Permutations Harmony

combinatorics, constructive algorithms, greedy, hashing, math

Darius' Wisdom

constructive algorithms, greedy, implementation, sortings

Trapped in the Witch's Labyrinth

constructive algorithms, dfs and similar, graphs, implementation

Rakhsh's Revival

data structures, greedy, implementation, two pointers

King Keykhosrow's Mystery

brute force, chinese remainder theorem, math, number theory

Sakurako and Chefir

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

Kosuke's Sloth

brute force, math, number theory

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

Sakurako's Field Trip

dp, greedy, two pointers

Sakurako and Water

brute force, constructive algorithms, greedy

Sakurako and Kosuke

constructive algorithms, implementation, math

Peanuts

combinatorics, dp, games, math

Balanced

constructive algorithms, data structures, greedy, implementation, math

Genokraken

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

Trinity

binary search, math, sortings, two pointers

Medians

constructive algorithms, greedy, implementation, math

Circuit

greedy, implementation, math, number theory

Penchick and Even Medians

binary search, constructive algorithms, interactive, probabilities

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

Penchick and BBQ Buns

constructive algorithms, math, number theory

Penchick and Satay Sticks

brute force, greedy, sortings

Penchick and Modern Monument

constructive algorithms, dp, greedy, math

The Destruction of the Universe (Hard Version)

combinatorics, math

The Destruction of the Universe (Easy Version)

combinatorics, greedy, math

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

A TRUE Battle

brute force, games, greedy

Minimise Oneness

combinatorics, constructive algorithms, games, math

A Gift From Orangutan

constructive algorithms, greedy, math, sortings

Variance Challenge

flows, graphs, greedy

Message Spread

bitmasks, brute force, combinatorics, dp

Balanced Problem

data structures, dp

Palindrome Everywhere

constructive algorithms, graphs, greedy

Common Generator

brute force, constructive algorithms, math, number theory

Cool Graph

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

New Rating

binary search, data structures, dp, greedy

Replacement

constructive algorithms, games, strings

Set

greedy, math

Alice's Adventures in Addition

bitmasks, brute force, dp, implementation

Alice's Adventures in the Rabbit Hole

combinatorics, dfs and similar, dp, games, greedy, math, probabilities, trees

Alice's Adventures in Cards

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

Alice's Adventures in Cutting Cake

binary search, dp, greedy, two pointers

Alice's Adventures in Permuting

binary search, implementation, math

Alice's Adventures in ''Chess''

brute force, implementation, math

Bit Game (Hard Version)

bitmasks, dp, math

Bit Game (Easy Version)

bitmasks, brute force, games, math

The Endspeaker (Hard Version)

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

The Endspeaker (Easy Version)

binary search, dp, graphs, greedy, implementation, two pointers

Add Zeros

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

Stalin Sort

brute force, greedy

Rectangle Arrangement

geometry, implementation, math

Bermart Ice Cream

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

Best Subsequence

bitmasks, dfs and similar, flows, graph matchings, graphs

Sums of Segments

binary search, data structures, dp, implementation, math

Action Figures

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

Black Cells

binary search, brute force, constructive algorithms, greedy

Perpendicular Segments

constructive algorithms, geometry, greedy, math

Variable Damage

data structures, flows

Choose Your Queries

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

Card Game

combinatorics, dp, fft, greedy, math

Attribute Checks

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

New Game

binary search, brute force, greedy, implementation, sortings, two pointers

Binomial Coefficients, Kind Of

combinatorics, dp, math

Two Screens

binary search, greedy, strings, two pointers

Buying Lemonade

binary search, constructive algorithms, sortings

Profitable Interest Rate

greedy, math

Hills and Pits

data structures, greedy, math, matrices

Tree of Life

dp, greedy, trees

Many Games

brute force, dp, greedy, math, probabilities

C+K+S

constructive algorithms, dfs and similar, graphs, greedy, hashing, implementation, strings

Skipping

binary search, dp, graphs, shortest paths

Concatenation of Arrays

constructive algorithms, greedy, math, sortings

Billetes MX (Hard Version)

binary search, combinatorics, data structures, dsu, graphs

Billetes MX (Easy Version)

2-sat, binary search, combinatorics, constructive algorithms, dfs and similar, dsu, graphs

Asesino (Hard Version)

constructive algorithms, dp, interactive

Asesino (Easy Version)

binary search, brute force, constructive algorithms, implementation, interactive

Gerrymandering

dp, implementation

Kar Salesman

binary search, greedy, math

Bus to Pénjamo

constructive algorithms, greedy, implementation, math

Digital Village (Extreme Version)

data structures, dfs and similar, dp, dsu, graphs, greedy, math, trees

Digital Village (Hard Version)

data structures, dp, dsu, graphs, math, trees

Digital Village (Easy Version)

brute force, data structures, dfs and similar, dp, dsu, fft, graphs, greedy, implementation, math, trees

Boss, Thirsty

dp, greedy, implementation

Adjust The Presentation (Hard Version)

constructive algorithms, data structures, greedy, implementation, sortings

Adjust The Presentation (Easy Version)

constructive algorithms, greedy

Maximize Mex

brute force, greedy, math, number theory

Meaning Mean

data structures, greedy, math, sortings

Count Leaves

dp, math, number theory

Expected Power

bitmasks, dp, math, probabilities

Connect the Dots

brute force, dp, dsu, graphs, math, trees

Bitwise Balancing

bitmasks, hashing, implementation, math, schedules, ternary search

Brightness Begins

binary search, math

Find Minimum Operations

bitmasks, brute force, greedy, math, number theory

All Pairs Segments

implementation, math

Max Plus Size

brute force, dp, greedy

Speedbreaker Counting (Hard Version)

dp, greedy, math

Speedbreaker Counting (Medium Version)

dp, greedy, math