Walking!

constructive algorithms, greedy

Unordered Swaps

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

Not Splitting

geometry, graphs, greedy, implementation, shortest paths

Three Swaps

constructive algorithms, dfs and similar, greedy

Strange Instructions

data structures, greedy, implementation

Mathematical Expression

constructive algorithms, dp, greedy

Serval and Brain Power

bitmasks, brute force, dp, greedy, implementation, strings

And Yet Another Bracket Sequence

data structures, greedy, hashing, string suffix structures, strings

Wardrobe

dp, greedy

Train Car Selection

data structures, greedy

Erasing Substrings

bitmasks, dp, greedy

Birthday

greedy, math, probabilities

Ever-Hungry Krakozyabra

brute force, combinatorics, greedy, math

Game On Tree

data structures, dfs and similar, greedy, trees

Is It Rated?

greedy, interactive, math, probabilities

Tasty Cookie

binary search, constructive algorithms, greedy, implementation

Employment

greedy, sortings

Once in a casino

constructive algorithms, greedy, implementation, math

Most Different Tree

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

Adilbek and the Watering System

data structures, greedy, sortings

The Final Pursuit

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

T-shirt

dp, greedy, probabilities

Metro Scheme

graphs, greedy

Prime Divisors Selection

binary search, greedy, math, number theory

Concise and clear

brute force, greedy, implementation, math

MCMF?

data structures, flows, graphs, greedy, sortings, two pointers

R3D3’s Summer Adventure

dp, greedy

Optimizer

graphs, greedy, hashing, implementation

Pool Records

*special problem, greedy

Sum

data structures, divide and conquer, dp, greedy

Shop

greedy

Minimal String Xoration

bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings

Closest Pair

data structures, greedy

Boboniu and Jianghu

dp, greedy, sortings, trees

Decinc Dividing

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

The Red Button

combinatorics, dfs and similar, dsu, graphs, greedy

Wine Factory (Hard Version)

data structures, dp, flows, greedy, matrices

Polygons

greedy, math, number theory

Two Centroids

data structures, dfs and similar, greedy, trees

Levko and Game

graphs, greedy, shortest paths

Tricky and Clever Password

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

Alice and Recoloring 2

constructive algorithms, flows, graph matchings, greedy

Rearrange

brute force, constructive algorithms, graphs, greedy, sortings

Have You Ever Heard About the Word?

greedy, hashing, string suffix structures, strings

Bipartite Array

dp, greedy

Armor and Weapons

brute force, dp, greedy, shortest paths

Bear and Paradox

binary search, greedy, math, sortings

The Next Good String

data structures, greedy, hashing, strings

Bridge Club

flows, graph matchings, graphs, greedy

Miriany and Matchstick

constructive algorithms, dp, greedy

String and Operations

dp, greedy

Andrey's Tree

binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees

Tournament Construction

constructive algorithms, dp, graphs, greedy, math

Min Cost Permutation (Hard Version)

binary search, constructive algorithms, data structures, greedy, math, sortings

Road Repairs

dfs and similar, graphs, greedy

Forward, march!

binary search, dp, greedy

Teamwork

constructive algorithms, greedy, math

Shrink-Reverse

binary search, brute force, greedy, hashing, implementation, string suffix structures, strings

Frog Fights

data structures, greedy

Hard Design

greedy, implementation, math

Kojiro and Furrari

dp, greedy

Sequence Recovery

bitmasks, data structures, greedy

Ordering T-Shirts

greedy

Snow sellers

greedy, sortings

Greedy Petya

*special problem, dfs and similar, graphs, greedy

Mr. Kitayuta vs. Bamboos

binary search, greedy

Goods transportation

dp, flows, greedy

Roads in Yusland

data structures, dp, greedy

Omkar and Last Floor

dp, greedy, two pointers

GCD Groups 2

greedy, number theory, probabilities

Wonderful Jump

dp, greedy

Subsequence

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

Pumping Stations

brute force, dfs and similar, divide and conquer, flows, graphs, greedy, trees

Lucky Numbers (Easy Version)

dp, greedy

Ciel and Flipboard

dp, greedy, math

Family Photos

games, greedy

Phys Ed Online

data structures, dp, greedy

Group Division

constructive algorithms, dfs and similar, graphs, greedy

Playing Around the Table

constructive algorithms, greedy, implementation

Distinctification

data structures, dsu, greedy

MEX Game 2 (Easy Version)

binary search, brute force, greedy

Anti-Increasing Addicts

constructive algorithms, dp, greedy, math

Ones

dp, greedy, shortest paths

Snowy Mountain

data structures, dfs and similar, graphs, greedy, shortest paths, trees

GCD Master (easy version)

greedy, math, number theory, sortings

Johnny and James

greedy, implementation, math, trees

Divide Powers

constructive algorithms, greedy

GCD Master (hard version)

greedy, math, sortings

Sheep

binary search, greedy

Chess Championship

constructive algorithms, flows, greedy, math

Restore the Tree

graphs, greedy, trees

Late For Work (submissions are not allowed)

data structures, greedy, schedules, shortest paths

Candy Shop

greedy

Fire and Ice

greedy

Heaven Tour

data structures, greedy

Frequency Problem (Hard Version)

data structures, greedy, two pointers

Abandoning Roads

brute force, dp, graphs, greedy

Lucky Numbers (Hard Version)

dp, greedy

Black, White and Grey Tree

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

Falling Sand (Hard Version)

dfs and similar, dp, graphs, greedy