Summmon

binary search, data structures, greedy, math, number theory

A Bit Odd

data structures, games, greedy, math

Fair and Square

combinatorics, dp, graphs, math, number theory, trees

An Alternative Way

dp, greedy, math

RemovevomeR

greedy

Good times Good times

constructive algorithms, math

Divide and Conquer

greedy, math, number theory

AI Finds Nothing Here

combinatorics, math

Another Popcount Problem

greedy

Colorful Works

dp, fft, games, implementation

The end of this world,

data structures, divide and conquer, dsu

Hunting the Beast

combinatorics, dp, graphs, math

Revival

binary search, data structures, math, two pointers

Decidophobia

greedy, math, sortings, two pointers

Nim Game Is XOR Game

constructive algorithms, games, greedy, math

Infinite Work

combinatorics, graphs, greedy, math, trees

Cake Trial

dp, greedy

Storming Arasaka

greedy, math, number theory

Village Guilds

dfs and similar, dp, trees

Crimson Triples

dp, math, number theory

Another Puzzle from Papyrus

greedy, math, sortings

DBFS Order (Hard Version)

dp, trees

DBFS Order (Easy Version)

dp, trees

Slime and Queries

data structures, greedy, trees

Send GCDs

communication, constructive algorithms, interactive, math, number theory

Paint the Array

data structures, dp, greedy

Permutation Commutation

data structures, graphs, greedy

Fullmetal Bitchemist

constructive algorithms, greedy, math

Duck Surplus

binary search, greedy

Annoying the Ghost

brute force, greedy

Destroying Towers

games, greedy, schedules

Criterion in Burlandia

binary search, bitmasks, brute force, brute force, data structures, data structures, dfs and similar, divide and conquer, implementation, trees, two pointers

Elections in Saransk (hard version)

combinatorics, dp, dp, dp, math, number theory

Elections in Saransk (easy version)

number theory

Friendly Gifts

brute force, dp

Brand New Tatar TV Show

binary search, constructive algorithms, dp, games, games, math

Omsk Programmers

brute force, greedy, greedy, math, math

Tatar TV Show

greedy, math, strings

Games on the Train

greedy, math

Stripe, Token and Two Players

data structures, dp, games

Vessels, Heights and Two Versions (Hard Version)

data structures, dfs and similar, dsu, greedy, implementation, two pointers

Vlad, Misha and Two Arrays

brute force, combinatorics, dfs and similar, divide and conquer, math

XOR, Expression and Two Binary Numbers

bitmasks, divide and conquer, dp, math, number theory

Vessels, Heights and Two Versions (Easy Version)

dfs and similar, dsu, greedy, implementation, two pointers

Palindrome, Twelve and Two Terms

brute force, constructive algorithms, math

Euclid, Sequence and Two Numbers

math, number theory, sortings

Shortest GCD Paths

dp, graphs, math, number theory, shortest paths, shortest paths

Permutation Transmission (Difficult Version)

bitmasks, combinatorics, sortings

Permutation Transmission (Easy Version)

bitmasks, combinatorics, sortings

Goods on the Shelf

brute force, data structures, implementation, two pointers

Cost of a Bracket Sequence

brute force, dp, greedy

Different Distances

constructive algorithms

AI Project Development

brute force, math

The Cake Is a Lie

greedy, math, number theory, number theory

Snaking Arrangement

combinatorics, combinatorics, combinatorics, constructive algorithms

Magical Tiered Cake

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

Seating Arrangement (Hard Version)

binary search, binary search, binary search, greedy, greedy, greedy, math, two pointers

Seating Arrangement (Easy Version)

binary search, binary search, dp, greedy, greedy, two pointers, two pointers

Cake Leveling

binary search, greedy, math

Convergence

greedy, sortings, sortings, sortings

Quadratic Jumps

brute force, constructive algorithms, greedy, math, number theory

Graph Cutting

dfs and similar, dp, math, trees

Maximum Prefix Sums

constructive algorithms, greedy, implementation, two pointers

Chipmunk Theo and Equality

implementation, sortings

Another Sorting Problem

constructive algorithms

Construct an Array

constructive algorithms

Game on Growing Tree

binary search, dfs and similar, divide and conquer, dp, games, implementation, trees

Minimum Influence

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

Good Schedule

dp, greedy

Arrange the Numbers in a Circle

constructive algorithms, implementation, math

Digit String

greedy, implementation, math

Optimal Purchase

implementation, math

The Endians

dp, trees

Wowee Binary String

combinatorics, dp, strings

Roadworks

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

Load Unbalancing

binary search, bitmasks, dp, greedy

Deconstruction Tree

combinatorics, data structures, dp, graphs, trees

Me When Median Problem

binary search, greedy

We Be Flipping (Hard Version)

constructive algorithms, dp, greedy

We Be Flipping (Easy Version)

constructive algorithms, greedy

Absolute Cinema

greedy, math

Slimes on a Line

brute force, greedy, math

Momoyo and the Network

binary search, dfs and similar, dfs and similar, divide and conquer, divide and conquer, dp, trees

Amanojaku and Sequence (Hard Version)

combinatorics, data structures, implementation, math

Amanojaku and Sequence (Easy Version)

combinatorics, math

Sanae, Cross and Color

binary search, data structures, implementation

Cirno and Number (Hard Version)

binary search, dfs and similar, dp, greedy, implementation

Cirno and Number (Easy Version)

binary search, brute force, dp, greedy, implementation

Remilia Plays Soku

games, implementation

Marisa Steals Reimu's Takeout

greedy, implementation

Fallen Leaves

dfs and similar, dp, dp, trees, trees

Drowning

binary search, data structures, math

It Just Keeps Going Sideways

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

It All Went Sideways

binary search, data structures, dp, greedy

Palindromex

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

Snowfall

constructive algorithms, math

Party Monster

greedy

Koshary

implementation, math

Stop Spot

implementation, strings, trees

Inversion Invasion

math, number theory