Tokitsukaze and Permutations

dp, math

Tokitsukaze and Two Colorful Tapes

constructive algorithms, dfs and similar, graphs, greedy

Tokitsukaze and Meeting

data structures, implementation, math

Tokitsukaze and Strange Inequality

brute force, data structures, dp

Maximum Crossings (Hard Version)

data structures, divide and conquer, sortings

Maximum Crossings (Easy Version)

brute force

White-Black Balanced Subtrees

dfs and similar, dp, graphs, trees

Longest Strike

data structures, greedy, implementation, sortings, two pointers

Eating Queries

binary search, greedy, sortings

X-Sum

brute force, greedy, implementation

Most Similar Words

brute force, greedy, implementation, implementation, math, strings

Equal Candies

greedy, math, sortings

Lucky?

implementation

Sorting Pancakes

dp

Vlad and Unfinished Business

dfs and similar, dp, greedy, trees

Replace With the Previous, Minimize

dsu, greedy, strings

Vertical Paths

graphs, implementation, trees

Detective Task

implementation

Make It Increasing

greedy, implementation

Food for Animals

greedy, math

Remove Directed Edges

dfs and similar, dp, graphs

Desktop Rearrangement

data structures, greedy, implementation

Breaking the Wall

binary search, brute force, constructive algorithms, greedy, math

A-B-C Sort

constructive algorithms, implementation, sortings

Infinite Replacement

combinatorics, implementation, strings

Dictionary

combinatorics, math

Number Transformation

constructive algorithms, math

Anti-Theft Road Planning

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

Power or XOR?

bitmasks, combinatorics, math, number theory

Lost Arithmetic Progression

combinatorics, math, number theory

Palindrome Basis

brute force, dp, math, number theory

A Perfectly Balanced String?

brute force, greedy, strings

Subtle Substring Subtraction

games, greedy, strings

PermutationForces

data structures, greedy

Zigu Zagu

constructive algorithms, data structures, greedy

Cross Xor

constructive algorithms, graphs, math, matrices

Checker for Array Shuffling

constructive algorithms, dfs and similar, graphs

Array Shuffling

constructive algorithms, graphs, greedy

notepad.exe

binary search, constructive algorithms, greedy, interactive

Cyclic Rotation

constructive algorithms, greedy, implementation, two pointers

Unequal Array

constructive algorithms, greedy, implementation

I love AAAB

constructive algorithms, implementation

Log Chopping

games, implementation, math

Permutation Counting

brute force, combinatorics, dp, fft, math

Preorder

combinatorics, divide and conquer, dp, dsu, hashing, sortings, trees

Insert a Progression

brute force, constructive algorithms, greedy

Dolce Vita

binary search, brute force, greedy, math

Consecutive Points Segment

brute force, math, sortings

String Building

implementation

Jee, You See?

bitmasks, combinatorics, dp

Hemose on the Tree

bitmasks, constructive algorithms, dfs and similar, trees

Very Suspicious

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

Where is the Pizza?

data structures, dfs and similar, dsu, graphs, implementation, math

Dorms War

brute force, implementation, strings

Prof. Slim

greedy, implementation, sortings

Maximal AND

bitmasks, greedy, math

Fall Down

dfs and similar, implementation

Eating Candies

binary search, data structures, greedy, two pointers

2-Letter Strings

data structures, math, strings

Colorful Stamp

implementation

Odd/Even Increments

greedy, greedy, implementation, math

Triple

implementation, sortings

Division?

implementation

Social Distance

greedy, math, sortings

Direction Change

implementation, math

Yin Yang

implementation

Centroid Probabilities

combinatorics, dp, fft, math

Edge Elimination

constructive algorithms, dfs and similar, dp, trees

Half Queen Cover

constructive algorithms, math

Optimal Partition

data structures, dp

Make it Increasing

brute force, greedy, math

Labyrinth

dfs and similar, graphs

Kingdom Partition

flows

Job Lookup

constructive algorithms, dp, shortest paths, trees

Interactive Treasure Hunt

brute force, constructive algorithms, geometry, interactive, math

Heroes of Might

math

Global Warming

geometry, math

Fancy Stack

combinatorics, dp, implementation

Even Split

binary search, constructive algorithms, greedy, math

Deletive Editing

greedy

Connect the Points

brute force, constructive algorithms, geometry

Budget Distribution

Admissible Map

MinimizOR

bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers

GCD Guess

bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory

Tree Infection

binary search, greedy, sortings, trees

Array Cloning Technique

constructive algorithms, greedy, sortings

GCD vs LCM

constructive algorithms, math

Cross-Language Program

*special problem, constructive algorithms

Six Characters

*special problem, constructive algorithms, strings

In Every Generation...

*special problem, strings

Are You Safe?

*special problem, implementation

Is it rated - 3

*special problem, combinatorics, dp, math

Pōja Verdon

*special problem, implementation, math

Mike's Sequence

*special problem, divide and conquer, implementation, math

Who Tested?

*special problem, expression parsing, trees

Circular Maze

brute force, dfs and similar, graphs, implementation

Drone Photo

combinatorics, math, sortings

Bottle Arrangements

constructive algorithms

Il Derby della Madonnina

data structures, dp, math