Reverse Sort Sum

constructive algorithms, data structures, greedy, implementation, math, two pointers

Line Empire

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

Red Versus Blue

constructive algorithms, greedy, implementation, math

Gojou and Matrix Game

data structures, dp, games, hashing, implementation, math, number theory, sortings

Marin and Photoshoot

constructive algorithms, implementation, math

Bracket Sequence Deletion

greedy, implementation

Alice and the Cake

data structures, greedy, implementation, sortings

Maximum Cake Tastiness

brute force, greedy, implementation, sortings

Fault-tolerant Network

brute force, data structures, implementation

Playoff

implementation

Vitaly and Advanced Useless Algorithms

dp, greedy, implementation

Rescheduling the Exam

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

Twist the Permutation

brute force, constructive algorithms, implementation, math

Weight of the System of Nested Segments

greedy, hashing, implementation, sortings

Deletions of Two Adjacent Letters

implementation, strings

Game of Ball Passing

greedy, implementation

Game

implementation

Air Reform

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

Serious Business

data structures, divide and conquer, dp, implementation, shortest paths

Tyler and Strings

combinatorics, data structures, implementation

Madoka and the Elegant Gift

brute force, constructive algorithms, graphs, implementation

Madoka and Math Dad

implementation, math

Playing Around the Table

constructive algorithms, greedy, implementation

Weight the Tree

constructive algorithms, dfs and similar, dp, implementation, trees

Expand the Path

brute force, combinatorics, data structures, implementation, math

Cross Coloring

data structures, implementation, math

Increase Subarray Sums

brute force, dp, greedy, implementation

Anti-Fibonacci Permutation

brute force, constructive algorithms, implementation

Doors and Keys

implementation

Repetitions Decoding

constructive algorithms, implementation, sortings

Colorful Operations

brute force, data structures, implementation

Big Brush

constructive algorithms, data structures, greedy, implementation

Best Pair

binary search, brute force, implementation

Andrew and Stones

greedy, implementation

Fibonacci Additions

brute force, data structures, hashing, implementation, math

ABC

implementation

Grid Xor

constructive algorithms, greedy, implementation, interactive, math

Meximum Array

binary search, constructive algorithms, greedy, implementation, math, two pointers

Not Splitting

geometry, graphs, greedy, implementation, shortest paths

Not Escaping

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

Not Shading

constructive algorithms, implementation

Monsters And Spells

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

Binary Spiders

bitmasks, data structures, implementation, math, sortings, trees

Masha-forgetful

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

Make AP

implementation, math

Robot Cleaner Revisit

implementation, math, probabilities

Game on Ranges

brute force, dfs and similar, implementation, sortings

Robot Cleaner

brute force, implementation, math

Strange Instructions

data structures, greedy, implementation

New School

binary search, data structures, dp, greedy, implementation, sortings

Integers Shop

data structures, greedy, implementation

Replace the Numbers

constructive algorithms, data structures, dsu, implementation

BA-String

brute force, dp, greedy, implementation, math

Equal or Not Equal

constructive algorithms, dsu, implementation

MEX and Increments

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

Wrong Addition

implementation

Squares and Cubes

implementation, math

Square String?

implementation, strings

Reverse

bitmasks, constructive algorithms, dfs and similar, implementation, math, strings

Missing Bigram

implementation

Christmas Chocolates

dfs and similar, dp, games, graphs, implementation, math, number theory, shortest paths, trees

Too Many Impostors (hard version)

constructive algorithms, implementation, interactive, math

Too Many Impostors (easy version)

constructive algorithms, implementation, interactive

Representative Edges

brute force, geometry, implementation, math

Integer Diversity

implementation

Absent Remainder

greedy, implementation, sortings

Long Comparison

implementation, math

AmShZ and G.O.A.T.

binary search, brute force, greedy, implementation, math

Social Network

dsu, graphs, greedy, implementation, trees

Complex Market Analysis

binary search, dp, implementation, number theory, schedules, two pointers

William the Vigilant

implementation, strings

Divide and Multiply

greedy, implementation, math, number theory

MEX counting

combinatorics, dp, implementation

The Cells on the Paper

binary search, implementation, sortings

Robot on the Board 2

brute force, dfs and similar, graphs, implementation

Robot on the Board 1

implementation

Linear Keyboard

implementation, strings

Red-Blue Matrix

brute force, constructive algorithms, implementation, sortings

Update Files

greedy, implementation, math

Array Equalizer

binary search, greedy, implementation, math, number theory, sortings, two pointers

Treelabeling

bitmasks, constructive algorithms, dfs and similar, games, greedy, implementation, trees

Dominant Character

brute force, greedy, implementation, strings

October 18, 2017

combinatorics, dp, implementation, math

Divine Array

constructive algorithms, implementation

Two Subsequences

implementation

Staircases

brute force, combinatorics, data structures, dfs and similar, dp, implementation, math

Training Session

combinatorics, data structures, geometry, implementation, math

Delete Two Elements

data structures, dp, implementation, math, two pointers

Groups

brute force, implementation

Computer Game

brute force, dfs and similar, dp, implementation

Rubik's Cube Coloring (hard version)

brute force, dp, implementation, math, trees

Red-Black Number

dfs and similar, dp, implementation, math, meet-in-the-middle

Gardener and Tree

brute force, data structures, dfs and similar, greedy, implementation, trees

Hemose in ICPC ?

binary search, dfs and similar, implementation, interactive, math, number theory, trees

Life of a Flower

implementation

Train Maintenance

brute force, data structures, implementation

Portal

brute force, data structures, dp, greedy, implementation

Ticks

greedy, implementation

Shifting Sort

implementation, sortings

Kingdom of Islands

brute force, graphs, implementation