Restore a Number

brute force, constructive algorithms, strings

Correct Bracket Sequence Editor

data structures, dsu, strings

Codeword

combinatorics, strings

Reberland Linguistics

dp, implementation, strings

Beautiful Subarrays

data structures, divide and conquer, strings, trees

Simple Strings

dp, greedy, strings

Paper task

data structures, string suffix structures, strings

Bear and Compressing

brute force, dfs and similar, dp, strings

Intellectual Inquiry

dp, greedy, strings

Hostname Aliases

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

Making Genome in Berland

*special problem, dfs and similar, strings

Spy Syndrome 2

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

The Smallest String Concatenation

sortings, strings

Messenger

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

Famil Door and Brackets

dp, strings

Bear and String Distance

greedy, strings

War of the Corporations

constructive algorithms, greedy, strings

Xors on Segments

data structures, strings, trees

Expensive Strings

string suffix structures, strings

Comparing Two Long Integers

implementation, strings

Running Track

dp, greedy, strings, trees

Puzzle Lover

dp, hashing, strings

The Text Splitting

brute force, implementation, strings

New Year and Ancient Prophecy

dp, hashing, strings

Alphabet Permutations

data structures, strings

Hamming Distance Sum

combinatorics, strings

Marbles

hashing, strings

Acyclic Organic Compounds

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

Make Palindrome

constructive algorithms, greedy, strings

Extract Numbers

implementation, strings

Queries on a String

implementation, strings

Wilbur and Strings

dfs and similar, dp, graphs, strings

Cutting the Line

string suffix structures, strings

Rebranding

implementation, strings

Birthday

graph matchings, strings

Duff is Mad

data structures, strings

Digits of Number Pi

dp, implementation, strings

Marina and Vasya

constructive algorithms, greedy, strings

Kefa and Watch

data structures, hashing, strings

Matching Names

dfs and similar, strings, trees

Equivalent Strings

divide and conquer, hashing, sortings, strings

A Simple Task

data structures, sortings, strings

Ann and Half-Palindrome

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

Ohana Cleans Up

brute force, greedy, strings

Kyoya and Photobooks

brute force, math, strings

Vanya and Brackets

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

ZgukistringZ

brute force, constructive algorithms, implementation, strings

Two Substrings

brute force, dp, greedy, implementation, strings

Face Detection

implementation, strings

Mike and Fax

brute force, implementation, strings

Mike and Friends

data structures, string suffix structures, strings, trees

Set of Strings

implementation, strings

Tavas and Malekas

greedy, hashing, string suffix structures, strings

Encoding

hashing, string suffix structures, strings

Correcting Mistakes

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

Work Group

dfs and similar, dp, graphs, strings, trees

Om Nom and Necklace

hashing, string suffix structures, strings

Pasha and String

constructive algorithms, greedy, math, strings

Vitaliy and Pie

greedy, hashing, strings

And Yet Another Bracket Sequence

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

DNA Alignment

math, strings

Pangram

implementation, strings

Tanya and Postcard

greedy, implementation, strings

Vitaly and Strings

constructive algorithms, strings

Watto and Mechanism

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

Pretty Song

math, strings

Anton and currency you all know

greedy, math, strings

Mr. Kitayuta's Gift

combinatorics, dp, matrices, strings

Mr. Kitayuta's Gift

brute force, implementation, strings

Misha and Changing Handles

data structures, dsu, strings

Lecture

implementation, strings

Obsessive String

dp, strings

Hacking Cypher

brute force, math, number theory, strings

Dreamoon and Binary

dp, strings

Dreamoon and Strings

dp, strings

MUH and Cube Walls

string suffix structures, strings

Fedor and Essay

dfs and similar, dp, graphs, hashing, strings

No to Palindromes!

greedy, strings

Appleman and a Game

binary search, shortest paths, strings

A Lot of Games

dfs and similar, dp, games, implementation, strings, trees

Three strings

data structures, dsu, string suffix structures, strings

Eevee

brute force, implementation, strings

Suffix Structures

implementation, strings

DZY Loves Strings

binary search, hashing, strings, two pointers

Kolya and Tandem Repeat

brute force, implementation, strings

Prefixes and Suffixes

dp, string suffix structures, strings, two pointers

Match & Catch

dp, string suffix structures, strings

Pattern

implementation, strings

Diverse Substrings

dp, strings, two pointers

Bear and Strings

brute force, greedy, implementation, math, strings

Dima and Text Messages

brute force, strings

Xenia and String Problem

dp, hashing, implementation, string suffix structures, strings

Lucky Common Subsequence

dp, strings

Suffix Subgroup

*special problem, strings

Helpful Maths

greedy, implementation, sortings, strings

Have You Ever Heard About the Word?

greedy, hashing, string suffix structures, strings

Strings of Power

implementation, strings, two pointers

Good Substrings

hashing, strings

Sereja and Periods

binary search, dfs and similar, strings

Whose sentence is it?

implementation, strings