RGB Substring (hard version)

data structures, dp, implementation, two pointers

Program

data structures, dp, implementation, strings

Hits Different

data structures, dp, implementation, math

Geometric Progression

binary search, data structures, dp

Integers Have Friends

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

Coffee Break

binary search, data structures, greedy, two pointers

Vasiliy's Multiset

binary search, bitmasks, data structures, trees

Hyperset

brute force, data structures, implementation

Welfare State

binary search, brute force, data structures, sortings

Planar Reflections

brute force, data structures, dp

Playlist

brute force, data structures, sortings

Replacement

constructive algorithms, data structures, implementation

Thor

brute force, data structures, implementation

Yet Another Yet Another Task

data structures, dp, implementation, two pointers

Divide and Summarize

binary search, brute force, data structures, divide and conquer, implementation, sortings

Cd and pwd commands

*special problem, data structures, implementation

Destroying Array

data structures, dsu

Longest k-Good Segment

binary search, data structures, two pointers

String Deletion

binary search, data structures, greedy, two pointers

Photo to Remember

*special problem, data structures, dp, implementation

MEX and Increments

constructive algorithms, data structures, dp, greedy, implementation, math, sortings

Compression and Expansion

brute force, data structures, greedy, implementation, trees

Color with Occurrences

brute force, data structures, dp, greedy, strings

The Festive Evening

data structures, implementation

Book

binary search, brute force, data structures, dp, graphs, implementation, sortings

Training Session

combinatorics, data structures, geometry, implementation, math

T-shirt buying

data structures, implementation

XOR on Segment

bitmasks, data structures

Marvolo Gaunt's Ring

brute force, data structures, dp

Sonya and Queries

data structures, implementation

Multiplicity

data structures, dp, implementation, math, number theory

Monoblock

combinatorics, data structures, implementation, math

Mind Control

brute force, data structures, implementation

Multiset

binary search, data structures

Balance (Easy version)

brute force, data structures, implementation, number theory

Skier

data structures, implementation

Mike and Feet

binary search, data structures, dp, dsu

Bus of Characters

data structures, greedy, implementation

You Are So Beautiful

data structures

Tokitsukaze and Strange Inequality

brute force, data structures, dp

Minimum Array

binary search, data structures, greedy

Circular RMQ

data structures

Rorororobot

binary search, data structures, greedy, math

Square-Free Division (easy version)

data structures, dp, greedy, math, number theory, two pointers

Mentors

binary search, data structures, implementation

Three Blocks Palindrome (hard version)

brute force, data structures, dp, two pointers

Equate Multisets

constructive algorithms, data structures, greedy, math, number theory

Rudolf and k Bridges

binary search, data structures, dp, two pointers

Two TVs

data structures, greedy, sortings

Maximum Absurdity

data structures, dp, implementation

The Child and Sequence

data structures, math

Recursive Queries

binary search, data structures, dfs and similar

Replace the Numbers

constructive algorithms, data structures, dsu, implementation

XOR and Favorite Number

data structures

Pekora and Trampoline

brute force, data structures, dp, greedy, implementation

Correct Placement

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

Seating Arrangements (hard version)

data structures, greedy, implementation, sortings, two pointers

Knowledge Cards

constructive algorithms, data structures

Ant colony

data structures, math, number theory

Berry Jam

data structures, dp, greedy, implementation

Xenia and Tree

data structures, divide and conquer, trees

Replace To Make Regular Bracket Sequence

data structures, expression parsing, math

Character Blocking

data structures, hashing, implementation

Playoff Tournament

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

Reverse Madness

data structures, greedy

Boris and His Amazing Haircut

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

Berpizza

data structures, implementation

Minimize the error

data structures, greedy, sortings

New Reform

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

Rescue Nibel!

combinatorics, data structures, sortings

Rating System

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

Yet Another Monster Killing Problem

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

Heap Operations

constructive algorithms, data structures, greedy

Producing Snow

binary search, data structures

Exam in BerSU (hard version)

brute force, data structures, greedy, math

Path Prefixes

binary search, data structures, dfs and similar, trees

Gambling

data structures, dp, greedy, math

Bubble Sort Graph

binary search, data structures, dp

Cross Coloring

data structures, implementation, math

Messenger in MAC

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

Minimum spanning tree for each edge

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

Cat Party (Hard Edition)

data structures, implementation

Omkar and Determination

data structures, dp

Order Book

data structures, greedy, implementation, sortings

Cat Party (Easy Edition)

data structures, implementation

Painting the Array I

constructive algorithms, data structures, dp, greedy, implementation

Array Division

binary search, data structures, implementation

Lunar New Year and Food Ordering

data structures, implementation

Fools and Roads

data structures, dfs and similar, trees

Dima and Staircase

data structures, implementation

Beautiful Array

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

Valiant's New Map

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

Vasya and Basketball

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

Merge Equals

data structures, implementation

Glass Carving

binary search, data structures, implementation

The Treasure of The Segments

binary search, data structures, greedy

Max Median

binary search, data structures, dp

Ira and Flamenco

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

Okabe and Boxes

data structures, greedy, trees

Average Sleep Time

data structures, implementation, math