Mad Joe

brute force

Collisions

brute force, implementation, math

Special Grid

brute force, dp, greedy

Table with Letters - 2

brute force, two pointers

Log Stream Analysis

binary search, brute force, implementation, strings

Beautiful IP Addresses

brute force

Xor

brute force

Seller Bob

brute force, dp, greedy

Journey

brute force, constructive algorithms, implementation

Circle of Numbers

brute force, dfs and similar, implementation

Dynamic Problem Scoring

brute force, greedy

Something with XOR Queries

brute force, interactive, probabilities

Sofa Thief

brute force, implementation

New Year Letter

bitmasks, brute force, dp

Restoring Increasing Sequence

binary search, brute force, greedy, implementation

Ants

brute force, implementation

Restore Cube

brute force, geometry

Twisted Circuit

*special problem, brute force, implementation

Elongated Matrix

binary search, bitmasks, brute force, dp, graphs

Let's Play the Hat?

brute force, constructive algorithms, greedy, math

Interactive LowerBound

brute force, interactive, probabilities

Om Nom and Candies

brute force, greedy, math

The World Is Just a Programming Task (Easy Version)

brute force, dp, greedy, implementation

Messages

brute force, dp, greedy, probabilities, sortings

Freedom of Choice

brute force, greedy, implementation

Polycarp and Snakes

brute force, implementation

Multicolored Markers

binary search, brute force, math, number theory

Fibonacci-ish

brute force, dp, hashing, implementation, math

Rotate Columns (easy version)

bitmasks, brute force, dp, greedy, sortings

Petr#

brute force, data structures, hashing, strings

Sum Graph

brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees

Kirk and a Binary String (easy version)

brute force, greedy, strings

Roman Digits

brute force, combinatorics, dp, greedy, math

World of Darkraft: Battle for Azathoth

brute force, data structures, sortings

No Palindromes

brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings

Doremy's Drying Plan (Easy Version)

brute force, data structures, dp, greedy, sortings

Nene and the Mex Operator

bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math

Captain Marmot

brute force, geometry

DZY Loves Modification

brute force, data structures, greedy

Edge Split

brute force, constructive algorithms, dfs and similar, dsu, graphs, probabilities, trees

Small GCD

bitmasks, brute force, dp, math, number theory

Fixed Points

binary search, brute force, dp

Moving Dots

binary search, brute force, combinatorics, math, two pointers

Hanoi Factory

brute force, data structures, dp, greedy, sortings

Masha-forgetful

brute force, constructive algorithms, dp, hashing, implementation, strings

Roman and Numbers

bitmasks, brute force, combinatorics, dp, number theory

Replace With Product

brute force, greedy, math

Number With The Given Amount Of Divisors

brute force, dp, number theory

Exact Change

brute force, constructive algorithms, greedy

Array Queries

brute force, data structures, dp

Maximize the Remaining String

brute force, data structures, dp, greedy, strings

Searchlights

binary search, brute force, data structures, dp, implementation, sortings, two pointers

Different Arrays

brute force, dp, implementation

The Strongest Build

binary search, brute force, data structures, dfs and similar, graphs, greedy, hashing, implementation

Cheap Dinner

brute force, data structures, graphs, greedy, implementation, sortings, two pointers

AB Graph

brute force, constructive algorithms, graphs, greedy, implementation

Accommodation

brute force, dp, greedy, implementation

K-beautiful Strings

binary search, brute force, constructive algorithms, greedy, strings

CGCDSSQ

brute force, data structures, math

Little Pony and Harmony Chest

bitmasks, brute force, dp

Chocolate Bar

brute force, dp

The BOSS Can Count Pairs

brute force, math

Wonder Room

brute force, math

For Gamers. By Gamers.

binary search, brute force, greedy, math, sortings

Pair of Numbers

binary search, brute force, data structures, math, two pointers

505

bitmasks, brute force, constructive algorithms, dp, greedy, implementation

Chip Move

brute force, dp, math

XOR-gun

bitmasks, brute force, constructive algorithms

Choosing flowers

binary search, brute force, data structures, dfs and similar, dp, greedy, sortings, two pointers

Not So Simple Polygon Embedding

binary search, brute force, geometry, math

Breaking the Wall

binary search, brute force, constructive algorithms, greedy, math

SUM and REPLACE

brute force, data structures, dsu, number theory

Another Array Problem

brute force, constructive algorithms, greedy

Compress Words

brute force, hashing, implementation, string suffix structures, strings

The Football Season

brute force, math, number theory

Three Integers

brute force, math

Two Policemen

*special problem, binary search, brute force, math

Group Photo 2 (online mirror version)

brute force, greedy, sortings

Spiral Maximum

brute force, dp

Lucky Permutation

brute force, combinatorics, number theory

Lucky Probability

brute force, probabilities

Hot Bath

binary search, brute force, math

Little Elephant and Elections

brute force, combinatorics, dp

Bear and Up-Down

brute force, implementation

Pairs of Numbers

brute force, dfs and similar, math, number theory

Open Communication

bitmasks, brute force

A Map of the Cat

brute force, interactive

Chocolate

brute force, dfs and similar, math, meet-in-the-middle, number theory

Candy Boxes

brute force, constructive algorithms, math

Skills

binary search, brute force, dp, greedy, sortings, two pointers

Shark

brute force, data structures, dsu, trees

Counting Rectangles is Fun

brute force, divide and conquer, dp

Fancy Number

brute force, greedy, sortings, strings

Spongebob and Squares

brute force, math

Video Cards

brute force, data structures, implementation, math, number theory

Chladni Figure

brute force, strings

Expand the Path

brute force, combinatorics, data structures, implementation, math

Flag

brute force, combinatorics, dp, implementation

New Year and Fireworks

brute force, data structures, dfs and similar, dp, implementation

GCD on a grid

brute force, dfs and similar, dp, implementation, math, number theory