Air Conditioner

dp, greedy, implementation, sortings, two pointers

Irreducible Anagrams

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

Delete a Segment

brute force, constructive algorithms, data structures, dp, graphs, sortings, trees, two pointers

Petya and Exam

greedy, sortings, two pointers

Two Bracket Sequences

dp, strings, two pointers

Decreasing Debts

constructive algorithms, data structures, graphs, greedy, implementation, math, two pointers

Beautiful Numbers

data structures, implementation, math, two pointers

Yet Another Monster Killing Problem

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

Dominated Subarray

greedy, implementation, sortings, strings, two pointers

Send Boxes to Alice (Hard Version)

constructive algorithms, greedy, math, number theory, ternary search, two pointers

Send Boxes to Alice (Easy Version)

constructive algorithms, greedy, math, number theory, ternary search, two pointers

Songwriter

greedy, two pointers

Minimize The Integer

greedy, two pointers

Broken Keyboard

brute force, strings, two pointers

Discarding Game

dp, greedy, two pointers

Minimizing Difference

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

Balanced Tunnel

data structures, sortings, two pointers

TV Subscriptions (Hard Version)

implementation, two pointers

Sequence Sorting

dp, greedy, two pointers

Into Blocks (easy version)

data structures, dsu, greedy, implementation, two pointers

Uniqueness

binary search, brute force, implementation, two pointers

Remove the Substring (hard version)

binary search, greedy, implementation, two pointers

White Lines

brute force, data structures, dp, implementation, two pointers

MP3

sortings, two pointers

RGB Substring (hard version)

data structures, dp, implementation, two pointers

OpenStreetMap

data structures, two pointers

Crossword Expert

combinatorics, dp, number theory, probabilities, two pointers

Tokitsukaze and Strange Rectangle

data structures, divide and conquer, sortings, two pointers

Tokitsukaze and Discard Items

implementation, two pointers

Count Pairs

math, matrices, number theory, two pointers

Irrigation

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

Yet Another Partiton Problem

data structures, divide and conquer, dp, geometry, two pointers

Good Triple

brute force, two pointers

Range Deleting

binary search, combinatorics, data structures, two pointers

A Tale of Two Lands

binary search, sortings, two pointers

The Party and Sweets

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

Maximum Balanced Circle

constructive algorithms, dp, greedy, two pointers

Special Segments of Permutation

data structures, divide and conquer, dsu, two pointers

Match Points

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

Earth Wind and Fire

constructive algorithms, greedy, math, sortings, two pointers

Born This Way

binary search, brute force, two pointers

K Balanced Teams

dp, sortings, two pointers

Balanced Team

sortings, two pointers

Most Dangerous Shark

data structures, dp, two pointers

Diana and Liana

greedy, implementation, two pointers

Brutality

greedy, sortings, two pointers

Vasya and Robot

binary search, two pointers

Heaters

greedy, two pointers

Maximum Subrectangle

binary search, implementation, two pointers

The Tower is Going Home

binary search, two pointers

Mysterious Crime

brute force, combinatorics, math, meet-in-the-middle, two pointers

Petya and Array

data structures, divide and conquer, two pointers

Glider

binary search, data structures, two pointers

Coffee Break

binary search, data structures, greedy, two pointers

Vasya and Arrays

greedy, two pointers

Intervals of Intervals

binary search, data structures, two pointers

Reorder the Array

combinatorics, data structures, math, sortings, two pointers

Three Parts of the Array

binary search, data structures, two pointers

A Shade of Moonlight

binary search, geometry, math, sortings, two pointers

Pencils and Boxes

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

Letters

binary search, implementation, two pointers

Single-use Stones

binary search, flows, greedy, two pointers

Lecture Sleep

data structures, dp, implementation, two pointers

Lightsabers (medium)

binary search, two pointers

Castle Defense

binary search, data structures, greedy, two pointers

Maximize!

binary search, greedy, ternary search, two pointers

Convenient For Everybody

binary search, two pointers

Three-level Laser

binary search, greedy, two pointers

Swap Adjacent Elements

dfs and similar, greedy, math, sortings, two pointers

Prime Gift

binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers

Bipartite Segments

binary search, data structures, dfs and similar, dsu, graphs, two pointers

Segments Removal

data structures, dsu, flows, implementation, two pointers

XK Segments

binary search, math, sortings, two pointers

Wrath

greedy, implementation, two pointers

K-Dominant Character

binary search, implementation, two pointers

Ratings and Reality Shows

data structures, two pointers

Sorting the Coins

dsu, implementation, sortings, two pointers

Strange Game On Matrix

greedy, two pointers

Jury Meeting

greedy, sortings, two pointers

Rooter's Song

constructive algorithms, data structures, geometry, implementation, sortings, two pointers

Random Query

data structures, math, probabilities, two pointers

Kirill And The Game

brute force, two pointers

The Bakery

binary search, data structures, divide and conquer, dp, two pointers

Bamboo Partition

brute force, data structures, implementation, math, number theory, sortings, two pointers

Card Game Again

binary search, data structures, number theory, two pointers

An impassioned circulation of affection

brute force, dp, strings, two pointers

Aquarium decoration

data structures, greedy, two pointers

Functions again

dp, two pointers

Intranet of Buses

binary search, geometry, implementation, two pointers

Alyona and Spreadsheet

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

Significant Cups

*special problem, binary search, data structures, two pointers

Bear and Isomorphic Points

geometry, two pointers

News About Credit

*special problem, greedy, two pointers

Cartons of milk

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

Two strings

binary search, hashing, strings, two pointers

USB vs. PS/2

greedy, implementation, sortings, two pointers

Voting

greedy, implementation, two pointers

Santa Claus and Tangerines

binary search, data structures, greedy, two pointers

Music in Car

data structures, greedy, two pointers

Hongcow Masters the Cyclic Shift

strings, two pointers