How Many Ways? Regular problem solvers starts their journey by solving ad hoc and number theory. After getting the ... |
Identify the Level Amin and Belal are two friends. Both have good knowledge about graph and tree in data structure part... |
Itsy's Magic Cards Itsy needs your help with her magic cards. Her magic cards grant her special spider-witch powers. Un... |
Meena Meets The Marauders December 14, 1975 Hogwarts School of Witchcraft and Wizardry It’s been a long long day. The Marauder... |
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... |
I Hate Long Description There are N cities in the country AjobDesh and M one way roads connecting the cities. There lives ex... |
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... |
Fortis Fortuna Adiuvat Your very close friend, John, also known as the Baba Yaga, is often on various missions to complete ... |
Keep Moving Balurmath is a city which has N interesting tourist spots, which are connected between themselves by... |
Taofiq the House Prefect Tomorrow is a very special day for Taofiq. He is participating in an intra school quiz contest. As h... |
MEXimum Let’s get straight to the point. You are given a tree. In the tree, each node u has a number au ass... |
Set the Meeting Three colleagues Motu, Biscuit and Ramjan are in Sundarbans now. They are on a mission to protect th... |
Tree Queries You are given a tree of n vertices. Each vertex contains an integer. Vertex 1 is the root of the tre... |
Hidden Graph There is an unweighted, undirected hidden graph. You are given an integer range from L to R. There a... |
Concatenation of Perfect Squares You are given a positive integer number. You have to determine whether this number can be represente... |
Directed Rectangle Sami has just finished his assignments, to relax, he wants to play games. Since he’s banned from PUB... |
Sayadpur City Bob wants to visit a new country called sayadpur. There are N cities (1,2,3,…,N) in sayadpur, and th... |
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... |
Sofdor Ali's Black and White Tree Sofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it... |
Scarlet Speedster The scarlet speedster of Central City, popularly known as the Flash is fighting an epic battle again... |
Counting Friends Johnny uses a social network called Supernova. Unlike the other social networks, Supernova does not ... |
Tahsin and Tree Tahsin loves graph theory very much. He is especially fond of trees. For his upcoming birthday his f... |
Act of Random Kindness (Hard) Sammy and Meera liked adventures a lot. Once in a while they used to set out adventures. This time t... |