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

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

Circle of DeathAbir is a school going boy, who loves math. Also, he loves to play with stones. Recently he invented...

Irregular Is Tough, Regular Is Easy!Dr. Bari is working on some chemical formation. He believes that chemicals and shapes that are regul...

Compute the CombinationLet 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...

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

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

Cook a DishHave you ever cooked something? No? Not a problem! Whenever you try to cook something, you need som...

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

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

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

Counting is Difficult 2East West University Computer Programming Club (EWUCoPC) is arranging an IntraUniversity Programmin...

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

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

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

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

Sofdor Ali and RadioactivitySofdor 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...

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

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

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

Bad Neighbors 2As some of you already know, Nocu City has a history of having bad neighbors. These bad ones, take a...

Subset of SequencesYou will be given a set of sequences. Each sequence is a list of numbers. Two sequences are Ksimil...

Secret MeetingThe 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 breakin of Gringotts Wizarding Bank on 1 May, 1998, during the height of the Second Wi...

The Game Is Back OnMoriarty is bored again. When he gets bored, the only thing he wants to do is play with Sherlock. So...

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

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

Little T2 and Dead CatsThe planet earth has become peaceful again because all the cats are dead. An evil robot named Xorged...

This is Too Hard ☹Many many years ago there was a small country . And all the people there were very weird. They liked...

Mag the Mighty KaidulThe winter is about to come. Mag the Mighty Kaidul is waiting for it for days. It is his favorite se...

Mina and RajuEveryone know about Mina & Raju. They are siblings as well as good friend. The friendcircle of ...
