Segments

greedy, sortings

Minimum path

greedy

Missing Numbers

binary search, constructive algorithms, greedy, math, number theory

Fancy Number

brute force, greedy, sortings, strings

Cunning Gena

bitmasks, dp, greedy, sortings

Handshakes

binary search, constructive algorithms, data structures, greedy

Dense Subsequence

data structures, greedy, strings

Changing Array

greedy, implementation

Privatization of Roads in Treeland

binary search, constructive algorithms, dfs and similar, graphs, greedy, trees

Two Heaps

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

Skills

binary search, brute force, dp, greedy, sortings, two pointers

Subordinates

constructive algorithms, data structures, graphs, greedy, sortings

Olympiad

binary search, greedy, sortings, two pointers

Haar Features

greedy, implementation

Kyoya and Permutation

binary search, combinatorics, constructive algorithms, greedy, implementation, math

Coprocessor

dfs and similar, dp, graphs, greedy

Preparing for the Contest

binary search, data structures, greedy, sortings

Array Game

games, greedy, two pointers

3-cycles

constructive algorithms, graphs, greedy

Numbers Exchange

greedy, implementation, math

Diana and Liana

greedy, implementation, two pointers

Event Dates

greedy, meet-in-the-middle, sortings

Hot Days

greedy

Sum

greedy, math

Old Berland Language

data structures, greedy, trees

Naughty Stone Piles

greedy

Washer, Dryer, Folder

greedy, implementation

Beautiful Decomposition

dp, games, greedy, number theory

Zero-One

constructive algorithms, games, greedy

Annual Ants' Gathering

dfs and similar, dp, greedy, trees

Memory for Arrays

binary search, bitmasks, greedy

Distributed Join

greedy

Digits Permutations

greedy

Russian Roulette

constructive algorithms, greedy

End of Exams

greedy

Group Photo 2 (online mirror version)

brute force, greedy, sortings

Name

greedy, strings

Problemsolving Marathon

*special problem, binary search, greedy

Собачки и миски

data structures, greedy, sortings

Oil

*special problem, greedy, math

Odd-Even Subsequence

binary search, dp, dsu, greedy, implementation

Jzzhu and Cities

graphs, greedy, shortest paths

Orac and Medians

constructive algorithms, greedy, math

Tree Shuffling

dfs and similar, dp, greedy, trees

Reachability from the Capital

dfs and similar, graphs, greedy

Another Array Problem

brute force, constructive algorithms, greedy

Breaking the Wall

binary search, brute force, constructive algorithms, greedy, math

Captain Flint and Treasure

data structures, dfs and similar, graphs, greedy, implementation, trees

Make Them Equal

constructive algorithms, greedy, math

Match Points

binary search, greedy, sortings, ternary search, two pointers

Weights Division (easy version)

data structures, dfs and similar, greedy, trees

Domino for Young

dp, greedy, math

Choosing flowers

binary search, brute force, data structures, dfs and similar, dp, greedy, sortings, two pointers

Three Paths on a Tree

dfs and similar, dp, greedy, trees

GCD and MST

constructive algorithms, dsu, graphs, greedy, number theory, sortings

505

bitmasks, brute force, constructive algorithms, dp, greedy, implementation

Minimizing Difference

binary search, constructive algorithms, greedy, sortings, ternary search, two pointers

Buying Jewels

constructive algorithms, greedy, math

For Gamers. By Gamers.

binary search, brute force, greedy, math, sortings

Keep the Average High

dp, greedy, math

Berserk And Fireball

constructive algorithms, greedy, implementation, math, two pointers

Omkar and Medians

data structures, greedy, implementation

New Year Concert

binary search, data structures, greedy, math, number theory, two pointers

K-beautiful Strings

binary search, brute force, constructive algorithms, greedy, strings

Accommodation

brute force, dp, greedy, implementation

Expression Evaluation Error

constructive algorithms, greedy, implementation, math

Paths and Trees

graphs, greedy, shortest paths

AB Graph

brute force, constructive algorithms, graphs, greedy, implementation

Cheap Dinner

brute force, data structures, graphs, greedy, implementation, sortings, two pointers

The Strongest Build

binary search, brute force, data structures, dfs and similar, graphs, greedy, hashing, implementation

Robot Collisions

data structures, greedy, implementation, sortings

Empty Graph

binary search, constructive algorithms, data structures, greedy, shortest paths

Divide by Three

dp, greedy, math, number theory

XOR Inverse

bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees

Pairs of Segments

data structures, greedy, sortings, two pointers

Counting Graphs

combinatorics, divide and conquer, dsu, graphs, greedy, sortings, trees

The Contest

data structures, dp, greedy

Maximize the Remaining String

brute force, data structures, dp, greedy, strings

Cut and Stick

binary search, data structures, greedy, implementation, sortings

Increasing Frequency

binary search, dp, greedy

Big Brush

constructive algorithms, data structures, greedy, implementation

Exact Change

brute force, constructive algorithms, greedy

Robot in a Hallway

data structures, dp, greedy, implementation, ternary search

Buds Re-hanging

constructive algorithms, dfs and similar, dp, greedy, trees

Replace With Product

brute force, greedy, math

Zero-One (Hard Version)

dp, greedy

Garland

dfs and similar, graphs, greedy, trees

Two Sets

2-sat, dfs and similar, dsu, graph matchings, greedy

Sequence Sorting

dp, greedy, two pointers

Maximum Subarray

data structures, dp, greedy, two pointers

Yet Another Division Into Teams

dp, greedy, sortings

Hanoi Factory

brute force, data structures, dp, greedy, sortings

Case of Fugitive

data structures, greedy, sortings

Range Sorting (Easy Version)

binary search, dp, dsu, greedy, trees, two pointers

Moving Chips

bitmasks, dp, greedy

Pchelyonok and Segments

binary search, data structures, dp, greedy, math

DZY Loves Modification

brute force, data structures, greedy

Cashback

data structures, dp, greedy, math

Decreasing Debts

constructive algorithms, data structures, graphs, greedy, implementation, math, two pointers

Matching vs Independent Set

constructive algorithms, graphs, greedy, sortings