Rarity and New Dress

dfs and similar, dp, implementation, shortest paths

ZS Shuffles Cards

combinatorics, dp, math, probabilities

Omkar and Pies

bitmasks, dfs and similar, dp, math, shortest paths

Omkar and Bed Wars

dp, greedy

505

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

Cyclic Permutations

combinatorics, dp, graphs, math

Directing Edges

dfs and similar, dp, graphs, trees

Bicolored Segments

data structures, dp, graph matchings, sortings

Good String

brute force, dp, greedy, two pointers

Array Walk

brute force, dp, greedy

Viruses

*special problem, dp, shortest paths, string suffix structures

Village (Minimum)

*special problem, dp, greedy, trees

Graph

*special problem, binary search, dfs and similar, dp, math, ternary search

a-Good String

bitmasks, brute force, divide and conquer, dp, implementation

Koa and the Beach (Hard Version)

constructive algorithms, dp, greedy, implementation

Koa and the Beach (Easy Version)

brute force, dp, greedy

Strange Operation

combinatorics, data structures, dp

String Transformation 2

bitmasks, dp, graphs, trees

GameGame

bitmasks, constructive algorithms, dp, games, greedy, math

Sequential Nim

dp, games

The Majestic Brown Tree Snake

dfs and similar, dp, greedy, trees, two pointers

Unmerge

dp

Strange Addition

data structures, dp, matrices

Create The Teams

brute force, dp, greedy, implementation, sortings

Inverse Genealogy

constructive algorithms, divide and conquer, dp, math, trees

Choosing flowers

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

Sum of Digits

brute force, constructive algorithms, dp, greedy

Maximum Sum on Even Positions

divide and conquer, dp, greedy, implementation

Omkar and Last Floor

dp, greedy, two pointers

Omkar and Circle

brute force, dp, games, greedy

Asterism (Hard Version)

binary search, combinatorics, dp, math, number theory, sortings

Odd-Even Subsequence

binary search, dp, dsu, greedy, implementation

BareLee

dfs and similar, dp, games

TediousLee

dp, graphs, greedy, math, trees

Breadboard Capacity (easy version)

dp, flows, greedy

Flying Sort (Hard Version)

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

Flying Sort (Easy Version)

dp, greedy, two pointers

Necklace Assembly

brute force, dfs and similar, dp, graphs, greedy, number theory

Construct the String

data structures, dp, strings

Jog Around The Graph

binary search, dp, geometry, graphs

Two Arrays

binary search, brute force, combinatorics, constructive algorithms, dp, two pointers

Rotating Substrings

dp, strings

Tree Shuffling

dfs and similar, dp, greedy, trees

Spy-string

bitmasks, brute force, constructive algorithms, dp, hashing, strings

Polygon

dp, graphs, implementation, shortest paths

Yet Another Yet Another Task

data structures, dp, implementation, two pointers

New Theatre Square

brute force, dp, greedy, implementation, two pointers

Young Explorers

dp, greedy, sortings

Summoning Minions

constructive algorithms, dp, flows, graph matchings, greedy, sortings

Graph Coloring

dfs and similar, dp, graphs

Ternary String

binary search, dp, implementation, two pointers

Decreasing Heights

brute force, dp

K-periodic Garland

brute force, dp, greedy

Orac and Models

dp, math, number theory

Slime and Sequences (Hard Version)

dp, fft, math

Slime and Sequences (Easy Version)

dp, fft, math

Slime and Hats

constructive algorithms, dp, greedy

Phoenix and Berries

brute force, dp, greedy, math

Pac-Man 2.0

*special problem, dp

Magic Tricks

*special problem, dp, graphs

Card Constructions

binary search, brute force, dp, math

Quantifier Question

dfs and similar, dp, graphs, math

Alternating Subsequence

dp, greedy, two pointers

Make It Ascending

bitmasks, brute force, dp

Nastya and Unexpected Guest

dfs and similar, dp, graphs, shortest paths

Nastya and Scoreboard

bitmasks, dp, graphs, greedy

Filling Diamonds

brute force, dp, implementation, math

Nested Rubber Bands

constructive algorithms, dfs and similar, dp, math, trees

Kaavi and Magic Spell

dp, strings

Linova and Kingdom

dfs and similar, dp, greedy, sortings, trees

Three Blocks Palindrome (hard version)

brute force, data structures, dp, two pointers

Three Blocks Palindrome (easy version)

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

Strange Function

binary search, data structures, dp, greedy

Independent Set

dfs and similar, dp, trees

Elementary!

*special problem, brute force, dp, strings

Carousel

constructive algorithms, dp, graphs, greedy, math

Letters and Question Marks

bitmasks, dp, string suffix structures

AND Segments

bitmasks, combinatorics, data structures, dp, two pointers

Count The Blocks

combinatorics, dp, math

Spiderweb Trees

dp, geometry, trees

Wise Men (Hard Version)

bitmasks, dp, math

Wise Men (Easy Version)

bitmasks, brute force, dp, meet-in-the-middle

Maximum White Subtree

dfs and similar, dp, graphs, trees

Sleeping Schedule

dp, implementation

Even Subset Sum Problem

brute force, dp, greedy, implementation

Assigning Fares

dp, trees

Reality Show

bitmasks, dp

Treeland and Viruses

data structures, dfs and similar, dp, shortest paths, trees

Journey Planning

data structures, dp, greedy, math, sortings

Team Building

bitmasks, dp, greedy, sortings

Homecoming

binary search, dp, greedy, strings

Happy New Year

bitmasks, dp, implementation

Skyscrapers (hard version)

data structures, dp, greedy

Skyscrapers (easy version)

brute force, data structures, dp, greedy

Autocompletion

data structures, dfs and similar, dp

Array Shrinking

dp, greedy

Strange Function

dp

Tourism

dp, graphs, probabilities

Au Pont Rouge

binary search, dp, strings

Double Elimination

dp, implementation