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...
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 give...
Game of Palindromes
In a popular computer game, Game of Palindromes also known as GOP there is a city called Palindesh. ...
Level Up
You are playing a game that has 16 levels. You start with level 1 and after gaining a certain amount...
Third Dimension
Mr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across...
Game Show
Alex is participating in a game show. Mr. Phil is the host of the game. Alex is provided with an arr...
K-th DuoPalindrome
Alice likes playing with Palindromes (strings that read the same backward as forward, such as 'madam...
Bad Neighbors 2
As some of you already know, Nocu City has a history of having bad neighbors. These bad ones, take a...
Counting Murgis
Ever since that wicked thief took away some of her murgis (hens, that is), Meena was ever anxious th...
Mina and Raju
Everyone know about Mina & Raju. They are siblings as well as good friend. The friend-circle of Mina...
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...
Secret Meeting
The world is terrified by Pandas! After a miraculous chemical explosion, they became smarter; and ev...
Bad Cook
Mr. Meme has recently moved to a foreign country named "Gloryland" for study purpose. There, he has ...
Geometry Forever
Fear no more, this is a problem of geometry! When Moyna was little, he had a math teacher named Shuk...
How Many Paths?
You are at the top left corner [position (1,1)] of a R×C grid. Your destination is bottom right corn...
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...
Subset of Sequences
You will be given a set of sequences. Each sequence is a list of numbers. Two sequences are K-simila...
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...
Kitchen Combinatorics
The world-renowned Swedish Chef is planning a gourmet three-course dinner for some muppets: a starte...
Meeting Place
There is an N*N grid where (r,c) denotes a cell number where r means row number, c means column numb...
Bad Neighbors
In the strange neighborhood of Nocu, a lot of people lives pretty happily, or so they think. Like mo...
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...
Counting is Difficult 2
East West University Computer Programming Club (EWUCoPC) is arranging an Intra-University Programmin...
String Play
Milo has a string S of length L. Tutu picks a random prefix and Mota picks a random suffix of S. Now...
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