Permutation Coloring Game

brute force, dp, dsu, games, greedy, implementation, math

Precision Alignment

binary search, brute force, greedy, implementation

Unrequited Love

brute force, data structures

Six-Seven Bags

brute force, greedy, interactive

Aura Battle

brute force, implementation, interactive, math

Matrix Puzzle

brute force, data structures, implementation, math, matrices

Target Infection

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

KiaKio and Squared Numbers

brute force, implementation

What a SauSaGe! It's All Meat

bitmasks, brute force, data structures, math

XOR Transformations (Hard Version)

bitmasks, brute force, data structures, dfs and similar, greedy, math, sortings, strings, trees

XOR Transformations (Easy Version)

bitmasks, brute force, implementation, sortings

Fashionable Array

brute force, constructive algorithms, sortings

MEX Replacement

binary search, brute force, greedy, implementation, math, sortings

Prime Destruction

brute force, dp, math, number theory

A Prime Flood (Hard Version)

brute force, combinatorics, combinatorics, combinatorics, dp, dp, number theory, number theory

Dr. Agos's Dark Mode

brute force, chinese remainder theorem, constructive algorithms, math, strings

Plegma II: Ask Me Any Cell (Easy Version)

brute force, constructive algorithms, dp, greedy, math

Sortable Permutations

brute force, combinatorics, math, number theory

Edge Three-Coloring

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

Signs of Prefix Sums

brute force, constructive algorithms, dfs and similar, dp, implementation

Monocarp and Projects

brute force, math, number theory

Moo Language School

brute force, greedy, greedy, greedy, greedy, two pointers

Carrot Chopdown (Hard Version)

brute force, greedy, implementation, math

Carrot Chopdown (Easy Version)

brute force, games, math

Busy Beaver

brute force, data structures, divide and conquer, dp, greedy, implementation, sortings

Creating Abbreviations

brute force, strings

What Will Remain at the End? (Easy Version)

brute force, data structures, data structures

Diameter Intersections

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

Hypercarp and Interdimensional Jumps

binary search, brute force, geometry, greedy, implementation, math

Hypercarp and the Control Panel

brute force, data structures, two pointers

Risky Tower

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

Threshold Movement

brute force, implementation, math

Rank Subsequence

brute force, greedy, implementation

Excuse for Breaks

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

diss_quack and Array Game

bitmasks, brute force, games, greedy

Connect Connect See

brute force, brute force, data structures

Familiar?

brute force, combinatorics, dp

Product of Closures

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

Unstable Elements

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

Annoying the Ghost

brute force, greedy

Criterion in Burlandia

binary search, bitmasks, brute force, brute force, data structures, data structures, dfs and similar, divide and conquer, implementation, trees, two pointers

Friendly Gifts

brute force, dp

Omsk Programmers

brute force, greedy, greedy, math, math

Vlad, Misha and Two Arrays

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

Palindrome, Twelve and Two Terms

brute force, constructive algorithms, math

Goods on the Shelf

brute force, data structures, implementation, two pointers

Cost of a Bracket Sequence

brute force, dp, greedy

AI Project Development

brute force, math

Quadratic Jumps

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

Slimes on a Line

brute force, greedy, math

Cirno and Number (Easy Version)

binary search, brute force, dp, greedy, implementation

Palindromex

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

Simple Problem

brute force, graphs, greedy, number theory

String Cutting

binary search, brute force, brute force, greedy, hashing, string suffix structures, string suffix structures, strings, strings

Exceptional Segments

bitmasks, brute force, math

Alternating String

brute force, greedy

Counting Sort?

brute force, combinatorics, dp

Statistics on Tree

binary search, brute force, dfs and similar, dfs and similar, divide and conquer, graphs, trees, trees

A Wonderful Contest

brute force, dp, math

Grid L

brute force, constructive algorithms, math, number theory

The 67th XOR Problem

binary search, bitmasks, brute force

The 67th Integer Problem

brute force, games, implementation, math

EXPloration, EXPloitation, and Gain Some EXPerience!

bitmasks, brute force, dp, greedy, implementation

Oriented Journey

bitmasks, brute force, communication, constructive algorithms, graphs, interactive, trees

RReeppeettiittiioonn

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

Special Problem

*special problem, brute force, games, interactive

Minimum Path Cover

brute force, dp, greedy, interactive, interactive, math, number theory, trees

Equal Multisets (Easy Version)

binary search, brute force, greedy, two pointers

A Trivial String Problem

brute force, dp, hashing, string suffix structures, strings

Cyclists

brute force, games, greedy, implementation, math, sortings

Simons and Diophantus Equation

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

Simons and Making It Beautiful

brute force, constructive algorithms, constructive algorithms, constructive algorithms, constructive algorithms, constructive algorithms, constructive algorithms

Sum of Fractions

binary search, brute force, combinatorics, data structures, greedy, math, number theory, two pointers

Sum of Digits (and Again)

brute force, constructive algorithms, math

Passing the Ball

brute force, implementation

Divisibility Game

brute force, games, games, games, greedy, number theory, number theory

Mooclear Reactor 2

brute force, data structures, greedy, implementation, sortings

Specialty String

brute force, greedy, strings

Deletion Sort

bitmasks, brute force, greedy, sortings

Friendly Numbers

binary search, brute force, expression parsing, math, schedules

Indivisible

brute force, constructive algorithms, graphs

Fuzzy Concatenation (Easy Version)

binary search, bitmasks, brute force, data structures, greedy, string suffix structures

Another Problem about Beautiful Pairs

brute force, math, two pointers

Codeforces Heuristic Contest 001

brute force, constructive algorithms, geometry, implementation

Secret message

bitmasks, brute force, dp, math, number theory

DBMB and the Array

brute force, math

String Rotation Game

brute force, strings

Doors and Keys

brute force, data structures, dp

BattleCows 2

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

Jumping Man

brute force, combinatorics, dfs and similar, dp, trees

Christmas Reindeer (hard version)

bitmasks, brute force, combinatorics, data structures, greedy, math

Christmas Reindeer (easy version)

bitmasks, brute force, combinatorics, dp, math

Production of Snowmen

brute force, combinatorics, dp

New Year Cake

brute force

Jinx or Jackpot

brute force, dp, math, probabilities

Honey Cake

brute force, math, number theory

Elevator Against Humanity

brute force, constructive algorithms, greedy, sortings

Carnival Wheel

brute force, number theory

Blackslex and Penguin Migration

brute force, interactive, math

Isla's Memory Thresholds

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