Explosion There is a house named Larcana. It is a very weird house. There are exactly N rooms in total and bet... |
MEXimum Let’s get straight to the point. You are given a tree. In the tree, each node u has a number au ass... |
Productive Employees Congratulations on becoming the new boss of "Horizontal Company, branch: Sylhet"! But now you have a... |
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 Bangladesh.... |
Color The Graph You are given an acyclic, bidirectional graph with N nodes and M edges. The nodes are numbered from ... |
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 N vertices. A tree is a connected undirected graph without cycles. The tre... |
Water in a Tree There is a tree consist of N nodes and N−1 edges. The ith node contains Si liters of water with a t... |
Subtree MEX You will be given a balanced binary tree of N nodes. Each of the nodes of the tree will contain a no... |
Holy Tree What is a tree? A tree is a bidirectional connected graph with no cycle. In a tree, we can create ... |