutu picks a random prefix and Mota picks a random suffix of S. Now...

Third Dimension

Mr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across...

Sofdor Ali's Restaurant

One of Sofdor Ali’s greatest accomplishment was his Biriyani restaurant! Unlike the traditional rest...

Obligatory IDPC Problem

There are n people busy with arranging the upcoming Inter Department Programming Contest (IDPC) 2016...

Sofdor Ali and Radioactivity

Sofdor Ali is the craziest and clumsiest scientist in Bangladesh. He tries to maintain the safety me...

Compute the Combination

Let P = C(N,0) - C(N,1) + C(N,2) - C(N,3) + … + C(N,N); where C(n,r) is “n choose r”. You are given ...

Magician's Offer!

Rosi Vidmun is a greedy landlord who likes to grab as much land as he can. Currently he has P square...

Mr. Ant and His Problem

Mr. Ant has 3 boxes and the infinite number of marbles. Now he wants to know the number of ways he c...

Bad Neighbors

In the strange neighborhood of Nocu, a lot of people lives pretty happily, or so they think. Like mo...

Meera and Solo Chocolates

Meera bought candies from the store. She is now going to distribute those among her N friends. She m...

How Many Paths?

You are at the top left corner[position (1,1)] of a **R X C ** grid. Your destination is bottom righ...

Bad Neighbors 2

As some of you already know, Nocu City has a history of having bad neighbors. These bad ones, take a...

Subset of Sequences

You will be given a set of sequences. Each sequence is a list of numbers. Two sequences are K-simila...

Secret Meeting

The world is terrified by Pandas! After a miraculous chemical explosion, they became smarter; and ev...

Harry Potter and the Vault of Gringotts

“There was a break-in of Gringotts Wizarding Bank on 1 May, 1998, during the height of the Second Wi...

Counting is Difficult 2

East West University Computer Programming Club (EWUCoPC) is arranging an Intra-University Programmin...

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...

Trivial Summation

The problem statement is so small. Give you four integers r, a, b, d. Find the summation of all numb...

XOR Master

Imam has been participating in online programming contests for years. His goal is to become a “Maste...