Dancing Lessons

data structures

School

dp, dsu

Codecraft III

implementation

Triminoes

constructive algorithms, greedy

Toys

brute force, combinatorics

Phone Number

dp

Shooting Gallery

data structures, implementation

BerPaint

geometry, graphs

Anfisa the Monkey

dp

Hyperdrive

math

Holidays

implementation

Cola

implementation

Indian Summer

implementation

Race

brute force, implementation, two pointers

Journey

brute force, constructive algorithms, implementation

Lucky Tickets

greedy

Letter

implementation, strings

Football

strings

Baldman and the military

dfs and similar, graphs, trees

Strange town

constructive algorithms, math

Safe cracking

brute force, constructive algorithms

Game of chess unfinished

implementation

Guilty --- to the kitchen!

greedy, implementation

3-cycles

constructive algorithms, graphs, greedy

Pawn

dp

Email address

expression parsing, implementation

Martian Dollar

brute force

Translation

implementation, strings

Number Table

combinatorics

Interesting Sequence

math

Berland Square

implementation, math

Repaintings

math

Find Color

constructive algorithms, geometry, implementation, math

Testing

Spelling Check

hashing, implementation, strings

Tram

Multiplication Table

implementation

Inverse Function

implementation

Pacifist frogs

implementation

What Has Dirichlet Got to Do with That?

dp, games

Cubical Planet

math

Moon Craters

dp, sortings

Company Income Growth

greedy

C*++ Calculations

expression parsing, greedy

The Great Marathon

dp

Queue

data structures

Smart Boy

dp, games, strings

Let's Go Rolling!

dp, sortings

Vasya the Architect

implementation

Blinds

brute force

Chess

brute force, implementation, math

Army

implementation

Trial for Chief

graphs, greedy, shortest paths

Lesson Timetable

combinatorics, dp, math

Old Berland Language

data structures, greedy, trees

Computer Game

greedy, implementation

Towers

sortings

Two Paths

constructive algorithms, dsu, graphs, implementation

New Game with a Chess Piece

games

Bowls

geometry, implementation

Fractal

implementation

Extra-terrestrial Intelligence

implementation

Parade

data structures, sortings

Animals

dp, greedy

Fire Again

brute force, dfs and similar, shortest paths

Warehouse

implementation

Shell Game

implementation

Collisions

brute force, implementation, math

Road Map

dfs and similar, graphs

Page Numbers

expression parsing, implementation, sortings, strings

Sale

greedy, sortings

Reconnaissance 2

implementation

Helper

Knights

geometry, graphs, shortest paths, sortings

Wonderful Randomized Sum

greedy

String Problem

shortest paths

What is for dinner?

greedy, implementation

Hide-and-Seek

geometry, implementation

Constellation

implementation

Flea

math

Borze

expression parsing, implementation

Reconnaissance

brute force

TV Game

dp

Chocolate

dfs and similar, implementation

Schedule

implementation

Sysadmin Bob

greedy, implementation, strings

Worms Evolution

implementation

Tricky and Clever Password

binary search, constructive algorithms, data structures, greedy, hashing, strings

King's Problem?

geometry, greedy

Shooting Gallery

dp, probabilities

Codeforces World Finals

implementation

Accounting

brute force, math

Quarrel

graphs, shortest paths

Ant on the Tree

constructive algorithms, dfs and similar, trees

Mail Stamps

data structures, dfs and similar, graphs, implementation

Traffic Lights

implementation

Spit Problem

brute force

DravDe saves the world

geometry, math

Don't fear, DravDe is kind

binary search, data structures, dp, hashing

Bath Queue

combinatorics, dp, probabilities