String Modification

brute force, constructive algorithms, implementation, sortings, strings

Grade Allocation

implementation

Dead Pixel

implementation

Happy New Year

bitmasks, dp, implementation

Different Rules

constructive algorithms, greedy, implementation, math

Fast Food Restaurant

brute force, greedy, implementation

Adding Powers

bitmasks, greedy, implementation, math, number theory, ternary search

Moving Points

data structures, divide and conquer, implementation, sortings

Add Odd or Subtract Even

greedy, implementation, math

Double Elimination

dp, implementation

Cow and Treats

binary search, combinatorics, dp, greedy, implementation, math

Cow and Haybales

greedy, implementation

Kuroni and the Score Distribution

constructive algorithms, greedy, implementation, math

Air Conditioner

dp, greedy, implementation, sortings, two pointers

Longest Palindrome

brute force, constructive algorithms, greedy, implementation, strings

Number of Components

dsu, implementation

Perfect Keyboard

dfs and similar, greedy, implementation

Erasing Zeroes

implementation, strings

Super Jaber

dfs and similar, graphs, implementation, shortest paths

Nanosoft

binary search, data structures, dp, implementation

Time to Run

constructive algorithms, graphs, implementation

Three Strings

implementation, strings

Assigning to Classes

greedy, implementation, sortings

Non-zero

implementation, math

Movie Fan

*special problem, data structures, greedy, implementation, sortings

Cartoons

*special problem, implementation, sortings

Likes Display

*special problem, implementation

Yet Another Walking Robot

data structures, implementation

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

Array Sharpening

greedy, implementation

Mind Control

brute force, data structures, implementation

Hyperset

brute force, data structures, implementation

Angry Students

greedy, implementation

Harry The Potter

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

Just Eat It!

dp, greedy, implementation

New Year and Ascent Sequence

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

New Year and Naming

implementation, strings

Temporarily unavailable

implementation, math

Suffix Three

implementation

Beingawesomeism

implementation, math

Cut and Paste

implementation, math

Stack of Presents

data structures, implementation

Verse For Santa

binary search, brute force, implementation

Berry Jam

data structures, dp, greedy, implementation

Shuffle Hashing

brute force, implementation, strings

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

Portals

data structures, dp, greedy, implementation, sortings

Shawarma Tent

brute force, geometry, greedy, implementation

Long Beautiful Integer

constructive algorithms, greedy, implementation, strings

Just Arrange the Icons

greedy, implementation, math

Intriguing Selection

brute force, constructive algorithms, implementation, interactive, sortings

Spaceship Solitaire

data structures, greedy, implementation

Decreasing Debts

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

Beautiful Numbers

data structures, implementation, math, two pointers

Beautiful Regional Contest

greedy, implementation

Editor

data structures, implementation

PIN Codes

greedy, implementation

Dominated Subarray

greedy, implementation, sortings, strings, two pointers

League of Leesins

constructive algorithms, implementation

Fridge Lockers

graphs, implementation

Feeding Chicken

constructive algorithms, greedy, implementation

Silly Mistake

greedy, implementation

Single Push

implementation

Twin Buildings

greedy, implementation

Even Path

data structures, implementation

Data Center

brute force, implementation

The Coronation

graphs, implementation

Berstagram

implementation

Good Numbers (easy version)

brute force, greedy, implementation

The World Is Just a Programming Task (Easy Version)

brute force, dp, greedy, implementation

Chips

constructive algorithms, implementation

Paint the Tree

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

Rooms and Staircases

brute force, implementation

Maximum Square

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

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

Alice and the Doll

brute force, data structures, greedy, implementation

Labs

constructive algorithms, greedy, implementation

Pipes

dp, implementation

Social Network (hard version)

data structures, implementation

Social Network (easy version)

implementation

Ania and Minimizing

greedy, implementation

Dawid and Bags of Candies

brute force, 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