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...
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 ...
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...
Keep Moving
Balurmath is a city which has N interesting tourist spots, which are connected between themselves by...
Do You Know Tree ?
"Stay at least one metre distance from others.” Corona has affected the World as well as Bangladesh....
Tree Queries
You are given a tree of n vertices. Each vertex contains an integer. Vertex 1 is the root of the tre...
Help to Be Happy
A country named Mueawin has one or more villages and one or more people live in every village. Two p...
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. ...
Multiverse Of Courier Service
Dr. Strange finally discovered a safe way to travel between parallel universes. By noticing people’s...
Milad's Lost Tree
Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ...
Bad XOR 2 (Hard)
So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you...
Set the Meeting
Three colleagues Motu, Biscuit and Ramjan are in Sundarbans now. They are on a mission to protect th...
Scarlet Speedster
The scarlet speedster of Central City, popularly known as the Flash is fighting an epic battle again...
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...
Identify the Level
Amin and Belal are two friends. Both have good knowledge about graph and tree in data structure part...
Sofdor Ali's Black and White Tree
Sofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it...
Kingdom of Code
Kingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this...
Haunting of Herobrine
Herobrine's horror stories are known by many, but only a few dares to speak that name out loud, for ...
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. ...
COVID-19 Outbreak
COVID-19 outbreak in Atlantis is so bad that the government is forced to lock down the whole country...
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,...
Taofiq the House Prefect
Tomorrow is a very special day for Taofiq. He is participating in an intra school quiz contest. As h...
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