StackLang
StackLang is a stack-based programming language. Here, each program contains a series of commands th...
Holy Tree
What is a tree? A tree is a bidirectional connected graph with no cycle. In a tree, we can create ...
Set Union
Given two sets of integers, print the set containing the union of the two input sets. For example, g...
Big Tang Theory
Shell Don (Shelly in short) is a theoretical physicist who is claimed to be highly intelligent with ...
Easy Prime!
There are N numbers in an array. You will have Q queries. In each query, you can make 2 operations. ...
Matching Brackets
You will be given a sequence of opening and closing brackets of different types ((, ), [, ], {, and ...
Neat Brackets
Given a sequence of opening and closing parentheses ("(" and ")") you will have to determine if it i...
Distinct Dishting
You are given an array of N integers. Then there will be Q commands of the following type: Change ...
GCD and Sum
Congratulations! You’ve been hired in “Buggy Software Ltd.” And you’ve been already given your first...
Rivalry Friends
Ryo and his girlfriend love to think about challenges. One day his girlfriend gave him a challenge t...
MEXimum
Let’s get straight to the point. You are given a tree. In the tree, each node u has a number au​ ass...
Naughty Subsequence - V2.0
Mahib loves ‘Naughty Subsequence’-s. He will give you an array of characters ara[0,1,...,n-1] that c...
mashfiqur404 DP, DataStructure Very Easy 29/33/67
Taju Kage Bunshin No Jutsu
Naruto Uzumaki is one of the strongest ninja of RUET (Rasengan University of Ebisu and Tobi), posses...
ICPC World Final
ICPC (International Collegiate Programming Contest) World final is one of the most prestigious conte...
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 ...
Distinctness
A substring of string S is another string S' which occurs in string S. For example: S = aaba and one...
Final Days of Goldfinger
We see agent Bond once again being called in time of a great need. The vile criminal Auric Goldfinge...
Smart Query Handler
Bit operators perform bit-wise operations between two binary numbers. Wikipedia says, binary operati...
Primary Key
"Clarity-Lon" is the new awesome e-commerce based startup that went to the top of the chart within f...
Earthquake!
Most houses are not as safe as they could be. Earthquake engineering is an interdisciplinary branch ...
Expandable ListView
Minas is working on his new language. He want to add a feature call expandable listview. Here he exp...
Rio and Inversion
One day Rio was returning home from his university and unfortunately lost his phone on the way. He a...
New Year Couple
The new year 2017 is here. To celebrate the 31st night, Mr Rio has thrown a big party at his house. ...
Subarray Sum
You are given an array having N integers. You have to select at most K positions in the array and re...
Sofdor Ali and Bracket Sequence
Sofdor Ali has invented a new game. He asked his assistant Jong Bahadur ( who happens to be a monkey...
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