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

Higher Order Functions

implementation, strings

Easy Scheduling

implementation, math

Knitting Batik

implementation, math

Jeopardy of Dropped Balls

binary search, brute force, dsu, implementation

Coloring

combinatorics, constructive algorithms, implementation, math

The Strongest Build

binary search, brute force, data structures, dfs and similar, graphs, greedy, hashing, implementation

Book

binary search, brute force, data structures, dp, graphs, implementation, sortings

Sweepstake

*special problem, brute force, constructive algorithms, implementation, math

Rhyme

*special problem, implementation

Playoff Restoration

bitmasks, brute force, hashing, implementation, meet-in-the-middle

Inconvenient Pairs

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

Balanced Substring

implementation

One-Four Overload

2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation

Expression Evaluation Error

constructive algorithms, greedy, implementation, math

Domino Disaster

implementation, strings

Four Vertices

constructive algorithms, data structures, graphs, greedy, implementation, shortest paths

Points Movement

data structures, dp, greedy, implementation, sortings

Seating Arrangements (hard version)

data structures, greedy, implementation, sortings, two pointers

Scenes From a Memory

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

Simply Strange Sort

brute force, implementation, sortings

Polycarp and String Transformation

binary search, implementation, sortings, strings

Infinity Table

implementation, math

Dislike of Threes

implementation

Compressed Bracket Sequence

brute force, implementation

Take Your Places!

implementation

Coin Rows

brute force, constructive algorithms, dp, implementation

Mikasa

binary search, bitmasks, greedy, implementation

Reverse String

brute force, dp, hashing, implementation, strings

Domino (hard version)

constructive algorithms, implementation, math

Excellent Arrays

binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers

Manhattan Subarrays

brute force, geometry, greedy, implementation

Gregor and the Pawn Game

dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation

Air Conditioners

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

Alphabetical Strings

greedy, implementation, strings

Shortest Path with Obstacle

implementation, math

Need for Pink Slips

bitmasks, brute force, dfs and similar, implementation, math, probabilities

Priority Queue

combinatorics, dp, implementation, math, ternary search

Pleasant Pairs

brute force, implementation, math, number theory

Pretty Permutations

constructive algorithms, greedy, implementation

Game with Cards

binary search, constructive algorithms, data structures, dp, greedy, implementation

PriceFixed

binary search, greedy, implementation, sortings, two pointers

Love Song

dp, implementation, strings

Funny Substrings

data structures, hashing, implementation, matrices, strings

Erase and Extend (Easy Version)

binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers

Challenging Cliffs

constructive algorithms, greedy, implementation, math

Omkar and Medians

data structures, greedy, implementation

String Distance

binary search, brute force, data structures, hashing, implementation, strings

Playoff Tournament

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

Unstable String

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

Fair Playoff

brute force, implementation

Histogram Ugliness

greedy, implementation, math

Colour the Flag

brute force, implementation

Sweets

*special problem, data structures, implementation

Nearest Point Function

*special problem, implementation

Travel to Bertown

*special problem, implementation, math

Uniform String

*special problem, implementation

Зингер | color

*special problem, implementation

Putting Plates

constructive algorithms, implementation

MEX Tree

combinatorics, dfs and similar, implementation, math, trees

Sequence Pair Weight

hashing, implementation, math