Effects of Anti Pimples

combinatorics, number theory, sortings

Berpizza

data structures, implementation

Balanced Substring

dp, implementation

MUH and Cube Walls

string suffix structures, strings

k-th equality

brute force, implementation, math

Design Tutorial: Learn from Life

A/B Matrix

constructive algorithms, greedy, math

Tree Painting

dfs and similar, dp, trees

Same Count One

brute force, constructive algorithms, greedy, implementation, two pointers

Strings of Power

implementation, strings, two pointers

Drazil and His Happy Friends

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

Power Products

hashing, math, number theory

Duff and Weight Lifting

greedy

Yet Another Minimization Problem

dp, greedy, math

Minimize the error

data structures, greedy, sortings

Tennis Championship

combinatorics, constructive algorithms, greedy, math

Megacity

binary search, greedy, implementation, sortings

Dr. Evil Underscores

bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees

Circular Dance

implementation

Inna and New Matrix of Candies

brute force, implementation, schedules

Switches and Lamps

implementation

New Reform

data structures, dfs and similar, dsu, graphs, greedy

Non-square Equation

binary search, brute force, math

Intercepted Message

greedy, implementation

Explorer Space

dp, graphs, shortest paths

Rescue Nibel!

combinatorics, data structures, sortings

Numbers

implementation, math

Physical Education Lesson

brute force, math, number theory

Restoring Painting

brute force, constructive algorithms, math

Sereja and Coat Rack

implementation

Interview with Oleg

implementation, strings

Rating System

binary search, brute force, data structures, dp, dsu, greedy, math, two pointers

Minesweeper

implementation

Problem with Random Tests

brute force, dp, greedy, probabilities

Print Check

constructive algorithms, implementation

Clear the String

dp

Ranom Numbers

brute force, dp, greedy, math, strings

Developing Skills

implementation, math, sortings

Insert a Progression

brute force, constructive algorithms, greedy

Paint the Digits

constructive algorithms, greedy, implementation

Rock, Paper, Scissors

brute force, constructive algorithms, flows, greedy, math

New Year's Problem

binary search, greedy, sortings

Vicious Keyboard

brute force

Paint the Tree

brute force, constructive algorithms, dp, graphs, implementation, trees

Views Matter

greedy, implementation, sortings

Yet Another Monster Killing Problem

binary search, data structures, dp, greedy, sortings, two pointers

Spanning Tree with Maximum Degree

graphs

Serval and Parenthesis Sequence

greedy, strings

Li Hua and Chess

constructive algorithms, greedy, interactive

Heap Operations

constructive algorithms, data structures, greedy

Trailing Loves (or L'oeufs?)

brute force, implementation, math, number theory

Producing Snow

binary search, data structures

The Smallest String Concatenation

sortings, strings

Anton and Fairy Tale

binary search, math

New Year Present

constructive algorithms, implementation

Sequence Master

brute force, constructive algorithms, math

Battling with Numbers

combinatorics, math, number theory

Ilya and tic-tac-toe game

brute force, implementation

Array

bitmasks, implementation, two pointers

Born This Way

binary search, brute force, two pointers

Prime Graph

constructive algorithms, greedy, math, number theory

Data Center

brute force, implementation

Exam in BerSU (hard version)

brute force, data structures, greedy, math

Exam in MAC

binary search, combinatorics, implementation, math

Standard Free2play

dp, greedy, math

String Typing

implementation, strings

Bicolorings

bitmasks, dp

Technogoblet of Fire

implementation, sortings

Tree with Maximum Cost

dfs and similar, dp, trees

Maximal Intersection

greedy, math, sortings

The Number Of Good Substrings

binary search, bitmasks, brute force

Ivan the Fool and the Probability Theory

combinatorics, dp, math

Pasha and Tea

constructive algorithms, implementation, math, sortings

Chtholly's request

brute force

Love Rescue

dfs and similar, dsu, graphs, greedy, strings

Subtractions

math, number theory

Ping-Pong (Easy Version)

dfs and similar, graphs

String Coloring (easy version)

constructive algorithms, dp, graphs, greedy, sortings

Tea Queue

implementation

The Number of Imposters

constructive algorithms, dfs and similar, dp, dsu, graphs

Tree Tag

dfs and similar, dp, games, trees

Path Prefixes

binary search, data structures, dfs and similar, trees

Cutting Banner

brute force, implementation

History

sortings

Vika and Squares

constructive algorithms, implementation

Climbing the Tree

binary search, math

Good Matrix Elements

implementation

Letter

dp

Sorting Railway Cars

constructive algorithms, greedy

Labyrinth

graphs, shortest paths

World Cup

constructive algorithms, implementation

Code obfuscation

greedy, implementation, strings

Remove the Substring (hard version)

binary search, greedy, implementation, two pointers

Shashlik Cooking

dp, greedy, math

Suit and Tie

greedy, implementation, math

Jumping Ball

implementation

Gambling

data structures, dp, greedy, math

Forgotten Episode

implementation

The Text Splitting

brute force, implementation, strings

Bishwock

dp, greedy