Stringforces

binary search, bitmasks, brute force, dp, strings, two pointers

Frequency of String

hashing, string suffix structures, strings

Kefa and Watch

data structures, hashing, strings

Fibonacci Strings

strings

Refactoring

greedy, implementation, strings

The Supersonic Rocket

geometry, hashing, strings

Comfortably Numb

bitmasks, data structures, divide and conquer, strings, trees

Encoding

hashing, string suffix structures, strings

Sonya and Matrix Beauty

strings

Morse Code

binary search, data structures, dp, hashing, sortings, string suffix structures, strings

Three strings

data structures, dsu, string suffix structures, strings

Acyclic Organic Compounds

data structures, dfs and similar, dsu, hashing, strings, trees

Typical Party in Dorm

bitmasks, combinatorics, dp, strings

Forbidden Indices

dsu, string suffix structures, strings

String Compression

dp, hashing, string suffix structures, strings

Bracket Cost

binary search, data structures, divide and conquer, dp, greedy, strings

Chaotic Merge

combinatorics, dp, math, strings

String Set Queries

brute force, data structures, hashing, interactive, string suffix structures, strings

Xor-Subsequence (hard version)

bitmasks, data structures, dp, strings, trees

Fedor and Essay

dfs and similar, dp, graphs, hashing, strings

You Are Given Some Strings...

brute force, string suffix structures, strings

A Bit Similar

bitmasks, brute force, hashing, string suffix structures, strings, two pointers

kotlinkotlinkotlinkotlin...

*special problem, graphs, implementation, strings

Similar Words

dp, hashing, strings, trees

Restore a Number

brute force, constructive algorithms, strings

Vasya and Templates

greedy, implementation, strings

Matching Names

dfs and similar, strings, trees

Side Transmutations

combinatorics, strings

Bracket Substring

dp, strings

Ann and Half-Palindrome

data structures, dp, graphs, string suffix structures, strings, trees

Games on a CD

data structures, hashing, string suffix structures, strings

String Multiplication

dp, greedy, strings

Lock Puzzle

constructive algorithms, implementation, strings

Poman Numbers

bitmasks, greedy, math, strings

Isomorphic Strings

hashing, strings

Martian Strings

string suffix structures, strings

Enchanted Artifact

constructive algorithms, interactive, strings

Pattern Matching

bitmasks, data structures, dfs and similar, graphs, hashing, sortings, strings

Anthem of Berland

dp, strings

A Simple Task

data structures, sortings, strings

Suffix Subgroup

*special problem, strings

Representative Sampling

dp, sortings, strings

Fake News (medium)

constructive algorithms, strings

Holiday Wall Ornaments

dp, strings

Middle-Out

constructive algorithms, greedy, strings

Huge Strings

bitmasks, brute force, dp, implementation, strings

Vladik and chat

brute force, constructive algorithms, dp, implementation, strings

Abbreviation

dp, hashing, strings

Intellectual Inquiry

dp, greedy, strings

Swapping Characters

brute force, hashing, implementation, strings

Short Code

data structures, dp, greedy, strings, trees

Kuro and GCD and XOR and SUM

binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees

Two Bracket Sequences

dp, strings, two pointers

Dreamoon and Strings

dp, strings

Prefix Function Queries

dfs and similar, dp, hashing, string suffix structures, strings, trees

Three Religions

dp, implementation, strings

Sofia and Strings

data structures, greedy, sortings, strings, two pointers

The minimal unique substring

constructive algorithms, math, strings

Match & Catch

dp, string suffix structures, strings

Om Nom and Necklace

hashing, string suffix structures, strings

Test

hashing, strings

Kill Anton

brute force, constructive algorithms, data structures, math, strings

Lexicographically Small Enough

brute force, data structures, greedy, strings

Equal Binary Subsequences

constructive algorithms, geometry, greedy, implementation, strings

Erase Subsequences

dp, strings

Prefixes and Suffixes

constructive algorithms, strings, two pointers

Kaavi and Magic Spell

dp, strings

Palindrome Degree

hashing, strings

Erase and Extend (Hard Version)

binary search, data structures, greedy, hashing, string suffix structures, strings, two pointers

Smart Boy

dp, games, strings

Writing a Song

brute force, dp, strings

Hostname Aliases

*special problem, binary search, data structures, implementation, sortings, strings

Maximum Questions

data structures, dp, strings

String Mark

combinatorics, math, strings

Mysterious Code

dp, strings

Vanya and Brackets

brute force, dp, expression parsing, greedy, implementation, strings

Letters Removing

data structures, strings

DNA Evolution

data structures, strings

Compress String

dp, strings

Another Wine Tasting Event

combinatorics, constructive algorithms, math, strings

Check Transcription

brute force, data structures, hashing, strings

Messenger

data structures, hashing, implementation, string suffix structures, strings

Cut Substrings

combinatorics, dp, hashing, strings, two pointers

Rearrange Brackets

brute force, dp, greedy, sortings, strings

Unstable String Sort

data structures, dfs and similar, dsu, graphs, greedy, implementation, strings

Sum over all Substrings (Hard Version)

bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings

You Are Given a WASD-string...

brute force, data structures, dp, greedy, implementation, math, strings

Two strings

binary search, hashing, strings, two pointers

Grime Zoo

brute force, greedy, implementation, strings

String

brute force, constructive algorithms, hashing, implementation, string suffix structures, strings

Guess Game

bitmasks, data structures, games, math, probabilities, sortings, strings, trees

Promising String (hard version)

data structures, implementation, math, strings

Hossam and (sub-)palindromic tree

brute force, data structures, dfs and similar, dp, strings, trees

Funny Substrings

data structures, hashing, implementation, matrices, strings

Beautiful Subarrays

data structures, divide and conquer, strings, trees

Minimax

constructive algorithms, greedy, strings

Kirk and a Binary String (hard version)

data structures, greedy, math, strings

Bracket Walk

data structures, greedy, strings

Subsequences of Length Two

dp, strings

Diverse Substrings

dp, strings, two pointers