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
The Selection
SUST has n departments numbered from 1 to n where every pair of distinct departments is connected by...
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...
Milad's Lost Tree
Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ...
Christmas Tree
Professor Rio has an amazing Christmas tree. Unlike other trees, this Christmas tree has some specia...
Scary Tree
Recently Alex has been learning about the tree data structure. And, he has been struggling to write ...
Prime Avoider
Mr. X is a friend of Hafiz bhai. Mr. X loves to play with numbers in his leisure but he hates prime ...
Do You Know Tree ?
"Stay at least one metre distance from others.” Corona has affected the World as well as Bangladesh....
Big Bang Theory
Dr. Sheldon Cooper is working on a project that works on the 2D concept of the universe. In this pro...
Poltu and Minimum Spanning Tree
Boltu gave a simple task to his best friend Poltu. You are a good programmer. So, Poltu hired you to...
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...
Color The Graph
You are given an acyclic, bidirectional graph with N nodes and M edges. The nodes are numbered from ...
How Many Ways?
Regular problem solvers starts their journey by solving ad hoc and number theory. After getting the ...
I Hate Long Description
There are N cities in the country AjobDesh and M one way roads connecting the cities. There lives ex...
Hidden Graph
There is an unweighted, undirected hidden graph. You are given an integer range from L to R. There a...
Hasan the Treasure Hunter
Benjamin Gates the treasure hunter opened a coaching center named Khajna Dibo Na where he teaches hi...
Adam Young
“It's hard to say that I'd rather stay awake when I'm asleep 'Cause everything is never as it seems ...
Kingdom of Code
Kingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this...
Many Paths, Many Costs
Alice and Bob are visiting Byteland. They are observing the map of this country. Surprisingly, the m...
Explosion
There is a house named Larcana. It is a very weird house. There are exactly N rooms in total and bet...
Flow on Tree
Mr. Kaboom has recently learned about maximum flow. Now his friend Mr. Taboom gave him this problem....
Bad XOR 2 (Hard)
So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you...
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
Traveling Policy of Ajobdesh
In Ajobdesh, there are multiple cities and one of them is considered as the capital city. Obviously,...
T5 Racing
It is high time for the annual T5 racing and your team is planning to win the race. In T5 racing the...
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