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. Dart...
Preparing for War
There were N cities in England. Each contained a warrior with skillset equal to X. All the cities we...
Tree Queries
You are given a tree of n vertices. Each vertex contains an integer. Vertex 1 is the root of the tre...
Yet Another XOR Problem
Given a rooted tree with N nodes where each node has a value, find a pair of nodes (u, v) so that u ...
Do You Know Tree ?
"Stay at least one metre distance from others.” Corona has affected the World as well as Bangladesh....
Keep Moving
Balurmath is a city which has N interesting tourist spots, which are connected between themselves by...
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...
Help to Be Happy
A country named Mueawin has one or more villages and one or more people live in every village. Two p...
Life Saving Algorithm
Recently flood has vastly affected some regions of the country. So many people are helpless and suff...
Traveling Policy of Ajobdesh
In Ajobdesh, there are multiple cities and one of them is considered as the capital city. Obviously,...
Tahsin and Tree
Tahsin loves graph theory very much. He is especially fond of trees. For his upcoming birthday his f...
The Spy Cats
After Max and Alexis's initial plan to conquer the world with kitten armies failed, they started a n...
Circuit Breaker
In your free time, you like to design various electrical circuits to give a hard time to your local ...
Hasan the Treasure Hunter
Benjamin Gates the treasure hunter opened a coaching center named Khajna Dibo Na where he teaches hi...
Kingdom of Code
Kingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this...
War in the Wizarding World
There is a deadly war going on between two countries (Bitland and Byteland) in the wizarding world. ...
Tasks
Zico is a fan of Artificial Intelligence (AI). So he is doing a course on AI and even likes the teac...
Concatenation of Perfect Squares
You are given a positive integer number. You have to determine whether this number can be represente...
Bad XOR 2 (Hard)
So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you...
A Boring Game
Alice and Bob are playing a game with a tree with n nodes. Alice always plays first, and the two pla...
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...
Haunting of Herobrine
Herobrine's horror stories are known by many, but only a few dares to speak that name out loud, for ...
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 48/62/247
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