PolandBall and Many Other Balls
PolandBall is standing in a row with Many Other Balls. More precisely, there are exactly n Balls. Balls are proud of their home land — and they want […]
Month: May 2020
Travel Card
A new innovative ticketing systems for public transport is introduced in Bytesburg. Now there is a single travel card for all transport. To make a […]
Pavel and barbecue
Pavel cooks barbecue. There are n skewers, they lay on a brazier in a row, each on one of n positions. Pavel wants each skewer to be cooked some […]
Nikita and stack
Nikita has a stack. A stack in this problem is a data structure that supports two operations. Operation push(x) puts an integer x on the top of the stack, […]
Bacterial Melee
Julia is conducting an experiment in her lab. She placed several luminescent bacterial colonies in a horizontal testtube. Different types of bacteria can be distinguished […]
A Serial Killer
Our beloved detective, Sherlock is currently trying to catch a serial killer who kills a person each day. Using his powers of deduction, he came […]
Sherlock and his girlfriend
Sherlock has a new girlfriend (so unlike him!). Valentine’s day is coming and he wants to gift her some jewelry. He bought n pieces of jewelry. The i-th […]
The Holmes Children
The Holmes children are fighting over who amongst them is the cleverest. Mycroft asked Sherlock and Eurus to find value of f(n), where f(1) = 1 and for n ≥ 2, f(n) is the number […]
Molly’s Chemicals
Molly Hooper has n different kinds of chemicals arranged in a line. Each of the chemicals has an affection value, The i-th of them has affection value a i. Molly […]
The Door Problem
Moriarty has trapped n people in n distinct rooms in a hotel. Some rooms are locked, others are unlocked. But, there is a condition that the people in the […]
Sherlock and the Encrypted Data
Sherlock found a piece of encrypted data which he thinks will be useful to catch Moriarty. The encrypted data consists of two integer l and r. He noticed […]
Sherlock’s bet to Moriarty
Sherlock met Moriarty for a final battle of wits. He gave him a regular n sided convex polygon. In addition to it, he gave him certain diagonals […]
Carrot Cakes
In some game by Playrix it takes t minutes for an oven to bake k carrot cakes, all cakes are ready at the same moment t minutes after they started baking. […]
T-shirt buying
A new pack of n t-shirts came to a shop. Each of the t-shirts is characterized by three integers p i, a i and b i, where p i is the price of the i-th t-shirt, a i is front color […]
Field expansion
In one of the games Arkady is fond of the game process happens on a rectangular field. In the game process Arkady can buy extensions […]
Beautiful fountains rows
Butler Ostin wants to show Arkady that rows of odd number of fountains are beautiful, while rows of even number of fountains are not. The […]
Cut the pie
Arkady reached the n-th level in Township game, so Masha decided to bake a pie for him! Of course, the pie has a shape of convex n-gon, […]
Aquarium decoration
Arkady and Masha want to choose decorations for thier aquarium in Fishdom game. They have n decorations to choose from, each of them has some cost. To […]
Sorting by Subsequences
You are given a sequence a 1, a 2, …, a n consisting of different integers. It is required to split this sequence into the maximum number of subsequences such that after sorting integers in each of […]
