Ela Sorting Books

greedy, implementation, strings

Manhattan Subarrays

brute force, geometry, greedy, implementation

Worms Evolution

implementation

Equal Sums

implementation, sortings

Bear and Game

implementation

Minimum Ternary String

greedy, implementation

Alena's Schedule

implementation

Tetris

implementation

Fashion in Berland

implementation

Rooks Defenders

data structures, implementation

Vasily the Bear and Triangle

implementation, math

Mike and Fax

brute force, implementation, strings

Beautiful Regional Contest

greedy, implementation

inc ARG

implementation

Candies

binary search, implementation

Labs

constructive algorithms, greedy, implementation

SwapSort

greedy, implementation, sortings

Planning The Expedition

binary search, brute force, implementation

Vlad and an Odd Ordering

binary search, bitmasks, data structures, dp, implementation, math, number theory

Zuhair and Strings

brute force, implementation, strings

New Year and Old Property

bitmasks, brute force, implementation

Card Game

greedy, implementation

Visiting a Friend

greedy, implementation

Exams

implementation, math

Line Empire

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

Memory and Trident

implementation, strings

Grid game

constructive algorithms, implementation

Phase Shift

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

Turtle vs. Rabbit Race: Optimal Trainings

binary search, implementation, math, ternary search

Painting Pebbles

constructive algorithms, greedy, implementation

Minimum number of steps

combinatorics, greedy, implementation, math

Bear and Strings

brute force, greedy, implementation, math, strings

Comparing Two Long Integers

implementation, strings

George and Sleep

implementation

Arpa and a research in Mexican wave

implementation, math

Where is the Pizza?

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

Nezzar and Symmetric Array

implementation, math, sortings

Complex Market Analysis

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

Sanatorium

binary search, constructive algorithms, greedy, implementation, math

Draw!

greedy, implementation

Regular Bracket Sequence

greedy, implementation

New Year and North Pole

geometry, implementation

Tokitsukaze and Mahjong

brute force, implementation

Queries for the Array

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

Nick and Array

greedy, implementation

Postcard

constructive algorithms, implementation

Indian Summer

implementation

Books Queries

implementation

Bear and Prime Numbers

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

The Artful Expedient

brute force, implementation

Mahmoud and Ehab and the MEX

greedy, implementation

Face Detection

implementation, strings

DZY Loves Hash

implementation

Vanya and Table

implementation, math

Hits Different

data structures, dp, implementation, math

Crossword solving

brute force, implementation, strings

Vasya and Golden Ticket

implementation

Watering an Array

brute force, greedy, implementation, math

RGB Substring (hard version)

data structures, dp, implementation, two pointers

Program

data structures, dp, implementation, strings

Pairs

graphs, implementation

Phone numbers

implementation

Vasya and Digital Root

constructive algorithms, implementation

Proper Nutrition

brute force, implementation, number theory

Text Volume

implementation

Chat Servers Outgoing Traffic

implementation

Complementary XOR

constructive algorithms, implementation

Segment Occurrences

brute force, implementation

Anastasia and pebbles

implementation, math

Sonya and Exhibition

constructive algorithms, greedy, implementation, math

Close Tuples (hard version)

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

Grandfather Dovlet’s calculator

implementation

Balloons

constructive algorithms, implementation

Hyperset

brute force, data structures, implementation

Ela's Fitness and the Luxury Number

binary search, implementation, math

Palindromic Times

implementation, strings

Binary Table (Easy Version)

constructive algorithms, implementation

Saitama Destroys Hotel

implementation, math

The Child and Set

bitmasks, greedy, implementation, sortings

Fixed Points

brute force, implementation, math

Vasya and Multisets

brute force, dp, greedy, implementation, math

Interview

brute force, implementation

Odd-Even Subsequence

binary search, dp, dsu, greedy, implementation

Tokitsukaze and Discard Items

implementation, two pointers

Caisa and Sugar

brute force, implementation

XOR and OR

constructive algorithms, implementation, math

Basic Diplomacy

brute force, constructive algorithms, greedy, implementation

Robot Breakout

implementation

Mahmoud and Ehab and the message

dsu, greedy, implementation

The Time

implementation

Infinite Sequence

implementation, math

Lucky Year

implementation

Restore Modulo

implementation, math

The Bits

implementation, math

Antipalindrome

brute force, implementation, strings

Robot on the Board 1

implementation

Lever

implementation, math

Sereja and Mugs

implementation

Elevator or Stairs?

implementation

Replacement

constructive algorithms, data structures, implementation