Third Dimension

Mr. Jolonto Jotil, wanted to learn combinatorics. He opened a co...

Easy Sequence 1

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

Easy Sequence 2

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

Maximum Sum

Little Jimmy loves to play with numbers. One day he was playing ...

Counting Murgis

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

Polygon Construction (Hard)

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

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 ...

The Perfect Collection

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

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...

Burger King

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

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”...

Subarray Sum

You are given an array having N integers. You have to select at ...

LIDS

We all know about LIS ( Longest Increasing Sub sequence). The ta...

Very Dirty String

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

Orchid Division

Quido has a square orchard full of various fruit and nut trees. ...