Identify the Level Amin and Belal are two friends. Both have good knowledge about graph and tree in data structure part... |
Tree Queries You are given a tree of n vertices. Each vertex contains an integer. Vertex 1 is the root of the tre... |
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... |
Hidden Graph There is an unweighted, undirected hidden graph. You are given an integer range from L to R. There a... |
Itsy's Magic Cards Itsy needs your help with her magic cards. Her magic cards grant her special spider-witch powers. Un... |
Birthday Gifts Today is Luke's birthday. Mr. Phil Dunphy (Luke's father) has thrown a birthday party for him and de... |
Elementary Math Ellen is teaching elementary math to her students and the time for the final exam has come. The exam... |
Flow Finder Last summer, Carla the Cartographer went on an expedition on behalf of the National Center for Posit... |
Road Minister Techboy Techboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ... |
Multiverse Of Courier Service Dr. Strange finally discovered a safe way to travel between parallel universes. By noticing people’s... |
Milad's Lost Tree Milad likes trees so much. He has a rooted tree with $n$ vertices each of which has some non-negativ... |
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... |
Set the Meeting Three colleagues Motu, Biscuit and Ramjan are in Sundarbans now. They are on a mission to protect th... |
Scarlet Speedster The scarlet speedster of Central City, popularly known as the Flash is fighting an epic battle again... |
Best Place to Arrange Contest We are going to arrange the 7th CPU CSE programming contest in our department. But to arrange a cont... |
Bad XOR 2 (Hard) So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you... |
Sofdor Ali's Black and White Tree Sofdor Ali loves Computer Science. He prefers hexadecimal number system to decimals, just because it... |
Haunting of Herobrine Herobrine's horror stories are known by many, but only a few dares to speak that name out loud, for ... |
Kingdom of Code Kingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this... |
Stephen, Bob, and Tomato's Canvas If Stephen Hawking was right, then there is a universe where Bob Ross is a student of Tomato Yoshi. ... |
COVID-19 Outbreak COVID-19 outbreak in Atlantis is so bad that the government is forced to lock down the whole country... |
Keep Moving Balurmath is a city which has N interesting tourist spots, which are connected between themselves by... |
Village Fair 2 There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ... |
Circuit Breaker In your free time, you like to design various electrical circuits to give a hard time to your local ... |
Unfair Robot Race Two teams of robots, Team A and Team B, are racing in a 2D grid. There will be a total of 6 rounds. ... |