Chess Championship

constructive algorithms, flows, greedy, math

Sheep

binary search, greedy

GCD Master (hard version)

greedy, math, sortings

Divide Powers

constructive algorithms, greedy

Johnny and James

greedy, implementation, math, trees

MEX Game 2 (Easy Version)

binary search, brute force, greedy

GCD Master (easy version)

greedy, math, number theory, sortings

Distinctification

data structures, dsu, greedy

Snowy Mountain

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

Ones

dp, greedy, shortest paths

Anti-Increasing Addicts

constructive algorithms, dp, greedy, math

Playing Around the Table

constructive algorithms, greedy, implementation

Group Division

constructive algorithms, dfs and similar, graphs, greedy

Phys Ed Online

data structures, dp, greedy

Family Photos

games, greedy

Ciel and Flipboard

dp, greedy, math

Lucky Numbers (Easy Version)

dp, greedy

Pumping Stations

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

Subsequence

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

Wonderful Jump

dp, greedy

GCD Groups 2

greedy, number theory, probabilities

Omkar and Last Floor

dp, greedy, two pointers

Roads in Yusland

data structures, dp, greedy

Goods transportation

dp, flows, greedy

Mr. Kitayuta vs. Bamboos

binary search, greedy

Greedy Petya

*special problem, dfs and similar, graphs, greedy

Snow sellers

greedy, sortings

Ordering T-Shirts

greedy

Sequence Recovery

bitmasks, data structures, greedy

Kojiro and Furrari

dp, greedy

Hard Design

greedy, implementation, math

Shrink-Reverse

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

Frog Fights

data structures, greedy

Teamwork

constructive algorithms, greedy, math

Forward, march!

binary search, dp, greedy

Road Repairs

dfs and similar, graphs, greedy

Andrey's Tree

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

Min Cost Permutation (Hard Version)

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

Tournament Construction

constructive algorithms, dp, graphs, greedy, math

String and Operations

dp, greedy

Miriany and Matchstick

constructive algorithms, dp, greedy

Bridge Club

flows, graph matchings, graphs, greedy

The Next Good String

data structures, greedy, hashing, strings

Armor and Weapons

brute force, dp, greedy, shortest paths

Bear and Paradox

binary search, greedy, math, sortings

Bipartite Array

dp, greedy

Have You Ever Heard About the Word?

greedy, hashing, string suffix structures, strings

Rearrange

brute force, constructive algorithms, graphs, greedy, sortings

Alice and Recoloring 2

constructive algorithms, flows, graph matchings, greedy

Tricky and Clever Password

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

Levko and Game

graphs, greedy, shortest paths

Two Centroids

data structures, dfs and similar, greedy, trees

Polygons

greedy, math, number theory

Wine Factory (Hard Version)

data structures, dp, flows, greedy, matrices

The Red Button

combinatorics, dfs and similar, dsu, graphs, greedy

Decinc Dividing

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

Boboniu and Jianghu

dp, greedy, sortings, trees

Closest Pair

data structures, greedy

Minimal String Xoration

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

Shop

greedy

Sum

data structures, divide and conquer, dp, greedy

Pool Records

*special problem, greedy

Optimizer

graphs, greedy, hashing, implementation

R3D3’s Summer Adventure

dp, greedy

MCMF?

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

Concise and clear

brute force, greedy, implementation, math

Prime Divisors Selection

binary search, greedy, math, number theory

Metro Scheme

graphs, greedy

Adilbek and the Watering System

data structures, greedy, sortings

T-shirt

dp, greedy, probabilities

The Final Pursuit

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

Most Different Tree

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

Once in a casino

constructive algorithms, greedy, implementation, math

Employment

greedy, sortings

Tasty Cookie

binary search, constructive algorithms, greedy, implementation

Is It Rated?

greedy, interactive, math, probabilities

Game On Tree

data structures, dfs and similar, greedy, trees

Ever-Hungry Krakozyabra

brute force, combinatorics, greedy, math

Erasing Substrings

bitmasks, dp, greedy

Birthday

greedy, math, probabilities

Train Car Selection

data structures, greedy

Wardrobe

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

Mathematical Expression

constructive algorithms, dp, greedy

Strange Instructions

data structures, greedy, implementation

Three Swaps

constructive algorithms, dfs and similar, greedy

Not Splitting

geometry, graphs, greedy, implementation, shortest paths

Unordered Swaps

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

Walking!

constructive algorithms, greedy

XOR Partition

binary search, bitmasks, data structures, divide and conquer, greedy, trees

Nastia and a Beautiful Matrix

binary search, constructive algorithms, dp, greedy

Juju and Binary String

brute force, constructive algorithms, greedy, math

Minlexes

dp, greedy, implementation, strings

Misha and Paintings

constructive algorithms, data structures, greedy, implementation, math

Halve or Subtract

binary search, brute force, dp, greedy, sortings

Chaotic V.

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

LCS Again

dp, greedy

Zigu Zagu

constructive algorithms, data structures, greedy

Bags and Coins

bitmasks, constructive algorithms, dp, greedy