Mysterious Code

dp, strings

Sofa Thief

brute force, implementation

Changing a String

dp

Circle of Numbers

brute force, dfs and similar, implementation

MYSTERIOUS LANGUAGE

*special problem

Nanami's Digital Board

dsu, implementation

Subway Innovation

greedy, math, two pointers

Numbers

constructive algorithms, implementation

Valera and Swaps

constructive algorithms, dsu, graphs, implementation, math, string suffix structures

Frog Jumping

dfs and similar, math, number theory

Number Transformation

dp, greedy, number theory

Neural Network country

dp, matrices

Little Elephant and Furik and Rubik

math, probabilities

Bubble Strike

combinatorics, math, probabilities, ternary search

Bulmart

binary search, dfs and similar

Lemmings

binary search

First Digit Law

dp, math, probabilities

Journey

brute force, constructive algorithms, implementation

String Mark

combinatorics, math, strings

Bulbo

dp, greedy

World Eater Brothers

dfs and similar, dp, greedy, trees

Social Network

greedy, two pointers

Hexagons

binary search, implementation, math

Level Generation

binary search, math, ternary search

Knights

geometry, graphs, shortest paths, sortings

Encryption (medium)

dp

Playlist

math, probabilities, sortings

Beautiful IP Addresses

brute force

Maximum Questions

data structures, dp, strings

Hostname Aliases

*special problem, binary search, data structures, implementation, sortings, strings

Seller Bob

brute force, dp, greedy

Berland University

greedy, math

Little Elephant and Shifts

data structures

The table

constructive algorithms, greedy

Xor

brute force

Heidi Learns Hashing (Medium)

brute force, number theory

Vasily the Bear and Beautiful Strings

combinatorics, math, number theory

Inna and Binary Logic

binary search, bitmasks, data structures

Beavermuncher-0xFF

dfs and similar, dp, dsu, greedy, trees

Start of the session

constructive algorithms

Fools and Foolproof Roads

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

Berland Elections

greedy, sortings

Blackboard Fibonacci

brute force, math

Runner's Problem

dp, matrices, sortings

Third Month Insanity

dp, probabilities, trees

Flag 2

dp

Elections

brute force

Area of a Star

geometry

Kamal-ol-molk's Painting

brute force, constructive algorithms, greedy

Inna and Sequence

binary search, data structures, dp, trees

A Piece of Cake

*special problem, implementation

Death Stars (medium)

hashing, strings

General Mobilization

data structures, dfs and similar, sortings

Village (Minimum)

*special problem, dp, greedy, trees

Chessboard Billiard

dfs and similar, dsu, graphs, number theory

Log Stream Analysis

binary search, brute force, implementation, strings

Chocolate

dfs and similar, implementation

Daleks' Invasion (medium)

dfs and similar, graphs, shortest paths, trees

Harry Potter and the Golden Snitch

binary search, geometry

Rosetta Problem

*special problem

What Has Dirichlet Got to Do with That?

dp, games

Casinos and travel

dp

Education Reform

dp

Quest

dp, greedy

Right Expansion Of The Mind

math

Robo-Footballer

binary search, geometry

Exploration plan

binary search, flows, graph matchings, shortest paths

Special Grid

brute force, dp, greedy

Maxim and Matrix

constructive algorithms, dp, math

Chicken or Fish?

greedy

Table with Letters - 2

brute force, two pointers

Unsolvable

math, number theory

Minimal Product

BF Calculator

*special problem

Kids' Riddle

*special problem

Letter A

geometry, implementation

Hidden Fortress

interactive, math

Closing ceremony

greedy

Out of Controls

*special problem

Parquet

combinatorics, constructive algorithms, greedy, implementation

Space Rescuers

geometry, ternary search

Building Forest

data structures, dsu, graphs

Optimal Sum

data structures, greedy

Longest Array Deconstruction

data structures, divide and conquer, dp, sortings

Happy Farm 5

geometry

Capture Valerian

math

Vectors

implementation, math

E-reader Display

constructive algorithms, greedy

Calendar

greedy, strings

2048

bitmasks, dp

Parade

data structures, sortings

Tanya and Colored Candies

*special problem, dp

Polycarp's Picture Gallery

constructive algorithms, greedy

Arrow

geometry

C*++ Calculations

expression parsing, greedy

Lucky Sorting

constructive algorithms, sortings

Petya and Post

data structures, dp

Sweets Game

bitmasks, dfs and similar, dp, games, implementation

Without Text

*special problem

Constants in the language of Shakespeare

constructive algorithms, dp, greedy