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 ... |
Help to Be Happy A country named Mueawin has one or more villages and one or more people live in every village. Two p... |
Preparing for War There were N cities in England. Each contained a warrior with skillset equal to X. All the cities we... |
Kingdom of Code Kingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this... |
Change Queries Today is a very special day for Rubel. Recently he got a job in a software company. Now today is the... |
War in the Wizarding World There is a deadly war going on between two countries (Bitland and Byteland) in the wizarding world. ... |
Hide and Seek You know how to play hide-and-seek, right? In a group of kids, one of them is selected to be the see... |
Big Bang Theory Dr. Sheldon Cooper is working on a project that works on the 2D concept of the universe. In this pro... |
MangoSmash Your friend has come to visit the RUET campus. As the Mango season goes on ⋯, he/she said “Mama Aam ... |
T5 Racing It is high time for the annual T5 racing and your team is planning to win the race. In T5 racing the... |
Zoba the Misleader Zoba has 3 strings, named S1, S2 and S3. He wanted to make a tough problem for Mihaf with these s... |
Pretty Diabolical TRAOMBINNAA is going to be Billy Butcher's base for the next season of the boys. He is going to buil... |
Hasan the Treasure Hunter Benjamin Gates the treasure hunter opened a coaching center named Khajna Dibo Na where he teaches hi... |
Flow Finder Last summer, Carla the Cartographer went on an expedition on behalf of the National Center for Posit... |
The Spy Cats After Max and Alexis's initial plan to conquer the world with kitten armies failed, they started a n... |
Village Fair 2 There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ... |
Sayadpur City Bob wants to visit a new country called sayadpur. There are N cities (1,2,3,…,N) in sayadpur, and th... |
COVID-19 Outbreak COVID-19 outbreak in Atlantis is so bad that the government is forced to lock down the whole country... |
Lets Play Pipeline In this problem you will have to solve a puzzle game named "Pipeline". 90's kids knows this game ver... |
Bad XOR 2 (Hard) So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you... |
Concatenation of Perfect Squares You are given a positive integer number. You have to determine whether this number can be represente... |
Scary Tree Recently Alex has been learning about the tree data structure. And, he has been struggling to write ... |
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... |
Circuit Breaker In your free time, you like to design various electrical circuits to give a hard time to your local ... |