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... |
Preparing for War There were N cities in England. Each contained a warrior with skillset equal to X. All the cities we... |
Simple And You are given a tree containing $N$ nodes. The nodes are numbered from $1$ to $N$. The root node of ... |
Explosion There is a house named Larcana. It is a very weird house. There are exactly N rooms in total and bet... |
Help to Be Happy A country named Mueawin has one or more villages and one or more people live in every village. Two p... |
Hasinur's Mission! Let me tell you something about Hasinur: He is a religious person. He prays 5 times a day. He loves... |
Tasks Zico is a fan of Artificial Intelligence (AI). So he is doing a course on AI and even likes the teac... |
Circuit Breaker In your free time, you like to design various electrical circuits to give a hard time to your local ... |
Memes vs. Social Media In this era of modern technology social media is the most powerful weapon and the viral issue is the... |
Change Queries Today is a very special day for Rubel. Recently he got a job in a software company. Now today is the... |
Life Saving Algorithm Recently flood has vastly affected some regions of the country. So many people are helpless and suff... |
Scary Tree Recently Alex has been learning about the tree data structure. And, he has been struggling to write ... |
Milad's Lost Tree Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ... |
Darth Vader and 3PO on a Tree! Did you watch Star Wars yet? No? You should in your free time. Now back to Darth Vader and 3PO. Dart... |
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 ... |
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 ... |
Shortest Path? Given an unweighted, undirected and connected graph consists of $N$ nodes numbered from $1$ to $N$. ... |
Road Minister Techboy Techboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ... |
Tahsin and Tree Tahsin loves graph theory very much. He is especially fond of trees. For his upcoming birthday his f... |
Scarlet Speedster The scarlet speedster of Central City, popularly known as the Flash is fighting an epic battle again... |
Sofdor Ali's Black and White Tree Sofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it... |
Sayadpur City Bob wants to visit a new country called sayadpur. There are N cities (1,2,3,…,N) in sayadpur, and th... |
Concatenation of Perfect Squares You are given a positive integer number. You have to determine whether this number can be represente... |
Tree Queries You are given a tree of n vertices. Each vertex contains an integer. Vertex 1 is the root of the tre... |
Set the Meeting Three colleagues Motu, Biscuit and Ramjan are in Sundarbans now. They are on a mission to protect th... |