Bags and Coins

bitmasks, constructive algorithms, dp, greedy

Résumé Review

binary search, greedy, math

Two Arrays

bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers

PermuTree (hard version)

bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees

Difficult Mountain

data structures, dp, greedy, sortings

Paint

dp, greedy

Rogue-like Game

*special problem, brute force, greedy, two pointers

Replicating Processes

constructive algorithms, greedy

Power Defence

brute force, dp, geometry, greedy

Grocer's Problem

constructive algorithms, graphs, greedy

Bob's Beautiful Array

bitmasks, brute force, greedy

Berland Army

constructive algorithms, graphs, greedy

Fafa and Array

data structures, greedy

King's Problem?

geometry, greedy

Dominoes

combinatorics, flows, graph matchings, greedy

Broken Tree

dfs and similar, dp, graphs, greedy, trees

Sum of Matchings

brute force, combinatorics, constructive algorithms, dfs and similar, graph matchings, greedy, math

Teleporters

binary search, greedy

Trial for Chief

graphs, greedy, shortest paths

Divisor Set

divide and conquer, fft, greedy, math, number theory

Weights

constructive algorithms, greedy, two pointers

Swap and Take

dp, greedy

Bracket Xoring

constructive algorithms, greedy, implementation, math

Too Much Money

brute force, greedy

Winding polygonal line

constructive algorithms, geometry, greedy, math

Min Cost Permutation (Easy Version)

brute force, constructive algorithms, greedy, math

Pawns

data structures, divide and conquer, greedy

Alice and Recoloring 1

constructive algorithms, greedy

Matrix Sorting

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

Circular Dungeon

greedy, math, probabilities

Phoenix and Memory

data structures, dfs and similar, graphs, greedy

New Language

2-sat, greedy

New Year and the Mallard Expedition

constructive algorithms, greedy

Preorder Test

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

Colorful Constructive

constructive algorithms, data structures, greedy

Power Sockets

binary search, data structures, greedy

Puzzle

constructive algorithms, dp, greedy

Strange LCS

bitmasks, dp, graphs, greedy, strings

Strange Array

data structures, greedy, sortings

Realistic Gameplay

dp, greedy

Enormous XOR

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

Bring Balance

brute force, constructive algorithms, greedy

Velepin and Marketing

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

Points Movement

data structures, dp, greedy, implementation, sortings

Flip the Cards

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

Parametric MST

binary search, constructive algorithms, graphs, greedy, math, sortings

Three Days Grace

data structures, dp, greedy, math, number theory, two pointers

Mice and Holes

data structures, dp, greedy, sortings

PolandBall and Gifts

bitmasks, dp, greedy

Cardboard Box

data structures, greedy

Pairs of Pairs

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

Frequency Problem (Easy Version)

data structures, greedy

Greedy Shopping

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

Phoenix and Earthquake

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

Bits And Pieces

bitmasks, dfs and similar, dp, greedy

Least Cost Bracket Sequence

greedy

Painting Numbers

*special problem, data structures, greedy, number theory

Goats and Wolves

greedy

Row of Models

greedy, sortings

Summer Reading

dp, greedy

Deputies

constructive algorithms, graphs, greedy, implementation

Shoe Store

dp, graph matchings, greedy, sortings, two pointers

Perun, Ult!

brute force, greedy, sortings

Choosing Two Paths

dfs and similar, dp, greedy, trees

Inversion Composition

constructive algorithms, data structures, greedy

Compute Power

binary search, dp, greedy

Robot and Candies

data structures, graph matchings, greedy

CNF 2

constructive algorithms, dfs and similar, graphs, greedy

Summer Practice Report

dp, greedy

Spinach Pizza

games, geometry, greedy, interactive

Round Marriage

binary search, graph matchings, greedy

Even Split

binary search, constructive algorithms, greedy, math

Colored Subgraphs

dfs and similar, dp, games, greedy, trees

Maximum And Queries (hard version)

bitmasks, divide and conquer, dp, greedy

Traveling in Berland

binary search, data structures, graphs, greedy, implementation

Laboratory on Pluto

constructive algorithms, dp, greedy, math

Library game

games, greedy, interactive, sortings

Caterpillar on a Tree

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

Brukhovich and Exams

brute force, greedy, implementation, math, sortings

XOR, Tree, and Queries

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

Max Sum Array

combinatorics, constructive algorithms, greedy, sortings

Battle Lemmings

dp, greedy

The Boss's Identity

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

Tree Factory

constructive algorithms, greedy, trees

Lottery

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

Reading Books (hard version)

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

Aquarium decoration

data structures, greedy, two pointers

Miss Punyverse

dp, greedy, trees

Game with Cards

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

Anti-Palindromize

flows, graphs, greedy

Madoka and the Sixth-graders

data structures, dfs and similar, greedy

Summoning Minions

constructive algorithms, dp, flows, graph matchings, greedy, sortings

Colored Balls

greedy, math, number theory

Text Editor

brute force, dp, greedy, strings

Controversial Rounds

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

Middle Duplication

data structures, dfs and similar, greedy, strings, trees

Cow and Treats

binary search, combinatorics, dp, greedy, implementation, math

Strange Function

binary search, data structures, dp, greedy

Almost Fault-Tolerant Database

brute force, constructive algorithms, dfs and similar, greedy, implementation

Frogs and mosquitoes

data structures, greedy