Railway System

constructive algorithms, graphs, greedy, interactive, sortings

Magical Boxes

greedy, math

Increasing Matrix

greedy

Stars Drawing (Hard Edition)

binary search, dp, greedy

Newspaper Headline

greedy, strings

Fish Weight

constructive algorithms, greedy

High Load

constructive algorithms, greedy, implementation, trees

Team Building

bitmasks, dp, greedy, sortings

GukiZ hates Boxes

binary search, greedy

The Monster

dp, greedy, implementation, math

Money Transfers

constructive algorithms, data structures, greedy, sortings

The Butcher

geometry, greedy, implementation, sortings, two pointers

Decreasing Debts

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

Cashback

data structures, dp, greedy, math

Tokitsukaze and Two Colorful Tapes

constructive algorithms, dfs and similar, graphs, greedy

Feed with Candy

greedy

Johnny and Grandmaster

greedy, implementation, math, sortings

DZY Loves Physics

greedy, math

Three Sequences

constructive algorithms, data structures, greedy, math

A Student's Dream

greedy, math

Mischievous Mess Makers

greedy, math

Two Chess Pieces

dfs and similar, dp, greedy, trees

Epidemic in Monstropolis

constructive algorithms, dp, greedy, two pointers

Game of the Rows

brute force, greedy, implementation

Complete the Projects (easy version)

greedy

Matching vs Independent Set

constructive algorithms, graphs, greedy, sortings

Rebus

constructive algorithms, expression parsing, greedy, math

News About Credit

*special problem, greedy, two pointers

Pencils and Boxes

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

Inna and Nine

combinatorics, greedy

Points on Plane

constructive algorithms, divide and conquer, geometry, greedy, sortings

Mishap in Club

greedy, implementation

Count the Trains

binary search, data structures, greedy, sortings

Strange Game On Matrix

greedy, two pointers

Train Splitting

constructive algorithms, graphs, greedy

Travelling Salesman Problem

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

Simple Subset

constructive algorithms, greedy, number theory

Music Festival

binary search, data structures, dp, greedy, sortings

Recover the String

constructive algorithms, greedy, implementation, math

Replacing Digits

greedy

Bets

greedy, implementation

Minimal Segment Cover

data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees

Suitable Replacement

binary search, greedy, implementation

Bookshelves

bitmasks, dp, greedy

Linguistics

greedy, implementation, sortings, strings

Bottom-Tier Reversals

constructive algorithms, greedy

Animals

dp, greedy

Timofey and Black-White Tree

brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees

Well-known Numbers

binary search, greedy, number theory

Toy Sum

greedy, implementation, math

Spanning Tree with One Fixed Degree

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

Fox and Card Game

games, greedy, sortings

Generating Sets

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

Grid Xor

constructive algorithms, greedy, implementation, interactive, math

Terse princess

constructive algorithms, greedy

Nezzar and Binary String

data structures, greedy

Magazine Ad

binary search, greedy

Bracket Walk

data structures, greedy, strings

Mahmoud and Ehab and another array construction task

constructive algorithms, greedy, math, number theory

Space Formula

greedy

MEX vs DIFF

binary search, brute force, constructive algorithms, data structures, greedy, two pointers

Almost Triple Deletions

data structures, dp, greedy

Gourmet choice

dfs and similar, dp, dsu, graphs, greedy

Naming Company

games, greedy, sortings

April Fools' Problem (easy)

greedy, sortings

The Human Equation

greedy, implementation

Least Cost Bracket Sequence

greedy

XOR Break --- Solo Version

bitmasks, constructive algorithms, greedy

Maximize!

binary search, greedy, ternary search, two pointers

Elections

greedy

Minimal Labels

data structures, dfs and similar, graphs, greedy

Flying Sort (Easy Version)

dp, greedy, two pointers

Doremy's Drying Plan (Easy Version)

brute force, data structures, dp, greedy, sortings

Centroids

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

Kirk and a Binary String (hard version)

data structures, greedy, math, strings

Make k Equal

greedy

Robin Hood

binary search, greedy

Array Shuffling

constructive algorithms, graphs, greedy

Monsters

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

Single-use Stones

binary search, flows, greedy, two pointers

My pretty girl Noora

brute force, dp, greedy, math, number theory

Winter Is Coming

dp, greedy, sortings

Ciel and Duel

dp, flows, greedy

New Year's Puzzle

brute force, dp, graph matchings, greedy, sortings

Send Boxes to Alice (Hard Version)

constructive algorithms, greedy, math, number theory, ternary search, two pointers

Balls and Boxes

constructive algorithms, greedy, implementation

Credit Card

data structures, dp, greedy, implementation

Kuroni and the Score Distribution

constructive algorithms, greedy, implementation, math

Read Time

binary search, greedy, two pointers

Gluttony

constructive algorithms, greedy

Minimax

constructive algorithms, greedy, strings

Vlad and Trouble at MIT

dfs and similar, dp, flows, graphs, greedy, implementation, trees

Workout plan

data structures, greedy

Fibonacci Strings

greedy, implementation, math, number theory

Into Blocks (easy version)

data structures, dsu, greedy, implementation, two pointers

Roman Digits

brute force, combinatorics, dp, greedy, math

Kirk and a Binary String (easy version)

brute force, greedy, strings

The Parade

binary search, greedy

Wonderful Randomized Sum

greedy

Inna and Pink Pony

greedy, implementation