Turtle and Inversions (Easy Version)

brute force, divide and conquer, dp, greedy, math

Turtle and a MEX Problem (Hard Version)

dfs and similar, dp, graphs, greedy, implementation, math

Turtle and a MEX Problem (Easy Version)

greedy, math

Court Blue (Hard Version)

brute force, dp, math, number theory

Court Blue (Easy Version)

brute force, dfs and similar, dp, math, number theory

Black Circles

brute force, geometry, greedy, math

Distanced Coloring

constructive algorithms, implementation, math

Deterministic Heap (Easy Version)

combinatorics, dp, math, trees

Color Rows and Columns

dp, greedy, implementation, math

Photoshoot for Gorillas

combinatorics, data structures, greedy, math

Primary Task

implementation, math, strings

Expected Median

combinatorics, math

Triple Operations

dp, implementation, math

A+B Again?

implementation, math

Minimize Equal Sum Subarrays

constructive algorithms, math, number theory

Find K Distinct Points with Fixed Center

constructive algorithms, implementation, math

Chips on a Line

brute force, combinatorics, dp, greedy, math

Bomb

binary search, greedy, math

Decode

combinatorics, data structures, implementation, math

Fun

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

Legs

binary search, math, ternary search

Squaring

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

Bouquet (Hard Version)

binary search, data structures, greedy, math, 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

Wooden Game

bitmasks, greedy, math, trees

Funny Game

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

Fun Game

bitmasks, constructive algorithms, greedy, math

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

Light Switches

implementation, math

Ultra-Meow

combinatorics, dp, math

Novice's Mistake

brute force, constructive algorithms, implementation, math, strings

Gorilla and Permutation

constructive algorithms, math

Angry Monk

greedy, math, sortings

Only Pluses

brute force, constructive algorithms, greedy, math, sortings

Prime Split Game

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

Triangle Formation

brute force, greedy, implementation, math, sortings

Prime XOR Coloring

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

Absolute Zero

constructive algorithms, greedy, math

Mad MAD Sum

brute force, greedy, math

Distance to Different

combinatorics, dp, math

Smithing Skill

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

Two Movies

greedy, math

Heartbeat

combinatorics, dp, fft, math

Split the Multiset

brute force, greedy, implementation, math

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

Beautiful Array

greedy, math, number theory, sortings

Mathematical Problem

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

X Axis

brute force, geometry, math, sortings

D-Function

combinatorics, math, number theory

Secret Box

brute force, combinatorics, math

Manhattan Circle

implementation, math

Maximum Multiple Sum

brute force, math, number theory

Reconstruction

brute force, dp, math

''a'' String Problem

brute force, hashing, implementation, math, string suffix structures, strings

Magnitude (Hard Version)

combinatorics, dp, greedy, math

Magnitude (Easy Version)

dp, greedy, math

Large Addition

implementation, math

I Love Balls

combinatorics, math, probabilities

Swap Dilemma

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

Corner Twist

constructive algorithms, greedy, implementation, math

Array Divisibility

constructive algorithms, math

Number of k-good subarrays

bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle

Beauty of the mountains

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

Collatz Conjecture

brute force, implementation, math, number theory

Soccer

greedy, implementation, math, sortings

Turtle and an Incomplete Sequence

bitmasks, brute force, constructive algorithms, greedy, implementation, math

Turtle and an Infinite Sequence

bitmasks, math

Turtle and Piggy Are Playing a Game

brute force, greedy, math

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

GCD-sequence

greedy, implementation, math, number theory

Problem Generator

math

Elections

data structures, greedy, implementation, math

Manhattan Permutations

constructive algorithms, data structures, greedy, implementation, math

New Bakery

binary search, greedy, math, ternary search

Nikita and LCM

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

Binary Colouring

bitmasks, constructive algorithms, greedy, math

Little Nikita

math

Splittable Permutations

combinatorics, data structures, dfs and similar, greedy, math, trees

Zimpha Fan Club

fft, greedy, math, strings

Set

bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math

378QAQ and Mocha's Array

brute force, greedy, math, sortings

Phone Desktop

greedy, math

Cat, Fox and Swaps

graphs, math, sortings

Cat, Fox and Maximum Array Split

brute force, interactive, math

Cat, Fox and Double Maximum

constructive algorithms, greedy, implementation, math, sortings

Cat, Fox and the Lonely Array

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

Chess For Three

brute force, dp, implementation, math

Circle Perimeter

binary search, brute force, dfs and similar, geometry, implementation, math

Find the Car

binary search, math, sortings

Shop Game

data structures, greedy, math, sortings

Two Friends

constructive algorithms, implementation, math

Division + LCP (hard version)

binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings

Permutation Game

brute force, dfs and similar, games, graphs, greedy, math