45th ICPC Unsolved Problem!
ICPC is the oldest, largest, and most prestigious programming contest in the world. Each year, the I...
Who Is the Champion?
The ICPC traces its roots to 1970 when the first competition was hosted by pioneers of the Alpha Cha...
ICPC to LCPC
In the ICPC regional contest, you have got rejected for the ICPC World Finals contest selection. But...
I Did Not Do the Assignment
Professor Petr is very angry over some of his students now-a-days for not doing assignment. He wants...
ICPC Seat-Plan
From different countries and different universities, too many teams are coming to Bangladesh to part...
Alayna's Adventure Journey
Alayna recently went on her first adventure journey to Dumbulla Safari Park. She enjoyed the bumpy r...
Alayna and Vowels
Alayna loves playing. Every night before going to sleep, she plays different games with Baba. Now Al...
Sofdor Ali's Magical Blackboard!
Sofdor Ali found interest in mathematics very early in his life. And now, he wants to spread this in...
Arithmetic Sequence (Easy)
Arithmetic Sequence is a sequence of numbers where the difference between two consecutive numbers ar...
Alayna and Strings
Alayna's father Baba gifted her a nice alphabet book last month. And now Alayna is in love with alph...
GPA Calculator
Shibli is a very good student. He is very regular and attentive in his classes. He is very serious a...
Geometry Forever
Fear no more, this is a problem of geometry! When Moyna was little, he had a math teacher named Shuk...
Life of Decimals
Given any circle, if you divide the circumference of that circle with its diameter, you would always...
Make It Big!
You are given a number N (10 ≤ N ≤ 2×109). You have to perform exactly two swap operation. You can c...
Byang's Day Out!
Byang and his little brother Kuno loves Cricket. But they never went to the stadium to watch a match...
Burger King
Every day, more than 11 million guests visit BURGER KING® restaurants around the world. And they do ...
CGPA, the Golden Egg!
Jenith is a student of CSE of Metropolitan University (MU). Recently her fifth term’s result has bee...
Alice and the Chessboard
It's Sunday afternoon, and Alice is in her room trying to figure out the rules of the game called Ch...
Circle of Boltu
Boltu and Poltu are two best friends. Boltu loves to play games in computer. When class is off, inst...
Crossword Puzzles
A crossword puzzle is usually a grid of RxC cells. Initially, each cell is either empty or blocked. ...
Game of Tic-Tac-Toe
Alice and Bob is a playing a game of tic-tac-toe, to be precise a variant of tic-tac-toe called Nota...
Itsy's Magic Cards
Itsy needs your help with her magic cards. Her magic cards grant her special spider-witch powers. Un...
Palindromic Naming Convention
In Strangeland, people name their child in a cute way. I'm sure you already know the way by the prob...
Lexicographical Smallest String
There is a string $s$ of length $n$ containing lowercase letters and an integer $k$. Among the lette...
Yet Another Xinversion
The problem statement is simple. You are given a rooted tree (1 is the root) and every node has a co...
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