Alternative Platforms

combinatorics, data structures, fft, math, sortings

DIY

data structures, geometry, greedy, sortings

Ardent Flames

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

Startup

greedy, sortings

Trinity

binary search, math, sortings, two pointers

Penchick and Chloe's Trees

data structures, dfs and similar, dp, greedy, implementation, math, sortings, trees

Penchick and Satay Sticks

brute force, greedy, sortings

QED's Favorite Permutation

data structures, implementation, sortings

A Gift From Orangutan

constructive algorithms, greedy, math, sortings

New Game

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

Buying Lemonade

binary search, constructive algorithms, sortings

Concatenation of Arrays

constructive algorithms, greedy, math, sortings

Adjust The Presentation (Hard Version)

constructive algorithms, data structures, greedy, implementation, sortings

Meaning Mean

data structures, greedy, math, sortings

Complex Segments (Hard Version)

binary search, data structures, divide and conquer, dsu, greedy, math, sortings

Complex Segments (Easy Version)

binary search, data structures, divide and conquer, dsu, greedy, math, sortings

Max Plus Min Plus Size

data structures, dp, dsu, greedy, implementation, matrices, sortings

Tree Pruning

brute force, dfs and similar, greedy, sortings, trees

Robert Hood and Mrs Hood

brute force, data structures, greedy, sortings

The Strict Teacher (Hard Version)

binary search, greedy, math, sortings

The Strict Teacher (Easy Version)

greedy, math, sortings

Splitting Items

games, greedy, sortings

Turtle and Good Pairs

constructive algorithms, greedy, sortings, strings

Turtle and Piggy Are Playing a Game 2

games, greedy, sortings

Sort

dp, greedy, sortings, strings

Bouquet (Hard Version)

binary search, data structures, greedy, math, sortings, two pointers

Bouquet (Easy Version)

binary search, brute force, greedy, sortings, two pointers

Angry Monk

greedy, math, sortings

Only Pluses

brute force, constructive algorithms, greedy, math, sortings

Triangle Formation

brute force, greedy, implementation, math, sortings

Submission Bait

brute force, games, greedy, sortings

Smithing Skill

brute force, data structures, dp, greedy, math, sortings, two pointers

Beautiful Array

greedy, math, number theory, sortings

Update Queries

data structures, greedy, sortings

Matrix Stabilization

brute force, data structures, greedy, sortings

X Axis

brute force, geometry, math, sortings

Magic Trick II

constructive algorithms, implementation, sortings

Swap Dilemma

constructive algorithms, data structures, divide and conquer, greedy, math, sortings

Sorting Problem Again

binary search, data structures, sortings

Soccer

greedy, implementation, math, sortings

Field Division (hard version)

math, sortings

Field Division (easy version)

data structures, math, sortings

Permutation of Rows and Columns

constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings

Choosing Cubes

sortings, sortings

Alice and Books

constructive algorithms, greedy, sortings

Nikita and LCM

brute force, data structures, dp, greedy, math, number theory, sortings

Remove Bridges

data structures, dfs and similar, dp, greedy, sortings, trees

Verify Password

implementation, sortings, strings

378QAQ and Mocha's Array

brute force, greedy, math, sortings

Bazoka and Mocha's Array

brute force, greedy, implementation, sortings

Money Buys Less Happiness Now

data structures, greedy, sortings

Cutting Game

binary search, brute force, data structures, implementation, sortings, two pointers

Symmetric Encoding

implementation, sortings, strings

Cat, Fox and Swaps

graphs, math, sortings

Cat, Fox and Double Maximum

constructive algorithms, greedy, implementation, math, sortings

XOUR

data structures, dsu, sortings

Find the Car

binary search, math, sortings

Binary Cut

dp, greedy, implementation, sortings, strings

My First Sorting Problem

implementation, sortings

Balanced Shuffle (Easy)

implementation, sortings

Shop Game

data structures, greedy, math, sortings

Permutation Counting

binary search, greedy, implementation, math, sortings

Everything Nim

games, greedy, math, sortings

Nene and the Passing Game

constructive algorithms, data structures, dsu, graphs, sortings

Long Inversions

brute force, greedy, implementation, sortings

Progressive Square

constructive algorithms, data structures, implementation, sortings

Colored Balls

combinatorics, dp, math, sortings

Help, what does it mean to be "Based"

brute force, constructive algorithms, expression parsing, implementation, sortings

Ticket Hoarding

greedy, math, sortings

Dating

greedy, sortings, trees

Charming Meals

binary search, brute force, greedy, sortings

Median of an Array

greedy, implementation, sortings

Kirill and Mushrooms

data structures, sortings

Learning to Paint

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

Rudolf and Imbalance

binary search, greedy, sortings, two pointers

Almost Certainly

*special problem, constructive algorithms, data structures, sortings

Burenka and Pether

*special problem, data structures, dfs and similar, divide and conquer, dsu, graphs, sortings, trees

Three Arrays

*special problem, constructive algorithms, implementation, sortings

Pokémon Arena

data structures, graphs, greedy, implementation, shortest paths, sortings

Messenger in MAC

binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings

Turtle Tenacity: Continual Mods

constructive algorithms, greedy, math, number theory, sortings

Turtle Puzzle: Rearrange and Negate

greedy, math, sortings

Feed Cats

data structures, dp, sortings

Anna and the Valentine's Day Gift

games, greedy, math, sortings

Lexicographically Largest

binary search, constructive algorithms, data structures, greedy, sortings

Maximise The Score

greedy, sortings

Sasha and the Beautiful Array

constructive algorithms, greedy, math, sortings

Equalize

binary search, greedy, sortings, two pointers

Microcycle

data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees

Space Harbour

data structures, implementation, math, sortings

Forming Triangles

combinatorics, constructive algorithms, math, sortings

Very Different Array

data structures, greedy, sortings, two pointers

Summation Game

games, greedy, math, sortings

01 Tree

constructive algorithms, data structures, dsu, greedy, sortings, trees

Caterpillar on a Tree

dfs and similar, graphs, greedy, implementation, sortings, trees

ace5 and Task Order

constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings

Minimize Inversions

constructive algorithms, data structures, greedy, implementation, sortings

Bicycles

graphs, greedy, implementation, shortest paths, sortings

Greetings

data structures, divide and conquer, sortings

Game with Marbles (Hard Version)

games, greedy, sortings