Yet Another Array Counting Problem

binary search, data structures, divide and conquer, dp, flows, math, trees

Selling Souvenirs

binary search, dp, greedy, ternary search

Little Elephant and LCM

binary search, combinatorics, dp, math

Valuable Paper

binary search, flows, graph matchings, graphs

Microtransactions (easy version)

binary search, greedy

Range Sorting (Hard Version)

binary search, data structures, dp, greedy

Excellent Arrays

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

Degenerate Matrix

binary search, math

Rock Is Push

binary search, dp

Red-Blue Operations (Hard Version)

binary search, constructive algorithms, greedy, implementation, math

Three Base Stations

binary search, greedy

Stressful Training

binary search, greedy

Chain Reaction

binary search, data structures, dsu, greedy, implementation, math, number theory

Water Taps

binary search, greedy, sortings

Characteristics of Rectangles

binary search, bitmasks, brute force, implementation, sortings

The hat

binary search, interactive

Photo Processing

binary search, dp

Castle Defense

binary search, data structures, greedy, two pointers

Sum of Medians

binary search, brute force, data structures, implementation

Elongated Matrix

binary search, bitmasks, brute force, dp, graphs

Explosions?

binary search, data structures, dp, greedy, math

Mr. Bender and Square

binary search, implementation, math

Charming Meals

binary search, brute force, greedy, sortings

Omkar and Landslide

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

Card Game Again

binary search, data structures, number theory, two pointers

Serge and Dining Room

binary search, data structures, graph matchings, greedy, implementation, math, trees

Dog Snacks

binary search, dfs and similar, dp, greedy, trees

Preparing for the Contest

binary search, data structures, greedy, sortings

Mark and Professor Koro

binary search, bitmasks, brute force, combinatorics, data structures, greedy

The Art of Dealing with ATM

binary search, sortings

High Cry

binary search, bitmasks, combinatorics, data structures, divide and conquer

Two chandeliers

binary search, brute force, chinese remainder theorem, math, number theory

Infinite Inversions

binary search, data structures, implementation, sortings, trees

Stripe 2

binary search, dp, sortings

Irrigation

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

Microtransactions (hard version)

binary search, greedy, implementation

Valera and Queries

binary search, data structures

LCM Sum (easy version)

binary search, brute force, combinatorics, math, number theory, two pointers

Ithea Plays With Chtholly

binary search, constructive algorithms, games, greedy, interactive

The way home

binary search, data structures, dp, graphs, greedy, shortest paths, sortings

MEX of LCM

binary search, data structures, implementation, math, number theory

Editorial for Two

binary search, data structures, greedy, implementation

Fly, freebies, fly!

binary search, brute force, implementation

notepad.exe

binary search, constructive algorithms, greedy, interactive

Partition Game

binary search, data structures, divide and conquer, dp

Kyoya and Permutation

binary search, combinatorics, constructive algorithms, greedy, implementation, math

Random Task

binary search, bitmasks, combinatorics, dp, math

Bear and Tower of Cubes

binary search, dp, greedy

Complicated Computations

binary search, data structures, two pointers

Yaroslav and Time

binary search, graphs, shortest paths

Cute Sequences

binary search, brute force, greedy, math

Olympiad

binary search, greedy, sortings, two pointers

Fedor and coupons

binary search, data structures, greedy, sortings

Hemose in ICPC ?

binary search, dfs and similar, implementation, interactive, math, number theory, trees

Fruit Sequences

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

Sign on Fence

binary search, constructive algorithms, data structures

Petya, Petya, Petr, and Palindromes

binary search, brute force, data structures, two pointers

Skills

binary search, brute force, dp, greedy, sortings, two pointers

Anya and the Mysterious String

binary search, data structures

Resource Distribution

binary search, implementation, sortings

Two Types of Spells

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

Privatization of Roads in Treeland

binary search, constructive algorithms, dfs and similar, graphs, greedy, trees

Cartons of milk

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

Domino Principle

binary search, data structures, sortings

Weights Division (hard version)

binary search, dfs and similar, greedy, sortings, trees, two pointers

Multi-Colored Segments

binary search, data structures, math, sortings

Hack it!

binary search, constructive algorithms, math

Sand Fortress

binary search, constructive algorithms, math

Unusual Minesweeper

binary search, dfs and similar, dsu, greedy, sortings

Subway Pursuit

binary search, interactive, probabilities

Army Creation

binary search, data structures

Treasure Hunting

binary search, dp, greedy, implementation

Andrew and Taxi

binary search, dfs and similar, graphs

Asterism (Hard Version)

binary search, combinatorics, dp, math, number theory, sortings

Anonymity Is Important

binary search, brute force, data structures, dsu, greedy, sortings

Delivery Bears

binary search, flows, graphs

Monitor

binary search, data structures

Rain

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

Two strings

binary search, hashing, strings, two pointers

Handshakes

binary search, constructive algorithms, data structures, greedy

Qpwoeirut and Vertices

binary search, data structures, dfs and similar, divide and conquer, dsu, greedy, trees

Voting (Hard Version)

binary search, data structures, greedy

Digits Sequence (Hard Edition)

binary search, divide and conquer, implementation

MEX Queries

binary search, data structures, trees

Sereja ans Anagrams

binary search, data structures

Making Sequences is Fun

binary search, implementation, math

Learning to Paint

binary search, data structures, dfs and similar, dp, greedy, implementation, sortings

Cycles

binary search, constructive algorithms, graphs, greedy

Sheikh (Hard Version)

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

Sad powers

binary search, math, number theory

Pinball

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

Multicolored Markers

binary search, brute force, math, number theory

Buses

binary search, data structures, dp

Fixed Point Removal

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

Banana

binary search, constructive algorithms, greedy

Vika and Bonuses

binary search, brute force, math, ternary search

Leaving Auction

binary search, data structures

Range Deleting

binary search, combinatorics, data structures, two pointers

Missing Numbers

binary search, constructive algorithms, greedy, math, number theory

Nature Reserve

binary search, geometry, ternary search