Zoba the Misleader Zoba has 3 strings, named S1, S2 and S3. He wanted to make a tough problem for Mihaf with these s... |
Bad XOR 2 (Hard) So after successfully becoming many people's nightmare, XOR has struck again, this time to haunt you... |
Kingdom of Equality There is a kingdom called DomKi. There are N cities and N – 1 bidirectional roads in DomKi. The citi... |
Preparing for War There were N cities in England. Each contained a warrior with skillset equal to X. All the cities we... |
Road Minister Techboy Techboy is appointed as the minister of roads and highway in his country Better-Not-Name-It. Now he ... |
Zer VS EEE Zer is a programmer who has a friend named Nir. Nir always shows off how great EEE is. One day Nir c... |
Directed Rectangle Sami has just finished his assignments, to relax, he wants to play games. Since he’s banned from PUB... |
Scary Tree Recently Alex has been learning about the tree data structure. And, he has been struggling to write ... |
Spreadsheet v1 Are you trying to find a problem that is easy to solve? Even if it involves writing a lot of code? T... |
Kingdom of Code Kingdom CODE is the most peaceful place in the universe. King NOVOSH and Queen ALMIDA is ruling this... |
Birthday Gifts Today is Luke's birthday. Mr. Phil Dunphy (Luke's father) has thrown a birthday party for him and de... |
Flow Finder Last summer, Carla the Cartographer went on an expedition on behalf of the National Center for Posit... |
Counting Friends Johnny uses a social network called Supernova. Unlike the other social networks, Supernova does not ... |
Haunting of Herobrine Herobrine's horror stories are known by many, but only a few dares to speak that name out loud, for ... |
Marbles Per Second You have a rooted tree of n nodes. If we traverse the tree from the root, let’s say the traversing o... |
Lets Play Pipeline In this problem you will have to solve a puzzle game named "Pipeline". 90's kids knows this game ver... |
The Archipelago of Mirpur The archipelago of Mirpur consists of N islands. The famous architect PogPog was hired to connect al... |
Village Fair 2 There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ... |
Simple And You are given a tree containing $N$ nodes. The nodes are numbered from $1$ to $N$. The root node of ... |
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... |
Explosion There is a house named Larcana. It is a very weird house. There are exactly N rooms in total and bet... |
MonoMono You have probably heard of the famous board game, Monopoly. According to Wikipedia, in this game, pl... |
Birthday Present?! As everyone gifts graphs or strings to people on their birthdays, Oyshee’s friends decided to do som... |
Big Bang Theory Dr. Sheldon Cooper is working on a project that works on the 2D concept of the universe. In this pro... |
Nilkhet You’re planning to start a library for the next n days, where you will rent books to students. Each ... |