Repentance Is Already on the Way

dp, implementation

Lavencia Oranges

binary search, constructive algorithms, dp, greedy

Backrooms Hill

constructive algorithms, dp, greedy, sortings, two pointers

Prime Destruction

brute force, dp, math, number theory

Maximize the Score

dp, greedy

0mar and Alternating Sums

combinatorics, dp, math

Masha and the Garland

data structures, dp, greedy, implementation, math, number theory, strings

Two Digit Strings

dp, strings

Fair and Square

combinatorics, dp, graphs, math, number theory, trees

Village Guilds

dfs and similar, dp, trees

Brand New Tatar TV Show

binary search, constructive algorithms, dp, games, games, math

XOR, Expression and Two Binary Numbers

bitmasks, divide and conquer, dp, math, number theory

Cost of a Bracket Sequence

brute force, dp, greedy

Seating Arrangement (Easy Version)

binary search, binary search, dp, greedy, greedy, two pointers, two pointers

We Be Flipping (Hard Version)

constructive algorithms, dp, greedy

Cirno and Number (Hard Version)

binary search, dfs and similar, dp, greedy, implementation

Cirno and Number (Easy Version)

binary search, brute force, dp, greedy, implementation

It All Went Sideways

binary search, data structures, dp, greedy

Zhily and Barknights

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

Median Partition

dp, math

Stamina and Tasks

dp, greedy, math

Where's My Water?

data structures, divide and conquer, dp, math

Idiot First Search

dfs and similar, dp, trees

Secret message

bitmasks, brute force, dp, math, number theory

Pizza Delivery

dp, greedy

Product Queries

dp, math, number theory, shortest paths

Sub-RBS (Easy Version)

combinatorics, constructive algorithms, dp, greedy, strings, two pointers

Unfair Game

combinatorics, dp, math

Christmas Tree Decoration

combinatorics, dp, greedy, math

Rae Taylor and Trees (hard version)

binary search, constructive algorithms, data structures, dp, dsu, greedy, implementation, trees

Rae Taylor and Trees (easy version)

binary search, data structures, dp, dsu, greedy, implementation, trees

Range Operation

dp, greedy, math, two pointers

Mukhammadali and the Smooth Array

data structures, dp

Tree, TREE!!!

dfs and similar, dp, math, trees

Monopati

brute force, combinatorics, dp, math, two pointers

Annoying Game

dp, games, greedy

Rabbits

constructive algorithms, dp, greedy, implementation

Non-Descending Arrays

combinatorics, dp, math

From 1 to Infinity

binary search, dp, implementation, math

Stay or Mirror

brute force, data structures, dp, greedy, sortings

Double Perspective

constructive algorithms, dp, dsu, graphs, greedy, sortings

Sum of LDS

brute force, combinatorics, dp, greedy, math

Segments Covering

dp, math, probabilities

Sponsor of Your Problems

dp, greedy, implementation, strings

Gellyfish and Flaming Peony

constructive algorithms, dp, math, number theory

Kirei Attacks the Estate

dfs and similar, dp, greedy, trees

Neo's Escape

binary search, brute force, data structures, dp, dsu, graphs, greedy, implementation

Maximum Subarray Sum

binary search, constructive algorithms, dp, implementation, math

Flower Boy

binary search, dp, greedy, two pointers

Disappearing Permutation

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

Serval and The Formula

bitmasks, constructive algorithms, dp, greedy

Do You Love Your Hero and His Two-Hit Multi-Target Attacks?

binary search, brute force, constructive algorithms, dp, geometry, greedy, math

Tree Jumps

dfs and similar, dp, trees

Beautiful Sequence

combinatorics, dp, greedy, two pointers

Remove the Ends

brute force, constructive algorithms, dp, greedy

Remove Exactly Two

brute force, data structures, dfs and similar, dp, graphs, greedy, sortings, trees

Kevin and Puzzle

2-sat, combinatorics, dp

Bewitching Stargazer

bitmasks, divide and conquer, dp, math

Three Strings

dp, implementation, strings

Sums on Segments

binary search, brute force, data structures, dp, greedy, math

Bridge Renovation

brute force, dp, greedy, math, two pointers

Kachina's Favorite Binary String

dp, greedy, interactive, two pointers

Kousuke's Assignment

data structures, dp, dsu, greedy, math

Sakurako's Field Trip

dp, greedy, two pointers

Alice's Adventures in Cutting Cake

binary search, dp, greedy, two pointers

Add Zeros

brute force, data structures, dfs and similar, dp, graphs, greedy

Alternating String

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

Triple Operations

dp, implementation, math

Maximize the Root

binary search, dfs and similar, dp, greedy, trees

Hungry Games

binary search, dp, two pointers

Mathematical Problem

brute force, dp, greedy, implementation, math, two pointers

Magnitude (Easy Version)

dp, greedy, math

Job Interview

binary search, dp, greedy, implementation, two pointers

How Does the Rook Move?

combinatorics, dp, math

Arrow Path

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

Tree Cutting

binary search, dp, greedy, implementation, trees

Seraphim the Owl

dp, greedy

Rudolf and k Bridges

binary search, data structures, dp, two pointers

Binary Path

dp, greedy, implementation

Find the Different Ones!

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

Vlad and an Odd Ordering

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

Did We Get Everything Covered?

constructive algorithms, dp, greedy, shortest paths, strings

Grouping Increases

data structures, dp, greedy

Anji's Binary Tree

dfs and similar, dp, trees

Torn Lucky Ticket

brute force, dp, hashing, implementation, math

Block Sequence

dp

Make it Alternating

combinatorics, dp, greedy

Jellyfish and Mex

dp

Data Structures Fan

binary search, bitmasks, data structures, dp

Colorful Table

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

Game on Permutation

data structures, dp, games, greedy

The Walkway

brute force, dp, greedy, math, number theory

To Become Max

binary search, brute force, data structures, dp

Nastya and Potions

dfs and similar, dp, graphs, sortings

Vampiric Powers, anyone?

bitmasks, brute force, dp, greedy

Strong Password

binary search, dp, greedy, strings

Particles

dp, greedy, implementation, math

Tenzing and Balls

dp

Copil Copac Draws Trees

dfs and similar, dp, graphs, trees

Hits Different

data structures, dp, implementation, math