Flow on Tree
Mr. Kaboom has recently learned about maximum flow. Now his friend Mr. Taboom gave him this problem....
Wakanda Forever
We all know that Thanos has erased half of the population of the universe. Earth’s population was al...
War in the Wizarding World
There is a deadly war going on between two countries (Bitland and Byteland) in the wizarding world. ...
Sofdor Ali's Black and White Tree
Sofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it...
Act of Random Kindness (Hard)
Sammy and Meera liked adventures a lot. Once in a while they used to set out adventures. This time t...
Keep Moving
Balurmath is a city which has N interesting tourist spots, which are connected between themselves by...
Spanning Tree
There are N nodes in a tree. You can start from any node of that tree and you have to come back to t...
Graph Moderate 80/86/125
Village Fair 2
There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ...
Prime Avoider
Mr. X is a friend of Hafiz bhai. Mr. X loves to play with numbers in his leisure but he hates prime ...
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,...
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 ...
DFS, Graph Moderate 53/68/260
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...
Christmas Tree
Professor Rio has an amazing Christmas tree. Unlike other trees, this Christmas tree has some specia...
The Spy Cats
After Max and Alexis's initial plan to conquer the world with kitten armies failed, they started a n...
Reverse The Magic
You are probably familiar with the technique of representing a Tree as an array of integers using Eu...
Life Saving Algorithm
Recently flood has vastly affected some regions of the country. So many people are helpless and suff...
How Many Ways?
Regular problem solvers starts their journey by solving ad hoc and number theory. After getting the ...
Hasan the Treasure Hunter
Benjamin Gates the treasure hunter opened a coaching center named Khajna Dibo Na where he teaches hi...
Meena Meets The Marauders
December 14, 1975 Hogwarts School of Witchcraft and Wizardry It’s been a long long day. The Marauder...
Tahsin and Tree
Tahsin loves graph theory very much. He is especially fond of trees. For his upcoming birthday his f...
City of Atlantis
Have you ever heard of The Atlantis City? It’s a Greek mythological city. Its existence doesn’t matt...
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