Vasya and Isolated Vertices

constructive algorithms, graphs

Colorful Table

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

Bit Flipping

bitmasks, constructive algorithms, greedy, strings

Salyg1n and the MEX Game

constructive algorithms, data structures, games, greedy, interactive

Queries on a String

implementation, strings

Snow Footprints

greedy, implementation

Anji's Binary Tree

dfs and similar, dp, trees

Accordion

greedy, implementation

Intense Heat

brute force, implementation, math

Substring Removal

combinatorics, math, strings

New Skateboard

dp

Shawarma Tent

brute force, geometry, greedy, implementation

Oh Those Palindromes

constructive algorithms, strings

Reach Median

greedy

Yet Another Crosses Problem

implementation

Funky Numbers

binary search, brute force, implementation

TV Subscriptions (Hard Version)

implementation, two pointers

Xor-tree

dfs and similar, trees

Substring Game in the Lesson

games, greedy, strings

Labs

constructive algorithms, greedy, implementation

Alyona and a Narrow Fridge

binary search, flows, greedy, sortings

New Year and Old Property

bitmasks, brute force, implementation

Brutality

greedy, sortings, two pointers

Bessie's Birthday Cake (Easy Version)

geometry, greedy, math

Painting Pebbles

constructive algorithms, greedy, implementation

New Year and North Pole

geometry, implementation

Game of Credit Cards

data structures, dp, greedy, sortings

Gambling

greedy, sortings

Vasya and Golden Ticket

implementation

Mishka and the Last Exam

greedy

Segment Occurrences

brute force, implementation

Simple Strings

dp, greedy, strings

Sonya and Exhibition

constructive algorithms, greedy, implementation, math

Ela's Fitness and the Luxury Number

binary search, implementation, math

Alarm Clocks Everywhere

math, number theory

Homecoming

binary search, dp, greedy, strings

Maximum splitting

dp, greedy, math, number theory

Find The Bone

implementation

Cinema

implementation, sortings

The Child and Homework

implementation

World Cup

binary search, math

Seat Arrangements

brute force, implementation

Neko Performs Cat Furrier Transform

bitmasks, constructive algorithms, dfs and similar, math

Alyona and copybooks

brute force, implementation

Difference Row

constructive algorithms, implementation, sortings

Economy Game

brute force

String Transformation

greedy, strings

Divisiblity of Differences

implementation, math, number theory

A Prank

greedy, implementation

Cake Assembly Line

brute force, sortings

Art Union

brute force, dp, implementation

Berland National Library

implementation

Magic Forest

brute force

Dividing the numbers

constructive algorithms, graphs, math

Mike and strings

brute force, dp, strings

Bus of Characters

data structures, greedy, implementation

Koala and Lights

implementation, math, number theory

Recursive Queries

binary search, data structures, dfs and similar

Amr and The Large Array

implementation

Lucky Permutation Triple

constructive algorithms, implementation, math

Sasha and Magnetic Machines

greedy, number theory

Browser

implementation

Position in Fraction

math, number theory

Students in Railway Carriage

constructive algorithms, greedy, implementation

Replacement

greedy, implementation, sortings

Strings of Power

implementation, strings, two pointers

Design Tutorial: Learn from Life

Drazil and His Happy Friends

brute force, dsu, meet-in-the-middle, number theory

Chtholly's request

brute force

Vika and Squares

constructive algorithms, implementation

The Text Splitting

brute force, implementation, strings

Shashlik Cooking

dp, greedy, math

Rectangles

combinatorics, math

Expansion coefficient of the array

implementation, math

Leha and Function

combinatorics, greedy, math, number theory, sortings

Forgery

implementation

Playing Cubes

games, greedy, implementation

Dasha and friends

brute force, implementation, math

Order Book

data structures, greedy, implementation, sortings

K-special Tables

constructive algorithms, implementation

Average Sleep Time

data structures, implementation, math

Broken Clock

brute force, implementation

Selection of Personnel

combinatorics, math

A Trivial Problem

brute force, constructive algorithms, math, number theory

Cards

constructive algorithms, dp, math

Valuable Resources

brute force, greedy

Steps

binary search, implementation

Polo the Penguin and Strings

greedy

Petya and Java

implementation, strings

Segments

constructive algorithms, math

Qualifying Contest

constructive algorithms, sortings

Ice Sculptures

*special problem, brute force, number theory

I.O.U.

implementation

Magical Array

math

Beppa and SwerChat

two pointers

Vasya and Football

implementation

Cosmic Tables

data structures, implementation

Counting-out Rhyme

implementation

MUH and Important Things

implementation, sortings

Plant

math