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

pSort

dfs and similar, dsu, graphs

Bender Problem

implementation

Number With The Given Amount Of Divisors

brute force, dp, number theory

Ring Road 2

2-sat, dfs and similar, dsu, graphs

Unordered Subsequence

constructive algorithms, greedy

Tournament

bitmasks, brute force, dfs and similar, greedy

Next Test

implementation, sortings

Multithreading

constructive algorithms

Tickets

combinatorics, math, probabilities

Parquet

combinatorics, constructive algorithms, greedy, implementation

Regular Bracket Sequence

greedy

Almost Prime

number theory

Test

hashing, strings

Roads not only in Berland

dsu, graphs, trees

Roads in Berland

graphs, shortest paths

Phone numbers

implementation

IQ test

brute force

Berland collider

binary search

Broken robot

dp, math, probabilities

Sequence of points

geometry, implementation, math

F1 Champions

implementation

Ring road

graphs

Tree

dp

Tetragon

geometry, math

Oranges and Apples

constructive algorithms, sortings

Party

constructive algorithms, graphs, math

You're Given a String...

brute force, greedy

Scheme

dfs and similar, graphs, trees