City of Atlantis Have you ever heard of The Atlantis City? It’s a Greek mythological city. Its existence doesn’t matt... |
Tree Queries You are given a tree of n vertices. Each vertex contains an integer. Vertex 1 is the root of the tre... |
Mario and Princess Peach The world of Mario can be imagined as 2D grid of $N$ rows and $M$ columns--containing a total of $N ... |
Taju Kage Bunshin No Jutsu Naruto Uzumaki is one of the strongest ninja of RUET (Rasengan University of Ebisu and Tobi), posses... |
Distinctness A substring of string S is another string S' which occurs in string S. For example: S = aaba and one... |
Matching Brackets You will be given a sequence of opening and closing brackets of different types ((, ), [, ], {, and ... |
Smart Query Handler Bit operators perform bit-wise operations between two binary numbers. Wikipedia says, binary operati... |
Crayons Five friends A, B, C, D and E has come to a shop to buy crayons for their art project. They need cra... |
Distinct Dishting You are given an array of N integers. Then there will be Q commands of the following type: Change ... |
Subset of Sequences You will be given a set of sequences. Each sequence is a list of numbers. Two sequences are K-simila... |
Laser Light A 2D grid consists of a lot of special lights bulbs, which turns on upon the incidence of a laser li... |
Expandable ListView Minas is working on his new language. He want to add a feature call expandable listview. Here he exp... |
Palindrome Query I You are given a string of length L. You have Q queries. In each query, you will be asked to either u... |
Rio and Inversion One day Rio was returning home from his university and unfortunately lost his phone on the way. He a... |
Hamming Distance Hamming distance between two binary strings of equal length is the number of mismatches between ever... |
Subarray Sum You are given an array having N integers. You have to select at most K positions in the array and re... |
Memes vs. Social Media In this era of modern technology social media is the most powerful weapon and the viral issue is the... |
Sofdor Ali and Bracket Sequence Sofdor Ali has invented a new game. He asked his assistant Jong Bahadur ( who happens to be a monkey... |
Static Tree You are given a tree containing N vertices. The vertices are numbered from 1 to N. A tree with N ver... |
Cut the Rope Fahim is a rope seller. He has a special tool for cutting ropes. But recently this tool is behaving ... |
Village Fair 2 There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ... |
Byang and War Tactics Byang is learning about War Tactics from Raat, a famous martial arts master, who has successfully tr... |
Data Structure The operations that are performed in a data structure can be categorized into two types: query and u... |
Device ID A device ID is a distinct number associated with a smartphone or similar handheld device. Every smar... |
Perseus and The New Challenge The life of princess Andromeda, the daughter of King Cepheus and Queen Cassiopeia of Ados, is in dan... |