Identify the Level Amin and Belal are two friends. Both have good knowledge about graph and tree in data structure part... |
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... |
COVID-19 Outbreak COVID-19 outbreak in Atlantis is so bad that the government is forced to lock down the whole country... |
Traveling Policy of Ajobdesh In Ajobdesh, there are multiple cities and one of them is considered as the capital city. Obviously,... |
A Boring Game Alice and Bob are playing a game with a tree with n nodes. Alice always plays first, and the two pla... |
Keep Moving Balurmath is a city which has N interesting tourist spots, which are connected between themselves by... |
MEXimum Let’s get straight to the point. You are given a tree. In the tree, each node u has a number au ass... |
Tree Queries You are given a tree of n vertices. Each vertex contains an integer. Vertex 1 is the root of the tre... |
Concatenation of Perfect Squares You are given a positive integer number. You have to determine whether this number can be represente... |
Sayadpur City Bob wants to visit a new country called sayadpur. There are N cities (1,2,3,…,N) in sayadpur, and th... |
Sofdor Ali's Black and White Tree Sofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it... |
Tahsin and Tree Tahsin loves graph theory very much. He is especially fond of trees. For his upcoming birthday his f... |
Road Minister Techboy Techboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ... |
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 ... |
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... |
Milad's Lost Tree Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ... |
Scary Tree Recently Alex has been learning about the tree data structure. And, he has been struggling to write ... |
Life Saving Algorithm Recently flood has vastly affected some regions of the country. So many people are helpless and suff... |
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... |
Circuit Breaker In your free time, you like to design various electrical circuits to give a hard time to your local ... |
Tasks Zico is a fan of Artificial Intelligence (AI). So he is doing a course on AI and even likes the teac... |
Hasinur's Mission! Let me tell you something about Hasinur: He is a religious person. He prays 5 times a day. He loves... |
Help to Be Happy A country named Mueawin has one or more villages and one or more people live in every village. Two p... |