Pursuit

binary search, brute force, greedy, sortings

Sets and Union

bitmasks, brute force, constructive algorithms, greedy

Universal Solution

greedy

Chloe and the sequence

binary search, bitmasks, constructive algorithms, implementation

Diverse Substrings

brute force, implementation, strings

Phoenix and Distribution

constructive algorithms, greedy, sortings, strings

Nice Matrix

greedy, implementation, math

Belted Rooms

graphs, implementation

Arrow Path

brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths

Heating

math

LuoTianyi and the Table

greedy, math

Swaps

greedy, math, sortings

Vlad and a Pair of Numbers

bitmasks, constructive algorithms

Distinct Characters Queries

data structures

White-Black Balanced Subtrees

dfs and similar, dp, graphs, trees

LIS or Reverse LIS?

constructive algorithms, greedy, implementation, math

Adding Digits

implementation, math

Playing with Paper

implementation, math

George and Job

dp, implementation

Keyboard Layouts

implementation, strings

And Matching

bitmasks, constructive algorithms

Giga Tower

brute force

Devu, the Dumb Guy

implementation, sortings

Not Assigning

constructive algorithms, dfs and similar, number theory, trees

The Fibonacci Segment

implementation

Indivisible

constructive algorithms

Filya and Homework

implementation, sortings

Equal XOR

bitmasks, constructive algorithms

Contest for Robots

greedy

Appleman and Card Game

greedy

Ugu

brute force, dp, greedy, implementation

City Day

implementation

Is it rated - 2

*special problem, implementation, interactive

Chip and Ribbon

greedy, math

Silent Classroom

combinatorics, greedy

Arya and Bran

implementation

k-Factorization

implementation, math, number theory

Berland Crossword

bitmasks, brute force, greedy, implementation

awoo's Favorite Problem

binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers

Scarborough Fair

implementation

A BIT of a Construction

bitmasks, constructive algorithms, greedy, implementation

Bicycle Chain

brute force, implementation

Game on Ranges

brute force, dfs and similar, implementation, sortings

Lunar New Year and a Wander

data structures, dfs and similar, graphs, greedy, shortest paths

Good ol' Numbers Coloring

math, number theory

Wizards' Duel

implementation, math

Move and Turn

dp, math

Fingerprints

implementation

Incinerate

binary search, brute force, data structures, implementation, math, sortings

Fight with Monsters

greedy, sortings

Motarack's Birthday

binary search, greedy, ternary search

Vitaliy and Pie

greedy, hashing, strings

Cifera

math

Duff in Love

math

Lose it!

dp, greedy, implementation

WOW Factor

dp, strings

Queue Sort

greedy, implementation, sortings

Divine Array

constructive algorithms, implementation

Fox and Number Game

greedy, math

Parsa's Humongous Tree

dfs and similar, divide and conquer, dp, greedy, trees

Almost Equal

constructive algorithms, greedy, math

Array Sharpening

greedy, implementation

Valid BFS?

dfs and similar, graphs, shortest paths, trees

Reverse String

brute force, dp, hashing, implementation, strings

Air Conditioners

data structures, dp, implementation, shortest paths, sortings, two pointers

Sweets Eating

dp, greedy, math, sortings

Kuroni and the Gifts

brute force, constructive algorithms, greedy, sortings

Perfect Squares

brute force, implementation, math

Vaccination

greedy, implementation

Make It Permutation

brute force, greedy, sortings

Seating Arrangements (easy version)

data structures, greedy, sortings

Integer Points

geometry, math

NP-Hard Problem

dfs and similar, graphs

Emotes

greedy, math, sortings

Make Almost Equal With Mod

bitmasks, constructive algorithms, math, number theory

Elections

implementation

Money Trees

binary search, greedy, math, two pointers

Banknotes

greedy, number theory

Dreamoon Likes Permutations

implementation, math

Watching a movie

greedy, implementation

AND Sequences

bitmasks, combinatorics, constructive algorithms, math

Opponents

implementation

Phone Numbers

brute force

Prison Transfer

data structures, implementation

They Are Everywhere

binary search, strings, two pointers

Vanya and Exams

greedy, sortings

Little Elephant and Magic Square

brute force, implementation

Minimum Ties

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math

Great Graphs

constructive algorithms, graphs, greedy, shortest paths, sortings

Buying a TV Set

math

Number Circle

greedy, math, sortings

Add Candies

constructive algorithms, math

Computer Game

binary search, math

Nicholas and Permutation

constructive algorithms, implementation

Non-alternating Deck (easy version)

implementation

Block Adventure

dp, greedy

Yet Another Counting Problem

math, number theory

Make Good

bitmasks, constructive algorithms, math

Minimal Cost

brute force, math

Tear It Apart

brute force, implementation, math, strings