Prefix-Suffix Palindrome (Easy version)

hashing, string suffix structures, strings

Password

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

Prefix-Suffix Palindrome (Hard version)

binary search, greedy, hashing, string suffix structures, strings

Watto and Mechanism

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

Spy Syndrome 2

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

MUH and Cube Walls

string suffix structures, strings

Prefixes and Suffixes

dp, string suffix structures, strings, two pointers

Compress Words

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

Match & Catch

dp, string suffix structures, strings

Tavas and Malekas

greedy, hashing, string suffix structures, strings

Messenger

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

String

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

Om Nom and Necklace

hashing, string suffix structures, strings

Martian Strings

string suffix structures, strings

Deletion of Repeats

greedy, hashing, string suffix structures

Good Substrings

string suffix structures

Valera and Swaps

constructive algorithms, dsu, graphs, implementation, math, string suffix structures

String

string suffix structures

Morse Code

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

Forbidden Indices

dsu, string suffix structures, strings

Games on a CD

data structures, hashing, string suffix structures, strings

Frequency of String

hashing, string suffix structures, strings

Encoding

hashing, string suffix structures, strings

String Compression

dp, hashing, string suffix structures, strings

Three strings

data structures, dsu, string suffix structures, strings

Genetic engineering

dp, string suffix structures, trees

Fake News (hard)

string suffix structures

Bacterial Melee

brute force, combinatorics, dp, string suffix structures

You Are Given Some Strings...

brute force, string suffix structures, strings

Paper task

data structures, string suffix structures, strings

Liar

binary search, dp, hashing, string suffix structures

Indie Album

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

Ann and Half-Palindrome

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

Cyclical Quest

data structures, string suffix structures, strings

String Set Queries

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

And Yet Another Bracket Sequence

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

Have You Ever Heard About the Word?

greedy, hashing, string suffix structures, strings

Expensive Strings

string suffix structures, strings

Yet Another LCP Problem

data structures, string suffix structures

Fence

binary search, data structures, string suffix structures

k-substrings

binary search, hashing, string suffix structures

Mike and Friends

data structures, string suffix structures, strings, trees

Little Elephant and Strings

data structures, implementation, string suffix structures, two pointers

Good Substrings

string suffix structures

Xenia and String Problem

dp, hashing, implementation, string suffix structures, strings

Substrings in a String

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

Palindrome Partition

dp, string suffix structures, strings

Security

data structures, string suffix structures

Letters and Question Marks

bitmasks, dp, string suffix structures

Misha and LCP on Tree

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

String Journey

data structures, dp, string suffix structures

Upside Down

data structures, string suffix structures, strings, trees

Forensic Examination

data structures, string suffix structures

Reverses

dp, string suffix structures, strings

Cutting the Line

string suffix structures, strings

Cool Slogans

string suffix structures, strings

Arpa’s abnormal DNA and Mehrdad’s deep interest

data structures, string suffix structures

Asterisk Substrings

string suffix structures

Permutation Concatenation

string suffix structures

Ж-function

string suffix structures, strings

Speckled Band

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