Interview with Oleg

implementation, strings

Bill Total Value

expression parsing, implementation, strings

Hidden Word

brute force, constructive algorithms, implementation, strings

Food on the Plane

implementation, math

Jumping Ball

implementation

Ray Tracing

greedy, hashing, implementation, math, number theory, sortings

Batch Sort

brute force, greedy, implementation, math

Checking the Calendar

implementation

st-Spanning Tree

dsu, graphs, greedy, implementation

Lakes in Berland

dfs and similar, dsu, graphs, greedy, implementation

Text Document Analysis

expression parsing, implementation, strings

The New Year: Meeting Friends

implementation, math, sortings

Cyclic Cipher

chinese remainder theorem, data structures, implementation, number theory, two pointers

Verse Pattern

implementation, strings

Broken Clock

brute force, implementation

Passwords

implementation, math, sortings, strings

One-dimensional Japanese Crossword

implementation

Cipher

implementation

Vitya in the Countryside

implementation

Efim and Strange Grade

dp, implementation, math

Potions Homework

implementation, sortings

Crazy Computer

implementation

Filya and Homework

implementation, sortings

Meeting of Old Friends

implementation, math

Sonya and Queries

data structures, implementation

Memory and Trident

implementation, strings

Memory and Crow

implementation, math

Chris and Magic Square

constructive algorithms, implementation

Bus to Udayland

brute force, implementation

King Moves

implementation

Checkpoints

greedy, implementation, sortings

Juicer

implementation

Recover the String

constructive algorithms, greedy, implementation, math

Letters Cyclic Shift

constructive algorithms, greedy, implementation, strings

Persistent Bookcase

bitmasks, data structures, dfs and similar, implementation

Brain's Photos

implementation

Working routine

data structures, implementation

Interesting drink

binary search, dp, implementation

Beru-taxi

brute force, geometry, implementation

Hulk

implementation

Black Widow

dp, graphs, implementation, math

Thor

brute force, data structures, implementation

Chris and Road

geometry, implementation

Mishka and trip

implementation, math

Mishka and Game

implementation

Cellular Network

binary search, implementation, two pointers

Powers of Two

brute force, data structures, implementation, math

Maximum Increase

dp, greedy, implementation

Cards

greedy, implementation

One Bomb

implementation

Launch of Collider

implementation

Barnicle

brute force, implementation, math, strings

Pineapple Incident

implementation, math

PLEASE

combinatorics, dp, implementation, math, matrices

Lorenzo Von Matterhorn

brute force, data structures, implementation, trees

Exponential notation

implementation, strings

s-palindrome

implementation, strings

Fashion in Berland

implementation

Mike and Geometry Problem

combinatorics, data structures, dp, geometry, implementation

Mike and Cellphone

brute force, constructive algorithms, implementation

Opponents

implementation

Little Robber Girl's Zoo

constructive algorithms, implementation, sortings

Free Ice Cream

constructive algorithms, implementation

Kay and Eternity

brute force, implementation, sortings

A Good Contest

implementation

Bear and Finding Criminals

constructive algorithms, implementation

Bear and Five Cards

constructive algorithms, implementation

Bear and Chase

brute force, dfs and similar, graphs, implementation, math, probabilities

Bear and Square Grid

dfs and similar, dsu, implementation

Joty and Chocolate

implementation, math, number theory

The Same Calendar

implementation

Johny Likes Numbers

implementation, math

Vanya and Balloons

binary search, brute force, dp, implementation

Vanya and Label

bitmasks, combinatorics, implementation, strings

Vanya and Food Processor

implementation, math

Vanya and Fence

implementation

Theseus and labyrinth

graphs, implementation, shortest paths

Pyramid of Glasses

implementation, math, math

Nicholas and Permutation

constructive algorithms, implementation

Problems for Round

greedy, implementation

Bear and Game

implementation

Different is Good

constructive algorithms, implementation, strings

Summer Camp

implementation

Recycling Bottles

dp, geometry, greedy, implementation

Magic Powder - 2

binary search, implementation

Magic Powder - 1

binary search, brute force, implementation

Cinema

implementation, sortings

Game of Robots

implementation

Reberland Linguistics

dp, implementation, strings

Buses Between Cities

implementation

International Olympiad

constructive algorithms, greedy, implementation, math

Seating On Bus

implementation

Co-prime Array

greedy, implementation, math, number theory

Bicycle Race

geometry, implementation, math

Tanya and Toys

greedy, implementation

Round House

implementation, math

Bear and Reverse Radewoosh

implementation

Scrambled

*special problem, implementation

Bear and Up-Down

brute force, implementation

Bear and Three Balls

brute force, implementation, sortings