Compress String

dp, strings

Three Religions

dp, implementation, strings

A Bit Similar

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

The Fair Nut and Strings

greedy, strings

Prefix Function Queries

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

Frequency of String

hashing, string suffix structures, strings

You Are Given Some Strings...

brute force, string suffix structures, strings

Pretty Song

math, strings

Jabber ID

implementation, strings

Fedor and Essay

dfs and similar, dp, graphs, hashing, strings

Dreamoon and Strings

dp, strings

Periodic integer number

implementation, strings

Two Bracket Sequences

dp, strings, two pointers

Xor-Subsequence (hard version)

bitmasks, data structures, dp, strings, trees

Two Strings

data structures, dp, strings

Text Messaging

expression parsing, greedy, strings

Beaver

data structures, dp, greedy, hashing, strings, two pointers

Isomorphic Strings

hashing, strings

Kuro and GCD and XOR and SUM

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

Evolution of Weasels

greedy, implementation, strings

String Set Queries

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

Hockey

implementation, strings

DNA Evolution

data structures, strings

Letters Removing

data structures, strings

Palindromic Cut

brute force, implementation, strings

Poman Numbers

bitmasks, greedy, math, strings

e-Government

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

Logging

implementation, strings

Palisection

strings

Palindromes

dp, strings

Anagram

greedy, strings

Sereja and Periods

binary search, dfs and similar, strings

Stringforces

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

Substrings in a String

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

Vanya and Brackets

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

Chaotic Merge

combinatorics, dp, math, strings

Bracket Cost

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

Short Code

data structures, dp, greedy, strings, trees

Rescue Niwen!

dp, greedy, string suffix structures, strings

String Compression

dp, hashing, string suffix structures, strings

Forbidden Indices

dsu, string suffix structures, strings

Rotating Substrings

dp, strings

Tree-String Problem

*special problem, dfs and similar, hashing, strings

Stepan and Vowels

*special problem, implementation, strings

Swapping Characters

brute force, hashing, implementation, strings

Legen...

data structures, dp, matrices, strings

Intellectual Inquiry

dp, greedy, strings

Mysterious Code

dp, strings

Reachable Strings

data structures, hashing, strings

Wizards and Minimal Spell

implementation, strings

Last Chance

data structures, implementation, strings

Picking Strings

constructive algorithms, implementation, strings

Lock Puzzle

constructive algorithms, implementation, strings

Palindrome Partition

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

Cool Slogans

string suffix structures, strings

String Multiplication

dp, greedy, strings

Games on a CD

data structures, hashing, string suffix structures, strings

Vasya and Types

implementation, strings

Abbreviation

dp, hashing, strings

Typical Party in Dorm

bitmasks, combinatorics, dp, strings

Awesome Substrings

math, strings

Acyclic Organic Compounds

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

String Mark

combinatorics, math, strings

Middle Duplication

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

Koala and Notebook

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

Text Editor

brute force, dp, greedy, strings

Minimal String Xoration

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

Ann and Half-Palindrome

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

Bracket Substring

dp, strings

Maximum Questions

data structures, dp, strings

Three strings

data structures, dsu, string suffix structures, strings

Side Transmutations

combinatorics, strings

Duff is Mad

data structures, strings

Hossam and Range Minimum Query

binary search, bitmasks, data structures, hashing, probabilities, strings, trees

Paper task

data structures, string suffix structures, strings

Death DBMS

data structures, string suffix structures, strings, trees

Indie Album

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

Good Substrings

hashing, strings

Hostname Aliases

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

Vladik and chat

brute force, constructive algorithms, dp, implementation, strings

Morse Code

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

Huge Strings

bitmasks, brute force, dp, implementation, strings

Sonya and Matrix Beauty

strings

Death Stars (medium)

hashing, strings

Palindrome Partition

dp, string suffix structures, strings

Matching Names

dfs and similar, strings, trees

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

Enormous XOR

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

Encoding

hashing, string suffix structures, strings

Log Stream Analysis

binary search, brute force, implementation, strings

Vasya and Templates

greedy, implementation, strings

Majority

combinatorics, dp, math, strings

Peterson Polyglot

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

Song of the Sirens

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

Restore a Number

brute force, constructive algorithms, strings

Strange LCS

bitmasks, dp, graphs, greedy, strings

Comfortably Numb

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

The Supersonic Rocket

geometry, hashing, strings

Autocompletion

*special problem, strings, trees

Rusty String

fft, math, strings