Maximum Distributed Tree

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

Maximum White Subtree

dfs and similar, dp, graphs, trees

Kefa and Dishes

bitmasks, dp

Armchairs

dp, flows, graph matchings, greedy

Cleaning the Phone

binary search, dp, sortings, two pointers

Chef Monocarp

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

Colored Rectangles

dp, greedy, sortings

The Sports Festival

dp, greedy

Carousel

constructive algorithms, dp, graphs, greedy, math

Distance in Tree

dfs and similar, dp, trees

Fix the String

*special problem, bitmasks, dp, greedy

Magic Tricks

*special problem, dp, graphs

Game on Tree (Medium)

dfs and similar, dp, games, trees

Фото на память - 2 (round version)

dp, greedy

Phone Number

dp

Word Cut

dp

Plus and xor

dp, greedy, math

Buses

binary search, data structures, dp

Substring and Subsequence

dp

Clear Symmetry

constructive algorithms, dp, math

Animals

dp, greedy

MADMAX

dfs and similar, dp, games, graphs

Portal

brute force, data structures, dp, greedy, implementation

Cow Program

dfs and similar, dp, graphs

Riverside Curio

data structures, dp, greedy

Playing Piano

constructive algorithms, dp

XOR Equation

dp, math

Robbers' watch

brute force, combinatorics, dp, math

Mahmoud and a Message

brute force, dp, greedy, strings

Efim and Strange Grade

dp, implementation, math

Shaass and Bookshelf

dp, greedy

You Are Given a Decimal String...

brute force, dp, shortest paths

Up the Strip (simplified version)

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

Stars Drawing (Easy Edition)

brute force, dp, greedy

Medium Design

brute force, data structures, dp, greedy, sortings

Mike and gcd problem

dp, greedy, number theory

Gardening Friends

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

Buns

dp

Minimum Maximum Distance

dfs and similar, dp, graphs, shortest paths, trees

Greenhouse Effect

dp

Two Hundred Twenty One (easy version)

data structures, dp, math

Minimizing the Sum

dp, implementation

Yet Another Monster Fight

binary search, dp, greedy, implementation, math

Matrix Cascade

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

Game Master

data structures, dfs and similar, dp, graphs, greedy, two pointers

Anna, Svyatoslav and Maps

dp, graphs, greedy, shortest paths

New Year and the Permutation Concatenation

combinatorics, dp, math

Sum of XOR Functions

bitmasks, combinatorics, divide and conquer, dp, math

Ilya and Escalator

combinatorics, dp, math, probabilities

Valiant's New Map

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

Omkar and Determination

data structures, dp

Permute Digits

dp, greedy

Ivan the Fool and the Probability Theory

combinatorics, dp, math

Gambling

data structures, dp, greedy, math

The Number of Imposters

constructive algorithms, dfs and similar, dp, dsu, graphs

Don't Blame Me

bitmasks, combinatorics, dp, math

Bicolorings

bitmasks, dp

Yet Another Monster Killing Problem

binary search, data structures, dp, greedy, sortings, two pointers

Problem with Random Tests

brute force, dp, greedy, probabilities

Boris and His Amazing Haircut

constructive algorithms, data structures, dp, dsu, greedy, sortings

Nastya and Scoreboard

bitmasks, dp, graphs, greedy

Berry Jam

data structures, dp, greedy, implementation

Bakry and Partitioning

bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees

Pekora and Trampoline

brute force, data structures, dp, greedy, implementation

Correct Placement

binary search, data structures, dp, sortings, two pointers

Coloring Trees

dp

Short Task

brute force, dp, math, number theory

Square-Free Division (easy version)

data structures, dp, greedy, math, number theory, two pointers

Ladder

dp, implementation, two pointers

Fake Plastic Trees

dfs and similar, dp, greedy, trees

Bargain

combinatorics, dp, math

Xenia and Weights

constructive algorithms, dfs and similar, dp, graphs, greedy, shortest paths

Moamen and XOR

bitmasks, combinatorics, dp, math, matrices

Multiplicity

data structures, dp, implementation, math, number theory

Journey

dfs and similar, dp, dsu, implementation

Omkar and Bed Wars

dp, greedy

Kavi on Pairing Duty

combinatorics, dp, math

Running Miles

brute force, dp, greedy

Choosing Capital for Treeland

dfs and similar, dp, graphs, trees

MEX and Increments

constructive algorithms, data structures, dp, greedy, implementation, math, sortings

Barcode

dp, matrices

By Elevator or Stairs?

dp, shortest paths

Required Length

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

Geometric Progression

binary search, data structures, dp

Program

data structures, dp, implementation, strings

Substring

dfs and similar, dp, graphs

Bear and Prime Numbers

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

Mysterious Present

dp, sortings

Road Optimization

dp

Zero Path

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

Three Blocks Palindrome (easy version)

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

Monsters And Spells

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

Soldier and Number Game

constructive algorithms, dp, math, number theory

Baby Ehab Partitions Again

bitmasks, constructive algorithms, dp, math

Spy-string

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

Sleeping Schedule

dp, implementation

Little Girl and Maximum XOR

bitmasks, dp, greedy, implementation, math

Greg and Graph

dp, graphs, shortest paths

Color the Fence

data structures, dp, greedy, implementation

George and Job

dp, implementation