Binary Colouring

bitmasks, constructive algorithms, greedy, math

Chamo and Mocha's Array

binary search, brute force, greedy

378QAQ and Mocha's Array

brute force, greedy, math, sortings

Binary Cut

dp, greedy, implementation, sortings, strings

Balanced Shuffle (Easy)

implementation, sortings

Shifts and Sorting

constructive algorithms, greedy

Rectangle Filling

constructive algorithms, implementation

A BIT of a Construction

bitmasks, constructive algorithms, greedy, implementation

Progressive Square

constructive algorithms, data structures, implementation, sortings

Long Multiplication

greedy, math, number theory

Make It Ugly

implementation, math

Battle Cows

binary search, data structures, greedy

Product of Binary Decimals

brute force, dp, implementation, number theory

Array Fix

brute force, dp, greedy, implementation

Maximum Sum

dp, greedy, math

Rudolf and the Ball Game

dfs and similar, dp, implementation

Rudolf and 121

brute force, dp, greedy, math

Yet Another Coin Problem

brute force, dp, greedy, math

Turtle Tenacity: Continual Mods

constructive algorithms, greedy, math, number theory, sortings

Turtle Fingers: Count the Values of k

brute force, implementation, math, number theory

Make Equal Again

brute force, greedy, math

Equalize

binary search, greedy, sortings, two pointers

Choose the Different Ones!

brute force, greedy, math

Vlad and a Sum of Sum of Digits

dp, implementation

A Balanced Problemset?

brute force, greedy, math, number theory

Monsters Attack!

dp, greedy, implementation

Very Different Array

data structures, greedy, sortings, two pointers

Summation Game

games, greedy, math, sortings

Training Before the Olympiad

constructive algorithms, games, greedy, implementation, math

Three Activities

brute force, dp, greedy, implementation, sortings

Quests

greedy, math

Username

*special problem, implementation

Removal of Unattractive Pairs

constructive algorithms, greedy, math, strings

YetnotherrokenKeoard

data structures, implementation, strings

Begginer's Zelda

greedy, trees

Collecting Game

binary search, dp, greedy, sortings, two pointers

StORage room

bitmasks, brute force, constructive algorithms, greedy

Getting Points

binary search, brute force, greedy

Chip and Ribbon

greedy, math

Yarik and Array

dp, greedy, two pointers

250 Thousand Tons of TNT

brute force, implementation, number theory

Haunted House

binary search, greedy, math, two pointers

Perfect Square

brute force, implementation

Helmets in Night Light

greedy, sortings

Jellyfish and Game

brute force, games, greedy, implementation

Friendly Arrays

bitmasks, greedy, math

Swap and Reverse

constructive algorithms, greedy, sortings, strings

MEX Repetition

implementation, math

Split Sort

greedy, math, sortings

Flower City Fence

binary search, data structures, implementation, sortings

Two Binary Strings

constructive algorithms, dp, greedy

Fancy Coins

binary search, brute force, greedy, math

Another Permutation Problem

brute force, dp, greedy, math

Olya and Game with Arrays

constructive algorithms, greedy, math, sortings

Yet Another Permutation Problem

constructive algorithms, greedy, math, number theory

Assembly via Minimums

greedy, sortings

Maximum Rounding

greedy, implementation, math

Tiles Comeback

greedy

Cardboard for Pictures

binary search, geometry, implementation, math

Monsters

greedy, math, sortings

Vika and the Bridge

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

Hamon Odyssey

bitmasks, greedy, two pointers

Rudolf and the Another Competition

constructive algorithms, data structures, dp, greedy, sortings

Tenzing and Books

bitmasks, greedy, math

Keep it Beautiful

implementation

Lamps

greedy, sortings

Best Binary String

constructive algorithms, greedy

Astrophysicists

greedy, math

Game with Reversing

games, greedy, math, strings

Maximum Strength

greedy, math

Contrast Value

greedy, implementation

Array merging

constructive algorithms, greedy

The Lakes

dfs and similar, dsu, graphs, implementation

Gold Rush

brute force, dfs and similar, dp, implementation

Trust Nobody

brute force, greedy, implementation, sortings

LuoTianyi and the Table

greedy, math

Sort the Subarray

brute force, greedy

Grid Reconstruction

constructive algorithms, greedy

Restore the Array

constructive algorithms, greedy

Conveyor Belts

implementation, math

Points on Plane

binary search, greedy, math

Subsequence Addition (Hard Version)

bitmasks, dp, greedy, implementation, sortings

Subsequence Addition (Easy Version)

brute force, data structures, dp, greedy, implementation, sortings

Vaccination

greedy, implementation

Settlement of Guinea Pigs

greedy, implementation, math

Remove Two Letters

data structures, greedy, hashing, strings

Powering the Hero (hard version)

data structures, greedy

Powering the Hero (easy version)

data structures, greedy

Count the Number of Pairs

greedy, strings

Equalize by Divide

brute force, constructive algorithms, greedy, math

Three Sevens

brute force, data structures, greedy, implementation

Li Hua and Pattern

constructive algorithms, greedy

Asterisk-Minor Template

implementation, strings

Stand-up Comedian

greedy, math

Teleporters (Easy Version)

greedy, sortings

Negatives and Positives

dp, greedy, sortings

Distinct Split

brute force, greedy, strings

Matryoshkas

data structures, greedy, sortings

Premutation

brute force, implementation, math

Sum of Two Numbers

constructive algorithms, greedy, implementation, math, probabilities