Robot Queries

binary search, data structures, dp, implementation

Landscaping

binary search, geometry, two pointers

Compressed Tree

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

Yet Another Monster Fight

binary search, dp, greedy, implementation, math

Local Deletions

binary search, data structures, implementation

Transitive Graph

dfs and similar, dp, dsu, graphs, implementation

Small GCD

bitmasks, brute force, dp, math, number theory

Unusual Entertainment

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

Alex's whims

constructive algorithms, graphs, greedy, shortest paths, trees

Vova Escapes the Matrix

brute force, dfs and similar, divide and conquer, shortest paths

Sofia and Strings

data structures, greedy, sortings, strings, two pointers

Absolute Beauty

greedy, math

Colorful Grid

constructive algorithms

Cyclic Hamming (Hard Version)

brute force, dp, fft, math, number theory

Cyclic Hamming (Easy Version)

brute force, divide and conquer, dp, fft, math, number theory

Pepe Racing

constructive algorithms, implementation, interactive, sortings

Bracket Xoring

constructive algorithms, greedy, implementation, math

Permutation Sorting

data structures, sortings

Ones and Twos

binary search, data structures, divide and conquer, math, two pointers

Two Characters, Two Colors

binary search, data structures, dp, flows, greedy

Fancy Arrays

combinatorics, dp, math, matrices

Infinite Card Game

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

XOR Construction

bitmasks, constructive algorithms, data structures, math, string suffix structures, trees

Cacti Symphony

combinatorics, dfs and similar, dp, graphs

Colorful Constructive

constructive algorithms, data structures, greedy

Freedom of Choice

brute force, greedy, implementation

Neutral Tonality

constructive algorithms, greedy, sortings, two pointers

A Growing Tree

data structures, dfs and similar, trees

Brukhovich and Exams

brute force, greedy, implementation, math, sortings

Suspicious logarithms

binary search, brute force, math

Doremy's Average Tree

data structures, dp, greedy, trees

Doremy's Swapping Trees

dfs and similar, graphs, trees

Game of Stacks

brute force, dfs and similar, graphs, implementation, trees

Doremy's Drying Plan (Hard Version)

data structures, dp

Doremy's Drying Plan (Easy Version)

brute force, data structures, dp, greedy, sortings

Doremy's Connecting Plan

constructive algorithms, greedy, math, sortings

Minimum Segments

constructive algorithms

Good Colorings

binary search, constructive algorithms, graphs, interactive

Split

binary search, data structures, divide and conquer, dsu, math, trees, two pointers

Minimum Array

binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers

Time Travel

binary search, graphs, shortest paths

Diamond Theft

data structures, greedy

I Wanna be the Team Leader

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

Monocarp and the Set

combinatorics, data structures, math

Decreasing String

implementation, strings

Hard Design

greedy, implementation, math

Counting Rhyme

dp, math, number theory

Medium Design

brute force, data structures, dp, greedy, sortings

Dances (Hard Version)

binary search, greedy, sortings, two pointers

Look Back

bitmasks, greedy

Two Permutations (Hard Version)

constructive algorithms

Two Permutations (Easy Version)

brute force, constructive algorithms, greedy, number theory

Tree XOR

bitmasks, dfs and similar, dp, greedy, trees

Anya and the Mysterious String

binary search, data structures

Minimum Maximum Distance

dfs and similar, dp, graphs, shortest paths, trees

Last Man Standing

brute force, data structures, number theory

Interactive Game with Coloring

brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees

Sum of XOR Functions

bitmasks, combinatorics, divide and conquer, dp, math

wxhtzdy ORO Tree

binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees

Vasilije Loves Number Theory

brute force, math, number theory

Reverse Madness

data structures, greedy

Clubstep

binary search, brute force, data structures, greedy, trees

Indefinite Clownfish

binary search, graphs

Ball-Stackable

constructive algorithms, data structures, dp, trees

Lexichromatography

combinatorics, dfs and similar, dsu, graphs, two pointers

Autosynthesis

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

Jellyfish and Mex

dp

Jellyfish and Inscryption

dp

Jellyfish and OEIS

dp

Jellyfish and Hack

dp, math

Jellyfish and Miku

divide and conquer, dp, math, probabilities

Jellyfish and EVA

dp, graphs, greedy, math, probabilities

Jellyfish and Math

bitmasks, brute force, dfs and similar, dp, graphs, shortest paths

Mad City

dfs and similar, dsu, games, graphs, shortest paths, trees

Replace With Product

brute force, greedy, math

Selling a Menagerie

dfs and similar, dsu, graphs, implementation, math

Standard Graph Problem

data structures, graphs, greedy, trees

MEXanization

data structures

Lazy Numbers

binary search, math

Another MEX Problem

bitmasks, brute force, dp, shortest paths

Prefix Purchase

greedy, implementation, sortings

LIS?

data structures, greedy, implementation

Min-Sum-Max

constructive algorithms, dp, greedy

Flower-like Pseudotree

constructive algorithms, graphs, greedy, implementation, trees

Travel Plan

combinatorics, dp, implementation, math, trees

Candy Party (Hard Version)

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

Candy Party (Easy Version)

bitmasks, constructive algorithms, graphs, greedy, implementation, math

Most Different Tree

brute force, constructive algorithms, dfs and similar, greedy, hashing

Salyg1n and Array (hard version)

constructive algorithms, interactive

Salyg1n and Array (simple version)

constructive algorithms, interactive, math

Cyclic Operations

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation

Mighty Rock Tower

brute force, combinatorics, dp, math, probabilities

Lihmuf Balling

binary search, brute force, math

Keen Tree Calculation

binary search, data structures, dp, geometry, graphs, implementation, trees

Jackets and Packets

dp

Imagination Castle

dp, games, two pointers

Happy Sets

combinatorics

Grouped Carriages

binary search, data structures, dp, flows, greedy

Freak Joker Process

binary search, data structures, sortings

Elevators of Tamem

dp