Road Minister Techboy Techboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ... |
Preparing for War There were N cities in England. Each contained a warrior with skillset equal to X. All the cities we... |
Scary Tree Recently Alex has been learning about the tree data structure. And, he has been struggling to write ... |
The Spy Cats After Max and Alexis's initial plan to conquer the world with kitten armies failed, they started a n... |
COVID-19 Outbreak COVID-19 outbreak in Atlantis is so bad that the government is forced to lock down the whole country... |
Circuit Breaker In your free time, you like to design various electrical circuits to give a hard time to your local ... |
Flow Finder Last summer, Carla the Cartographer went on an expedition on behalf of the National Center for Posit... |
Hasan the Treasure Hunter Benjamin Gates the treasure hunter opened a coaching center named Khajna Dibo Na where he teaches hi... |
Kingdom of Code Kingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this... |
Help to Be Happy A country named Mueawin has one or more villages and one or more people live in every village. Two p... |
Milad's Lost Tree Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ... |
Sayadpur City Bob wants to visit a new country called sayadpur. There are N cities (1,2,3,…,N) in sayadpur, and th... |
War in the Wizarding World There is a deadly war going on between two countries (Bitland and Byteland) in the wizarding world. ... |
XOR Tree You are given a tree with N vertices. A tree is a connected undirected graph without cycles. The tre... |
Explosion There is a house named Larcana. It is a very weird house. There are exactly N rooms in total and bet... |
Cheap Tourist The country of Byteland is divided into N provinces numbered from 1 to N. The provinces are connecte... |
Bad XOR 2 (Hard) So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you... |
MEXimum Let’s get straight to the point. You are given a tree. In the tree, each node u has a number au ass... |
T5 Racing It is high time for the annual T5 racing and your team is planning to win the race. In T5 racing the... |
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 ... |
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... |
Village Fair 2 There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ... |
Big Bang Theory Dr. Sheldon Cooper is working on a project that works on the 2D concept of the universe. In this pro... |
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 ... |