Magic Trick II

constructive algorithms, implementation, 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

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

Game with Marbles (Easy Version)

brute force, games, greedy, sortings

Three Activities

brute force, dp, greedy, implementation, sortings

Accumulator Apex

data structures, implementation, sortings

Heavy Intervals

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

Shift and Reverse

greedy, sortings

Maximize The Value

data structures, sortings

Set To Max (Hard Version)

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

Array Game

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

Collecting Game

binary search, dp, greedy, sortings, two pointers

Halloumi Boxes

brute force, greedy, sortings

Compressed Tree

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

Unusual Entertainment

data structures, dfs and similar, dsu, shortest paths, sortings, trees, two pointers

Queue Sort

greedy, implementation, sortings

Sofia and Strings

data structures, greedy, sortings, strings, two pointers

Pepe Racing

constructive algorithms, implementation, interactive, sortings

Permutation Sorting

data structures, sortings

Matching Arrays

binary search, constructive algorithms, greedy, sortings

Jagged Swaps

sortings

Infinite Card Game

binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers

Points and Minimum Distance

greedy, math, sortings

Neutral Tonality

constructive algorithms, greedy, sortings, two pointers

Brukhovich and Exams

brute force, greedy, implementation, math, sortings

Smilo and Monsters

binary search, constructive algorithms, greedy, sortings, two pointers

Deja Vu

brute force, math, sortings

Sorting with Twos

constructive algorithms, sortings

Doremy's Drying Plan (Easy Version)

brute force, data structures, dp, greedy, sortings

Doremy's Connecting Plan

constructive algorithms, greedy, math, sortings

I Wanna be the Team Leader

bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers

Medium Design

brute force, data structures, dp, greedy, sortings

Dances (Hard Version)

binary search, greedy, sortings, two pointers

Autosynthesis

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

Effects of Anti Pimples

combinatorics, number theory, sortings

Helmets in Night Light

greedy, sortings

Building an Aquarium

binary search, sortings

Prefix Purchase

greedy, implementation, sortings

2D Traveling

geometry, math, shortest paths, sortings

green_gold_dog, array and permutation

constructive algorithms, sortings

Freak Joker Process

binary search, data structures, sortings

Exotic Queries

data structures, implementation, sortings

Guess Game

bitmasks, data structures, games, math, probabilities, sortings, strings, trees