Railway System

constructive algorithms, graphs, greedy, interactive, sortings

The Enchanted Forest

brute force, greedy

Odd Subarrays

dp, greedy

Everything Everywhere All But One

greedy

The Ultimate LIS Problem

data structures, greedy

Permutation Weight (Hard Version)

constructive algorithms, greedy

Bring Balance

brute force, constructive algorithms, greedy

Linguistics

greedy, implementation, sortings, strings

Circular Local MiniMax

constructive algorithms, greedy, sortings

MEX vs DIFF

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

Traps

constructive algorithms, greedy, sortings

Column Swapping

brute force, constructive algorithms, greedy, implementation, sortings

MCMF?

data structures, flows, graphs, greedy, sortings, two pointers

Unordered Swaps

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

LIS or Reverse LIS?

constructive algorithms, greedy, implementation, math

Palindromic Indices

greedy, strings

Game with Cards

games, greedy

Moving Chips

bitmasks, dp, greedy

Dog Walking

brute force, greedy, math

Binary String

binary search, greedy, strings, two pointers

AvtoBus

brute force, greedy, math, number theory

Tokitsukaze and Good 01-String (hard version)

dp, greedy, implementation

Tokitsukaze and Two Colorful Tapes

constructive algorithms, dfs and similar, graphs, greedy

Longest Strike

data structures, greedy, implementation, sortings, two pointers

Eating Queries

binary search, greedy, sortings

X-Sum

brute force, greedy, implementation

Most Similar Words

brute force, greedy, implementation, implementation, math, strings

Equal Candies

greedy, math, sortings

Vlad and Unfinished Business

dfs and similar, dp, greedy, trees

Replace With the Previous, Minimize

dsu, greedy, strings

Make It Increasing

greedy, implementation

Food for Animals

greedy, math

Desktop Rearrangement

data structures, greedy, implementation

Breaking the Wall

binary search, brute force, constructive algorithms, greedy, math

Anti-Theft Road Planning

bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math

A Perfectly Balanced String?

brute force, greedy, strings

Subtle Substring Subtraction

games, greedy, strings

PermutationForces

data structures, greedy

Zigu Zagu

constructive algorithms, data structures, greedy

Array Shuffling

constructive algorithms, graphs, greedy

notepad.exe

binary search, constructive algorithms, greedy, interactive

Cyclic Rotation

constructive algorithms, greedy, implementation, two pointers

Unequal Array

constructive algorithms, greedy, implementation

Insert a Progression

brute force, constructive algorithms, greedy

Dolce Vita

binary search, brute force, greedy, math

Very Suspicious

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

Prof. Slim

greedy, implementation, sortings

Maximal AND

bitmasks, greedy, math

Eating Candies

binary search, data structures, greedy, two pointers

Odd/Even Increments

greedy, greedy, implementation, math

Social Distance

greedy, math, sortings

Make it Increasing

brute force, greedy, math

Even Split

binary search, constructive algorithms, greedy, math

Deletive Editing

greedy

MinimizOR

bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers

Tree Infection

binary search, greedy, sortings, trees

Array Cloning Technique

constructive algorithms, greedy, sortings

Gastronomic Event

dp, greedy, trees

Evolution of Weasels

greedy, implementation, strings

Toys

greedy, strings

Teleporters

binary search, greedy

Progressions Covering

data structures, greedy

Water the Trees

binary search, greedy, math

Getting Zero

bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths

Array Balancing

greedy, math

Matrix and Shifts

brute force, constructive algorithms, greedy, implementation

Get an Even String

dp, greedy, strings

Vasya and Coins

greedy, math

Reverse Sort Sum

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

Line Empire

binary search, brute force, dp, greedy, implementation, math

Bit Flipping

bitmasks, constructive algorithms, greedy, strings

Red Versus Blue

constructive algorithms, greedy, implementation, math

Juju and Binary String

brute force, constructive algorithms, greedy, math

For Gamers. By Gamers.

binary search, brute force, greedy, math, sortings

Bracket Sequence Deletion

greedy, implementation

XY Sequence

greedy

Parametric MST

binary search, constructive algorithms, graphs, greedy, math, sortings

Subtract Operation

data structures, greedy, math, two pointers

Snowy Mountain

data structures, dfs and similar, graphs, greedy, shortest paths, trees

Minimal String Xoration

bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings

Alice and the Cake

data structures, greedy, implementation, sortings

Maximum Cake Tastiness

brute force, greedy, implementation, sortings

Sum of Matchings

brute force, combinatorics, constructive algorithms, dfs and similar, graph matchings, greedy, math

Prove Him Wrong

constructive algorithms, greedy

Vitaly and Advanced Useless Algorithms

dp, greedy, implementation

Rescheduling the Exam

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

Weight of the System of Nested Segments

greedy, hashing, implementation, sortings

Game of Ball Passing

greedy, implementation

Madoka and Laziness

dp, greedy

Madoka and the Sixth-graders

data structures, dfs and similar, greedy

Madoka and Childish Pranks

constructive algorithms, greedy

Playing Around the Table

constructive algorithms, greedy, implementation

Quality vs Quantity

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

Increase Subarray Sums

brute force, dp, greedy, implementation

Power Walking

greedy

Two Arrays

bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers

Anonymity Is Important

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

Great Sequence

brute force, greedy, sortings

Two Posters

brute force, data structures, greedy, two pointers

Big Brush

constructive algorithms, data structures, greedy, implementation