Leaving the Bar

brute force, data structures, geometry, greedy, math, sortings

Daniel and Spring Cleaning

bitmasks, brute force, combinatorics, dp

Delete a Segment

brute force, constructive algorithms, data structures, dp, graphs, sortings, trees, two pointers

Red-Black Pepper

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

Alice and the Doll

brute force, data structures, greedy, implementation

AmShZ and G.O.A.T.

binary search, brute force, greedy, implementation, math

Sasha and the Wedding Binary Search Tree

brute force, combinatorics, data structures, dfs and similar, math, trees

PermutationForces II

brute force, combinatorics, greedy, sortings, trees, two pointers

There Should Be a Lot of Maximums

brute force, data structures, dfs and similar, dp, trees, two pointers

Modular Sequence

brute force, constructive algorithms, dp, graphs, greedy, math, number theory

Multitest Generator

brute force, dp

Sasha and the Happy Tree Cutting

bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees

Beautiful Rectangle

brute force, combinatorics, constructive algorithms, data structures, greedy, math

Rubik's Cube Coloring (hard version)

brute force, dp, implementation, math, trees

Infinite Card Game

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

Sonya and Matrix

brute force, constructive algorithms, implementation

Three Chairs

bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings

Rectangle Shrinking

binary search, brute force, data structures, greedy, implementation, two pointers

Bamboo Partition

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

Li Hua and Array

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

Restoring the Expression

brute force, hashing, math

Decomposition

binary search, brute force, data structures, divide and conquer, dp, two pointers

wxhtzdy ORO Tree

binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees

New Passenger Trams

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

Barrels and boxes

brute force, combinatorics, math, number theory, probabilities

Little Victor and Set

brute force, constructive algorithms, math

Graph Traveler

brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory

Help Caretaker

brute force, dp

Restore a Number

brute force, constructive algorithms, strings

Turtle Magic: Royal Turtle Shell Pattern

bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math

The Most Reckless Defense

bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths

Monsters and Potions

brute force, dp, greedy, implementation

Curfew

binary search, brute force, greedy, sortings

Tiling Terrace

brute force, dp

Edo and Magnets

brute force, greedy, implementation, two pointers

Chip Play

brute force, data structures, implementation

Vanya and Balloons

binary search, brute force, dp, implementation

Beautiful Set

brute force, number theory

Biathlon Track

binary search, brute force, constructive algorithms, data structures, dp

Dating

brute force, dfs and similar, graphs, trees

Rats

brute force, dfs and similar, graphs, implementation, shortest paths

Awards For Contestants

brute force, data structures, dp

PE Lesson

brute force, dp

Party Organization

brute force, math, probabilities

Dima and Kicks

brute force, dsu, graphs, implementation

Race

brute force, implementation, two pointers

Pasha and Pipe

binary search, brute force, combinatorics, dp, implementation

Race

brute force, implementation

Toys

brute force, combinatorics

Игра в Девятку III

*special problem, brute force

Karen and Supermarket

brute force, dp, trees

Love-Hate

bitmasks, brute force, dp, probabilities

Fib-tree

brute force, dfs and similar, divide and conquer, number theory, trees

Mr. Kitayuta's Colorful Graph

brute force, dfs and similar, dsu, graphs

Phoenix and Berries

brute force, dp, greedy, math

Make Them Similar

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

A Bit Similar

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

Colorful Operations

brute force, data structures, implementation

You Are Given Some Strings...

brute force, string suffix structures, strings

Make It Connected

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

Korney Korneevich and XOR (hard version)

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

String Set Queries

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

Chopping Carrots (Hard Version)

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

Tournament

brute force, dp, greedy

Minimum Array

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

Walk the Runway

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

Four Points

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

Road to 1600

brute force, constructive algorithms

Red-Blue Matrix

brute force, constructive algorithms, implementation, sortings

Balance (Hard version)

brute force, data structures, number theory

Routing

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

RBS

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

Divisors and Table

brute force, dfs and similar, dp, number theory

Josuke and Complete Graph

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

Sasha and Interesting Fact from Graph Theory

brute force, combinatorics, dp, math, trees

Cyclic Shifts Sorting

brute force, constructive algorithms, implementation, sortings

Madhouse (Easy version)

brute force, constructive algorithms, interactive, math

Restore the Permutation by Sorted Segments

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

Multiple Lamps

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

Long Permutation

brute force, math, two pointers

Party

bitmasks, brute force, dp, graphs

Interactive Game with Coloring

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

Counting Is Fun (Easy Version)

brute force, combinatorics, dp, math

Coloring

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

Distance Learning Courses in MAC

bitmasks, brute force, data structures, greedy, math

Dog Walking

brute force, greedy, math

Permutation and Queries

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

Jellyfish and Math

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

Magician and Pigs (Easy Version)

brute force, data structures, implementation

Magic Matrix

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

Hongcow Buys a Deck of Cards

bitmasks, brute force, dp

Bacterial Melee

brute force, combinatorics, dp, string suffix structures

Rat Kwesh and Cheese

brute force, constructive algorithms, math

Maximum Matching

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

Two Permutations (Easy Version)

brute force, constructive algorithms, greedy, number theory

Pave the Parallelepiped

bitmasks, brute force, combinatorics, math, number theory

Minimum Modular

brute force, graphs, math, number theory

Prefix Sums

binary search, brute force, combinatorics, math, matrices

Mighty Rock Tower

brute force, combinatorics, dp, math, probabilities

Cinema

brute force, data structures