Set Union

Given two sets of integers, print the set containing the union of the two input sets. For example, g...

Another Query on String

You are given a string S (of length n) consisting of alphabets only. You need to perform m queries o...

Neat Brackets

Given a sequence of opening and closing parentheses ("(" and ")") you will have ...

Ice-Cream of Montu Mia Again!

Montu Mia is a student of “Omok School”. He likes to eat an ice-cream every day. But he also likes t...

Counting Friends

Johnny uses a social network called Supernova. Unlike the other social networks, Supernova does not ...

Rivalry Friends

Ryo and his girlfriend love to think about challenges. One day his girlfriend gave him a challenge t...

Matching Brackets

You will be given a sequence of opening and closing brackets of different types ((, ), [, ], {, and ...

Exists or Not Exists

You will be given some numbers. Then there will contain some queries. In every query there will be g...

Village Fair 2

There are N houses in a village far away from here. They are numbered from 1 to N. For this problem ...

Distinct Dishting

You are given an array of NNN integers. Then there will be QQQ commands of the following type: Cha...

Easy Prime!

There are N numbers in an array. You will have Q queries. In each query, you can make 2 operations. ...

A Super Easy Problem - "Array Query"

Let's get into the problem directly without much description this time :D . You are given an array A...

Phi Numbers in Range!

In number theory, Euler’s phi function, denoted as ϕ(n), is an arithmetic function which counts the ...

Laser Light

A 2D grid consists of a lot of special lights bulbs, which turns on upon the incidence of a laser li...

Mario and Princess Peach

The world of Mario can be imagined as 2D grid of NNN rows and MMM columns--containing a total of N×M...

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 char...

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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