Paint the String

*special problem, dp, strings

Cyclic Shifts

*special problem, strings

Suffix Subgroup

*special problem, strings

Boboniu and Banknote Collection

strings

Palindromic Magic

data structures, hashing, strings

Mateusz and an Infinite Sequence

bitmasks, brute force, dp, strings

Ж-function

string suffix structures, strings

Upside Down

data structures, string suffix structures, strings, trees

Detect Robots

data structures, strings

Rap God

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

Hongcow Masters the Cyclic Shift

strings, two pointers

Speckled Band

data structures, divide and conquer, hashing, string suffix structures, strings

kotlinkotlinkotlinkotlin...

*special problem, graphs, implementation, strings

Cutting the Line

string suffix structures, strings

Moonwalk challenge

data structures, strings, trees

Fibonacci Strings

matrices, strings

Fibonacci Strings

strings

Ali goes shopping

*special problem, brute force, strings

Mahmoud and Ehab and the final stage

data structures, strings

Fedya the Potter Strikes Back

data structures, strings

Expected Value Again

combinatorics, strings

Fibonacci Suffix

strings

Modest Substrings

dp, strings

Twilight and Ancient Scroll (harder version)

dp, hashing, implementation, string suffix structures, strings, two pointers

Find String in a Grid

data structures, dp, strings, trees

Two Prefixes

strings

String Distance

binary search, brute force, data structures, hashing, implementation, strings

Reverses

dp, string suffix structures, strings

Chainword

brute force, data structures, dp, matrices, string suffix structures, strings

AB-Strings

constructive algorithms, strings

Representative Sampling

dp, sortings, strings

Twilight and Ancient Scroll (easier version)

dp, hashing, implementation, string suffix structures, strings

Wrap Around

dp, strings

Xenia and String Problem

dp, hashing, implementation, string suffix structures, strings

Appleman and a Game

binary search, shortest paths, strings

Au Pont Rouge

binary search, dp, strings

World of Mouth

*special problem, strings

Puzzle Lover

dp, hashing, strings

Scissors

brute force, strings

Smart Boy

dp, games, strings

Speed Dial

dp, strings, trees

Fake News (medium)

constructive algorithms, strings

Tree and XOR

strings, trees

Concatenation with intersection

data structures, hashing, strings, two pointers

Wilbur and Strings

dfs and similar, dp, graphs, strings

The Next Good String

data structures, greedy, hashing, strings

Mission Impassable

dp, strings

Writing a Song

brute force, dp, strings

String Transformation

hashing, strings

Dasha and cyclic table

bitmasks, brute force, fft, strings, trees

Digits of Number Pi

dp, implementation, strings

Dreamoon and Binary

dp, strings

Construct the String

data structures, dp, strings

And Yet Another Bracket Sequence

data structures, greedy, hashing, string suffix structures, strings

Expensive Strings

string suffix structures, strings

Mr. Kitayuta's Gift

combinatorics, dp, matrices, strings

Similar Words

dp, hashing, strings, trees

Have You Ever Heard About the Word?

greedy, hashing, string suffix structures, strings

Gnikool Ssalg

*special problem, implementation, strings

x-prime Substrings

brute force, dfs and similar, dp, string suffix structures, strings

Palindrome Partition

dp, string suffix structures, strings

Diverse Substrings

dp, strings, two pointers

Birthday

graph matchings, strings

Xors on Segments

data structures, strings, trees

Tricky and Clever Password

binary search, constructive algorithms, data structures, greedy, hashing, strings

Two Permutations

data structures, hashing, strings

Duff is Mad

data structures, strings

Elementary!

*special problem, brute force, dp, strings

DZY Loves Strings

binary search, hashing, strings, two pointers

Middle-Out

constructive algorithms, greedy, strings

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

Indie Album

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

Alphabet Permutations

data structures, strings

Death DBMS

data structures, string suffix structures, strings, trees

Calendar

greedy, strings

Refactoring

greedy, implementation, strings

Enormous XOR

bitmasks, constructive algorithms, greedy, math, strings, two pointers

Minlexes

dp, greedy, implementation, strings

Rusty String

fft, math, strings

Substrings in a String

bitmasks, brute force, data structures, string suffix structures, strings

Paper task

data structures, string suffix structures, strings

Sonya and Matrix Beauty

strings

Codeword

combinatorics, strings

Name

greedy, strings

Song of the Sirens

combinatorics, divide and conquer, hashing, math, string suffix structures, strings

The Supersonic Rocket

geometry, hashing, strings

Bracket Substring

dp, strings

Koala and Notebook

data structures, dfs and similar, graphs, shortest paths, strings, trees

Matching Names

dfs and similar, strings, trees

Morse Code

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

Games on a CD

data structures, hashing, string suffix structures, strings

Cool Slogans

string suffix structures, strings

Minus and Minus Give Plus

*special problem, implementation, strings

Marbles

hashing, strings

Death Stars (medium)

hashing, strings

Log Stream Analysis

binary search, brute force, implementation, strings

Three strings

data structures, dsu, string suffix structures, strings

Peterson Polyglot

brute force, dfs and similar, dsu, hashing, strings, trees

Awesome Substrings

math, strings

Encoding

hashing, string suffix structures, strings