MEXimum
Let’s get straight to the point. You are given a tree. In the tree, each node u has a number au​ ass...
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...
Tahsin and Tree
Tahsin loves graph theory very much. He is especially fond of trees. For his upcoming birthday his f...
Identify the Level
Amin and Belal are two friends. Both have good knowledge about graph and tree in data structure part...
MonoMono
You have probably heard of the famous board game, Monopoly. According to Wikipedia, in this game, pl...
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...
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...
Sofdor Ali's Black and White Tree
Sofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it...
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...
Keep Moving
Balurmath is a city which has N interesting tourist spots, which are connected between themselves by...
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...
Best Place to Arrange Contest
We are going to arrange the 7th CPU CSE programming contest in our department. But to arrange a cont...
Bad XOR 2 (Hard)
So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you...
Circuit Breaker
In your free time, you like to design various electrical circuits to give a hard time to your local ...
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 ...
Village Fair 2
There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ...
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. ...
Taofiq the House Prefect
Tomorrow is a very special day for Taofiq. He is participating in an intra school quiz contest. As h...
Hide and Seek
You know how to play hide-and-seek, right? In a group of kids, one of them is selected to be the see...
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...
Explosion
There is a house named Larcana. It is a very weird house. There are exactly N rooms in total and bet...
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