Remove the Substring (easy version)

greedy, implementation

Mind Control

brute force, data structures, implementation

Sasha and a Bit of Relax

dp, implementation

Maximum Product Strikes Back

brute force, implementation, math, two pointers

Seating Arrangements (hard version)

data structures, greedy, implementation, sortings, two pointers

Star sky

dp, implementation

Booking System

binary search, dp, greedy, implementation

Character Blocking

data structures, hashing, implementation

Same Count One

brute force, constructive algorithms, greedy, implementation, two pointers

Circular Dance

implementation

Equal Frequencies

brute force, constructive algorithms, greedy, implementation, sortings, strings

Umka and a Long Flight

constructive algorithms, implementation, math

Matrix and Shifts

brute force, constructive algorithms, greedy, implementation

Cat Party (Hard Edition)

data structures, implementation

Social Network

dsu, graphs, greedy, implementation, trees

Lakes in Berland

dfs and similar, dsu, graphs, greedy, implementation

Vasya and Basketball

binary search, brute force, data structures, implementation, sortings, two pointers

Merge Equals

data structures, implementation

Final Countdown

implementation, math, number theory

Cows and Sequence

constructive algorithms, data structures, implementation

League of Leesins

constructive algorithms, implementation

Bombs

greedy, implementation, sortings

Long Path

dp, implementation

Alyona and Spreadsheet

binary search, data structures, dp, greedy, implementation, two pointers

DMCA

*special problem, implementation, number theory

Anya and Smartphone

constructive algorithms, data structures, implementation

Plasticine zebra

constructive algorithms, implementation

Tourist's Notes

binary search, brute force, greedy, implementation, math

New Year Book Reading

constructive algorithms, greedy, implementation, math

Connect Three

implementation, math

Banh-mi

greedy, implementation, math

Primes or Palindromes?

brute force, implementation, math, number theory

The Robot

brute force, implementation

Maximum Submatrix 2

data structures, dp, implementation, sortings

Luba And The Ticket

brute force, greedy, implementation

Extract Numbers

implementation, strings

Maximum Subrectangle

binary search, implementation, two pointers

Watering Flowers

implementation

Triangle

brute force, geometry, implementation, math

Find Maximum

implementation, math, number theory

s-palindrome

implementation, strings

Strange Addition

brute force, constructive algorithms, implementation

Matrix

combinatorics, data structures, implementation

Unusual Product

implementation, math

Hacker, pack your bags!

binary search, greedy, implementation, sortings

Multi-judge Solving

greedy, implementation

Igor and his way to work

dfs and similar, graphs, implementation, shortest paths

Petya and Exam

implementation, strings

Rectangles

geometry, implementation, sortings

Skyscrapers

implementation, sortings

Constellation

geometry, implementation

Tourist Problem

combinatorics, implementation, math

Shockers

implementation, strings

Five-In-a-Row

brute force, implementation

The Same Calendar

implementation

Flag of Berland

brute force, implementation

Two Squares

geometry, implementation

Ancient Prophesy

brute force, implementation, strings

Polycarp's phone book

data structures, implementation, sortings

Tram

constructive algorithms, implementation, math

Even Path

data structures, implementation

Alena And The Heater

binary search, implementation

Permutation Game

implementation

Buses Between Cities

implementation

Ravioli Sort

implementation

Cards Sorting

data structures, implementation, sortings

Testing Robots

implementation

Game with String

implementation, probabilities, strings

Hidden Word

brute force, constructive algorithms, implementation, strings

Cardiogram

implementation

Parallel Universes (Easy)

implementation

Making Sequences is Fun

binary search, implementation, math

Ivan and Powers of Two

greedy, implementation

Memory Manager

implementation

Literature Lesson

implementation

Heidi and the Turing Test (Easy)

implementation

Statistics of Recompressing Videos

*special problem, data structures, implementation

Grammar Lessons

implementation, strings

Martian Clock

implementation

Suspects

constructive algorithms, data structures, implementation

Car Repair Shop

implementation

Sereja and Contest

implementation

Wizards and Trolleybuses

implementation, math

Bill Total Value

expression parsing, implementation, strings

System Testing

implementation

Balancer

greedy, implementation

Door Frames

greedy, implementation

Network Mask

*special problem, bitmasks, brute force, implementation

Hockey

implementation, strings

Cinema

implementation

Practice

constructive algorithms, divide and conquer, implementation

Fractal

implementation

Возможно, вы знаете этих людей?

implementation

Geometry Horse

greedy, implementation, sortings, two pointers

Wallpaper

implementation, math

Stepan and Vowels

*special problem, implementation, strings

Multi-core Processor

implementation

ucyhf

*special problem, brute force, implementation, number theory

Constellation

implementation

Interactive Bulls and Cows (Easy)

brute force, constructive algorithms, implementation