Arithmetic Exercise

*special problem, data structures, dp, greedy

Alice, Bob, And Two Arrays

*special problem, data structures, dp, games

Another Folding Strip

combinatorics, constructive algorithms, data structures, divide and conquer, dp, greedy, math

Maximum Polygon

brute force, data structures, greedy, implementation, math

Binary Subsequence Value Sum

combinatorics, data structures, dp, fft, math, matrices

Counting Points

brute force, data structures, geometry, implementation, two pointers

Towering Arrays

binary search, data structures

Infinite Sequence (Hard Version)

bitmasks, brute force, constructive algorithms, data structures, dp, implementation, math

Trapmigiano Reggiano

constructive algorithms, data structures, dfs and similar, dp, greedy, sortings, trees

Game with Binary String

constructive algorithms, data structures, divide and conquer, games, greedy, math

Graph Inclusion

data structures, dfs and similar, divide and conquer, dsu, graphs

Porto Vs. Benfica

data structures, dfs and similar, dsu, graphs, shortest paths

Tropical Season

binary search, data structures, greedy, implementation

White Magic

constructive algorithms, data structures, dp, greedy, implementation

Bro Thinks He's Him

combinatorics, data structures, divide and conquer, dp, math, matrices

Skibidus and Slay

data structures, dfs and similar, graphs, greedy, trees

We Be Summing

binary search, data structures, dp, two pointers

Mycraft Sand Sort

combinatorics, data structures, dsu, greedy, math, sortings

Eating

binary search, bitmasks, brute force, data structures, dp, greedy, trees, two pointers

Counting Is Not Fun (Hard Version)

combinatorics, data structures, dfs and similar, dsu, graphs, implementation, trees

Counting Is Not Fun (Easy Version)

combinatorics, data structures, dfs and similar, dp, dsu, graphs, hashing, implementation, math, trees

Triangle Tree

data structures, dfs and similar, dp, greedy, trees

Game With Triangles

binary search, brute force, data structures, geometry, greedy, implementation, math, ternary search, two pointers

Remove Exactly Two

brute force, data structures, dfs and similar, dp, graphs, greedy, sortings, trees

Subsequence Update

constructive algorithms, data structures, greedy, sortings

The Game (Hard Version)

data structures, dfs and similar, games, graphs, implementation, trees

The Game (Easy Version)

data structures, dfs and similar, games, graphs, greedy, trees

Kevin and Binary String (Hard Version)

data structures, dp

Kevin and Numbers

bitmasks, data structures

Stop Gaming (Hard Version)

brute force, constructive algorithms, data structures, hashing, strings

Graph and Graph

data structures, graphs, greedy, shortest paths

Coffee Break

data structures, greedy, math

Formation

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

Gifts Order

data structures, greedy, implementation, math, matrices

Unique Median

binary search, brute force, combinatorics, data structures, divide and conquer, dp

Haystacks

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

Affectionate Arrays (Hard Version)

data structures, dp, graphs, greedy, math, shortest paths, two pointers

Affectionate Arrays (Easy Version)

data structures, dp, greedy

Earnest Matrix Complement

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

Refined Product Optimality

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

Outstanding Impressionist

binary search, brute force, data structures, greedy

Geometric Balance

data structures, geometry, implementation

Best Price

binary search, brute force, data structures, greedy, sortings

Maximum modulo equality

data structures, divide and conquer, math, number theory

MEX OR Mania

bitmasks, brute force, data structures, dsu, implementation

Kevin and Strange Operation

data structures, dp

Kevin and Math Class

brute force, data structures, divide and conquer, dp, implementation, math, trees

Kevin and Competition Memories

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

Yandex Cuneiform (Hard Version)

constructive algorithms, data structures, greedy, implementation

Yandex Cuneiform (Easy Version)

constructive algorithms, data structures, greedy

Adventurers

binary search, data structures, greedy, sortings, ternary search, two pointers

Move Back at a Cost

binary search, data structures, greedy, sortings

Xorderable Array

bitmasks, data structures

Microwavable Subsequence

data structures

Narrower Passageway

combinatorics, data structures

Hard Demon Problem

constructive algorithms, data structures, dp, implementation, math

Easy Demon Problem

binary search, brute force, data structures, math, number theory

Problem with Queries

brute force, data structures, implementation

Matrix Transformation

bitmasks, brute force, data structures, dfs and similar, graphs, greedy, implementation

Sums on Segments

binary search, brute force, data structures, dp, greedy, math

Two Subarrays

data structures, dp, implementation, matrices

Vertex Pairs

binary search, brute force, data structures, dfs and similar, divide and conquer, greedy, implementation, trees

Recommendations

data structures, implementation, sortings, two pointers

Selection Sort

binary search, data structures, greedy, two pointers

Bottle Arrangement

data structures, divide and conquer, dp, dsu, greedy

Auto Complete

binary search, data structures, hashing, implementation, sortings, strings, trees

Polyathlon

binary search, data structures, hashing, string suffix structures, strings

Alternative Platforms

combinatorics, data structures, fft, math, sortings

Barrels

data structures, greedy, math

Divide OR Conquer

binary search, bitmasks, data structures, dp, implementation

DIY

data structures, geometry, greedy, sortings

Natlan Exploring

bitmasks, combinatorics, data structures, dp, math, number theory

Ardent Flames

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

Sharky Surfing

data structures, greedy, two pointers

Reverse the Rivers

binary search, constructive algorithms, data structures, greedy

Yet Another Real Number Problem

binary search, data structures, divide and conquer, greedy, implementation, math

Rakhsh's Revival

data structures, greedy, implementation, two pointers

Sakurako and Chefir

data structures, dfs and similar, dp, greedy, trees

Sakurako, Kosuke, and the Permutation

brute force, data structures, dfs and similar, dsu, graphs, greedy, math

Kousuke's Assignment

data structures, dp, dsu, greedy, math

Balanced

constructive algorithms, data structures, greedy, implementation, math

Genokraken

constructive algorithms, data structures, graphs, greedy, implementation, interactive, trees, two pointers

Penchick and Chloe's Trees

data structures, dfs and similar, dp, greedy, implementation, math, sortings, trees

Penchick and Desert Rabbit

binary search, data structures, dfs and similar, dp, dsu, greedy, implementation, two pointers

Orangutan Approved Subarrays

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

MEXimize the Score

combinatorics, data structures, dp, greedy, implementation, math

QED's Favorite Permutation

data structures, implementation, sortings

Balanced Problem

data structures, dp

Cool Graph

constructive algorithms, data structures, dfs and similar, dsu, graphs, greedy, trees

New Rating

binary search, data structures, dp, greedy

Alice's Adventures in Cards

constructive algorithms, data structures, dp, graphs, greedy, implementation, ternary search

The Endspeaker (Hard Version)

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

Add Zeros

brute force, data structures, dfs and similar, dp, graphs, greedy

Bermart Ice Cream

data structures, dfs and similar, divide and conquer, dp, implementation, trees

Sums of Segments

binary search, data structures, dp, implementation, math

Action Figures

binary search, brute force, constructive algorithms, data structures, greedy, implementation

Variable Damage

data structures, flows

Attribute Checks

brute force, data structures, dp, implementation, math, two pointers

Hills and Pits

data structures, greedy, math, matrices

Billetes MX (Hard Version)

binary search, combinatorics, data structures, dsu, graphs