Swap Letters

constructive algorithms, greedy

Yellow Cards

greedy, implementation, math

Employment

greedy, sortings

Bad Sequence

data structures, greedy

Unstable String Sort

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

Double Permutation Inc.

*special problem, binary search, greedy

Teams

*special problem, binary search, greedy, math

Ice Cream

*special problem, greedy, sortings

Marcin and Training Camp

brute force, greedy

Moving Walkways

data structures, greedy, math

Into Blocks (easy version)

data structures, dsu, greedy, implementation, two pointers

Rotate Columns (hard version)

bitmasks, dp, greedy, sortings

Rotate Columns (easy version)

bitmasks, brute force, dp, greedy, sortings

Paint the Digits

constructive algorithms, greedy, implementation

Paint the Numbers

greedy, implementation, math

Polygons

greedy, math, number theory

Bits And Pieces

bitmasks, dfs and similar, dp, greedy

Restore Permutation

binary search, data structures, greedy, implementation

Gas Pipeline

dp, greedy

Square Filling

constructive algorithms, greedy, implementation

There Are Two Types Of Burgers

brute force, greedy, implementation, math

Almost Equal

constructive algorithms, greedy, math

Kirk and a Binary String (hard version)

data structures, greedy, math, strings

Kirk and a Binary String (easy version)

brute force, greedy, strings

Anna, Svyatoslav and Maps

dp, graphs, greedy, shortest paths

Mislove Has Lost an Array

greedy, math

Complete the Projects (hard version)

dp, greedy

Complete the Projects (easy version)

greedy

Boxers

greedy, sortings

Remove the Substring (hard version)

binary search, greedy, implementation, two pointers

Remove the Substring (easy version)

greedy, implementation

Equal Rectangles

greedy, math

You Are Given a WASD-string...

brute force, data structures, dp, greedy, implementation, math, strings

You Are Given Two Binary Strings...

bitmasks, greedy

Treasure Hunting

binary search, dp, greedy, implementation

Maximum Median

binary search, greedy, math, sortings

Zero Array

greedy, math

Block Adventure

dp, greedy

GCD Groups 2

greedy, number theory, probabilities

Matching vs Independent Set

constructive algorithms, graphs, greedy, sortings

Yet Another Subarray Problem

dp, greedy, math

Array Splitting

greedy, sortings

Pillars

greedy, implementation

DIY Wooden Ladder

greedy, math, sortings

Drinks Choosing

greedy, math

Tokitsukaze and Explosion

binary search, greedy

Tokitsukaze and Duel

brute force, games, greedy

Number Circle

greedy, math, sortings

Vasya And Array

constructive algorithms, greedy, implementation

Vus the Cossack and a Graph

dfs and similar, graphs, greedy, implementation

Vus the Cossack and Numbers

constructive algorithms, greedy, math

Exam in BerSU (hard version)

brute force, data structures, greedy, math

Exam in BerSU (easy version)

greedy, sortings

Candy Box (hard version)

greedy, implementation, sortings

Candy Box (easy version)

greedy, sortings

Beautiful Lyrics

data structures, greedy, strings

A Story of One Country (Hard)

brute force, greedy, sortings

Split a Number

greedy, implementation, strings

Chunga-Changa

greedy, math

Nick and Array

greedy, implementation

Serge and Dining Room

binary search, data structures, graph matchings, greedy, implementation, math, trees

Archaeology

brute force, constructive algorithms, greedy, strings

Prime Graph

constructive algorithms, greedy, math, number theory

Tiles

combinatorics, greedy, math

Prime Minister

greedy

Recover it!

dfs and similar, graphs, greedy, number theory, sortings

Lose it!

dp, greedy, implementation

Divide it!

brute force, greedy, implementation

Minimal Segment Cover

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

Array Splitting

greedy, sortings

Electrification

binary search, brute force, greedy

Ehab Fails to Be Thanos

constructive algorithms, greedy, sortings

Nauuo and Chess

constructive algorithms, greedy

Nauuo and Votes

greedy

Nauuo and Cards

greedy, implementation

Wheels

*special problem, binary search, greedy

Increasing by Modulo

binary search, greedy

Bicolored RBS

constructive algorithms, greedy

Telephone Number

brute force, greedy, strings

Cute Sequences

binary search, brute force, greedy, math

Silent Classroom

combinatorics, greedy

Microtransactions (hard version)

binary search, greedy, implementation

Microtransactions (easy version)

binary search, greedy

Two Arrays and Sum of Functions

greedy, math, sortings

Good String

greedy

Polycarp Training

data structures, greedy, sortings

Eating Soup

greedy, math

Double Matrix

brute force, greedy

Winding polygonal line

constructive algorithms, geometry, greedy, math

Permutation recovery

constructive algorithms, data structures, dfs and similar, graphs, greedy, math, sortings

The Party and Sweets

binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers

Maximum Balanced Circle

constructive algorithms, dp, greedy, two pointers

Minimum Array

binary search, data structures, greedy

N Problems During K Days

constructive algorithms, greedy, math

Increasing Subsequence (hard version)

greedy

Increasing Subsequence (easy version)

greedy

Long Number

greedy

Optimizer

graphs, greedy, hashing, implementation

Match Points

binary search, greedy, sortings, ternary search, two pointers

Ugly Pairs

dfs and similar, greedy, implementation, sortings, strings