Explosion

There is a house named Larcana. It is a very weird house. There are exactly N rooms in total and bet...

Police Stations

Recently the government of country S is going to construct some police stations(possibly zero) in so...

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...

Do You Know Tree ?

"Stay at least one metre distance from others.” Corona has affected the World as well as Bangla...

Color The Graph

You are given an acyclic, bidirectional graph with NNN nodes and M edges. The nodes are numbered fro...

Race in DomKi

There is a kingdom called DomKi. DomKi has N city and N-1 two-way road. Each city is numbered with 1...

XOR Tree

You are given a tree with NNN vertices. A tree is a connected undirected graph without cycles. The t...

Subtree MEX

You will be given a balanced binary tree of NNN nodes. Each of the nodes of the tree will contain a ...

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