Sequence with Digits

brute force, implementation, math

Ternary String

binary search, dp, implementation, two pointers

Special Elements

brute force, implementation, two pointers

Alice, Bob and Candies

implementation

Sum of Round Numbers

implementation, math

Skier

data structures, implementation

Square?

brute force, implementation, math

A+B (Trial Problem)

implementation

Orac and Game of Life

dfs and similar, graphs, implementation, shortest paths

Phoenix and Science

binary search, constructive algorithms, greedy, implementation, math

Restore the Permutation by Sorted Segments

brute force, constructive algorithms, data structures, greedy, implementation

Nastya and Door

greedy, implementation

Nastya and Strange Generator

brute force, data structures, greedy, implementation

Filling Diamonds

brute force, dp, implementation, math

Kana and Dragon Quest game

greedy, implementation, math

Anti-Sudoku

constructive algorithms, implementation

Two Teams Composing

binary search, greedy, implementation, sortings

Minimum Euler Cycle

constructive algorithms, graphs, greedy, implementation

Level Statistics

implementation, math

Kate and imperfection

greedy, implementation, math, number theory, sortings, two pointers

Challenges in school №41

brute force, constructive algorithms, games, graphs, greedy, implementation, sortings

Eugene and an array

binary search, data structures, implementation, two pointers

Kind Anton

greedy, implementation

K-Complete Word

dfs and similar, dsu, greedy, implementation, strings

Exercising Walk

greedy, implementation, math

Jordan Smiley

*special problem, dfs and similar, geometry, implementation

Again?

*special problem, implementation

Dreamoon Likes Permutations

implementation, math

Dreamoon and Ranking Collection

implementation

Drazil Likes Heap

constructive algorithms, data structures, greedy, implementation

Dreamoon Likes Coloring

constructive algorithms, greedy, implementation, math

Ternary XOR

greedy, implementation

K-th Beautiful String

binary search, brute force, combinatorics, implementation, math

Game with Chips

constructive algorithms, implementation

Maximums

implementation, math

CopyCopyCopyCopyCopy

greedy, implementation

Sleeping Schedule

dp, implementation

Frog Jumps

binary search, data structures, dfs and similar, greedy, implementation

Yet Another Tetris Problem

implementation, number theory

Count Subrectangles

binary search, greedy, implementation

Even Subset Sum Problem

brute force, dp, greedy, implementation

Nash Matrix

constructive algorithms, dfs and similar, graphs, implementation

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