Blown Garland

brute force, implementation, number theory

Shell Game

constructive algorithms, implementation, math

Unimodal Array

implementation

Roman and Browser

implementation

Candies

binary search, implementation

Chess For Three

implementation

Quasi-palindrome

brute force, implementation

Queue on Bus Stop

implementation

Card Game

greedy, implementation

Search for Pretty Integers

brute force, implementation

Ela Sorting Books

greedy, implementation, strings

Manhattan Subarrays

brute force, geometry, greedy, implementation

Worms Evolution

implementation

Equal Sums

implementation, sortings

Fashion in Berland

implementation

Bear and Game

implementation

Rooks Defenders

data structures, implementation

Tetris

implementation

Minimum Ternary String

greedy, implementation

Alena's Schedule

implementation

inc ARG

implementation

Vasily the Bear and Triangle

implementation, math

Labs

constructive algorithms, greedy, implementation

Beautiful Regional Contest

greedy, implementation

Mike and Fax

brute force, implementation, strings

SwapSort

greedy, implementation, sortings

Planning The Expedition

binary search, brute force, implementation

New Year and Old Property

bitmasks, brute force, implementation

Zuhair and Strings

brute force, implementation, strings

Turtle vs. Rabbit Race: Optimal Trainings

binary search, implementation, math, ternary search

Line Empire

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

Visiting a Friend

greedy, implementation

Exams

implementation, math

Memory and Trident

implementation, strings

Draw!

greedy, implementation

Grid game

constructive algorithms, implementation

Phase Shift

dfs and similar, dsu, graphs, greedy, implementation, strings

Comparing Two Long Integers

implementation, strings

Bear and Strings

brute force, greedy, implementation, math, strings

Where is the Pizza?

data structures, dfs and similar, dsu, graphs, implementation, math

Painting Pebbles

constructive algorithms, greedy, implementation

Minimum number of steps

combinatorics, greedy, implementation, math

Tokitsukaze and Mahjong

brute force, implementation

George and Sleep

implementation

Indian Summer

implementation

Arpa and a research in Mexican wave

implementation, math

Complex Market Analysis

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

Queries for the Array

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

Nezzar and Symmetric Array

implementation, math, sortings

Regular Bracket Sequence

greedy, implementation

RGB Substring (hard version)

data structures, dp, implementation, two pointers

Pairs

graphs, implementation

Sanatorium

binary search, constructive algorithms, greedy, implementation, math

Hits Different

data structures, dp, implementation, math

Watering an Array

brute force, greedy, implementation, math

New Year and North Pole

geometry, implementation

Nick and Array

greedy, implementation

Books Queries

implementation

Postcard

constructive algorithms, implementation

Bear and Prime Numbers

binary search, brute force, data structures, dp, implementation, math, number theory

DZY Loves Hash

implementation

Permutation Counting

binary search, greedy, implementation, math, sortings

Mahmoud and Ehab and the MEX

greedy, implementation

The Artful Expedient

brute force, implementation

Face Detection

implementation, strings

Phone numbers

implementation

Vanya and Table

implementation, math

Program

data structures, dp, implementation, strings

Crossword solving

brute force, implementation, strings

Vasya and Golden Ticket

implementation

Proper Nutrition

brute force, implementation, number theory

Complementary XOR

constructive algorithms, implementation

Chat Servers Outgoing Traffic

implementation

Vasya and Digital Root

constructive algorithms, implementation

Segment Occurrences

brute force, implementation

Text Volume

implementation

Tokitsukaze and Discard Items

implementation, two pointers

Close Tuples (hard version)

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

Tree Cutting

binary search, dp, greedy, implementation, trees

Robot Breakout

implementation

Anastasia and pebbles

implementation, math

Sonya and Exhibition

constructive algorithms, greedy, implementation, math

Grandfather Dovlet’s calculator

implementation

Ela's Fitness and the Luxury Number

binary search, implementation, math

Balloons

constructive algorithms, implementation

Palindromic Times

implementation, strings

Hyperset

brute force, data structures, implementation

The Child and Set

bitmasks, greedy, implementation, sortings

Binary Table (Easy Version)

constructive algorithms, implementation

Mahmoud and Ehab and the message

dsu, greedy, implementation

Fixed Points

brute force, implementation, math

Saitama Destroys Hotel

implementation, math

Odd-Even Subsequence

binary search, dp, dsu, greedy, implementation

Vasya and Multisets

brute force, dp, greedy, implementation, math

Interview

brute force, implementation

XOR and OR

constructive algorithms, implementation, math

Infinite Sequence

implementation, math

Caisa and Sugar

brute force, implementation

The Time

implementation

Basic Diplomacy

brute force, constructive algorithms, greedy, implementation