Hobbits' Party

constructive algorithms, greedy

Brackets

combinatorics, dp, greedy

Luck is in Numbers

greedy

Spiders

dp, greedy, trees

Fancy Number

brute force, greedy, sortings, strings

Little Pigs and Wolves

greedy, implementation

Lawnmower

greedy, sortings

Petya and Inequiations

greedy

Russian Roulette

constructive algorithms, greedy

Testing Pants for Sadness

greedy, implementation, math

Castle

dp, greedy, probabilities, sortings, trees

Homework

greedy

Interval Coloring

*special problem, greedy, math

Lucky Numbers

dp, greedy

End of Exams

greedy

Binary Number

greedy

Grocer's Problem

constructive algorithms, graphs, greedy

Newspaper Headline

greedy, strings

Cableway

greedy, math

Fire and Ice

greedy

Robbery

greedy

Tetris revisited

constructive algorithms, graph matchings, greedy, math

Embassy Queue

data structures, greedy

Track

graphs, greedy, shortest paths

Polycarp's Picture Gallery

constructive algorithms, greedy

Average Score

greedy, math, sortings

Beaver

data structures, dp, greedy, hashing, strings, two pointers

Bus Game

greedy

Beavermuncher-0xFF

dfs and similar, dp, dsu, greedy, trees

Plus and xor

dp, greedy, math

Mice

greedy, two pointers

Big Maximum Sum

data structures, dp, greedy, implementation, math, trees

Train

dp, games, greedy

FreeDiv

dfs and similar, graphs, greedy

Need For Brake

binary search, greedy, sortings

The Elder Trolls IV: Oblivon

greedy, math

Oil

*special problem, greedy, math

Goshtasp, Vishtasp and Eidi

*special problem, greedy, math

Text Messaging

expression parsing, greedy, strings

Bets

greedy, implementation

Restoration of the Permutation

greedy

Partial Teacher

dp, graphs, greedy, implementation

Harry Potter and the History of Magic

brute force, greedy, implementation

Presents

*special problem, greedy

Table

*special problem, greedy, implementation, math

A Student's Dream

greedy, math

Eternal Victory

dfs and similar, graphs, greedy, shortest paths, trees

Team Arrangement

constructive algorithms, greedy, implementation

Calendar

greedy, strings

Coins

greedy

Chat room

greedy, strings

Square Earth?

dfs and similar, greedy, implementation

Three Base Stations

binary search, greedy

Domino piling

greedy, math

Snow sellers

greedy, sortings

Permutations

greedy

TCMCF+++

greedy

Goats and Wolves

greedy

Director

constructive algorithms, greedy

Event Dates

greedy, meet-in-the-middle, sortings

Triminoes

constructive algorithms, greedy

Lucky Tickets

greedy

Guilty --- to the kitchen!

greedy, implementation

3-cycles

constructive algorithms, graphs, greedy

Company Income Growth

greedy

C*++ Calculations

expression parsing, greedy

Trial for Chief

graphs, greedy, shortest paths

Old Berland Language

data structures, greedy, trees

Computer Game

greedy, implementation

Animals

dp, greedy

Sale

greedy, sortings

Wonderful Randomized Sum

greedy

What is for dinner?

greedy, implementation

Sysadmin Bob

greedy, implementation, strings

Tricky and Clever Password

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

King's Problem?

geometry, greedy

Unordered Subsequence

constructive algorithms, greedy

Tournament

bitmasks, brute force, dfs and similar, greedy

Parquet

combinatorics, constructive algorithms, greedy, implementation

Regular Bracket Sequence

greedy

You're Given a String...

brute force, greedy

Segments

greedy, sortings

Deletion of Repeats

greedy, hashing, string suffix structures

Seller Bob

brute force, dp, greedy

Hierarchy

dfs and similar, dsu, greedy, shortest paths

Burglar and Matches

greedy, implementation, sortings

Fruits

greedy, implementation, sortings

Forward, march!

binary search, dp, greedy

Alice, Bob and Chocolate

greedy, two pointers

Longest Regular Bracket Sequence

constructive algorithms, data structures, dp, greedy, sortings, strings

Before an Exam

constructive algorithms, greedy

Least Cost Bracket Sequence

greedy

Lorry

greedy, sortings

Shortest path of the king

greedy, shortest paths