Flip the Cards

2-sat, constructive algorithms, data structures, greedy, sortings, two pointers

Omkar and Last Floor

dp, greedy, two pointers

Two Permutations (Easy Version)

brute force, constructive algorithms, greedy, number theory

Embassy Queue

data structures, greedy

Madoka and the Sixth-graders

data structures, dfs and similar, greedy

Résumé Review

binary search, greedy, math

Change-free

greedy

The table

constructive algorithms, greedy

Social Network

greedy, two pointers

Prairie Partition

binary search, constructive algorithms, greedy, math

Anti-Palindromize

flows, graphs, greedy

Bags and Coins

bitmasks, constructive algorithms, dp, greedy

Russian Roulette

constructive algorithms, greedy

Velepin and Marketing

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

Подкрутка I

*special problem, brute force, dp, greedy

Points Movement

data structures, dp, greedy, implementation, sortings

Game with Cards

binary search, constructive algorithms, data structures, dp, greedy, implementation

Miss Punyverse

dp, greedy, trees

Bring Balance

brute force, constructive algorithms, greedy

Zigu Zagu

constructive algorithms, data structures, greedy

Aquarium decoration

data structures, greedy, two pointers

Excitation of Atoms

greedy, implementation

Arthur and Questions

greedy, implementation, math, ternary search

Lottery

binary search, brute force, greedy, math, two pointers

Population Size

greedy, implementation, math

Hobbits' Party

constructive algorithms, greedy

Reading Books (hard version)

data structures, greedy, implementation, sortings, ternary search, two pointers

Guess the Tree

bitmasks, constructive algorithms, dp, greedy, trees

Guard Duty (medium)

binary search, dp, greedy, sortings

End of Exams

greedy

Fools and Foolproof Roads

data structures, dfs and similar, dsu, graphs, greedy

Unique Array

binary search, data structures, divide and conquer, dp, greedy

Students' Revenge

data structures, greedy, sortings

Flow Control

dfs and similar, dp, greedy, trees

Tree Factory

constructive algorithms, greedy, trees

Construct a tree

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

Enormous XOR

bitmasks, constructive algorithms, greedy, math, strings, two pointers

Computer Game

greedy, implementation

Realistic Gameplay

dp, greedy

Vasya and Templates

greedy, implementation, strings

The Boss's Identity

binary search, bitmasks, data structures, dfs and similar, greedy, math, sortings

New Year and Three Musketeers

data structures, greedy, sortings

Group Photo 2 (online mirror version)

brute force, greedy, sortings

Chemistry in Berland

dfs and similar, greedy, trees

Puzzle

constructive algorithms, dp, greedy

Battle Lemmings

dp, greedy

Berland Elections

greedy, sortings

Strange LCS

bitmasks, dp, graphs, greedy, strings

Strange Array

data structures, greedy, sortings

Closing ceremony

greedy

Power Sockets

binary search, data structures, greedy

Parquet

combinatorics, constructive algorithms, greedy, implementation

Colorful Constructive

constructive algorithms, data structures, greedy

GCD Groups 2

greedy, number theory, probabilities

Max Sum Array

combinatorics, constructive algorithms, greedy, sortings

Monsters and Potions

brute force, dp, greedy, implementation

Curfew

binary search, brute force, greedy, sortings

Boboniu and Jianghu

dp, greedy, sortings, trees

Preorder Test

binary search, dfs and similar, dp, graphs, greedy, trees

XOR, Tree, and Queries

bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees

Wonderful Jump

dp, greedy

New Year and the Mallard Expedition

constructive algorithms, greedy

LCS Again

dp, greedy

Bear and Contribution

data structures, greedy, sortings, two pointers

Chaotic V.

dp, graphs, greedy, math, number theory, trees

Kamal-ol-molk's Painting

brute force, constructive algorithms, greedy

Captain America

flows, greedy

Caterpillar on a Tree

dfs and similar, graphs, greedy, implementation, sortings, trees

New Language

2-sat, greedy

Decinc Dividing

brute force, data structures, divide and conquer, dp, greedy

Phoenix and Memory

data structures, dfs and similar, graphs, greedy

Brukhovich and Exams

brute force, greedy, implementation, math, sortings

Circular Dungeon

greedy, math, probabilities

Timetable

constructive algorithms, data structures, greedy, math

Allowed Letters

bitmasks, flows, graph matchings, graphs, greedy

Halve or Subtract

binary search, brute force, dp, greedy, sortings

Anti-Theft Road Planning

bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math

Pawns

data structures, divide and conquer, greedy

Alex and Complicated Task

data structures, dp, greedy

Matrix Sorting

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

Polycarp's problems

binary search, dp, greedy

Alice and Recoloring 1

constructive algorithms, greedy

Dating

greedy, sortings, trees

Subsequence

brute force, divide and conquer, dp, greedy, trees

Library game

games, greedy, interactive, sortings

Restoration of the Permutation

greedy

The Red Button

combinatorics, dfs and similar, dsu, graphs, greedy

Vus the Cossack and a Graph

dfs and similar, graphs, greedy, implementation

Special Grid

brute force, dp, greedy

Wine Factory (Hard Version)

data structures, dp, flows, greedy, matrices

Laboratory on Pluto

constructive algorithms, dp, greedy, math

Min Cost Permutation (Easy Version)

brute force, constructive algorithms, greedy, math

Misha and Paintings

constructive algorithms, data structures, greedy, implementation, math

Quest

dp, greedy

Minlexes

dp, greedy, implementation, strings

Polygons

greedy, math, number theory

Juju and Binary String

brute force, constructive algorithms, greedy, math

Music in Car

data structures, greedy, two pointers

Calendar

greedy, strings

Discarding Game

dp, greedy, two pointers