AGAGA XOOORRR

bitmasks, brute force, dp, greedy

Maximum Sum

dp, greedy, math

Nezzar and Lucky Number

brute force, dp, greedy, math

Rudolf and the Another Competition

constructive algorithms, data structures, dp, greedy, sortings

Odd Subarrays

dp, greedy

Subsequence Addition (Easy Version)

brute force, data structures, dp, greedy, implementation, sortings

Password

binary search, dp, hashing, string suffix structures, strings

Subsequence Addition (Hard Version)

bitmasks, dp, greedy, implementation, sortings

Chess For Three

brute force, dp, implementation, math

Quasi Binary

constructive algorithms, dp, greedy, implementation

Penalty

bitmasks, brute force, dp, greedy

Canine poetry

dp, greedy, strings

Apple Tree

combinatorics, dfs and similar, dp, math, trees

Consecutive Subsequence

dp

MAX-MEX Cut

bitmasks, constructive algorithms, dp, greedy

Pokémon Army (easy version)

constructive algorithms, dp, greedy

Getting Zero

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

Sasha and His Trip

dp, greedy, math

Grouping Increases

data structures, dp, greedy

Build Permutation

constructive algorithms, dp, math

Yet Another Coin Problem

brute force, dp, greedy, math

Constanze's Machine

dp

Polo the Penguin and Matrix

brute force, dp, implementation, sortings, ternary search

Rudolf and the Ball Game

dfs and similar, dp, implementation

Caesar's Legions

dp

Replace and Keep Sorted

dp, implementation, math

Creating the Contest

dp, greedy, math

Another Permutation Problem

brute force, dp, greedy, math

Monsters Attack!

dp, greedy, implementation

Making Towers

dp, greedy, math

Unstable String

binary search, dp, greedy, implementation, strings, two pointers

Laura and Operations

dp, math

2^Sort

data structures, dp, sortings, two pointers

Journey

dfs and similar, dp, graphs, probabilities, trees

Remove One Element

brute force, dp

Array Walk

brute force, dp, greedy

Air Conditioner

dp, greedy, implementation, sortings, two pointers

Reposts

*special problem, dfs and similar, dp, graphs, trees

Hard problem

dp, strings

Maximum width

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

Saving the City

dp, greedy, math, sortings

Journey Planning

data structures, dp, greedy, math, sortings

Vitamins

bitmasks, brute force, dp, implementation

String Equality

dp, greedy, hashing, implementation, strings

Make it Alternating

combinatorics, dp, greedy

Maximum Sum on Even Positions

divide and conquer, dp, greedy, implementation

Particles

dp, greedy, implementation, math

Diverse Garland

constructive algorithms, dp, greedy

MEX and Array

brute force, dp, greedy, math

Maximum Sum of Products

brute force, dp, implementation, math, two pointers

Arrow Path

brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths

Cyclic Permutations

combinatorics, dp, graphs, math

Qpwoeirut And The City

dp, flows, greedy, implementation

Make Nonzero Sum (easy version)

constructive algorithms, dp, greedy

White-Black Balanced Subtrees

dfs and similar, dp, graphs, trees

George and Job

dp, implementation

WOW Factor

dp, strings

Ugu

brute force, dp, greedy, implementation

Move and Turn

dp, math

Parsa's Humongous Tree

dfs and similar, divide and conquer, dp, greedy, trees

Air Conditioners

data structures, dp, implementation, shortest paths, sortings, two pointers

Lose it!

dp, greedy, implementation

Reverse String

brute force, dp, hashing, implementation, strings

Sweets Eating

dp, greedy, math, sortings

Block Adventure

dp, greedy

Distance in Tree

dfs and similar, dp, trees

Diluc and Kaeya

data structures, dp, hashing, number theory

Boboniu and Bit Operations

bitmasks, brute force, dp, greedy

Color the Fence

data structures, dp, greedy, implementation

Restricted RPS

constructive algorithms, dp, greedy

Increase Subarray Sums

brute force, dp, greedy, implementation

Strong Password

binary search, dp, greedy, strings

Backspace

dp, greedy, strings, two pointers

Add One

dp, matrices

Factorials and Powers of Two

bitmasks, brute force, constructive algorithms, dp, math

Binary Path

dp, greedy, implementation

Greg and Graph

dp, graphs, shortest paths

Hamiltonian Wall

dp, implementation

Three displays

brute force, dp, implementation

Make Them Equal

dp, greedy

Little Girl and Maximum XOR

bitmasks, dp, greedy, implementation, math

Collecting Game

binary search, dp, greedy, sortings, two pointers

Hossam and Friends

binary search, constructive algorithms, dp, two pointers

Cutting

dp, greedy, sortings

Longest Regular Bracket Sequence

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

Sleeping Schedule

dp, implementation

Carousel

constructive algorithms, dp, graphs, greedy, math

Obtain The String

dp, greedy, strings

Little Alawn's Puzzle

combinatorics, dp, dsu, graphs, math

Copil Copac Draws Trees

dfs and similar, dp, graphs, trees

Game on Permutation

data structures, dp, games, greedy

Did We Get Everything Covered?

constructive algorithms, dp, greedy, shortest paths, strings

Minimum Triangulation

dp, greedy, math

Find the Spruce

brute force, dp, implementation

Seraphim the Owl

dp, greedy

Two Arrays

combinatorics, dp

Erase and Extend (Easy Version)

binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers

Strange Test

binary search, bitmasks, brute force, dp, math

Vampiric Powers, anyone?

bitmasks, brute force, dp, greedy

DZY Loves Sequences

dp, implementation, two pointers