Again Twenty Five!

number theory

Far Relative’s Birthday Cake

brute force, combinatorics, constructive algorithms, implementation

Save Luke

math

Professor GukiZ's Robot

implementation, math

Slime Combining

implementation

Elephant

math

Bulbs

implementation

USB Flash Drives

greedy, implementation, sortings

Patrick and Shopping

implementation

Vitaly and Night

constructive algorithms, implementation

Vasya the Hipster

implementation, math

GukiZ and Contest

brute force, implementation, sortings

Soldier and Bananas

brute force, implementation, math

Combination Lock

implementation

Pangram

implementation, strings

Game

constructive algorithms, math

Fox And Snake

implementation

Maximum in Table

brute force, implementation

Vanya and Cubes

implementation

Team Olympiad

greedy, implementation, sortings

Calculating Function

implementation, math

Design Tutorial: Learn from Math

math, number theory

I Wanna Be the Guy

greedy, implementation

George and Accommodation

implementation

Little Pony and Crystal Mine

implementation

Rewards

implementation

DZY Loves Hash

implementation

Anton and Letters

constructive algorithms, implementation

Forgotten Episode

implementation

Choosing Teams

greedy, implementation, sortings

Black Square

implementation

Police Recruits

implementation

Sereja and Mugs

implementation

Pasha and Hamsters

constructive algorithms, implementation

Password Check

*special problem, implementation

Vanya and Cards

implementation, math

Second-Price Auction

implementation

Coder

implementation

Sereja and Dima

greedy, implementation, two pointers

Playing with Dice

brute force

Soroban

implementation

Levko and Table

constructive algorithms, implementation

Magnets

implementation

Helpful Maths

greedy, implementation, sortings, strings

Cakeminator

brute force, implementation

Candies

implementation

Eugeny and Array

implementation

Shaass and Oskols

implementation, math

Spyke Talks

*special problem, implementation, sortings

Bit++

implementation

Word Capitalization

implementation, strings

Circle Line

implementation

Beautiful Year

brute force

Games

brute force

Queue at the School

constructive algorithms, graph matchings, implementation, shortest paths

Stones on the Table

implementation

Colorful Stones (Simplified Edition)

implementation

Beautiful Matrix

implementation

Roma and Lucky Numbers

implementation

Greg's Workout

implementation

Cupboards

implementation

System Administrator

implementation

Boy or Girl

brute force, implementation, strings

Perfect Permutation

implementation, math

Team

brute force, greedy

Is your horseshoe on the other hoof?

implementation

System of Equations

brute force

LLPS

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

Drinks

implementation, math

Series of Crimes

brute force, geometry, implementation

Good Matrix Elements

implementation

Good Matrix Elements

implementation

Phone Code

*special problem, brute force, implementation

Chores

sortings

Next Round

*special problem, implementation

Game Outcome

brute force

I_love_\%username\%

brute force

Soft Drinking

implementation, math

Insomnia cure

constructive algorithms, implementation, math

Lucky Ticket

implementation

Arrival of the General

implementation

Amusing Joke

implementation, sortings, strings

Presents

implementation

Epic Game

implementation

Tram

implementation

Petya and Strings

implementation, strings

Nearly Lucky Number

implementation

Blackjack

implementation

Help Far Away Kingdom

strings

Chips

implementation, math

Panoramix's Prediction

brute force

Haiku

implementation, strings

Way Too Long Words

strings

Ultra-Fast Mathematician

implementation

Word

implementation, strings

Domino piling

greedy, math

Sleuth

implementation

Triangular numbers

brute force, math

Ball Game

brute force, implementation

Translation

implementation, strings