Build a Contest

data structures, implementation

Silly Mistake

greedy, implementation

Beautiful Divisors

brute force, implementation

Div. 64

implementation

String Modification

brute force, constructive algorithms, implementation, sortings, strings

Game of Robots

implementation

Sonya and Hotels

implementation

Line to Cashier

implementation

Equalizing by Division (easy version)

brute force, implementation

Word Correction

implementation

Gotta Catch Em' All!

implementation

Fill in the Matrix

constructive algorithms, implementation

PIN Codes

greedy, implementation

The Morning Star

combinatorics, data structures, geometry, implementation, math, sortings

Good String

implementation, strings

Anonymous Informant

brute force, dfs and similar, graphs, implementation

Alternating Deck (hard version)

implementation

Nearly Shortest Repeating Substring

brute force, implementation, number theory, strings

Yellow Cards

greedy, implementation, math

Asphalting Roads

implementation

PriceFixed

binary search, greedy, implementation, sortings, two pointers

Cloning Toys

implementation

Obtaining the String

implementation

Nearest Minimums

implementation

Filling the Grid

implementation, math

Summarize to the Power of Two

brute force, greedy, implementation

Powers of Two

brute force, data structures, implementation, math

Fishingprince Plays With Array

constructive algorithms, greedy, implementation, math

MEX maximizing

data structures, greedy, implementation, math

Tea Tasting

binary search, data structures, implementation

Recent Actions

data structures, greedy, implementation, math

Fafa and the Gates

implementation

The Way to Home

dfs and similar, dp, greedy, implementation

Tanya and Toys

greedy, implementation

Stack of Presents

data structures, implementation

Toy Cars

implementation

Be Positive

implementation

Circle Line

implementation

Football Kit

brute force, greedy, implementation

Palindrome Transformation

brute force, greedy, implementation

William the Vigilant

implementation, strings

Memory and Crow

implementation, math

Fair Game

implementation, sortings

Circle Metro

implementation, math

Alexey and Train

implementation

New Year and Days

implementation

Stock Arbitraging

greedy, implementation

Timofey and cubes

constructive algorithms, implementation

TV Subscriptions (Easy Version)

implementation

A New Technique

implementation

Acacius and String

brute force, implementation, strings

Planet Lapituletti

brute force, implementation

Gardener and Tree

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

Tanya and Candies

implementation

Game Shopping

implementation

Students and Shoelaces

brute force, dfs and similar, graphs, implementation

Fridge Lockers

graphs, implementation

k-Amazing Numbers

binary search, data structures, implementation, two pointers

Friends Meeting

brute force, greedy, implementation, math

Vladik and Courtesy

brute force, implementation

Game with Telephone Numbers

games, greedy, implementation

Ksenia and Pan Scales

greedy, implementation

Interview

binary search, implementation, interactive

Meeting on the Line

binary search, geometry, greedy, implementation, math, ternary search

Little Elephant and Problem

implementation, sortings

Dead Pixel

implementation

Tavas and Nafas

brute force, implementation

Perfect Keyboard

dfs and similar, greedy, implementation

A Serial Killer

brute force, implementation, strings

Table Tennis

data structures, implementation

Letters Shop

binary search, implementation, strings

Again?

*special problem, implementation

Right-Left Cipher

implementation, strings

Haiku

implementation, strings

Qingshan Loves Strings 2

constructive algorithms, greedy, implementation

Stages

greedy, implementation, sortings

Paint the Numbers

greedy, implementation, math

Representative Edges

brute force, geometry, implementation, math

Passwords

implementation, math, sortings, strings

Lucky Substring

brute force, implementation

Many Equal Substrings

implementation, strings

Column Swapping

brute force, constructive algorithms, greedy, implementation, sortings

Exam

constructive algorithms, implementation, math

The Number of Products

combinatorics, dp, implementation

Detective Book

implementation

Little Dima and Equation

brute force, implementation, math, number theory

President's Office

implementation

Xenia and Divisors

greedy, implementation

Eugene and an array

binary search, data structures, implementation, two pointers

Bear and Five Cards

constructive algorithms, implementation

Array Destruction

brute force, constructive algorithms, data structures, greedy, implementation, sortings

Pipes

dp, implementation

Erase and Extend (Easy Version)

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

DZY Loves Sequences

dp, implementation, two pointers

A pile of stones

implementation, math

Ostap and Grasshopper

implementation, strings

Lunar New Year and Cross Counting

implementation

Beautiful Numbers

data structures, implementation, math, two pointers

Chat Online

implementation

Permutation Operations

constructive algorithms, greedy, implementation, math