Vanya and Brackets

brute force, dp, expression parsing, greedy, implementation, strings

Tesla

constructive algorithms, implementation

Vasya's Function

binary search, implementation, math

Follow Traffic Rules

implementation, math

Cubes

games, greedy, implementation

Nastya and a Game

brute force, implementation, math

Chris and Road

geometry, implementation

Full Binary Tree Queries

brute force, implementation, trees

Colorful Points

data structures, greedy, implementation

GukiZ and Binary Operations

combinatorics, implementation, math, matrices, number theory

Is It Flower?

dfs and similar, graphs, implementation

Destroy it!

dp, implementation, sortings

Characteristics of Rectangles

binary search, bitmasks, brute force, implementation, sortings

Transitive Graph

dfs and similar, dp, dsu, graphs, implementation

National Property

2-sat, dfs and similar, graphs, implementation

Arpa and a list of numbers

implementation, number theory

Messenger

data structures, hashing, implementation, string suffix structures, strings

Infinite Inversions

binary search, data structures, implementation, sortings, trees

Lengthening Sticks

combinatorics, implementation, math

Spaceship Solitaire

data structures, greedy, implementation

Array and Segments (Hard version)

data structures, implementation

Staircases

brute force, combinatorics, data structures, dfs and similar, dp, implementation, math

Candy Party (Hard Version)

bitmasks, constructive algorithms, dp, greedy, implementation, math

Treasure Hunting

binary search, dp, greedy, implementation

Space Harbour

data structures, implementation, math, sortings

Red-Black Number

dfs and similar, dp, implementation, math, meet-in-the-middle

Rain

binary search, brute force, data structures, geometry, greedy, implementation, math

Sum over all Substrings (Hard Version)

bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings

Grime Zoo

brute force, greedy, implementation, strings

Sheikh (Hard Version)

binary search, bitmasks, brute force, greedy, implementation, two pointers

String

brute force, constructive algorithms, hashing, implementation, string suffix structures, strings

Learning to Paint

binary search, data structures, dfs and similar, dp, greedy, implementation, sortings

Unstable String Sort

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

You Are Given a WASD-string...

brute force, data structures, dp, greedy, implementation, math, strings

Editor

data structures, implementation

Promising String (hard version)

data structures, implementation, math, strings

Clique Partition

brute force, constructive algorithms, graphs, greedy, implementation

Domino (hard version)

constructive algorithms, implementation, math

Portals

data structures, dp, greedy, implementation, sortings

Red-Blue Operations (Easy Version)

binary search, greedy, implementation, math

Funny Substrings

data structures, hashing, implementation, matrices, strings

Treelabeling

bitmasks, constructive algorithms, dfs and similar, games, greedy, implementation, trees

The Human Equation

greedy, implementation

Decryption

constructive algorithms, implementation, math, number theory

Best Pair

binary search, brute force, implementation

Challenges in school №41

brute force, constructive algorithms, games, graphs, greedy, implementation, sortings

Rarity and New Dress

dfs and similar, dp, implementation, shortest paths

Guess The Maximums

binary search, implementation, interactive, math

Painting the Array II

constructive algorithms, data structures, dp, greedy, implementation

Ehab's Last Corollary

constructive algorithms, dfs and similar, graphs, greedy, implementation, trees

Segment Intersections

brute force, greedy, implementation, math

Trash Problem

data structures, implementation

Swaps Again

constructive algorithms, implementation, sortings

Pokémon Army (hard version)

data structures, divide and conquer, dp, greedy, implementation

GCD of an Array

brute force, data structures, hashing, implementation, math, number theory, sortings, two pointers

Remainder Problem

brute force, data structures, implementation

Mirror Box

geometry, implementation

Game

implementation

Collisions

brute force, implementation, math

Team Arrangement

constructive algorithms, greedy, implementation

Harvester

implementation

Vectors

implementation, math

Sweets Game

bitmasks, dfs and similar, dp, games, implementation

Crossword

implementation

Parquet

combinatorics, constructive algorithms, greedy, implementation

Letter A

geometry, implementation

Log Stream Analysis

binary search, brute force, implementation, strings

Chocolate

dfs and similar, implementation

Nanami's Digital Board

dsu, implementation

Journey

brute force, constructive algorithms, implementation

A Piece of Cake

*special problem, implementation

Circle of Numbers

brute force, dfs and similar, implementation

Numbers

constructive algorithms, implementation

Last Chance

data structures, implementation, strings

Sofa Thief

brute force, implementation

Intersection

implementation, math

Police Patrol

greedy, implementation, math, ternary search

Olya and magical square

constructive algorithms, implementation, math

Ants

brute force, implementation

Restoring Increasing Sequence

binary search, brute force, greedy, implementation

International Olympiad

constructive algorithms, greedy, implementation, math

Restoration of string

constructive algorithms, graphs, implementation

Big Maximum Sum

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

Mike and Geometry Problem

combinatorics, data structures, dp, geometry, implementation

Theseus and labyrinth

graphs, implementation, shortest paths

Twisted Circuit

*special problem, brute force, implementation

Dima and Containers

constructive algorithms, greedy, implementation

Sums of Digits

dp, greedy, implementation

Microtransactions (hard version)

binary search, greedy, implementation

PLEASE

combinatorics, dp, implementation, math, matrices

Copy of a Copy of a Copy

constructive algorithms, dfs and similar, graphs, implementation, sortings

The World Is Just a Programming Task (Easy Version)

brute force, dp, greedy, implementation

Candy Box (hard version)

greedy, implementation, sortings

TV Shows

data structures, greedy, implementation, sortings

Mars rover

dfs and similar, graphs, implementation, trees

Polycarp and Snakes

brute force, implementation

Freedom of Choice

brute force, greedy, implementation

Stack Sorting

constructive algorithms, data structures, greedy, implementation

Pinball

binary search, data structures, implementation, math, two pointers

Fibonacci-ish

brute force, dp, hashing, implementation, math