Fly, freebies, fly!

binary search, brute force, implementation

Second-Price Auction

implementation

Bear and Prime Numbers

binary search, brute force, data structures, dp, implementation, math, number theory

Bear and Strings

brute force, greedy, implementation, math, strings

Bear and Raspberry

brute force, greedy, implementation

Multitasking

greedy, implementation, sortings, two pointers

Coder

implementation

Volcanoes

binary search, implementation, sortings, two pointers

Ksenia and Pawns

dfs and similar, graphs, implementation, trees

Arithmetic Progression

implementation, sortings

Ksenia and Pan Scales

greedy, implementation

Sereja and Stairs

greedy, implementation, sortings

Sereja and Dima

greedy, implementation, two pointers

Sereja and Tree

graphs, implementation

New Year Present

constructive algorithms, implementation

New Year Candles

implementation

Semifinals

implementation, sortings

I.O.U.

implementation

Lever

implementation, math

Red and Black Tree

dp, implementation, math

Maximum Submatrix 2

data structures, dp, implementation, sortings

Inna and Babies

binary search, data structures, dsu, geometry, implementation

Inna and Dima

dfs and similar, dp, graphs, implementation

Inna and Pink Pony

greedy, implementation

Making Sequences is Fun

binary search, implementation, math

Collecting Beats is Fun

implementation

Vessels

data structures, dsu, implementation, trees

K-Periodic Array

greedy, implementation, math

Broken Monitor

brute force, constructive algorithms, greedy, implementation

Berland Bingo

implementation

Valera and Contest

constructive algorithms, implementation, math

Valera and Plates

greedy, implementation

Sereja and Coat Rack

implementation

Sereja and Algorithm

data structures, implementation

Dima and Magic Guitar

brute force, implementation, math

Dima and To-do List

brute force, implementation

Dima and Guards

implementation

The Fibonacci Segment

implementation

Good Number

implementation

Matrix

combinatorics, data structures, implementation

Two Circles

brute force, data structures, implementation

Fixing Typos

greedy, implementation

Soroban

implementation

Insertion Sort

data structures, dp, implementation, math

Petya and Staircases

implementation, sortings

Levko and Table

constructive algorithms, implementation

Levko and Array Recovery

greedy, implementation

Table

constructive algorithms, greedy, implementation

Dima and Kicks

brute force, dsu, graphs, implementation

Dima and Containers

constructive algorithms, greedy, implementation

Dima and Continuous Line

brute force, implementation

Flag Day

constructive algorithms, implementation

Group of Students

brute force, greedy, implementation

Xenia and String Problem

dp, hashing, implementation, string suffix structures, strings

Compartments

combinatorics, constructive algorithms, greedy, implementation

Xenia and Hamming

implementation, math

Vasya and Public Transport

greedy, implementation

Vasya and Digital Root

constructive algorithms, implementation

Find Maximum

implementation, math, number theory

Two Heaps

combinatorics, constructive algorithms, greedy, implementation, math, sortings

Domino

implementation, math

Jeff and Periods

implementation, sortings

Jeff and Digits

brute force, implementation, math

Jeff and Rounding

dp, greedy, implementation, math

Bombs

greedy, implementation, sortings

TL

brute force, greedy, implementation

Color the Fence

data structures, dp, greedy, implementation

Cinema Line

greedy, implementation

Fixed Points

brute force, implementation, math

Difference Row

constructive algorithms, implementation, sortings

Magnets

implementation

Alternating Current

data structures, greedy, implementation

Xenia and Spies

brute force, greedy, implementation

Xenia and Divisors

greedy, implementation

Tourist Problem

combinatorics, implementation, math

Xenia and Ringroad

implementation

Helpful Maths

greedy, implementation, sortings, strings

Vasily the Bear and Painting Square

bitmasks, combinatorics, dp, implementation

Vasily the Bear and Sequence

brute force, greedy, implementation, number theory

Vasily the Bear and Triangle

implementation, math

Candy Bags

implementation

Characteristics of Rectangles

binary search, bitmasks, brute force, implementation, sortings

Binary Key

dp, greedy, implementation

Maximum Absurdity

data structures, dp, implementation

Down the Hatch!

implementation

Deja Vu

constructive algorithms, graphs, implementation

Escaping on Beaveractor

data structures, implementation, trees

Escaping on Beaveractor

dfs and similar, implementation

Shave Beaver!

implementation

Oh Sweet Beaverette

brute force, implementation

Cakeminator

brute force, implementation

IQ Test

implementation

Flipping Game

brute force, dp, implementation

Square and Rectangles

implementation

Ciel and Robot

binary search, implementation, math

Psychos in a Line

data structures, implementation

Strings of Power

implementation, strings, two pointers

Ants

brute force, implementation

Suns and Rays

constructive algorithms, dfs and similar, implementation

Suns and Rays

dfs and similar, implementation