Registration System

data structures, hashing, implementation

Winner

hashing, implementation

Vitaliy and Pie

greedy, hashing

OR in Matrix

greedy, hashing, implementation

Password

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

Equivalent Strings

divide and conquer, hashing, sortings, strings

Bear and Three Musketeers

brute force, dfs and similar, graphs, hashing

Gargari and Bishops

greedy, hashing, implementation

Common Divisors

brute force, hashing, implementation, math, strings

Kostya the Sculptor

data structures, hashing

Watto and Mechanism

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

King's Path

dfs and similar, hashing, shortest paths

Tavas and Malekas

greedy, hashing, string suffix structures, strings

Queries for Number of Palindromes

dp, hashing, strings

Sasha and One More Name

constructive algorithms, hashing, strings

Palindromic characteristics

brute force, dp, hashing, strings

Felicity is Coming!

data structures, hashing, sortings, strings

New Year and Ancient Prophecy

hashing, strings

Palindrome Degree

hashing, strings

Ray Tracing

greedy, hashing, implementation, math, number theory

Fibonacci-ish

brute force, hashing, implementation, math

Palindrome Pairs

hashing, strings

Spy Syndrome 2

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

Sets

constructive algorithms, hashing, implementation

Petr#

brute force, data structures, hashing, strings

Correcting Mistakes

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

Two strings

binary search, hashing, two pointers

String

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

Messenger

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

Spelling Check

hashing, implementation, strings

Double Profiles

graphs, hashing, sortings

Om Nom and Necklace

hashing, string suffix structures, strings

Fedor and Essay

dfs and similar, dp, graphs, hashing, strings

Beaver

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

LIS of Sequence

data structures, dp, greedy, hashing, math

Bear and Polynomials

hashing, implementation, math

Kefa and Watch

data structures, hashing, strings

Test

hashing, strings

Tree-String Problem

dfs and similar, hashing, strings

President and Roads

dfs and similar, graphs, hashing, shortest paths

Check Transcription

brute force, hashing, strings

The Untended Antiquity

data structures, hashing

Sereja and Squares

binary search, data structures, hashing

Swapping Characters

brute force, hashing, implementation, strings

Good Substrings

hashing, strings

Isomorphic Strings

hashing, strings

Acyclic Organic Compounds

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

Counter Attack

data structures, dsu, graphs, hashing, sortings

Marbles

hashing, strings

Death Stars (medium)

hashing, strings

Encoding

hashing, string suffix structures, strings

Restoring the Expression

brute force, hashing, math

Peterson Polyglot

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

The Supersonic Rocket

geometry, hashing, strings

Labelling Cities

dfs and similar, graphs, hashing

Deletion of Repeats

greedy, hashing, string suffix structures

Ann and Books

data structures, flows, hashing

Cutting Jigsaw Puzzle

hashing, implementation

Frequency of String

hashing, string suffix structures, strings

Abbreviation

dp, hashing, strings

String Compression

dp, hashing, string suffix structures, strings

String Set Queries

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

DZY Loves Strings

binary search, hashing, strings, two pointers

Permutation

data structures, divide and conquer, hashing

Games on a CD

data structures, hashing, string suffix structures, strings

Fractal Detector

dp, hashing

Don't fear, DravDe is kind

binary search, data structures, dp, hashing

Two Permutations

data structures, hashing, strings

Liar

binary search, dp, hashing, string suffix structures

Tricky and Clever Password

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

Superhero's Job

dfs and similar, dp, hashing, math, number theory

Largest Submatrix 3

dp, hashing

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

Harry Potter and the Sorting Hat

brute force, dfs and similar, hashing

And Yet Another Bracket Sequence

data structures, hashing, string suffix structures, strings

Have You Ever Heard About the Word?

greedy, hashing, string suffix structures, strings

Simplified Nonogram

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

Space Isaac

hashing, number theory

The Next Good String

data structures, greedy, hashing, strings

Berland Local Positioning System

constructive algorithms, greedy, hashing, implementation

Polycarpus is Looking for Good Substrings

bitmasks, hashing, implementation

String Transformation

hashing, strings

Berland SU Computer Network

dfs and similar, hashing, trees

Andrew and Chemistry

hashing, trees

k-substrings

binary search, hashing, string suffix structures

Timofey and a flat tree

data structures, graphs, hashing, shortest paths, trees

Xenia and String Problem

dp, hashing, implementation, string suffix structures, strings

Looking for Owls

binary search, geometry, hashing, sortings

Misha and LCP on Tree

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

Puzzle Lover

dp, hashing, strings

Rap God

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

Tree of Life (medium)

constructive algorithms, hashing, trees

Speckled Band

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

Palindromic Magic

data structures, hashing, strings