Meeting Place

There is an N*N grid where (r,c) denotes a cell number where r means row number, c means column numb...

Geometry Forever

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

This is Too Hard ☹

Many many years ago there was a small country . And all the people there were very weird. They liked...

Irregular Is Tough, Regular Is Easy!

Dr. Bari is working on some chemical formation. He believes that chemicals and shapes that are regul...

I Hate Combinatorics!

Rick and Morty are being hunted by the galactic government. They ran away to the cell dimension. The...

String Play

Milo has a string S of length L. Tutu picks a random prefix and Mota picks a random suffix of S. No...

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...

Third Dimension

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

Obligatory IDPC Problem

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

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...

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-simil...

Secret Meeting

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

Counting is Difficult 2

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

Trivial Summation

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

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...

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...

XOR Master

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

K-th DuoPalindrome

Alice likes playing with Palindromes (strings that read the same backward as forward, such as ‘madam...

Easy Peasy Subset Sum

Little Oishee loves to watch TV. But her mother, who is a math teacher, doesn’t like this at all. Sh...

Little T2 and Dead Cats

The planet earth has become peaceful again because all the cats are dead. An evil robot named Xorged...

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...

Counting Murgis

Ever since that wicked thief took away some of her murgis (hens, that is), Meena was ever anxious th...

Game of Palindromes

In a popular computer game, Game of Palindromes also known as GOP there is a city called Palindesh. ...

String in a Grid 2

Prof. Bari loves to play with string. He is also very skilled in drawing. One day he was drawing a g...

Bad Cook

Mr. Meme has recently moved to a foreign country named “Gloryland” for study purpose. There, he has ...