Array Stabilization (GCD version)

binary search, brute force, data structures, divide and conquer, number theory, two pointers

Difference Array

brute force, data structures, implementation, sortings

XOR Construction

bitmasks, constructive algorithms, data structures, math, string suffix structures, trees

A Simple Task

data structures, sortings, strings

Years

data structures, sortings

Weights Division (easy version)

data structures, dfs and similar, greedy, trees

Bear and Blocks

binary search, data structures, dp, math

Petya and Array

data structures, divide and conquer, two pointers

Molly's Chemicals

binary search, brute force, data structures, implementation, math

Connected Components?

data structures, dfs and similar, dsu, graphs

Glider

binary search, data structures, two pointers

Buying gifts

data structures, greedy, sortings

Multiple Testcases

binary search, constructive algorithms, data structures, greedy, sortings, two pointers

Fixed Prefix Permutations

binary search, bitmasks, data structures, hashing, math, sortings

Slimes

binary search, constructive algorithms, data structures, greedy, two pointers

Anya and Smartphone

constructive algorithms, data structures, implementation

Cosmic Tables

data structures, implementation

Lorenzo Von Matterhorn

brute force, data structures, implementation, trees

Binary Numbers AND Sum

data structures, implementation, math

Slime Escape

data structures, dp, greedy, two pointers

Cow and Fields

binary search, data structures, dfs and similar, graphs, greedy, shortest paths, sortings

Two Teams

data structures, implementation, sortings

Present

binary search, data structures, greedy

Blood Cousins

binary search, data structures, dfs and similar, trees

Propagating tree

data structures, dfs and similar, trees

Captain Flint and Treasure

data structures, dfs and similar, graphs, greedy, implementation, trees

Optimal Subsequences (Easy Version)

data structures, greedy

Interesting Array

constructive algorithms, data structures, trees

Skyscrapers (hard version)

data structures, dp, greedy

String Reversal

data structures, greedy, strings

Two Hundred Twenty One (easy version)

data structures, dp, math

Integral Array

brute force, constructive algorithms, data structures, math

ATM and Students

binary search, data structures, two pointers

Not Equal on a Segment

data structures, implementation

A and B and Lecture Rooms

binary search, data structures, dfs and similar, dp, trees

Tree and Queries

data structures, dfs and similar, trees

SUM and REPLACE

brute force, data structures, dsu, number theory

A and B and Interesting Substrings

data structures, dp, two pointers

Minimal string

data structures, greedy, strings

Alyona and Spreadsheet

binary search, data structures, dp, greedy, implementation, two pointers

Berland Fair

binary search, brute force, data structures, greedy

Shurikens

data structures, greedy, implementation

Matrix Cascade

brute force, constructive algorithms, data structures, dp, greedy, math

Array Optimization by Deque

data structures, greedy

Lexicographically Largest

binary search, constructive algorithms, data structures, greedy, sortings

Game Master

data structures, dfs and similar, dp, graphs, greedy, two pointers

Covered Points Count

data structures, implementation, sortings

Cows and Sequence

constructive algorithms, data structures, implementation

Watto and Mechanism

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

Magic Triples (Easy Version)

brute force, data structures, math, number theory

Queue

binary search, data structures

Andrey and Escape from Capygrad

binary search, data structures, dp, dsu, greedy, sortings

Okabe and Boxes

data structures, greedy, trees

Average Sleep Time

data structures, implementation, math

Glass Carving

binary search, data structures, implementation

Merge Equals

data structures, implementation

Vasya and Basketball

binary search, brute force, data structures, implementation, sortings, two pointers

Dima and Staircase

data structures, implementation

The Treasure of The Segments

binary search, data structures, greedy

Lunar New Year and Food Ordering

data structures, implementation

Beautiful Array

brute force, data structures, divide and conquer, dp, greedy

Ira and Flamenco

combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers

Valiant's New Map

binary search, brute force, data structures, dp, two pointers

Max Median

binary search, data structures, dp

Array Division

binary search, data structures, implementation

Fools and Roads

data structures, dfs and similar, trees

Painting the Array I

constructive algorithms, data structures, dp, greedy, implementation

Order Book

data structures, greedy, implementation, sortings

Omkar and Determination

data structures, dp

Cat Party (Easy Edition)

data structures, implementation

Minimum spanning tree for each edge

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

Cross Coloring

data structures, implementation, math

Bubble Sort Graph

binary search, data structures, dp

Gambling

data structures, dp, greedy, math

Cat Party (Hard Edition)

data structures, implementation

Messenger in MAC

binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings

Path Prefixes

binary search, data structures, dfs and similar, trees

Exam in BerSU (hard version)

brute force, data structures, greedy, math

Producing Snow

binary search, data structures

Yet Another Monster Killing Problem

binary search, data structures, dp, greedy, sortings, two pointers

Heap Operations

constructive algorithms, data structures, greedy

New Reform

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

Rating System

binary search, brute force, data structures, dp, dsu, greedy, math, two pointers

Rescue Nibel!

combinatorics, data structures, sortings

Minimize the error

data structures, greedy, sortings

Berpizza

data structures, implementation

Playoff Tournament

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

Boris and His Amazing Haircut

constructive algorithms, data structures, dp, dsu, greedy, sortings

Character Blocking

data structures, hashing, implementation

Reverse Madness

data structures, greedy

Berry Jam

data structures, dp, greedy, implementation

Replace To Make Regular Bracket Sequence

data structures, expression parsing, math

Xenia and Tree

data structures, divide and conquer, trees

Seating Arrangements (hard version)

data structures, greedy, implementation, sortings, two pointers

Knowledge Cards

constructive algorithms, data structures

Ant colony

data structures, math, number theory

Pekora and Trampoline

brute force, data structures, dp, greedy, implementation

Correct Placement

binary search, data structures, dp, sortings, two pointers

Replace the Numbers

constructive algorithms, data structures, dsu, implementation

Recursive Queries

binary search, data structures, dfs and similar