Identify the Level Amin and Belal are two friends. Both have good knowledge about graph and tree in data structure part... |
How Many Ways? Regular problem solvers starts their journey by solving ad hoc and number theory. After getting the ... |
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... |
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... |
Directed Rectangle Sami has just finished his assignments, to relax, he wants to play games. Since he’s banned from PUB... |
Hidden Graph There is an unweighted, undirected hidden graph. You are given an integer range from L to R. There a... |
The Archipelago of Mirpur The archipelago of Mirpur consists of N islands. The famous architect PogPog was hired to connect al... |
Prime Avoider Mr. X is a friend of Hafiz bhai. Mr. X loves to play with numbers in his leisure but he hates prime ... |
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... |
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 ... |
A Boring Game Alice and Bob are playing a game with a tree with n nodes. Alice always plays first, and the two pla... |
Gujob You probably heard the name of 'Kababdesh', where people are very fond of kababs. Everyone live ther... |
Itsy's Magic Cards Itsy needs your help with her magic cards. Her magic cards grant her special spider-witch powers. Un... |
Multiverse Of Courier Service Dr. Strange finally discovered a safe way to travel between parallel universes. By noticing people’s... |
Seven Kingdoms! The dragon queen just conquered the Seven Kingdoms. Initially there are N cities in "Seven Kingdoms"... |
Rik, the Space Traveler Mr. Rik is a famous space traveler. He lives in a galaxy named Victa. There are many planets in this... |
Milad's Lost Tree Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ... |
I Hate Long Description There are N cities in the country AjobDesh and M one way roads connecting the cities. There lives ex... |
Tree Queries You are given a tree of n vertices. Each vertex contains an integer. Vertex 1 is the root of the tre... |
Life Saving Algorithm Recently flood has vastly affected some regions of the country. So many people are helpless and suff... |
Cheap Tourist The country of Byteland is divided into N provinces numbered from 1 to N. The provinces are connecte... |
MEXimum Let’s get straight to the point. You are given a tree. In the tree, each node u has a number au ass... |
On My Way One fine morning you discovered yourself standing in a maze. The maze can be considered a connected ... |
Nilkhet You’re planning to start a library for the next n days, where you will rent books to students. Each ... |
Simple And You are given a tree containing $N$ nodes. The nodes are numbered from $1$ to $N$. The root node of ... |