Easy Summation Little Arya is growing up fast and now she can count the numbers. The problem with her counting is t... |
Hasinur's Mission! Let me tell you something about Hasinur: He is a religious person. He prays 5 times a day. He loves... |
Arithmetic Sequence (Easy) Arithmetic Sequence is a sequence of numbers where the difference between two consecutive numbers ar... |
Arithmetic Sequence (Hard) Arithmetic Sequence is a sequence of numbers where the difference between two consecutive numbers ar... |
Obligatory IDPC Problem There are n people busy with arranging the upcoming Inter Department Programming Contest (IDPC) 2016... |
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... |
Building Boundaries Maarja wants to buy a rectangular piece of land and then construct three buildings on that land. The... |
Largest Prime A positive integer number n is called a prime number, if it is only divisible by 1 and n itself, whe... |
Count the Odds Sometimes, contestants tend to look for patterns in problem descriptions. They try to figure out the... |
Game of Gnomes The enemy and their massive army is approaching your fortress, and all you have to defend it is a le... |
Gutibaji on Chessboard Let there be a chessboard of size N×M, and only one bishop in a cell (x,y). How many cells can the b... |
Game, Game Everywhere Binary and Ternary are playing a game. In this game, they initially choose an array with N elements.... |
XOR Master Imam has been participating in online programming contests for years. His goal is to become a "Maste... |
Incremental Induction The Nordic Collegiate Pong Championship (NCPC) is an insanely competive tournament where every conte... |
Bad Boy Ekhlas Ekhlas is a bad boy, not the type of bad that you generally admire. When he was little, his primary ... |
Color The Graph You are given an acyclic, bidirectional graph with N nodes and M edges. The nodes are numbered from ... |
Scary Big Chessboard Our friend Alice got stuck in a big chessboard. The chessboard has N rows and N columns. Some cells ... |
Mirror World Imagine a world inside mirror, where everything becomes reverse. Left hand becomes right hand, right... |
Kitchen Combinatorics The world-renowned Swedish Chef is planning a gourmet three-course dinner for some muppets: a starte... |
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... |
Geometry Forever Fear no more, this is a problem of geometry! When Moyna was little, he had a math teacher named Shuk... |
Challenge From Mr. Professor One Day Mr. Professor was taking His schedule class on Discrete Mathematics. In this lecture, He was... |
Magic Square A little boy Towhid is good at mathematics. He solves a lot of mathematical equation regularly. He i... |
Red and Green Suppose, there is an array of N integers. Each index of the array is either red or green. The first ... |
Game Show Alex is participating in a game show. Mr. Phil is the host of the game. Alex is provided with an arr... |