Obtain a Permutation

greedy, implementation, math

MEX maximizing

data structures, greedy, implementation, math

Collecting Packages

implementation, sortings

ConneR and the A.R.C. Markland-N

binary search, brute force, implementation

Aroma's Search

brute force, constructive algorithms, geometry, greedy, implementation

NEKO's Maze Game

data structures, dsu, implementation

Just Eat It!

dp, greedy, implementation

Hyperset

brute force, data structures, implementation

Angry Students

greedy, implementation

Harry The Potter

brute force, constructive algorithms, dp, fft, implementation, math

New Year and Ascent Sequence

binary search, combinatorics, data structures, dp, implementation, sortings

New Year and Naming

implementation, strings

Stack of Presents

data structures, implementation

Verse For Santa

binary search, brute force, implementation

Temporarily unavailable

implementation, math

Long Beautiful Integer

constructive algorithms, greedy, implementation, strings

Berry Jam

data structures, dp, greedy, implementation

Shuffle Hashing

brute force, implementation, strings

Spaceship Solitaire

data structures, greedy, implementation

Decreasing Debts

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

Portals

data structures, dp, greedy, implementation, sortings

Shawarma Tent

brute force, geometry, greedy, implementation

Suffix Three

implementation

Beingawesomeism

implementation, math

Cut and Paste

implementation, math

Let's Play the Words?

data structures, hashing, implementation, math

Happy Birthday, Polycarp!

implementation

Yet Another Broken Keyboard

combinatorics, dp, implementation

Snow Walking Robot

constructive algorithms, greedy, implementation

Beautiful Numbers

data structures, implementation, math, two pointers

Beautiful Regional Contest

greedy, implementation

Just Arrange the Icons

greedy, implementation, math

Intriguing Selection

brute force, constructive algorithms, implementation, interactive, sortings

Editor

data structures, implementation

PIN Codes

greedy, implementation

Feeding Chicken

constructive algorithms, greedy, implementation

League of Leesins

constructive algorithms, implementation

Fridge Lockers

graphs, implementation

Silly Mistake

greedy, implementation

Single Push

implementation

Dominated Subarray

greedy, implementation, sortings, strings, two pointers

Maximum Square

implementation

Data Center

brute force, implementation

The Coronation

graphs, implementation

Berstagram

implementation

TV Subscriptions (Hard Version)

implementation, two pointers

TV Subscriptions (Easy Version)

implementation

Twin Buildings

greedy, implementation

Even Path

data structures, implementation

Good Numbers (easy version)

brute force, greedy, implementation

The World Is Just a Programming Task (Easy Version)

brute force, dp, greedy, implementation

Swiper, no swiping!

graphs, implementation

Turtle

dp, implementation

Queue in the Train

data structures, greedy, implementation

The World Is Just a Programming Task (Hard Version)

implementation

Alice and the Doll

brute force, data structures, greedy, implementation

Labs

constructive algorithms, greedy, implementation

Balanced Playlist

binary search, data structures, implementation

Balanced Removals (Harder)

binary search, constructive algorithms, divide and conquer, greedy, implementation, sortings

Balanced Rating Changes

implementation, math

Chips

constructive algorithms, implementation

Paint the Tree

brute force, constructive algorithms, dp, graphs, implementation, trees

Rooms and Staircases

brute force, implementation

Pipes

dp, implementation

Social Network (hard version)

data structures, implementation

Social Network (easy version)

implementation

One Node is Gone

constructive algorithms, implementation, trees

Complete Tripartite

brute force, constructive algorithms, graphs, hashing, implementation

Filling the Grid

implementation, math

Distinct Digits

brute force, implementation

Ania and Minimizing

greedy, implementation

Dawid and Bags of Candies

brute force, implementation

Shooting

greedy, implementation, sortings

Cards

implementation, sortings, strings

The Number of Products

combinatorics, dp, implementation

Yellow Cards

greedy, implementation, math

Harvester

implementation

Periodic integer number

implementation, strings

Into Blocks (easy version)

data structures, dsu, greedy, implementation, two pointers

Paint the Digits

constructive algorithms, greedy, implementation

Koala and Lights

implementation, math, number theory

Paint the Numbers

greedy, implementation, math

kotlinkotlinkotlinkotlin...

*special problem, graphs, implementation, strings

Traveling Around the Golden Ring of Berland

*special problem, implementation

Three Problems

*special problem, implementation

Sum Queries?

data structures, greedy, implementation, math

Unstable String Sort

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

Equalizing by Division (easy version)

brute force, implementation

Bad Prices

data structures, implementation

Red Blue Tree

data structures, implementation, trees

Let Them Slide

data structures, implementation

Restore Permutation

binary search, data structures, greedy, implementation

Uniqueness

binary search, brute force, implementation, two pointers

Remainder Problem

brute force, data structures, implementation

Square Filling

constructive algorithms, greedy, implementation

There Are Two Types Of Burgers

brute force, greedy, implementation, math

Make Product Equal One

dp, implementation

Palindromic Paths

implementation, interactive

Remove the Substring (hard version)

binary search, greedy, implementation, two pointers

Remove the Substring (easy version)

greedy, implementation