Reorder the Array

combinatorics, data structures, math, sortings, two pointers

George and Round

brute force, greedy, two pointers

Inaccurate Subsequence Search

data structures, two pointers

Another Problem on Strings

binary search, brute force, dp, math, strings, two pointers

Complete the Word

greedy, two pointers

k-Amazing Numbers

binary search, data structures, implementation, two pointers

Minimize The Integer

greedy, two pointers

Haunted House

binary search, greedy, math, two pointers

Modulo Sum

combinatorics, data structures, dp, two pointers

Chocolate Bunny

constructive algorithms, interactive, math, two pointers

Kuroni and Simple Strings

constructive algorithms, greedy, strings, two pointers

PriceFixed

binary search, greedy, implementation, sortings, two pointers

Smilo and Monsters

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

Phoenix and Socks

greedy, sortings, two pointers

Xenia and Colorful Gems

binary search, greedy, math, sortings, two pointers

Tracking Segments

binary search, brute force, data structures, two pointers

Colorful Table

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

Monsters And Spells

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

Escape from Stones

constructive algorithms, data structures, implementation, two pointers

Building a Fence

dp, greedy, implementation, two pointers

Array Game

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

Three Blocks Palindrome (easy version)

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

Approximating a Constant Range

dp, implementation, two pointers

Physics Practical

binary search, dp, sortings, two pointers

String Transformation 1

dsu, graphs, greedy, sortings, strings, trees, two pointers

Count Triangles

binary search, implementation, math, two pointers

TV Subscriptions (Hard Version)

implementation, two pointers

Uniqueness

binary search, brute force, implementation, two pointers

Kirill And The Game

brute force, two pointers

Zigzags

brute force, combinatorics, data structures, math, two pointers

Cleaning the Phone

binary search, dp, sortings, two pointers

Brutality

greedy, sortings, two pointers

Complex Market Analysis

binary search, dp, implementation, number theory, schedules, two pointers

Binary String

binary search, greedy, strings, two pointers

RGB Substring (hard version)

data structures, dp, implementation, two pointers

Integers Have Friends

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

Coffee Break

binary search, data structures, greedy, two pointers

Close Tuples (hard version)

binary search, combinatorics, implementation, math, sortings, two pointers

Tokitsukaze and Discard Items

implementation, two pointers

Dances (Easy version)

binary search, greedy, two pointers

Hard Process

binary search, dp, two pointers

A Tale of Two Lands

binary search, sortings, two pointers

Swap Adjacent Elements

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

Vasya and Arrays

greedy, two pointers

Functions again

dp, two pointers

Yet Another Yet Another Task

data structures, dp, implementation, two pointers

MP3

sortings, two pointers

Longest k-Good Segment

binary search, data structures, two pointers

String Deletion

binary search, data structures, greedy, two pointers

Wrath

greedy, implementation, two pointers

Guess a number!

greedy, implementation, two pointers

Discrete Acceleration

binary search, dp, implementation, math, two pointers

To Add or Not to Add

binary search, sortings, two pointers

Prefixes and Suffixes

dp, string suffix structures, strings, two pointers

Maximum Product Strikes Back

brute force, implementation, math, two pointers

Heaters

greedy, two pointers

K-Dominant Character

binary search, implementation, two pointers

Ladder

dp, implementation, two pointers

Square-Free Division (easy version)

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

Neutral Tonality

constructive algorithms, greedy, sortings, two pointers

The Best Vacation

binary search, brute force, greedy, implementation, two pointers

Rudolf and k Bridges

binary search, data structures, dp, two pointers

Tandem Repeats?

brute force, strings, two pointers

Three Blocks Palindrome (hard version)

brute force, data structures, dp, two pointers

Eugeny and Play List

binary search, implementation, two pointers

Array Painting

constructive algorithms, greedy, two pointers

Correct Placement

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

Seating Arrangements (hard version)

data structures, greedy, implementation, sortings, two pointers

Quiz Master

binary search, math, number theory, sortings, two pointers

Two Platforms

binary search, dp, sortings, two pointers

USB vs. PS/2

greedy, implementation, sortings, two pointers

Same Count One

brute force, constructive algorithms, greedy, implementation, two pointers

Strings of Power

implementation, strings, two pointers

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

Born This Way

binary search, brute force, two pointers

Array

bitmasks, implementation, two pointers

Remove the Substring (hard version)

binary search, greedy, implementation, two pointers

Escape The Maze (easy version)

dfs and similar, greedy, shortest paths, trees, two pointers

Range = √Sum

binary search, brute force, constructive algorithms, math, two pointers

Letter Picking

constructive algorithms, dp, games, two pointers

Maximum Value

binary search, math, sortings, two pointers

The Party and Sweets

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

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

Ira and Flamenco

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

Boboniu Chats with Du

dp, greedy, sortings, two pointers

Game Master

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

An impassioned circulation of affection

brute force, dp, strings, two pointers

Alyona and Spreadsheet

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

A and B and Interesting Substrings

data structures, dp, two pointers

ATM and Students

binary search, data structures, two pointers

Shortest and Longest LIS

constructive algorithms, graphs, greedy, two pointers

Mr. Kitayuta, the Treasure Hunter

dfs and similar, dp, two pointers

Slime Escape

data structures, dp, greedy, two pointers

Beppa and SwerChat

two pointers

Binary Literature

constructive algorithms, greedy, implementation, strings, two pointers

Cyclic Rotation

constructive algorithms, greedy, implementation, two pointers

Voting

greedy, implementation, two pointers

Match Points

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