Ksusha and Array

brute force, number theory, sortings

Shaass and Oskols

implementation, math

Spyke Talks

*special problem, implementation, sortings

Cows and Poker Game

brute force, implementation

Bit++

implementation

Word Capitalization

implementation, strings

Circle Line

implementation

Lunch Rush

implementation

Lights Out

implementation

Dima and Friends

implementation, math

Beautiful Year

brute force

Buttons

implementation, math

Games

brute force

Subtractions

math, number theory

Queue at the School

constructive algorithms, graph matchings, implementation, shortest paths

Stones on the Table

implementation

Roadside Trees (Simplified Edition)

greedy, implementation

Colorful Stones (Simplified Edition)

implementation

Squares

greedy, implementation, sortings

Beautiful Matrix

implementation

Roma and Lucky Numbers

implementation

Little Elephant and Chess

brute force, strings

Greg's Workout

implementation

Paper Work

greedy

Cupboards

implementation

Buggy Sorting

constructive algorithms, greedy, sortings

System Administrator

implementation

Dividing Orange

implementation

Free Cash

implementation

Boy or Girl

brute force, implementation, strings

Reading

sortings

Perfect Permutation

implementation, math

Team

brute force, greedy

Dragons

greedy, sortings

Is your horseshoe on the other hoof?

implementation

Little Elephant and Function

implementation, math

k-String

implementation, strings

Bicycle Chain

brute force, implementation

System of Equations

brute force

Dubstep

strings

Little Elephant and Rozdil

brute force, implementation

LLPS

binary search, bitmasks, brute force, greedy, implementation, strings

Drinks

implementation, math

Hexadecimal's theorem

brute force, constructive algorithms, implementation, number theory

Let's Watch Football

binary search, brute force, math

Exams

implementation, math

Vasya's Calendar

implementation

Series of Crimes

brute force, geometry, implementation

Educational Game

greedy

Educational Game

Rectangular Game

number theory

Good Matrix Elements

implementation

Good Matrix Elements

implementation

Phone Code

*special problem, brute force, implementation

Chores

sortings

Wizards and Demonstration

implementation, math

Supercentral Point

implementation

Twins

greedy, sortings

Next Round

*special problem, implementation

Trace

geometry, sortings

Game Outcome

brute force

I_love_\%username\%

brute force

Marks

implementation

Soft Drinking

implementation, math

Business trip

greedy, implementation, sortings

Insomnia cure

constructive algorithms, implementation, math

Lucky Ticket

implementation

Arrival of the General

implementation

Help Vasilisa the Wise 2

brute force, math

Amusing Joke

implementation, sortings, strings

Petr and Book

implementation

Permutation

greedy

Postcards and photos

implementation

Presents

implementation

HQ9+

implementation

cAPS lOCK

implementation, strings

Hexagonal numbers

*special problem, implementation

Cookies

implementation

Canvas Frames

implementation

Wasted Time

geometry

Simple XML

implementation

The number of positions

math

Lucky Substring

brute force, implementation

Lucky Division

brute force, number theory

Elevator

brute force, implementation, math

Epic Game

implementation

Present from Lena

constructive algorithms, implementation

String Task

implementation, strings

Tram

implementation

Party

dfs and similar, graphs, trees

Cifera

math

Petya and Strings

implementation, strings

Nearly Lucky Number

implementation

Lucky Sum of Digits

brute force, implementation

Palindromic Times

implementation, strings

Choosing Laptop

brute force, implementation

Card Game

implementation

Blackjack

implementation

Sum of Digits

implementation

Help Far Away Kingdom

strings