Cyclic Shifts

*special problem, strings

Paint the String

*special problem, dp, strings

Suffix Subgroup

*special problem, strings

Palindromic Magic

data structures, hashing, strings

Boboniu and Banknote Collection

strings

Mateusz and an Infinite Sequence

bitmasks, brute force, dp, strings

Upside Down

data structures, string suffix structures, strings, trees

Alphabetic Tree

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

String Theory

geometry, math, strings

Toys

greedy, strings

Rap God

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

Hongcow Masters the Cyclic Shift

strings, two pointers

Ж-function

string suffix structures, strings

kotlinkotlinkotlinkotlin...

*special problem, graphs, implementation, strings

Cutting the Line

string suffix structures, strings

Six Characters

constructive algorithms, strings

Fibonacci Strings

strings

Fibonacci Strings

matrices, strings

Detect Robots

data structures, strings

Moonwalk challenge

data structures, strings, trees

Speckled Band

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

Ali goes shopping

*special problem, brute force, strings

Mahmoud and Ehab and the final stage

data structures, strings

Twilight and Ancient Scroll (harder version)

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

Fedya the Potter Strikes Back

data structures, strings

The Sum of Good Numbers

hashing, math, string suffix structures, strings

Expected Value Again

combinatorics, strings

Modest Substrings

dp, strings

Fibonacci Suffix

strings

Find String in a Grid

data structures, dp, strings, trees

Prefixes and Suffixes

*special problem, strings

Representative Sampling

dp, sortings, strings

In Every Generation...

strings

Wrap Around

dp, strings

Twilight and Ancient Scroll (easier version)

dp, hashing, implementation, string suffix structures, strings

AB-Strings

constructive algorithms, strings

Two Prefixes

strings

Reverses

dp, string suffix structures, strings

Chainword

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

Xenia and String Problem

dp, hashing, implementation, string suffix structures, strings

World of Mouth

*special problem, strings

Appleman and a Game

binary search, shortest paths, strings

String Distance

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

Smart Boy

dp, games, strings

Au Pont Rouge

binary search, dp, strings

Speed Dial

dp, strings, trees

The Next Good String

data structures, greedy, hashing, strings

Puzzle Lover

dp, hashing, strings

Wilbur and Strings

dfs and similar, dp, graphs, strings

Fake News (medium)

constructive algorithms, strings

Tree and XOR

strings, trees

Writing a Song

brute force, dp, strings

Scissors

brute force, strings

Mission Impassable

dp, strings

Concatenation with intersection

data structures, hashing, strings, two pointers

String Transformation

hashing, strings

Dasha and cyclic table

bitmasks, brute force, fft, strings, trees

Holiday Wall Ornaments

dp, strings

Construct the String

data structures, dp, strings

Dreamoon and Binary

dp, strings

Similar Words

dp, hashing, strings, trees

Have You Ever Heard About the Word?

greedy, hashing, string suffix structures, strings

Expensive Strings

string suffix structures, strings

And Yet Another Bracket Sequence

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

Gnikool Ssalg

*special problem, implementation, strings

Digits of Number Pi

dp, implementation, strings

Mr. Kitayuta's Gift

combinatorics, dp, matrices, strings

Tricky and Clever Password

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

x-prime Substrings

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

Xors on Segments

data structures, strings, trees

Elementary!

*special problem, brute force, dp, strings

Two Permutations

data structures, hashing, strings

Palindrome Partition

dp, string suffix structures, strings

Middle-Out

constructive algorithms, greedy, strings

Birthday

graph matchings, strings

Diverse Substrings

dp, strings, two pointers

Typical Party in Dorm

bitmasks, combinatorics, dp, strings

Refactoring

greedy, implementation, strings

DZY Loves Strings

binary search, hashing, strings, two pointers

Duff is Mad

data structures, strings

Calendar

greedy, strings

Minlexes

dp, greedy, implementation, strings

Minimal String Xoration

bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

Strange LCS

bitmasks, dp, graphs, greedy, strings

Indie Album

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

Alphabet Permutations

data structures, strings

Rusty String

fft, math, strings

Codeword

combinatorics, strings

Name

greedy, strings

Death DBMS

data structures, string suffix structures, strings, trees

The Supersonic Rocket

geometry, hashing, strings

Enormous XOR

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

Evolution of Weasels

greedy, implementation, strings

Paper task

data structures, string suffix structures, strings

Song of the Sirens

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

Sonya and Matrix Beauty

strings

Minus and Minus Give Plus

*special problem, implementation, strings

Marbles

hashing, strings

Matching Names

dfs and similar, strings, trees