Array Game

games, greedy, two pointers

Bob's Beautiful Array

bitmasks, brute force, greedy

Weights

constructive algorithms, greedy, two pointers

Make Them Equal

brute force, greedy, math, strings

Changing Brackets

constructive algorithms, data structures, dp, greedy

Gardener and Tree

brute force, data structures, dfs and similar, greedy, implementation, trees

Save More Mice

binary search, greedy, greedy

Make it Divisible by 25

dfs and similar, dp, greedy, math, math

Alice and Recoloring 2

constructive algorithms, flows, graph matchings, greedy

Alice and Recoloring 1

constructive algorithms, greedy

Bored Bakry

bitmasks, greedy, math, two pointers

Gamer Hemose

binary search, greedy, math, sortings

Minimize Distance

greedy

Array Eversion

greedy

Strange LCS

bitmasks, dp, graphs, greedy, strings

Game with Stones

binary search, data structures, games, greedy

Two Arrays

greedy, math, sortings

Coloring Rectangles

greedy, math

Moment of Bloom

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

Omkar and the Meaning of Life

constructive algorithms, greedy, interactive

Korney Korneevich and XOR (hard version)

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

Korney Korneevich and XOR (easy version)

bitmasks, dp, greedy

Pchelyonok and Segments

binary search, data structures, dp, greedy, math

Grandma Capa Knits a Scarf

brute force, data structures, greedy, strings, two pointers

Diameter of Graph

constructive algorithms, graphs, greedy, math

Subsequence

brute force, divide and conquer, dp, greedy, trees

Portal

brute force, data structures, dp, greedy, implementation

Array Optimization by Deque

data structures, greedy

Permutation Minimization by Deque

constructive algorithms, greedy, math

Productive Meeting

constructive algorithms, graphs, greedy

Ticks

greedy, implementation

Labyrinth

binary search, dsu, greedy

The Strongest Build

binary search, brute force, data structures, dfs and similar, graphs, greedy, hashing, implementation

Slay the Dragon

binary search, greedy, sortings, ternary search

Combinatorics Homework

combinatorics, greedy, math

Swaps

greedy, math, sortings

Countdown

greedy

Bridge Club

flows, graph matchings, graphs, greedy

Paint

dp, greedy

Xor of 3

brute force, constructive algorithms, greedy, two pointers

Fix the String

*special problem, bitmasks, dp, greedy

Expression Evaluation Error

constructive algorithms, greedy, implementation, math

MEXor Mixup

bitmasks, greedy

Four Vertices

constructive algorithms, data structures, graphs, greedy, implementation, shortest paths

Points Movement

data structures, dp, greedy, implementation, sortings

Buds Re-hanging

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

Seating Arrangements (hard version)

data structures, greedy, implementation, sortings, two pointers

Seating Arrangements (easy version)

data structures, greedy, sortings

MAX-MEX Cut

bitmasks, constructive algorithms, dp, greedy

MIN-MEX Cut

bitmasks, constructive algorithms, dp, greedy

Median Maximization

binary search, greedy, math

Rescue Niwen!

dp, greedy, string suffix structures, strings

The Miracle and the Sleeper

greedy, math

Deep Down Below

binary search, greedy, sortings

Nearest Beautiful Number (hard version)

bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy

Nearest Beautiful Number (easy version)

binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy

Make a Power of Two

greedy, math, strings

Mocha and Diana (Hard Version)

brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, trees, two pointers

Mocha and Diana (Easy Version)

brute force, constructive algorithms, dsu, graphs, greedy, trees

Mocha and Red and Blue

dp, greedy

Down Below

binary search, dfs and similar, graphs, greedy, meet-in-the-middle, shortest paths

Bottom-Tier Reversals

constructive algorithms, greedy

Ezzat and Grid

data structures, dp, greedy

Moamen and k-subarrays

greedy, sortings

DIY Tree

graphs, greedy, math, probabilities

Equilibrium

data structures, dp, greedy

Diane

constructive algorithms, greedy, strings

Mikasa

binary search, bitmasks, greedy, implementation

Cobb

bitmasks, brute force, greedy, math

Cherry

greedy

Backspace

dp, greedy, strings, two pointers

Penalty

bitmasks, brute force, dp, greedy

Colors and Intervals

constructive algorithms, data structures, greedy, sortings

Maximize the Intersections

combinatorics, constructive algorithms, geometry, greedy, sortings

Running for Gold

combinatorics, graphs, greedy, sortings

Interesting Story

greedy, sortings, strings

Wonderful Coloring - 2

binary search, constructive algorithms, data structures, greedy

Wonderful Coloring - 1

greedy, strings

Polycarp and Coins

greedy, math

Manhattan Subarrays

brute force, geometry, greedy, implementation

Maximum Cost Deletion

greedy, math

Find The Array

greedy, math

Gregor and the Pawn Game

dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation

Gregor and the Two Painters

data structures, divide and conquer, graphs, greedy, math

Web of Lies

brute force, graphs, greedy

Co-growing Sequence

bitmasks, constructive algorithms, greedy

Pair Programming

greedy, two pointers

Alphabetical Strings

greedy, implementation, strings

AquaMoon and Two Arrays

brute force, greedy

The Final Pursuit

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

Customising the Track

combinatorics, greedy, math

Exciting Bets

greedy, math, number theory

Pretty Permutations

constructive algorithms, greedy, implementation

Great Graphs

constructive algorithms, graphs, greedy, shortest paths, sortings

Strange Array

data structures, greedy, sortings

Game with Cards

binary search, constructive algorithms, data structures, dp, greedy, implementation

PriceFixed

binary search, greedy, implementation, sortings, two pointers

Stable Groups

greedy, sortings

Contest Start

combinatorics, geometry, greedy, math

Gift Set

binary search, greedy, math, ternary search