Printer

binary search, data structures, implementation, sortings

Little Xor

brute force, implementation

Tree and Table

dfs and similar, dp, implementation, trees

Playing with Permutations

implementation, math

Restoring IPv6

implementation, strings

Sweets for Everyone!

binary search, greedy, implementation

Cupboards

implementation

Log Stream Analysis

binary search, brute force, implementation, strings

Mishap in Club

greedy, implementation

Internet Address

implementation, strings

System Administrator

implementation

Dividing Orange

implementation

Colorado Potato Beetle

dfs and similar, implementation

Big Segment

implementation, sortings

Heads or Tails

brute force, implementation

Race

brute force, implementation

Mirror Box

geometry, implementation

Easy Tape Programming

brute force, implementation

Two Bags of Potatoes

greedy, implementation, math

Tape Programming

data structures, implementation

Young Table

implementation, sortings

Free Cash

implementation

Easy Number Challenge

implementation, number theory

Boy or Girl

brute force, implementation, strings

Number Challenge

combinatorics, dp, implementation, math, number theory

Practice

constructive algorithms, divide and conquer, implementation

Champions' League

implementation

Cinema

implementation

Weather

dp, implementation

Lefthanders and Righthanders

implementation

Perfect Permutation

implementation, math

T-primes

binary search, implementation, math, number theory

Two Tables

brute force, implementation

Is your horseshoe on the other hoof?

implementation

Effective Approach

implementation

Anniversary

data structures, implementation, math, matrices, number theory

Snake

bitmasks, dfs and similar, graphs, implementation

Array

bitmasks, implementation, two pointers

Bracket Sequence

data structures, expression parsing, implementation

Reducing Fractions

implementation, math, number theory, sortings

Cosmic Tables

data structures, implementation

Shooshuns and Sequence

brute force, implementation

Little Elephant and Numbers

implementation

Little Elephant and Function

implementation, math

Little Elephant and Problem

implementation, sortings

Special Offer! Super Price 999 Bourles!

implementation

k-String

implementation, strings

Airport

implementation

Mountain Scenery

brute force, constructive algorithms, implementation

Forming Teams

dfs and similar, implementation

Tiling with Hexagons

implementation, math

Crosses

brute force, implementation

Bicycle Chain

brute force, implementation

Polycarpus is Looking for Good Substrings

bitmasks, hashing, implementation

Prizes, Prizes, more Prizes

implementation

Little Elephant and Rozdil

brute force, implementation

Little Elephant and Strings

data structures, implementation, string suffix structures, two pointers

Hit Ball

geometry, implementation, math

Game on Paper

brute force, implementation

Two Problems

brute force, implementation

LLPS

binary search, bitmasks, brute force, greedy, implementation, strings

Tractor College

implementation, math, number theory, ternary search

Programming Language

binary search, brute force, expression parsing, implementation

Football Championship

brute force, implementation

Drinks

implementation, math

Hexadecimal's theorem

brute force, constructive algorithms, implementation, number theory

About Bacteria

implementation, math

Try and Catch

expression parsing, implementation

After Training

data structures, implementation, math

Exams

implementation, math

Walking in the Rain

brute force, implementation

Funky Numbers

binary search, brute force, implementation

Stack

*special problem, expression parsing, implementation

Array Sorting

*special problem, implementation

Binary Notation

*special problem, implementation

HQ9+

*special problem, implementation

Asterisks

*special problem, implementation

LCM

*special problem, implementation, math

A + Reverse B

*special problem, implementation

Comparing Strings

implementation, strings

Common Divisors

brute force, hashing, implementation, math, strings

Vasya's Calendar

implementation

Battlefield

geometry, graphs, implementation, shortest paths

Series of Crimes

brute force, geometry, implementation

Mathematical Analysis Rocks!

constructive algorithms, implementation, math

Defragmentation

implementation

Good Matrix Elements

implementation

Good Matrix Elements

implementation

Gnomes of Might and Magic

data structures, graphs, implementation, shortest paths

Geometry Horse

greedy, implementation, sortings, two pointers

Plane of Tanks: Pro

implementation

Robot Bicorn Attack

brute force, implementation

File List

dp, greedy, implementation

Deputies

constructive algorithms, graphs, greedy, implementation

Rock-Paper-Scissors

implementation, math

Bus

*special problem, implementation, sortings

Pseudorandom Sequence Period

*special problem, implementation, number theory

Phone Code

*special problem, brute force, implementation

A polyline

*special problem, implementation

ucyhf

*special problem, brute force, implementation, number theory