Painting Numbers

*special problem, data structures, greedy, number theory

Problemsolving Marathon

*special problem, binary search, greedy

RBS Deletion

*special problem, greedy

Ones

dp, greedy, shortest paths

Cheap Dinner

brute force, data structures, graphs, greedy, implementation, sortings, two pointers

Minimum Ties

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math

Shifting Stacks

greedy, implementation

Move and Swap

dfs and similar, dp, greedy, trees

Add and Divide

brute force, greedy, math, number theory

Basic Diplomacy

brute force, constructive algorithms, greedy, implementation

AB Tree

dp, greedy, trees

Sorting Books

data structures, dp, greedy

AB Graph

brute force, constructive algorithms, graphs, greedy, implementation

Fence Painting

brute force, constructive algorithms, greedy

New Colony

brute force, greedy, implementation

Space Navigation

greedy, strings

The Great Hero

greedy, implementation, sortings

Yet Another String Game

games, greedy, strings

Painting the Array II

constructive algorithms, data structures, dp, greedy, implementation

Painting the Array I

constructive algorithms, data structures, dp, greedy, implementation

Nezzar and Lucky Number

brute force, dp, greedy, math

Nezzar and Colorful Balls

brute force, greedy

Nezzar and Tournaments

data structures, greedy

Nezzar and Nice Beatmap

constructive algorithms, geometry, greedy, math, sortings

Nezzar and Binary String

data structures, greedy

Longest Simple Cycle

dp, graphs, greedy

Inflation

binary search, brute force, greedy, math

K-divisible Sum

binary search, constructive algorithms, greedy, math

What Is It?

constructive algorithms, greedy

Cleaning

data structures, dp, greedy, math

Array Destruction

brute force, constructive algorithms, data structures, greedy, implementation, sortings

Different Divisors

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

Puzzle From the Future

greedy

Replacing Elements

greedy, implementation, math, sortings

New Year's Puzzle

brute force, dp, graph matchings, greedy, sortings

Even-Odd Game

dp, games, greedy, sortings

Fair Division

dp, greedy, math

Cards for Friends

greedy, math

Strange List

brute force, greedy, implementation, math

Strange Partition

greedy, math, number theory

Strange Housing

constructive algorithms, dfs and similar, graph matchings, graphs, greedy

Strange Birthday Party

binary search, dp, greedy, sortings, two pointers

Power Sockets

binary search, data structures, greedy

Building a Fence

dp, greedy, implementation, two pointers

Red and Blue

dp, greedy

Regular Bracket Sequence

constructive algorithms, greedy

Waste Sorting

greedy, implementation

Prime Divisors Selection

binary search, greedy, math, number theory

Road Reform

dsu, graphs, greedy

K and Medians

constructive algorithms, greedy, math

Four Segments

greedy

LaIS

data structures, dp, greedy

Three Bags

constructive algorithms, greedy

Wizard of Orz

constructive algorithms, greedy, math

Finding satisfactory solutions

combinatorics, dp, graphs, greedy, math

Euclid's nightmare

bitmasks, dfs and similar, dsu, graphs, greedy, math, sortings

13th Labour of Heracles

data structures, greedy, sortings, trees

Canine poetry

dp, greedy, strings

Last minute enhancements

dp, greedy

Pairs

binary search, constructive algorithms, greedy, two pointers

Find The Array

bitmasks, constructive algorithms, greedy

The Treasure of The Segments

binary search, data structures, greedy

Add to Neighbour and Remove

greedy, math, number theory

Unique Number

brute force, greedy, math

Mathematical Expression

constructive algorithms, dp, greedy

Water Level

brute force, graphs, greedy, implementation, math

String Generation

constructive algorithms, greedy

Flip and Reverse

data structures, graphs, greedy

XOR-ranges

dp, greedy

String and Operations

dp, greedy

Four Points

brute force, constructive algorithms, flows, geometry, greedy, implementation, math, ternary search

Sequence and Swaps

dp, greedy, sortings

Array Partition

binary search, data structures, greedy, two pointers

Sequence Transformation

greedy, implementation

Dog Snacks

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

Checkpoints

brute force, constructive algorithms, greedy, math, probabilities

Triangles

greedy, implementation

Game On Tree

data structures, dfs and similar, greedy, trees

Divide Powers

constructive algorithms, greedy

Two Editorials

brute force, dp, greedy, sortings, two pointers

Two Brackets

greedy

Toy Blocks

binary search, greedy, math, sortings

String Equality

dp, greedy, hashing, implementation, strings

Non-Substring Subsequence

dp, greedy, implementation, strings

Subtract or Divide

greedy, math

The Struggling Contestant

constructive algorithms, greedy

Rating Compression

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

Balls of Steel

brute force, geometry, greedy

Numbers Box

greedy, math

Frequency Problem (Hard Version)

data structures, greedy, two pointers

Frequency Problem (Easy Version)

data structures, greedy

Knapsack

constructive algorithms, greedy, sortings

Elimination

greedy, math

Array Rearrangment

greedy, sortings

The Delivery Dilemma

binary search, greedy, sortings

Saving the City

dp, greedy, math, sortings

Black, White and Grey Tree

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

Sum

data structures, divide and conquer, dp, greedy

Graph Transpositions

dfs and similar, graphs, greedy, shortest paths

Identify the Operations

combinatorics, data structures, dsu, greedy, implementation