Passwords

Alice wants to extract some passwords from a random string. A pa...

T5 Racing

It is high time for the annual T5 racing and your team is planni...

Game of Palindromes

In a popular computer game, Game of Palindromes also known as GO...

Counting Murgis

Ever since that wicked thief took away some of her murgis (hens,...

Game of Tic-Tac-Toe

Alice and Bob is a playing a game of tic-tac-toe, to be precise ...

Unique Relief

Thanos has now figured out how to visit all the houses in the fl...

Paranoid Trading

You have been newly appointed as the accountant of Michael Corle...

Very Dirty String

Strings are difficult, most of the contest programmers say this ...

Easy Sequence 1

Let’s define an easy sequence F. Where $ F(1) = 1 $ $ F(2X) = ...

Easy Sequence 2

Let’s define a easy sequence F. Where $ F(1) = 1 $ $ F(2X) = F...

Diagonal Sum

Given an N*N size matrix, you have to re-arrange the elements of...

Buildings

There are n buildings in a row. The height of the i’th building ...

Flow on Tree

Mr. Kaboom has recently learned about maximum flow. Now his frie...

Polygon Construction (Hard)

Meera in going to picnic with her friends. They are going to hav...

Third Dimension

Mr. J wants to learn about combinatorics. He started reading a b...

No GCD

You are given N integers. Each integer is square free (i.e. it h...

OCD Returns!

This problem author has OCD (obsessive–compulsive disorder). One...

The Game of Rocks

Alice and Bob have come up with a new game. Bob gives Alice a N...

Gaaner Koli

The protagonists of this problem are two great programmers of a ...

Flyover in Twinland

Rio has become the president of Twinland. Now he wants to develo...

The Perfect Collection

Given an array A of N integers, if we choose any K of these inte...

Darth Vader and 3PO on a Tree!

Did you watch Star Wars yet? No? You should in your free time. ...

Sticking Pins

You are sticking pins on a 2D board at N given coordinates. Howe...

Smart Feature Phone 2

Alice worked in CIA. Right now he need to send an encrypted me...

Perseus and The New Challenge

The life of princess Andromeda, the daughter of King Cepheus and...

Dominoes Forever

Once when I was little, my father took me to a tobacco shop! It ...

Pathetic Interview II

You all know about the story of Pathetic Interview-I. Today, I a...

Road Minister Techboy

Techboy is appointed as the minister of roads and highway in his...

Burger King

Every day, more than 11 million guests visit BURGER KING® restau...

Game of Strings

Redoan is very fond of strings. He wants to go on a spree of sol...

Harry Potter and the Vault of Gringotts

“There was a break-in of Gringotts Wizarding Bank on 1 May, 1998...

Alice in Candyland

Alice came up with a new game. In this game called “Candy Quest”...

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