Booking System

binary search, dp, greedy, implementation

Art Union

brute force, dp, implementation

Guess a number!

greedy, implementation, two pointers

Mashmokh and Tokens

binary search, greedy, implementation, math

Mashmokh and Lights

implementation

Spyke Chatting

implementation

Data Recovery

implementation

E-mail Addresses

implementation

Pattern

implementation, strings

Poster

greedy, implementation

Kicker

implementation

Multi-core Processor

implementation

Password Check

*special problem, implementation

A + B Strikes Back

*special problem, brute force, constructive algorithms, dsu, implementation

Garland

implementation

Line to Cashier

implementation

Curious Array

brute force, combinatorics, implementation, math

Long Path

dp, implementation

Triangle

brute force, geometry, implementation, math

Hamming Triples

implementation, math, two pointers

Toy Sum

greedy, implementation, math

Unusual Product

implementation, math

Gravity Flip

greedy, implementation, sortings

Maze 1D

binary search, greedy, implementation

Minesweeper 1D

dp, implementation

Marathon

implementation, math

Valera and X

implementation

Two Rooted Trees

data structures, implementation, trees

Trees in a Row

brute force, implementation

Team

constructive algorithms, greedy, implementation

Sereja and Contests

greedy, implementation, math

Vanya and Cards

implementation, math

Inna and Huge Candy Matrix

implementation, math

Inna and New Matrix of Candies

brute force, implementation, schedules

Inna and Choose Options

implementation

Pages

implementation

Cards

constructive algorithms, implementation

On Corruption and Numbers

constructive algorithms, implementation, math

On Segment's Own Points

implementation

Physical Education and Buns

brute force, implementation, math

Counting Sticks

brute force, implementation

Genetic Engineering

implementation, two pointers

Inna, Dima and Song

implementation

Inna and Alarm Clock

implementation

Fox and Cross

greedy, implementation

Fox and Minimal path

bitmasks, constructive algorithms, graphs, implementation, math

George and Number

greedy, implementation

George and Sleep

implementation

Game with Points

dp, graphs, implementation, shortest paths

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