Tree Cutting

binary search, dp, greedy, implementation, trees

Rudolf and k Bridges

binary search, data structures, dp, two pointers

Vlad and an Odd Ordering

binary search, bitmasks, data structures, dp, implementation, math, number theory

Did We Get Everything Covered?

constructive algorithms, dp, greedy, shortest paths, strings

Yet Another Monster Fight

binary search, dp, greedy, implementation, math

Medium Design

brute force, data structures, dp, greedy, sortings

Minimum Maximum Distance

dfs and similar, dp, graphs, shortest paths, trees

Block Sequence

dp

Sum of XOR Functions

bitmasks, combinatorics, divide and conquer, dp, math

Jellyfish and Mex

dp

Data Structures Fan

binary search, bitmasks, data structures, dp

Matrix Cascade

brute force, constructive algorithms, data structures, dp, greedy, math

The Walkway

brute force, dp, greedy, math, number theory

To Become Max

binary search, brute force, data structures, dp

Nastya and Potions

dfs and similar, dp, graphs, sortings

Tenzing and Balls

dp

Don't Blame Me

bitmasks, combinatorics, dp, math

Hits Different

data structures, dp, implementation, math

Running Miles

brute force, dp, greedy

Gardening Friends

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

Living Sequence

binary search, dp, math, number theory

Serval and Toxel's Arrays

combinatorics, dp, implementation, math

Remove the Bracket

dp, greedy, math

Boris and His Amazing Haircut

constructive algorithms, data structures, dp, dsu, greedy, sortings

Playoff

combinatorics, constructive algorithms, dp, greedy, math

The Humanoid

brute force, dp, sortings

Make Nonzero Sum (hard version)

constructive algorithms, dp, greedy

Zero-Sum Prefixes

brute force, data structures, dp, greedy, implementation

Problem with Random Tests

brute force, dp, greedy, probabilities

Sending a Sequence Over the Network

dp

Card Game

combinatorics, constructive algorithms, dp, games

Even Number Addicts

dp, games, greedy, math

Valiant's New Map

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

Counting Rectangles

brute force, data structures, dp, implementation

Color with Occurrences

brute force, data structures, dp, greedy, strings

Good Key, Bad Key

bitmasks, brute force, dp, greedy, math

Zero Path

brute force, data structures, dp, graphs, greedy, shortest paths

Fake Plastic Trees

dfs and similar, dp, greedy, trees

Gambling

data structures, dp, greedy, math

Infected Tree

dfs and similar, dp, trees

Required Length

brute force, dfs and similar, dp, hashing, shortest paths

Tokitsukaze and Strange Inequality

brute force, data structures, dp

Palindrome Basis

brute force, dp, math, number theory

Line Empire

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

Factorials and Powers of Two

bitmasks, brute force, constructive algorithms, dp, math

Make Them Equal

dp, greedy

Strange Test

binary search, bitmasks, brute force, dp, math

Monsters And Spells

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

Road Optimization

dp

MEX and Increments

constructive algorithms, data structures, dp, greedy, implementation, math, sortings

Divan and bitwise operations

bitmasks, combinatorics, constructive algorithms, dp, math

Game Master

data structures, dfs and similar, dp, graphs, greedy, two pointers

The Number of Imposters

constructive algorithms, dfs and similar, dp, dsu, graphs

Bakry and Partitioning

bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees

Omkar and Determination

data structures, dp

Portal

brute force, data structures, dp, greedy, implementation

Fix the String

*special problem, bitmasks, dp, greedy

Carrying Conundrum

bitmasks, combinatorics, dp, math

Two Hundred Twenty One (easy version)

data structures, dp, math

Up the Strip (simplified version)

brute force, data structures, dp, math, number theory

Moamen and XOR

bitmasks, combinatorics, dp, math, matrices

Say No to Palindromes

brute force, constructive algorithms, dp, strings

Backspace

dp, greedy, strings, two pointers

Air Conditioners

data structures, dp, implementation, shortest paths, sortings, two pointers

Interesting Function

binary search, dp, math, number theory

Erase and Extend (Easy Version)

binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers

Diluc and Kaeya

data structures, dp, hashing, number theory

Kavi on Pairing Duty

combinatorics, dp, math

Parsa's Humongous Tree

dfs and similar, divide and conquer, dp, greedy, trees

Potions (Easy Version)

brute force, data structures, dp, greedy

Maximum Sum of Products

brute force, dp, implementation, math, two pointers

Baby Ehab Partitions Again

bitmasks, constructive algorithms, dp, math

AGAGA XOOORRR

bitmasks, brute force, dp, greedy

Add One

dp, matrices

Short Task

brute force, dp, math, number theory

Planar Reflections

brute force, data structures, dp

Square-Free Division (easy version)

data structures, dp, greedy, math, number theory, two pointers

Maximum width

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

Pekora and Trampoline

brute force, data structures, dp, greedy, implementation

Journey

dfs and similar, dp, dsu, implementation

Longest Simple Cycle

dp, graphs, greedy

Program

data structures, dp, implementation, strings

Correct Placement

binary search, data structures, dp, sortings, two pointers

Building a Fence

dp, greedy, implementation, two pointers

Random Events

dp, math, probabilities

Sequence and Swaps

dp, greedy, sortings

Radio Towers

combinatorics, dp, math

Bargain

combinatorics, dp, math

Mortal Kombat Tower

dp, graphs, greedy, shortest paths

Discrete Acceleration

binary search, dp, implementation, math, two pointers

Good Subarrays

data structures, dp, math

Boboniu and Bit Operations

bitmasks, brute force, dp, greedy

Omkar and Bed Wars

dp, greedy

Cyclic Permutations

combinatorics, dp, graphs, math

Good String

brute force, dp, greedy, two pointers

Array Walk

brute force, dp, greedy

a-Good String

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

Maximum Sum on Even Positions

divide and conquer, dp, greedy, implementation

Spy-string

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

Magic Tricks

*special problem, dp, graphs