Polycarpus the Safecracker

brute force, dp

Fetch the Treasure

brute force, data structures, graphs, shortest paths

Typewriter

brute force, math

Perun, Ult!

brute force, greedy, sortings

Multiset of Strings

bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees

Function Sum

brute force, combinatorics, dp, fft, math

Hossam and a Letter

brute force, dp, implementation, two pointers

Serval and Music Game

brute force, dp, implementation, math, number theory

Brukhovich and Exams

brute force, greedy, implementation, math, sortings

The Neutral Zone

brute force, math

Balancing Weapons

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

Algebra Flash

bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees

Peterson Polyglot

brute force, dfs and similar, dsu, hashing, strings, trees

Dividing Kingdom II

brute force, data structures, dsu, graphs, sortings

Smooth Sailing (Easy Version)

binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths

Doremy's Experimental Tree

brute force, constructive algorithms, dfs and similar, dsu, sortings, trees

Lottery

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

Narrow Components

brute force, data structures, dp, dsu, math, trees

Nene vs. Monsters (Easy Version)

brute force, implementation, math

Curious Array

brute force, combinatorics, implementation, math

Cats on the Upgrade (easy version)

brute force, data structures, dfs and similar, divide and conquer, dp, graphs, trees

Text Editor

brute force, dp, greedy, strings

Summer Earnings

binary search, bitmasks, brute force, geometry, sortings

ANDfinity

bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs

Almost Fault-Tolerant Database

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

LCM Sum (hard version)

brute force, data structures, math, number theory, two pointers

Removing Graph

brute force, dp, games, graphs, math

Swapping Problem

brute force, constructive algorithms, data structures, sortings

Rollbacks (Easy Version)

brute force, data structures, dfs and similar, trees

Expected diameter of a tree

binary search, brute force, dfs and similar, dp, sortings, trees

Bash Plays with Functions

brute force, combinatorics, dp, number theory

XOR Triangle

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

Yurii Can Do Everything

binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers

Strange Shuffle

binary search, brute force, constructive algorithms, interactive

Sanae and Giant Robot

binary search, brute force, data structures, dsu, greedy, sortings

Complete the MST

bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees

MinimizOR

bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers

Stringforces

binary search, bitmasks, brute force, dp, strings, two pointers

Two Editorials

brute force, dp, greedy, sortings, two pointers

The Number of Subpermutations

brute force, data structures, divide and conquer, hashing, math

Maximum Monogonosity

brute force, dp, math

Xor of 3

brute force, constructive algorithms, greedy, two pointers

Fuzzy Search

bitmasks, brute force, fft

Subset Sums

brute force, data structures

Mocha and Diana (Hard Version)

brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, trees, two pointers

Domino

brute force, implementation

Plane of Tanks: Duel

brute force, dp, math, probabilities

Rectangles and Square

brute force, dp

Cube Problem

brute force, math, number theory

Project Manager

brute force, data structures, implementation

Geometrical Progression

brute force, math, number theory

Magical Permutation

bitmasks, brute force, constructive algorithms, data structures, graphs, math

Lihmuf Balling

binary search, brute force, math

Cinema

brute force, data structures

Mighty Rock Tower

brute force, combinatorics, dp, math, probabilities

Prefix Sums

binary search, brute force, combinatorics, math, matrices

Minimum Modular

brute force, graphs, math, number theory

Pave the Parallelepiped

bitmasks, brute force, combinatorics, math, number theory

Two Permutations (Easy Version)

brute force, constructive algorithms, greedy, number theory

Maximum Matching

bitmasks, brute force, dfs and similar, dp, graphs

Rat Kwesh and Cheese

brute force, constructive algorithms, math

Bacterial Melee

brute force, combinatorics, dp, string suffix structures

Hongcow Buys a Deck of Cards

bitmasks, brute force, dp

Magic Matrix

brute force, divide and conquer, graphs, matrices, trees

Magician and Pigs (Easy Version)

brute force, data structures, implementation

Jellyfish and Math

bitmasks, brute force, dfs and similar, dp, graphs, shortest paths

Permutation and Queries

brute force, data structures, divide and conquer, two pointers

Dog Walking

brute force, greedy, math

Distance Learning Courses in MAC

bitmasks, brute force, data structures, greedy, math

Coloring

brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math

Counting Is Fun (Easy Version)

brute force, combinatorics, dp, math

Interactive Game with Coloring

brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees

Party

bitmasks, brute force, dp, graphs

Long Permutation

brute force, math, two pointers

Multiple Lamps

bitmasks, brute force, constructive algorithms, math, number theory

Restore the Permutation by Sorted Segments

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

Madhouse (Easy version)

brute force, constructive algorithms, interactive, math

Cyclic Shifts Sorting

brute force, constructive algorithms, implementation, sortings

Sasha and Interesting Fact from Graph Theory

brute force, combinatorics, dp, math, trees

Josuke and Complete Graph

binary search, brute force, data structures, math, number theory

Divisors and Table

brute force, dfs and similar, dp, number theory

RBS

binary search, bitmasks, brute force, data structures, dp

Routing

bitmasks, brute force, dfs and similar, dp, graphs

Balance (Hard version)

brute force, data structures, number theory

Red-Blue Matrix

brute force, constructive algorithms, implementation, sortings

Road to 1600

brute force, constructive algorithms

Four Points

brute force, constructive algorithms, flows, geometry, greedy, implementation, math, ternary search

Walk the Runway

bitmasks, brute force, data structures, dp, graphs, implementation, sortings

Minimum Array

binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers

Tournament

brute force, dp, greedy

Chopping Carrots (Hard Version)

brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers

String Set Queries

brute force, data structures, hashing, interactive, string suffix structures, strings

Korney Korneevich and XOR (hard version)

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

Make It Connected

binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers

You Are Given Some Strings...

brute force, string suffix structures, strings

Colorful Operations

brute force, data structures, implementation

A Bit Similar

bitmasks, brute force, hashing, string suffix structures, strings, two pointers

Make Them Similar

bitmasks, brute force, hashing, meet-in-the-middle

Phoenix and Berries

brute force, dp, greedy, math

Mr. Kitayuta's Colorful Graph

brute force, dfs and similar, dsu, graphs