Asphalting Roads

implementation

Yellow Cards

greedy, implementation, math

Anonymous Informant

brute force, dfs and similar, graphs, implementation

Alternating Deck (hard version)

implementation

The Morning Star

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

Good String

implementation, strings

Fill in the Matrix

constructive algorithms, implementation

PIN Codes

greedy, implementation

Gotta Catch Em' All!

implementation

Word Correction

implementation

Equalizing by Division (easy version)

brute force, implementation

Line to Cashier

implementation

String Modification

brute force, constructive algorithms, implementation, sortings, strings

Game of Robots

implementation

Sonya and Hotels

implementation

Beautiful Divisors

brute force, implementation

Div. 64

implementation

Two Cakes

binary search, brute force, implementation

Silly Mistake

greedy, implementation

Build a Contest

data structures, implementation

Plus from Picture

dfs and similar, implementation, strings

Sinking Ship

implementation, sortings, strings

Best Subsegment

implementation, math

Vladik and flights

constructive algorithms, greedy, implementation

Valera and Tubes

constructive algorithms, dfs and similar, implementation

Tiling Challenge

greedy, implementation

Wet Shark and Bishops

combinatorics, implementation

Salem and Sticks

brute force, implementation

LuoTianyi and the Show

greedy, implementation

Valera and Plates

greedy, implementation

Hills And Valleys

brute force, implementation

Elections

implementation, math

Colorful Table

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

Chess Cheater

greedy, implementation, sortings

Alex and broken contest

implementation, strings

Meeting of Old Friends

implementation, math

Local Extrema

brute force, implementation

Bouncing Ball

brute force, dp, implementation

Find Square

implementation

Monsters And Spells

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

Escape from Stones

constructive algorithms, data structures, implementation, two pointers

New Year and Ascent Sequence

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

New Year and the Treasure Geolocation

brute force, constructive algorithms, greedy, implementation

Building a Fence

dp, greedy, implementation, two pointers

Queries on a String

implementation, strings

Soroban

implementation

Snow Footprints

greedy, implementation

Shower Line

brute force, implementation

Fault-tolerant Network

brute force, data structures, implementation

Commentary Boxes

implementation, math

Zero-Sum Prefixes

brute force, data structures, dp, greedy, implementation

Approximating a Constant Range

dp, implementation, two pointers

Vasya and Books

implementation, math

Ilya and a Colorful Walk

greedy, implementation

If at first you don't succeed...

implementation

Diagonal Walking

implementation

Accordion

greedy, implementation

Minimum Binary Number

implementation

Diversity

greedy, implementation, strings

Shooshuns and Sequence

brute force, implementation

Book Reading

implementation

Intense Heat

brute force, implementation, math

Hongcow Learns the Cyclic Shift

implementation, strings

Wizards and Demonstration

implementation, math

Candies!

data structures, dp, implementation, math

Ticks

greedy, implementation

Links and Pearls

implementation, math

Shawarma Tent

brute force, geometry, greedy, implementation

An abandoned sentiment from past

constructive algorithms, greedy, implementation, sortings

Hamster Farm

implementation

Inbox (100500)

implementation

Gourmet Cat

implementation, math

Wilbur and Array

greedy, implementation

Count Triangles

binary search, implementation, math, two pointers

RGB Substring (easy version)

implementation

Collecting Beats is Fun

implementation

Catch Overflow!

data structures, expression parsing, implementation

Plug-in

implementation

Lala Land and Apple Trees

brute force, implementation, sortings

Decreasing String

implementation, strings

A Blend of Springtime

implementation, strings

Odd sum

dp, greedy, implementation

Valeriy and Deque

data structures, implementation

Funky Numbers

binary search, brute force, implementation

Restoring Password

implementation, strings

Timofey and a tree

dfs and similar, dp, dsu, graphs, implementation, trees

TV Subscriptions (Hard Version)

implementation, two pointers

Torn Lucky Ticket

brute force, dp, hashing, implementation, math

Uniqueness

binary search, brute force, implementation, two pointers

Letter

implementation

Text Document Analysis

expression parsing, implementation, strings

Yet Another Crosses Problem

implementation

Blown Garland

brute force, implementation, number theory

Shell Game

constructive algorithms, implementation, math

Roman and Browser

implementation

Unimodal Array

implementation

Chess For Three

implementation

Counting Rectangles

brute force, data structures, dp, implementation

Queue on Bus Stop

implementation

Quasi-palindrome

brute force, implementation