Broken Monitor

brute force, constructive algorithms, greedy, implementation

Crossword

implementation

Present to Mom

binary search, two pointers

Merging Two Decks

constructive algorithms, greedy

Diverse Substrings

dp, strings, two pointers

Bombing

binary search, dp, probabilities

Conveyor

sortings, two pointers

Team Arrangement

constructive algorithms, greedy, implementation

Game

implementation

Cheese Board

Collisions

brute force, implementation, math

Send the Fool Further! (medium)

dp, trees

Martian Luck

math, number theory

Mushroom Strife

brute force, dfs and similar

T-decomposition

dfs and similar, graphs, greedy, trees

Graph

*special problem, binary search, dfs and similar, dp, math, ternary search

Dominoes

dfs and similar, graphs

More Reclamation

games

Harvester

implementation

Mirror Box

geometry, implementation

The Light Square

2-sat, dfs and similar, greedy

Moon Craters

dp, sortings

Triminoes

constructive algorithms, greedy

Director

constructive algorithms, greedy

Crosses

brute force, implementation

Periodical Numbers

combinatorics, dp, number theory

Need For Brake

binary search, greedy, sortings

Piet

implementation

Xenia and Dominoes

bitmasks, dfs and similar, dp

Ivan the Fool VS Gorynych the Dragon

dp, games, graphs

Morning run

binary search, math, two pointers

The Wall (hard)

dp

Fractal Detector

dp, hashing

New York Hotel

greedy, math

Playing with Superglue

combinatorics, constructive algorithms

Dormitory

dp, implementation

Mice

greedy, two pointers

Diverging Directions

data structures, dfs and similar, trees

Ancient Berland Hieroglyphs

two pointers

Context Advertising

dp, two pointers

Mad Joe

brute force

Optimizer

data structures, greedy, sortings

Marmots (easy)

math

Zigzag

data structures

Writing a Song

brute force, dp, strings

White, Black and White Again

combinatorics, number theory

Cowboys

combinatorics, dp, math

Game with Points

dp, graphs, implementation, shortest paths

Stepan's Series

*special problem, dp

Smart Boy

dp, games, strings

Pixels

constructive algorithms, math

Property

greedy, sortings

Amusement Park

*special problem, ternary search

Smart Beaver and Resolving Collisions

Bars

*special problem, binary search

Segments

data structures

Magic Squares

The Beaver's Problem - 2

Dune II: Battle For Arrakis

*special problem, data structures, greedy, math

Chess Match

*special problem

Significant Cups

*special problem, binary search, data structures, two pointers

Beaver's Calculator 1.0

greedy

Teams

*special problem, binary search, greedy, math

Double Permutation Inc.

*special problem, binary search, greedy

Domain

*special problem, expression parsing

Neural Network Problem

*special problem, binary search, greedy

Road Problem

graphs

Mobile Communications

Array Sum

*special problem

Maximal Difference

*special problem

Points in triangle

*special problem, geometry

Triskaidekaphobia

*special problem

Number Deletion Game

*special problem, dp, games, greedy

Counting Fridays

*special problem

Jumping frogs

*special problem

Levenshtein distance

*special problem

The Beaver's Problem - 3

Divisibility Check

*special problem

Date Change

*special problem

The Beaver's Problem - 3

Truncatable primes

*special problem

Battleship

*special problem, dfs and similar, implementation

Euclidean Distance

*special problem

Game with Two Trees

The Beaver's Problem - 3

The Beaver's Problem - 3

The Beaver's Problem - 3

Non-decimal sum

*special problem