Pipes

dp, implementation

Data Structures Fan

binary search, bitmasks, data structures, dp

The Number of Products

combinatorics, dp, implementation

Mr. Kitayuta's Colorful Graph

dfs and similar, dp, dsu, graphs

As Simple as One and Two

dp, greedy

Sequence and Swaps

dp, greedy, sortings

Another Problem on Strings

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

Spy-string

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

Carrying Conundrum

bitmasks, combinatorics, dp, math

Block Sequence

dp

The Sports Festival

dp, greedy

Palindrome Basis

brute force, dp, math, number theory

Say No to Palindromes

brute force, constructive algorithms, dp, strings

Tenzing and Balls

dp

Living Sequence

binary search, dp, math, number theory

Ice and Fire

constructive algorithms, dp, greedy

Cow and Message

brute force, dp, math, strings

Baby Ehab Partitions Again

bitmasks, constructive algorithms, dp, math

Modulo Sum

combinatorics, data structures, dp, two pointers

The Way to Home

dfs and similar, dp, greedy, implementation

Soldier and Number Game

constructive algorithms, dp, math, number theory

K for the Price of One (Easy Version)

dp, greedy, sortings

To Become Max

binary search, brute force, data structures, dp

Longest Simple Cycle

dp, graphs, greedy

Colored Rectangles

dp, greedy, sortings

Zuma

dp

Sending a Sequence Over the Network

dp

Random Events

dp, math, probabilities

Cut 'em all!

dfs and similar, dp, graphs, greedy, trees

Colorful Table

binary search, data structures, dp, implementation, math, two pointers

Dima and a Bad XOR

bitmasks, brute force, constructive algorithms, dp

The Walkway

brute force, dp, greedy, math, number theory

Bouncing Ball

brute force, dp, implementation

Monsters And Spells

binary search, data structures, dp, greedy, implementation, math, two pointers

Even Number Addicts

dp, games, greedy, math

New Year and Ascent Sequence

binary search, combinatorics, data structures, dp, implementation, sortings

Infected Tree

dfs and similar, dp, trees

Zero-Sum Prefixes

brute force, data structures, dp, greedy, implementation

Building a Fence

dp, greedy, implementation, two pointers

Anji's Binary Tree

dfs and similar, dp, trees

Three Blocks Palindrome (easy version)

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

Approximating a Constant Range

dp, implementation, two pointers

Zero Path

brute force, data structures, dp, graphs, greedy, shortest paths

Candies!

data structures, dp, implementation, math

New Skateboard

dp

Physics Practical

binary search, dp, sortings, two pointers

The least round way

dp, math

Odd sum

dp, greedy, implementation

Vlad and an Odd Ordering

binary search, bitmasks, data structures, dp, implementation, math, number theory

Ayoub and Lost Array

combinatorics, dp, math

Torn Lucky Ticket

brute force, dp, hashing, implementation, math

Timofey and a tree

dfs and similar, dp, dsu, graphs, implementation, trees

Chef Monocarp

dp, flows, graph matchings, greedy, math, sortings

Counting Rectangles

brute force, data structures, dp, implementation

Skyscrapers (easy version)

brute force, data structures, dp, greedy

Road Optimization

dp

Good Key, Bad Key

bitmasks, brute force, dp, greedy, math

The Humanoid

brute force, dp, sortings

Nikita and string

brute force, dp

Divan and bitwise operations

bitmasks, combinatorics, constructive algorithms, dp, math

Covered Path

dp, greedy, math

Polycarp and Div 3

dp, greedy, number theory

K for the Price of One (Hard Version)

dp, greedy, sortings

Make Nonzero Sum (hard version)

constructive algorithms, dp, greedy

Cleaning the Phone

binary search, dp, sortings, two pointers

Line Empire

binary search, brute force, dp, greedy, implementation, math

Mysterious Present

dp, sortings

Good Sequences

dp, number theory

Pride

brute force, dp, greedy, math, number theory

Gas Pipeline

dp, greedy

Complex Market Analysis

binary search, dp, implementation, number theory, schedules, two pointers

Nastya and Potions

dfs and similar, dp, graphs, sortings

RGB Substring (hard version)

data structures, dp, implementation, two pointers

Hits Different

data structures, dp, implementation, math

Playoff

combinatorics, constructive algorithms, dp, greedy, math

Armchairs

dp, flows, graph matchings, greedy

Bear and Prime Numbers

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

Substring

dfs and similar, dp, graphs

Chain Reaction

binary search, dp

Game of Credit Cards

data structures, dp, greedy, sortings

Program

data structures, dp, implementation, strings

Geometric Progression

binary search, data structures, dp

Required Length

brute force, dfs and similar, dp, hashing, shortest paths

By Elevator or Stairs?

dp, shortest paths

Tree Cutting

binary search, dp, greedy, implementation, trees

Simple Strings

dp, greedy, strings

Kefa and Dishes

bitmasks, dp

Planar Reflections

brute force, data structures, dp

Odd-Even Subsequence

binary search, dp, dsu, greedy, implementation

Vasya and Multisets

brute force, dp, greedy, implementation, math

Maximum White Subtree

dfs and similar, dp, graphs, trees

Hard Process

binary search, dp, two pointers

Yet Another Yet Another Task

data structures, dp, implementation, two pointers

Functions again

dp, two pointers

Homecoming

binary search, dp, greedy, strings

Maximum splitting

dp, greedy, math, number theory

Maximum Distributed Tree

dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees

Our Tanya is Crying Out Loud

dp, greedy

Santa Claus and Candies

dp, greedy, math

Barcode

dp, matrices