Find K Distinct Points with Fixed Center

constructive algorithms, implementation, math

Chips on a Line

brute force, combinatorics, dp, greedy, math

Level Up

binary search, brute force, data structures, divide and conquer, implementation

Maximize the Root

binary search, dfs and similar, dp, greedy, trees

Even Positions

constructive algorithms, data structures, greedy

Make Three Regions

constructive algorithms, two pointers

Strong Password

brute force, implementation, strings

Penacony

brute force, data structures, graphs, greedy, hashing

Bomb

binary search, greedy, math

Decode

combinatorics, data structures, implementation, math

Fun

binary search, brute force, combinatorics, math, number theory

Sort

dp, greedy, sortings, strings

Scale

greedy, implementation

Legs

binary search, math, ternary search

Let Me Teach You a Lesson (Hard Version)

data structures, dp, matrices, two pointers

Let Me Teach You a Lesson (Easy Version)

2-sat, data structures, dp, matrices, two pointers

Cases

bitmasks, brute force, dp, strings

Squaring

brute force, constructive algorithms, greedy, implementation, math, number theory

Bouquet (Hard Version)

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

Bouquet (Easy Version)

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

Diagonals

brute force, greedy, implementation, math

Fortnite

combinatorics, constructive algorithms, games, greedy, hashing, interactive, math, number theory, strings

Minecraft

bitmasks, brute force, dp, graphs, math

Stardew Valley

constructive algorithms, dfs and similar, graphs, trees

Wooden Game

bitmasks, greedy, math, trees

Funny Game

constructive algorithms, dsu, graphs, greedy, math, number theory, trees

Hungry Games

binary search, dp, two pointers

Fun Game

bitmasks, constructive algorithms, greedy, math

Diverse Game

constructive algorithms, greedy, implementation

Dyn-scripted Robot (Hard Version)

chinese remainder theorem, math, number theory

Dyn-scripted Robot (Easy Version)

brute force, chinese remainder theorem, constructive algorithms, math, number theory

Xor-Grid Problem

bitmasks, constructive algorithms, dp, implementation

Med-imize

binary search, dp, greedy

Light Switches

implementation, math

Parity and Sum

constructive algorithms, greedy

Question Marks

greedy, implementation

Ultra-Meow

combinatorics, dp, math

Valuable Cards

brute force, dp, greedy, number theory, two pointers

Novice's Mistake

brute force, constructive algorithms, implementation, math, strings

Test of Love

dp, greedy, implementation

Gorilla and Permutation

constructive algorithms, math

Angry Monk

greedy, math, sortings

Only Pluses

brute force, constructive algorithms, greedy, math, sortings

Grid Game

constructive algorithms, games, graph matchings, greedy, interactive

Prime Split Game

bitmasks, dp, fft, games, math, number theory

Grid Reset

constructive algorithms, greedy, implementation

Triangle Formation

brute force, greedy, implementation, math, sortings

Coloring Game

constructive algorithms, dfs and similar, games, graphs, greedy, interactive

Prime XOR Coloring

bitmasks, constructive algorithms, graphs, greedy, math, number theory

Absolute Zero

constructive algorithms, greedy, math

AND Reconstruction

bitmasks, constructive algorithms, greedy

Maximize the Last Element

greedy, implementation

Polygonal Segments

brute force, data structures, divide and conquer, dp, greedy, two pointers

Catch the Mole(Hard Version)

binary search, data structures, dfs and similar, divide and conquer, interactive, trees

Catch the Mole(Easy Version)

binary search, data structures, dfs and similar, interactive, trees

Grid Puzzle

bitmasks, brute force, dp, greedy, implementation

Mad MAD Sum

brute force, greedy, math

Array Craft

constructive algorithms, greedy

Submission Bait

brute force, games, greedy, sortings

Simultaneous Coloring

dfs and similar, divide and conquer, graphs

Distance to Different

combinatorics, dp, math

Smithing Skill

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

Two Movies

greedy, math

Substring and Subsequence

brute force, greedy, strings

Catch the Coin

implementation

Heartbeat

combinatorics, dp, fft, math

Range Minimum Sum

binary search, brute force, data structures, divide and conquer, implementation

The Omnipotent Monster Killer

brute force, dfs and similar, dp, trees

Increasing Sequence with Fixed OR

bitmasks, constructive algorithms, greedy

Make Majority

greedy, implementation

Split the Multiset

brute force, greedy, implementation, math

Fumo Temple

interactive

Spinning Round (Hard Version)

divide and conquer, dp, trees

Spinning Round (Easy Version)

divide and conquer, dp, trees

Interesting Problem (Hard Version)

dp

Interesting Problem (Easy Version)

dp

Wonderful Tree!

brute force, data structures, dfs and similar, dsu, greedy, trees

World is Mine

dp, games

Basil's Garden

dp, greedy

K-Sort

greedy

Upload More RAM

greedy, math

Permutation Problem (Hard Version)

brute force, data structures, hashing, math, number theory

Permutation Problem (Simple Version)

binary search, brute force, combinatorics, data structures, math, number theory

Non-academic Problem

dfs and similar, graphs, trees

Beautiful Array

greedy, math, number theory, sortings

Mathematical Problem

brute force, dp, greedy, implementation, math, two pointers

Update Queries

data structures, greedy, sortings

Matrix Stabilization

brute force, data structures, greedy, sortings

X Axis

brute force, geometry, math, sortings

Maximize the Largest Component (Hard Version)

data structures, dfs and similar, dp, dsu, implementation

Maximize the Largest Component (Easy Version)

brute force, data structures, dfs and similar, dsu, graphs, implementation

D-Function

combinatorics, math, number theory

Final Boss

binary search, data structures

Secret Box

brute force, combinatorics, math

Manhattan Circle

implementation, math

Good Prefixes

greedy

Maximum Multiple Sum

brute force, math, number theory

Creating Words

implementation, strings

Tower Capturing

combinatorics, dp, geometry

Magic Trick II

constructive algorithms, implementation, sortings