# Problems

#### Game of Tic-Tac-Toe, Again

Alice and Bob are playing a game of Tic-tac-toe, to be precise a variant of tic-tac-toe called Notak...

#### Next Permutation

A sequence of NNN distinct integers is called a permutation if all the integers are between 111 and ...

#### Guti Khela

Guti Khela is an ancient village game of Bangladesh. This game is played between 2 players by diggin...

#### Hououin Kyouma!

Okabe Rintarou, the mad scientist is doing research to find the most desired Steins Gate. Besides be...

Today is Luke's birthday. Mr. Phil Dunphy (Luke's father) has thrown a birthday party for him and de...

#### Poga The War Stopper

Poga is a war victim who lost everyone dear to her in war. Now, she leads a team of veterans who try...

#### Flower Garden

Trisha and her little sister Rafa loves gardening. They plant trees and water them everyday. When th...

#### Lucky String

In your last programming class, you learned about octal number, string concatenation, sorting and gr...

Ekhlas is a bad boy, not the type of bad that you generally admire. When he was little, his primary ...

What is the answer to the ultimate question of Life, the universe, and everything? It is You will b...

#### Chor Tintin Tikri

A new land, what we call “chor”, has emerged. Local people have already given it a name “Chor Tintin...

#### Mr. X and Balloon Race

Mr. X is going to plan a game for the upcoming picnic for his company. Here are the rules, Every tea...

#### Knight and Bishop

We all know about the chess game. Chess game is played on 8x8 board. Now, Alice and Bob come to play...

#### Elpis

Given find f(a, b) mod m.

#### Optimal Walk

IIKI is in great trouble. In the game called BIIKI, The Hero CIIKI gets power MMM for per kilometer ...

#### Trust me, this is stopper!

Do you know Doctor Strange from Marvel? He thought he was the master of time. But one day he came to...

#### CloX

Given two clocks with no digits printed on them and only two hands, one smaller for hour and one big...

#### Nearest Light

We, iuian develop a virtual vertical line with infinite length are numbered starting from zero from ...

#### Shopping Mania

Shapla and Jui have entered the final round of Shopping Mania, an annual shopping game played by two...

There will be a list of events and each event will contain a number of tasks. Each event will have a...

Mary is an intellectually gifted 7-year-old girl. On her first day at school, she impressed her math...

#### Reduce Articulation Point

Given a tree. Tree is an undirected connected acyclic graph. Wiki You should add exactly one edge t...

#### Tricky Racer

Talent Bob is a galaxy wide known legend and a racer (in game :P). He always wins races by his trick...

#### Defeat in Final Battle

Sifatul Islam is a great fan of Iron man. He is planning to make a suit for iron man. The suit can s...

#### Meera and Solo Chocolates

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