Interesting Sections

data structures, divide and conquer, meet-in-the-middle, two pointers

William The Oblivious

bitmasks, data structures, dp, matrices

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

Alphabetic Tree

binary search, data structures, dfs and similar, hashing, string suffix structures, strings, trees

MEX counting

combinatorics, dp, implementation

The Cells on the Paper

binary search, implementation, sortings

Dominoes

combinatorics, fft, graphs, math, number theory

Game Master

data structures, dfs and similar, dp, graphs, greedy, two pointers

Build the Permutation

constructive algorithms, greedy

Find Array

constructive algorithms, math

Banquet Preparations 2

greedy, sortings, two pointers

Banquet Preparations 1

greedy

Robot on the Board 2

brute force, dfs and similar, graphs, implementation

Robot on the Board 1

implementation

Blue-Red Permutation

greedy, math, sortings

Minimum Extraction

brute force, sortings

Odd Grasshopper

math

Linear Keyboard

implementation, strings

Tree Queries

brute force, dp, trees

Arena

combinatorics, dp, math

Red-Blue Matrix

brute force, constructive algorithms, implementation, sortings

Banknotes

greedy, number theory

Update Files

greedy, implementation, math

AB Balance

strings

PalindORme

combinatorics, dp

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

Reverse Sort

greedy, sortings

A.M. Deviation

math, number theory

XOR Specia-LIS-t

Era

greedy

October 18, 2017

combinatorics, dp, implementation, math

A Perfect Problem

combinatorics, dp, math

Artistic Partition

divide and conquer, dp, number theory

Extreme Extension

dp, greedy, math, number theory

Moderate Modular Mode

constructive algorithms, math, number theory

Di-visible Confusion

constructive algorithms, math, number theory

Divine Array

constructive algorithms, implementation

Two Subsequences

implementation

Two Sorts

binary search, dfs and similar, math, meet-in-the-middle

Phys Ed Online

data structures, dp, greedy

Difficult Mountain

data structures, dp, greedy, sortings

Optimal Insertion

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

Frog Traveler

data structures, dfs and similar, dp, graphs, shortest paths, two pointers

Array Elimination

bitmasks, greedy, math, number theory

Robot Factory

bitmasks, dfs and similar

Party Organization

brute force, math, probabilities

Array Game

games, greedy, two pointers

Bob's Beautiful Array

bitmasks, brute force, greedy

Desert

data structures, graphs

Hidden Fortress

interactive, math

Shortest path

brute force, geometry, math, shortest paths

Mars

hashing

Two Arrays

data structures, matrices

Bubble Popping

Bubble Strike

combinatorics, math, probabilities, ternary search

Restaurant Game

Weights

constructive algorithms, greedy, two pointers

The Sum of Good Numbers

hashing, math, string suffix structures, strings

RBS

binary search, bitmasks, brute force, data structures, dp

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

Ideal Farm

constructive algorithms, math

Rubik's Cube Coloring (hard version)

brute force, dp, implementation, math, trees

Rubik's Cube Coloring (easy version)

combinatorics, math

The Number of Imposters

constructive algorithms, dfs and similar, dp, dsu, graphs

Make Them Equal

brute force, greedy, math, strings

Special Numbers

bitmasks, math

Consecutive Sum Riddle

math

Changing Brackets

constructive algorithms, data structures, dp, greedy

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

Half of Same

brute force, math, number theory

All are Same

math, number theory

Save More Mice

binary search, greedy, greedy

Make it Divisible by 25

dfs and similar, dp, greedy, math, math

Elections

math

Alice and Recoloring 2

constructive algorithms, flows, graph matchings, greedy

Alice and Recoloring 1

constructive algorithms, greedy

Bored Bakry

bitmasks, greedy, math, two pointers

Hemose in ICPC ?

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

Bakry and Partitioning

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

Hemose Shopping

constructive algorithms, dsu, math, sortings

Gamer Hemose

binary search, greedy, math, sortings

Jumping Through the Array

binary search, data structures, graphs, two pointers

Omkar and Mosaic

combinatorics, constructive algorithms, math

Poachers

dp, games, graphs, trees

Non-equal Neighbours

combinatorics, dp, math

Frequency Queries

data structures, dfs and similar, trees

Yet Another Sorting Problem

data structures, math

Minimize Distance

greedy

Array Eversion

greedy

Life of a Flower

implementation