Masha-forgetful

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

Palindromic characteristics

brute force, dp, hashing, strings

Anagram Search

implementation, strings

Pattern

implementation, strings

Hard Work

strings

ZgukistringZ

brute force, constructive algorithms, implementation, strings

Ancient Prophesy

brute force, implementation, strings

Tavas and Malekas

greedy, hashing, string suffix structures, strings

Collapsing Strings

data structures, strings, trees

Dima and Text Messages

brute force, strings

Dasha and Nightmares

bitmasks, hashing, meet-in-the-middle, strings

Sum over all Substrings (Easy Version)

brute force, dp, greedy, strings

Unique Palindromes

constructive algorithms, math, strings

Professor Higashikata

data structures, dsu, greedy, implementation, strings

Punctuation

implementation, strings

Prime Permutation

implementation, number theory, strings

Palindrome Degree

hashing, strings

Newspaper Headline

greedy, strings

New Problem

brute force, strings

Reberland Linguistics

dp, implementation, strings

Login Verification

*special problem, strings

Kaavi and Magic Spell

dp, strings

Lucky Common Subsequence

dp, strings

Shuffling Songs

bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings

Facetook Priority Wall

expression parsing, implementation, strings

Non-Palindromic Substring

hashing, implementation, math, strings

Alyona and Strings

dp, strings

Linguistics

greedy, implementation, sortings, strings

Correct Bracket Sequence Editor

data structures, dsu, strings

Generating Sets

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

Bracket Walk

data structures, greedy, strings

Equalizing Two Strings

constructive algorithms, sortings, strings

Command Line Arguments

*special problem, implementation, strings

Kirk and a Binary String (hard version)

data structures, greedy, math, strings

String Manipulation 1.0

*special problem, binary search, brute force, data structures, strings

No Palindromes

brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings

Subsequences (hard version)

dp, strings

Minimax

constructive algorithms, greedy, strings

Beautiful Subarrays

data structures, divide and conquer, strings, trees

Kirk and a Binary String (easy version)

brute force, greedy, strings

Lexicography

constructive algorithms, strings

Innokenty and a Football League

2-sat, graphs, greedy, implementation, shortest paths, strings

Chladni Figure

brute force, strings

Funny Substrings

data structures, hashing, implementation, matrices, strings

Spelling Check

hashing, implementation, strings

Famil Door and Brackets

dp, strings

Petr#

brute force, data structures, hashing, strings

Ability To Convert

constructive algorithms, dp, greedy, math, strings

Spy Syndrome 2

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

Hossam and (sub-)palindromic tree

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

Promising String (hard version)

data structures, implementation, math, strings

Game with String

implementation, probabilities, strings

Prefixes and Suffixes

constructive algorithms, strings, two pointers

Hidden Word

brute force, constructive algorithms, implementation, strings

Obsessive String

dp, strings

Erase Subsequences

dp, strings

Lucky Transformation

strings

Fancy Number

brute force, greedy, sortings, strings

New Year and Ancient Prophecy

dp, hashing, strings

Exponential notation

implementation, strings

Guess Game

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

String

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

Grime Zoo

brute force, greedy, implementation, strings

Anthem of Berland

dp, strings

Equal Binary Subsequences

constructive algorithms, geometry, greedy, implementation, strings

Lexicographically Small Enough

brute force, data structures, greedy, strings

Two strings

binary search, hashing, strings, two pointers

Kill Anton

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

You Are Given a WASD-string...

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

Sum over all Substrings (Hard Version)

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

Unstable String Sort

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

Felicity is Coming!

data structures, hashing, sortings, strings

Work Group

dfs and similar, dp, graphs, strings, trees

Running Track

dp, greedy, strings, trees

Dense Subsequence

data structures, greedy, strings

Pattern Matching

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

Rearrange Brackets

brute force, dp, greedy, sortings, strings

Grammar Lessons

implementation, strings

Correcting Mistakes

constructive algorithms, dp, greedy, hashing, strings, two pointers

Test

hashing, strings

The minimal unique substring

constructive algorithms, math, strings

Om Nom and Necklace

hashing, string suffix structures, strings

Match & Catch

dp, string suffix structures, strings

Enchanted Artifact

constructive algorithms, interactive, strings

Cut Substrings

combinatorics, dp, hashing, strings, two pointers

Sofia and Strings

data structures, greedy, sortings, strings, two pointers

Higher Order Functions

implementation, strings

Messenger

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

Cyclical Quest

data structures, string suffix structures, strings

Check Transcription

brute force, data structures, hashing, strings

Martian Strings

string suffix structures, strings

Bill Total Value

expression parsing, implementation, strings

Another Wine Tasting Event

combinatorics, constructive algorithms, math, strings

Restoring IPv6

implementation, strings

Kefa and Watch

data structures, hashing, strings

Comments

dfs and similar, expression parsing, implementation, strings

Mike and Friends

data structures, string suffix structures, strings, trees

Making Genome in Berland

*special problem, dfs and similar, strings

Field of Wonders

implementation, strings

Sequence Formatting

implementation, strings