Non-Secret Cypher

data structures, dp

BRT Contract

data structures

Optimal Sum

data structures, greedy

Gnomes of Might and Magic

data structures, graphs, implementation, shortest paths

Range Increments

data structures, dsu

Camping Groups

data structures, two pointers

Wizards and Roads

data structures, graph matchings

e-Government

data structures, dfs and similar, strings, trees

Beard Graph

data structures, dsu, trees

Zebra Tower

data structures, greedy, sortings

String Manipulation 1.0

brute force, data structures, strings

Buses and People

binary search, data structures, sortings

Suspects

data structures, implementation

Smart Cheater

data structures, math, probabilities

Lucky Queries

data structures

Lucky Pair

combinatorics, data structures, implementation

Competition

data structures, greedy

Missile Silos

data structures, graphs, shortest paths

Anagram Search

data structures, strings

New Year Snowmen

binary search, data structures, greedy

Mushroom Gnomes - 2

binary search, data structures, probabilities, sortings

Mushroom Gnomes - 2

binary search, data structures, probabilities, sortings

Last Chance

data structures, implementation

Replacement

data structures, implementation, sortings

Lucky Array

data structures

Tree or not Tree

data structures, divide and conquer, implementation, trees

Linear Kingdom Races

data structures, dp

Petr#

data structures, hashing, string suffix structures, strings

Petr#

data structures, dp, hashing, string suffix structures, strings, trees

Petya and Divisors

data structures, number theory

Time to Raid Cowavans

brute force, data structures, sortings

Buses

data structures, dp

Buses

binary search, data structures, dp

Name the album

data structures, implementation

Ski Base

data structures, dsu, graphs

Queue

binary search, data structures

Igloo Skyscraper

data structures, geometry

Ski Base

data structures, dsu, graphs, two pointers

Chip Play

brute force, data structures, implementation

Powerful array

data structures, implementation, sortings

Sum of Medians

binary search, brute force, data structures

Embassy Queue

data structures

General Mobilization

data structures, dfs and similar, sortings

Plug-in

data structures, implementation

Beaver

data structures, dp, greedy, strings, two pointers

Colorful Field

data structures, math, sortings

Hanger

data structures, dp

Tourist

binary search, data structures, dp

Professors task

data structures, geometry

Lucky Tickets

binary search, data structures, sortings, two pointers

Subsegments

data structures

Half-decay tree

data structures, divide and conquer, dp, probabilities

Optical Experiment

binary search, data structures, dp

Petya and Post

data structures, dp

Enemy is weak

data structures, dp

Domino Principle

binary search, data structures, sortings

Circular RMQ

data structures

Cannon

data structures, geometry, sortings

Comb

data structures, dp

Parking Lot

data structures, implementation

Dancing Lessons

data structures

Shooting Gallery

data structures, implementation

Queue

data structures

Old Berland Language

data structures, greedy

Parade

data structures, sortings

Tricky and Clever Password

binary search, constructive algorithms, data structures, greedy, hashing, strings

Do not fear, DravDe is kind

binary search, data structures, dp, hashing

Regular Bracket Sequence

data structures, greedy

Points

data structures

Stripe

data structures, implementation

Map

data structures, implementation, sortings

Holes

data structures, dsu

Ball

data structures, sortings

Exposition

binary search, data structures, dsu, trees, two pointers

Longest Regular Bracket Sequence

data structures, dp, strings

Registration System

data structures, hashing, implementation