Quests

binary search, greedy, sortings

Binary Inversions

data structures, greedy, math

Atilla's Favorite Problem

greedy, implementation, strings

Restore the Permutation

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

All Possible Digits

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

Thermostat

greedy, math, shortest paths

Almost All Multiples

greedy, number theory

Kevin and Permutation

constructive algorithms, greedy, math

Technical Support

greedy

N Machines

binary search, brute force, greedy

Make Nonzero Sum (hard version)

constructive algorithms, dp, greedy

Make Nonzero Sum (easy version)

constructive algorithms, dp, greedy

Bracket Cost

binary search, data structures, divide and conquer, dp, greedy, strings

Maximum Substring

brute force, greedy, implementation

Number Game

binary search, data structures, games, greedy, implementation

Death's Blessing

greedy

Cowardly Rooks

greedy, implementation

Zero-Sum Prefixes

brute force, data structures, dp, greedy, implementation

Two Groups

constructive algorithms, greedy

Paths on the Tree

dfs and similar, dp, greedy, sortings, trees

Permutation Operations

constructive algorithms, greedy, implementation, math

Rebellion

constructive algorithms, greedy, two pointers

Maxmina

constructive algorithms, greedy

Divisibility by 2^n

greedy, math, sortings

Number Replacement

greedy, implementation

Problem with Random Tests

brute force, dp, greedy, probabilities

Save the Magazines

constructive algorithms, dp, greedy

Permutation Value

constructive algorithms, greedy

Orray

bitmasks, brute force, greedy, math, sortings

Smaller

constructive algorithms, greedy, strings

Scuza

binary search, greedy, math

Coprime

brute force, greedy, number theory

Increasing

greedy, implementation, sortings

Minimize the Thickness

brute force, greedy, math, two pointers

Hanging Hearts

constructive algorithms, data structures, dfs and similar, dp, greedy, trees

Bricks and Bags

constructive algorithms, games, greedy, sortings

Jumbo Extra Cheese 2

geometry, greedy, sortings

Reset K Edges

binary search, data structures, dfs and similar, graphs, greedy, trees

Array Recovery

constructive algorithms, greedy, math

Anti-Increasing Addicts

constructive algorithms, dp, greedy, math

Connectivity Addicts

constructive algorithms, dsu, graphs, greedy, interactive, shortest paths, trees

Even Number Addicts

dp, games, greedy, math

Prefix Sum Addicts

constructive algorithms, greedy, math, sortings

Glory Addicts

greedy, implementation, sortings

Ela and the Wiring Wizard

brute force, dp, graphs, greedy, implementation, shortest paths

Ela Sorting Books

greedy, implementation, strings

Swap and Take

dp, greedy

Equal Binary Subsequences

constructive algorithms, geometry, greedy, implementation, strings

Make A Equal to B

brute force, greedy, sortings

House Planning

constructive algorithms, data structures, graph matchings, greedy

Phase Shift

dfs and similar, dsu, graphs, greedy, implementation, strings

Tea with Tangerines

greedy, math

Working Week

constructive algorithms, greedy, math

Slime Escape

data structures, dp, greedy, two pointers

Removing Smallest Multiples

greedy, math

Select Three Sticks

brute force, greedy, sortings

Zero-One (Hard Version)

dp, greedy

Zero-One (Easy Version)

constructive algorithms, greedy, math

Consecutive Sum

greedy, sortings

Sheikh (Hard Version)

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

Sheikh (Easy version)

binary search, bitmasks, greedy, two pointers

Ugu

brute force, dp, greedy, implementation

Graph Cost

dp, greedy, math, number theory

Kill Demodogs

greedy, math

Joey Takes Money

greedy, math

Minimum Notation

data structures, greedy, math, sortings

Meeting on the Line

binary search, geometry, greedy, implementation, math, ternary search

Planets

data structures, greedy, sortings

Friends and the Restaurant

greedy, sortings, two pointers

Decode String

greedy, strings

Fishermen

flows, graph matchings, greedy

Red-Black Pepper

brute force, data structures, greedy, math, number theory

Digital Logarithm

data structures, greedy, sortings

Best Permutation

constructive algorithms, greedy

Colored Balls: Revisited

brute force, greedy, implementation, sortings

A Certain Magical Party

combinatorics, data structures, greedy, sortings

Late For Work (submissions are not allowed)

data structures, greedy, schedules, shortest paths

Jatayu's Balanced Bracket Sequence

data structures, dsu, graphs, greedy

Mainak and Array

greedy, math

Basketball Together

binary search, greedy, sortings

Even-Odd XOR

bitmasks, constructive algorithms, greedy

Line

greedy, sortings

Maximum AND

bitmasks, dfs and similar, divide and conquer, greedy, sortings

Min-Max Array Transformation

binary search, greedy, two pointers

Image

greedy, implementation

Misha and Paintings

constructive algorithms, data structures, greedy, implementation, math

Corners

greedy, implementation

Interesting Sum

brute force, data structures, greedy, math, sortings

Permutation for Burenka

data structures, graph matchings, greedy, math, trees

Tonya and Burenka-179

data structures, greedy, math, number theory

Fibonacci Strings

greedy, implementation, math, number theory

Burenka and Traditions (hard version)

data structures, dp, greedy

Burenka and Traditions (easy version)

dp, greedy

Madoka and The Corruption Scheme

combinatorics, constructive algorithms, greedy, math

Madoka and Formal Statement

greedy

Robot in a Hallway

data structures, dp, greedy, implementation, ternary search

2-3 Moves

greedy, math

Long Way Home

data structures, divide and conquer, dp, geometry, graphs, greedy, shortest paths

2+ doors

2-sat, bitmasks, graphs, greedy

Beautiful Array

constructive algorithms, greedy, math