Array

bitmasks, implementation, two pointers

Ilya and tic-tac-toe game

brute force, implementation

Data Center

brute force, implementation

Exam in MAC

binary search, combinatorics, implementation, math

String Typing

implementation, strings

Technogoblet of Fire

implementation, sortings

Pasha and Tea

constructive algorithms, implementation, math, sortings

Tea Queue

implementation

Cutting Banner

brute force, implementation

Vika and Squares

constructive algorithms, implementation

Good Matrix Elements

implementation

World Cup

constructive algorithms, implementation

Code obfuscation

greedy, implementation, strings

Remove the Substring (hard version)

binary search, greedy, implementation, two pointers

Suit and Tie

greedy, implementation, math

Jumping Ball

implementation

Forgotten Episode

implementation

The Text Splitting

brute force, implementation, strings

Equal Frequencies

brute force, constructive algorithms, greedy, implementation, sortings, strings

Umka and a Long Flight

constructive algorithms, implementation, math

Checking the Calendar

implementation

Minimum Euler Cycle

constructive algorithms, graphs, greedy, implementation

Cross Coloring

data structures, implementation, math

Promising String (easy version)

brute force, implementation, math, strings

Bear and Reverse Radewoosh

implementation

Lucky Conversion

greedy, implementation

Password Check

*special problem, implementation

Matrix and Shifts

brute force, constructive algorithms, greedy, implementation

Valera and Fruits

greedy, implementation

0, 1, 2, Tree!

bitmasks, brute force, greedy, implementation, trees

Bank Robbery

brute force, implementation

Cat Party (Hard Edition)

data structures, implementation

Social Network

dsu, graphs, greedy, implementation, trees

Forgery

implementation

Postcards and photos

implementation

Expansion coefficient of the array

implementation, math

Playing Cubes

games, greedy, implementation

Tic-tac-toe

brute force, games, implementation

Opposites Attract

implementation, math

Compress Words

brute force, hashing, implementation, string suffix structures, strings

Sereja and Array

implementation

HDD is Outdated Technology

implementation, math

Fox and Cross

greedy, implementation

Lakes in Berland

dfs and similar, dsu, graphs, greedy, implementation

Dasha and friends

brute force, implementation, math

Vasya's Calendar

implementation

Japanese Crosswords Strike Back

implementation

Smallest Word

constructive algorithms, greedy, implementation

Diplomas and Certificates

implementation, math

Colorful Field

implementation, sortings

Gena's Code

implementation, math

Cat Party (Easy Edition)

data structures, implementation

Mancala

brute force, implementation

Order Book

data structures, greedy, implementation, sortings

The Party and Sweets

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

Painting the Array I

constructive algorithms, data structures, dp, greedy, implementation

Dima and To-do List

brute force, implementation

Array Division

binary search, data structures, implementation

Lunar New Year and Food Ordering

data structures, implementation

Series of Crimes

brute force, geometry, implementation

Fake News (easy)

implementation, strings

Dima and Staircase

data structures, implementation

Group of Students

brute force, greedy, implementation

Power Consumption Calculation

implementation

New Year and Curling

brute force, geometry, implementation, math

Vasya and Basketball

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

Merge Equals

data structures, implementation

Cows and Poker Game

brute force, implementation

Glass Carving

binary search, data structures, implementation

K-special Tables

constructive algorithms, implementation

Fortune Telling

implementation, number theory

Shell Game

implementation

Young Photographer

implementation

Ira and Flamenco

combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers

Mr. Kitayuta's Gift

brute force, implementation, strings

Broken Clock

brute force, implementation

Sereja and Stairs

greedy, implementation, sortings

Ramesses and Corner Inversion

constructive algorithms, greedy, implementation, math

Average Sleep Time

data structures, implementation, math

Final Countdown

implementation, math, number theory

Rudolf and Snowflakes (hard version)

binary search, brute force, implementation, math

Determine Line

implementation

Oleg and shares

implementation, math

Candies

implementation

University Classes

implementation

L-shapes

dfs and similar, implementation

Case of Matryoshkas

implementation

Cows and Sequence

constructive algorithms, data structures, implementation

League of Leesins

constructive algorithms, implementation

Pizza Separation

brute force, implementation

Vladik and Complicated Book

implementation, sortings

Bombs

greedy, implementation, sortings

Extra Element

implementation, math

Appending Mex

implementation

Covered Points Count

data structures, implementation, sortings

Different Rules

constructive algorithms, greedy, implementation, math

Long Path

dp, implementation

Inna and Choose Options

implementation

Candy Party (Easy Version)

bitmasks, constructive algorithms, graphs, greedy, implementation, math

Tokitsukaze and Good 01-String (hard version)

dp, greedy, implementation