Balanced Removals (Harder)

constructive algorithms, divide and conquer, greedy, implementation, sortings

Balanced Tunnel

data structures, sortings, two pointers

Minimizing Difference

binary search, constructive algorithms, greedy, sortings, ternary search, two pointers

Adilbek and the Watering System

data structures, greedy, sortings

Kill `Em All

greedy, sortings

Paint the Tree

dp, sortings, trees

Shooting

greedy, implementation, sortings

Choose a Square

binary search, data structures, sortings

Cards

implementation, sortings, strings

Rotate Columns (hard version)

bitmasks, dp, greedy, sortings

Rotate Columns (easy version)

bitmasks, brute force, dp, greedy, sortings

Ice Cream

*special problem, greedy, sortings

Employment

greedy, sortings

Petya and Construction Set

constructive algorithms, graphs, math, sortings, trees

Path Queries

divide and conquer, dsu, graphs, sortings, trees

Equalizing by Division (hard version)

brute force, math, sortings

Choose Two Numbers

math, sortings

Boxers

greedy, sortings

Maximum Median

binary search, greedy, math, sortings

Matching vs Independent Set

constructive algorithms, graphs, greedy, sortings

Welfare State

binary search, brute force, data structures, sortings

MP3

sortings, two pointers

K-th Path

brute force, constructive algorithms, shortest paths, sortings

Culture Code

binary search, combinatorics, data structures, dp, shortest paths, sortings

Array Splitting

greedy, sortings

DIY Wooden Ladder

greedy, math, sortings

Geometers Anonymous Club

data structures, geometry, math, sortings

Count The Rectangles

bitmasks, brute force, data structures, geometry, sortings

Tokitsukaze and Strange Rectangle

data structures, divide and conquer, sortings, two pointers

The Doctor Meets Vader (Medium)

flows, graph matchings, graphs, shortest paths, sortings

The Doctor Meets Vader (Easy)

binary search, sortings

Number Circle

greedy, math, sortings

Subarray Sorting

data structures, sortings

Candy Box (hard version)

greedy, implementation, sortings

Topforces Strikes Back

brute force, math, sortings

Candy Box (easy version)

greedy, sortings

Exam in BerSU (easy version)

greedy, sortings

A Story of One Country (Hard)

brute force, greedy, sortings

A Story of One Country (Easy)

brute force, divide and conquer, sortings

Irrigation

binary search, data structures, implementation, sortings, trees, two pointers

Destroy it!

dp, implementation, sortings

Recover it!

dfs and similar, graphs, greedy, number theory, sortings

Array Splitting

greedy, sortings

Ehab Is an Odd Person

sortings

Ehab Fails to Be Thanos

constructive algorithms, greedy, sortings

Earth Wind and Fire

constructive algorithms, greedy, math, sortings, two pointers

Dirty Deeds Done Dirt Cheap

greedy, sortings

Crazy Diamond

constructive algorithms, sortings

A Tale of Two Lands

binary search, sortings, two pointers

Scalar Queries

combinatorics, data structures, math, sortings

Two Arrays and Sum of Functions

greedy, math, sortings

Polycarp Training

data structures, greedy, sortings

Permutation recovery

constructive algorithms, data structures, dfs and similar, graphs, greedy, math, sortings

The Party and Sweets

binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers

Match Points

binary search, greedy, sortings, ternary search, two pointers

Ugly Pairs

dfs and similar, greedy, implementation, sortings, strings

Reverse a Substring

implementation, sortings, strings

Stas and the Queue at the Buffet

greedy, math, sortings

Shovels Shop

dp, greedy, sortings

Two Teams

data structures, implementation, sortings

Frets On Fire

binary search, sortings

Alyona and a Narrow Fridge

binary search, flows, greedy, sortings

Two Shuffled Sequences

constructive algorithms, sortings

Parity Alternated Deletions

greedy, implementation, sortings

Playlist

brute force, data structures, sortings

Nastya Is Transposing Matrices

constructive algorithms, sortings

Skyscrapers

implementation, sortings

K Balanced Teams

dp, sortings, two pointers

Balanced Team

sortings, two pointers

Discounts

greedy, sortings

Technogoblet of Fire

implementation, sortings

Morse Code

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

Birthday

binary search, greedy, sortings

Emotes

greedy, math, sortings

Yet Another Array Partitioning Task

constructive algorithms, greedy, sortings

Magic Stones

constructive algorithms, math, sortings

Tape

greedy, sortings

Lunar New Year and Number Division

greedy, implementation, math, sortings

Vasya and Endless Credits

dp, flows, graph matchings, graphs, sortings

Brutality

greedy, sortings, two pointers

Division and Union

sortings

Monotonic Renumeration

combinatorics, sortings

Array K-Coloring

greedy, sortings

New Year and the Acquaintance Estimation

binary search, data structures, graphs, greedy, implementation, math, sortings

Teams Forming

sortings

Maximum Distance

dsu, graphs, shortest paths, sortings

Letters Rearranging

constructive algorithms, greedy, sortings, strings

Ehab and subtraction

implementation, sortings

Decorate Apple Tree

constructive algorithms, dfs and similar, dp, graphs, greedy, sortings, trees

Pick Heroes

greedy, implementation, interactive, sortings

Katya and Segments Sets

data structures, interactive, sortings

TV Shows

data structures, greedy, implementation, sortings

Views Matter

greedy, implementation, sortings

Thematic Contests

greedy, sortings

Cutting Out

binary search, sortings

Taxi drivers and Lyft

implementation, sortings

Train Hard, Win Easy

constructive algorithms, greedy, math, sortings

Leaf Sets

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

Heist

greedy, implementation, sortings

Gambling

greedy, sortings