Sofdor Ali's Black and White Tree

Sofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it...

Plant Trees, Save Life

There are n students in a school. Some of them are friends with each other. You want to make the sch...

Kingdom - Great Roads of Destiny

Shin wants to be the “Great General of the Heaven”. It is his dream. But becoming a “Great General o...

Bad XOR 2 (Hard)

So after successfully becoming many people’s nightmare, XOR has struck again, this time to haunt you...

Kingdom of Code

Kingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this...

Prime Avoider

Mr. X is a friend of Hafiz bhai. Mr. X loves to play with numbers in his leisure but he hates prime ...

Darth Vader and 3PO on a Tree!

Did you watch Star Wars yet? No? You should in your free time. Now back to Darth Vader and 3PO. Dar...

Keep Moving

Balurmath is a city which has N interesting tourist spots, which are connected between themselves by...

Village Fair 2

There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ...

Circuit Breaker

In your free time, you like to design various electrical circuits to give a hard time to your local ...

Traveling Policy of Ajobdesh

In Ajobdesh, there are multiple cities and one of them is considered as the capital city. Obviously,...

War in the Wizarding World

There is a deadly war going on between two countries (Bitland and Byteland) in the wizarding world. ...

A Boring Game

Alice and Bob are playing a game with a tree with n nodes. Alice always plays first, and the two pla...

Gold Mines

The city of gridland is a grid with n rows and m columns. The city can be divided into n*m cells. A ...

Haunting of Herobrine

Herobrine’s horror stories are known by many, but only a few dares to speak that name out loud, for ...

Road Minister Techboy

Techboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ...

Big Bang Theory

Dr. Sheldon Cooper is working on a project that works on the 2D concept of the universe. In this pro...

The Spy Cats

After Max and Alexis’s initial plan to conquer the world with kitten armies failed, they started a n...

Life Saving Algorithm

Recently flood has vastly affected some regions of the country. So many people are helpless and suff...

Explosion

There is a house named Larcana. It is a very weird house .There are exactly N rooms in total and bet...

T5 Racing

It is high time for the annual T5 racing and your team is planning to win the race. In T5 racing the...

Zoba the Misleader

Zoba has 3 strings, named S1, S2 and S3. He wanted to make a tough problem for Mihaf with these stri...

Stephen, Bob, and Tomato's Canvas

If Stephen Hawking was right, then there is a universe where Bob Ross is a student of Tomato Yoshi. ...

Unfair Robot Race

Two teams of robots, Team A and Team B, are racing in a 2D grid. There will be a total of 6 rounds. ...

Scarlet Speedster

The scarlet speedster of Central City, popularly known as the Flash is fighting an epic battle again...

Preparing for War

There were N cities in England. Each contained a warrior with skillset equal to X. All the cities we...