Euclidean Distance

*special problem

Battleship

*special problem, dfs and similar, implementation

The Beaver's Problem - 3

The Beaver's Problem - 3

Jumping frogs

*special problem

Game with Two Trees

Автобус

binary search, data structures, greedy, sortings

Points in triangle

*special problem, geometry

Triskaidekaphobia

*special problem

Maximal Difference

*special problem

Number Deletion Game

*special problem, dp, games, greedy

Levenshtein distance

*special problem

The Beaver's Problem - 3

Neural Network Problem

*special problem, binary search, greedy

Road Problem

graphs

Maximum Sum Subarrays

*special problem, dp

Significant Cups

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

Magic Squares

Amusement Park

*special problem, ternary search

Pixels

constructive algorithms, math

Segments

data structures

Zigzag

data structures

Property

greedy, sortings

Smart Boy

dp, games, strings

Cowboys

combinatorics, dp, math

Arithmancy (Easy)

brute force, constructive algorithms, interactive, strings

Game with Points

dp, graphs, implementation, shortest paths

Optimizer

data structures, greedy, sortings

Marmots (easy)

math

White, Black and White Again

combinatorics, number theory

Piet

implementation

Crosses

brute force, implementation

Dormitory

dp, implementation

Exact Neighbours (Medium)

constructive algorithms

Xenia and Dominoes

bitmasks, dfs and similar, dp

The Wall (hard)

dp

Mice

greedy, two pointers

Context Advertising

dp, two pointers

Writing a Song

brute force, dp, strings

More Reclamation

games

New York Hotel

greedy, math

Conveyor

sortings, two pointers

Periodical Numbers

combinatorics, dp, number theory

Mushroom Strife

brute force, dfs and similar

Ivan the Fool VS Gorynych the Dragon

dp, games, graphs

Moon Craters

dp, sortings

The Light Square

2-sat, dfs and similar, greedy

Send the Fool Further! (medium)

dp, trees

Bombing

binary search, dp, probabilities

Constants in the language of Shakespeare

constructive algorithms, dp, greedy

Broken Monitor

brute force, constructive algorithms, greedy, implementation

Polycarp's Picture Gallery

constructive algorithms, greedy

Count BFS Graph

combinatorics, dp

Graph

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

Diverging Directions

data structures, dfs and similar, trees

Parade

data structures, sortings

Chicken or Fish?

greedy

Quest

dp, greedy

Harry Potter and the Golden Snitch

binary search, geometry

Kamal-ol-molk's Painting

brute force, constructive algorithms, greedy

Unsolvable

math, number theory

Casinos and travel

dp

Space Rescuers

geometry, ternary search

Berland Elections

greedy, sortings

Blackboard Fibonacci

brute force, math

Third Month Insanity

dp, probabilities, trees

Elections

brute force

Fools and Foolproof Roads

data structures, dfs and similar, dsu, graphs, greedy

Daleks' Invasion (medium)

dfs and similar, graphs, shortest paths, trees

Hostname Aliases

*special problem, binary search, data structures, implementation, sortings, strings

Little Elephant and Shifts

data structures

Inna and Binary Logic

binary search, bitmasks, data structures

Vasily the Bear and Beautiful Strings

combinatorics, math, number theory

Blueprint for Seating

combinatorics, divide and conquer, math

Heidi Learns Hashing (Medium)

brute force, number theory

Field Photography

bitmasks, data structures, sortings

Maximize The Value

data structures, sortings

Rosetta Problem

*special problem

Social Network

greedy, two pointers

The table

constructive algorithms, greedy

Chessboard Billiard

dfs and similar, dsu, graphs, number theory

Exploration plan

binary search, flows, graph matchings, shortest paths

Hexagons

binary search, implementation, math

Playlist

math, probabilities, sortings

Beavermuncher-0xFF

dfs and similar, dp, dsu, greedy, trees

Runner's Problem

dp, matrices, sortings

Bulbo

dp, greedy

Bulmart

binary search, dfs and similar

Hidden Fortress

interactive, math

World Eater Brothers

dfs and similar, dp, greedy, trees

Maximum Questions

data structures, dp, strings

Area of a Star

geometry

Valera and Swaps

constructive algorithms, dsu, graphs, implementation, math, string suffix structures

±1

2-sat, dfs and similar, graphs

Frog Jumping

dfs and similar, math, number theory

String Mark

combinatorics, math, strings

There and Back Again

Start of the session

constructive algorithms

Getting Deals Done

binary search, data structures

Optimal Polygon Perimeter

dp, geometry