Nezzar and Colorful Balls

brute force, greedy

Inflation

binary search, brute force, greedy, math

Unusual Matrix

2-sat, brute force, constructive algorithms

New Year's Number

brute force, dp, math

Array Destruction

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

String LCM

brute force, math, number theory, strings

New Year's Puzzle

brute force, dp, graph matchings, greedy, sortings

Strange List

brute force, greedy, implementation, math

Strange Shuffle

binary search, brute force, constructive algorithms, interactive

A Bit Similar

bitmasks, brute force, hashing, string suffix structures, strings, two pointers

Ceil Divisions

brute force, constructive algorithms, math, number theory

The Robot

brute force, implementation

Hills And Valleys

brute force, implementation

Apollo versus Pan

bitmasks, brute force, math

Bovine Dilemma

brute force, geometry, math

Unique Number

brute force, greedy, math

Water Level

brute force, graphs, greedy, implementation, math

Divide and Summarize

binary search, brute force, data structures, divide and conquer, implementation, sortings

Find the Spruce

brute force, dp, implementation

Four Points

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

Checkpoints

brute force, constructive algorithms, greedy, math, probabilities

Two Editorials

brute force, dp, greedy, sortings, two pointers

Balls of Steel

brute force, geometry, greedy

Finding the Vertex

brute force, dfs and similar, dp, interactive, trees

Division

brute force, math, number theory

Long Permutation

brute force, math, two pointers

Yurii Can Do Everything

binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers

Marketing Scheme

brute force, constructive algorithms, greedy, math

Reducing Delivery Cost

brute force, graphs, shortest paths

Rogue-like Game

*special problem, brute force, greedy, two pointers

Number of Apartments

brute force, constructive algorithms, math

ABBB

brute force, data structures, greedy, strings

Rock, Paper, Scissors

brute force, constructive algorithms, flows, greedy, math

Swedish Heroes

brute force, dp, implementation

Hexagons

brute force, constructive algorithms, greedy, implementation, math, shortest paths

Sage's Birthday (hard version)

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

Stairs

brute force, constructive algorithms, greedy, implementation, math

XOR-gun

bitmasks, brute force, constructive algorithms

Bouncing Ball

brute force, dp, implementation

Repainting Street

brute force, brute force, greedy

Prison Break

brute force, math

Perform Easily

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

Grime Zoo

brute force, greedy, implementation, strings

Fair Numbers

brute force, number theory

Yet Another Array Restoration

brute force, math, number theory

Minimum Product

brute force, greedy, math

Searchlights

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

Big Vova

brute force, greedy, math, number theory

Maximum Product

brute force, dp, greedy, implementation, sortings

Mercenaries

bitmasks, brute force, combinatorics, dp, dsu, math, two pointers

x-prime Substrings

brute force, dfs and similar, dp, string suffix structures, strings

Zigzags

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

Binary String Reconstruction

2-sat, brute force, constructive algorithms, greedy

RPG Protagonist

brute force, greedy, math

Boats Competition

brute force, greedy, two pointers

Power Sequence

brute force, math, number theory, sortings

Stoned Game

brute force, constructive algorithms, games, greedy

Boboniu and Bit Operations

bitmasks, brute force, dp, greedy

Boboniu Likes to Color Balls

brute force, math

Boboniu Walks on Graph

brute force, dfs and similar, graphs, hashing

505

bitmasks, brute force, constructive algorithms, dp, greedy, implementation

Fix You

brute force, greedy, implementation

Segment Intersections

brute force, greedy, implementation, math

Good String

brute force, dp, greedy, two pointers

Array Walk

brute force, dp, greedy

Captain Flint and Crew Recruitment

brute force, greedy, math, number theory

a-Good String

bitmasks, brute force, divide and conquer, dp, implementation

Koa and the Beach (Easy Version)

brute force, dp, greedy

Rearrange

brute force, constructive algorithms, graphs, greedy, sortings

Common Subsequence

brute force

Create The Teams

brute force, dp, greedy, implementation, sortings

Three Indices

brute force, data structures

New Passenger Trams

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

Choosing flowers

binary search, brute force, data structures, dfs and similar, dp, greedy, sortings, two pointers

Dubious Cyrpto

binary search, brute force, math, number theory

Acacius and String

brute force, implementation, strings

Tree Modification

brute force, constructive algorithms, dfs and similar, graph matchings, graphs, trees

Replace by MEX

brute force, constructive algorithms, sortings

Cyclic Shifts Sorting

brute force, constructive algorithms, implementation, sortings

Sum of Digits

brute force, constructive algorithms, dp, greedy

Omkar and Circle

brute force, dp, games, greedy

Asterism (Easy Version)

binary search, brute force, combinatorics, math, number theory, sortings

Codeforces Subsequences

brute force, constructive algorithms, greedy, math, strings

C+=

brute force, greedy, implementation, math

Necklace Assembly

brute force, dfs and similar, dp, graphs, greedy, number theory

Two Arrays

binary search, brute force, combinatorics, constructive algorithms, dp, two pointers

Maximum Subsequence Value

brute force, constructive algorithms

Ehab and Prefix MEXs

brute force, constructive algorithms, greedy

XXXXX

brute force, data structures, number theory, two pointers

Odd Selection

brute force, implementation, math

Johnny and His Hobbies

bitmasks, brute force

Binary Median

binary search, bitmasks, brute force, constructive algorithms

Spy-string

bitmasks, brute force, constructive algorithms, dp, hashing, strings

RC Kaboom Show

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

New Theatre Square

brute force, dp, greedy, implementation, two pointers

Berland Poker

brute force, greedy, math

The Best Vacation

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

Sequence with Digits

brute force, implementation, math

Not So Simple Polygon Embedding

binary search, brute force, geometry, math

Decreasing Heights

brute force, dp