Tiling Terrace

brute force, dp

Find String in a Grid

data structures, dp, strings, trees

Cleaning Robots

dp, trees

Voting (Easy Version)

data structures, dp, greedy

Discarding Game

dp, greedy, two pointers

Conference Problem

dp

Maximum Weight Subset

dp, trees

Daniel and Spring Cleaning

bitmasks, brute force, combinatorics, dp

Hyakugoku and Ladders

dp, probabilities, shortest paths

Sum Balance

bitmasks, dfs and similar, dp, graphs

Turtle

dp, implementation

The Maximum Subtree

dfs and similar, dp, graphs, trees

Keyboard Purchase

bitmasks, dp

Balanced Distribution

data structures, dp, greedy

Balanced Domino Placements

combinatorics, dp

Balanced Binary Search Trees

dp, math

Alice and the Unfair Game

binary search, data structures, dp, dsu

Yet Another Substring Reverse

bitmasks, dp

Another Filling the Grid

combinatorics, dp, math

Wrong Answer on test 233 (Easy Version)

dp

To Make 1

bitmasks, constructive algorithms, dp, greedy, number theory

Rock Is Push

binary search, dp

Stack Exterminable Arrays

data structures, divide and conquer, dp, hashing

Graph And Numbers

bitmasks, brute force, combinatorics, dp, meet-in-the-middle

Tourism

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

Jumping Transformers

dp

BubbleReactor

dp, graphs

Marbles

bitmasks, dp

Road Repair in Treeland

*special problem, binary search, dp, trees

Mateusz and Escape Room

dp

Rotate Columns (hard version)

bitmasks, dp, greedy, sortings

Bits And Pieces

bitmasks, dfs and similar, dp, greedy

Natasha, Sasha and the Prefix Sums

combinatorics, dp, math, number theory

Complete the Projects (hard version)

dp, greedy

Graph Traveler

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

Rectangle Painting 1

dp

Coloring Game

dp, games, matrices

Culture Code

binary search, combinatorics, data structures, dp, shortest paths, sortings

Another Meme Problem

dp

Crossword Expert

combinatorics, dp, number theory, probabilities, two pointers

Make Equal

dp

Array Beauty

dp

Expected Square Beauty

dp, math, probabilities

Playlist for Polycarp (hard version)

combinatorics, dp

Product Oriented Recurrence

dp, math, matrices, number theory

Complete Mirror

constructive algorithms, dfs and similar, dp, hashing, implementation, trees

Fedor Runs for President

data structures, dp, trees

Long Colorful Strip

dp

Short Colorful Strip

combinatorics, dfs and similar, dp

Yet Another Partiton Problem

data structures, divide and conquer, dp, geometry, two pointers

Minimal Segment Cover

data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees

Ehab and the Expected GCD Problem

combinatorics, dp, math, number theory

Nauuo and Pictures (hard version)

dp, probabilities

Nauuo and Pictures (easy version)

dp, probabilities

Anagram Paths

dp, implementation, trees

And Reachability

bitmasks, dp

Density of subarrays

dp, math

Card Bag

dp, math, probabilities

0-1-Tree

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

Delivery Oligopoly

brute force, dp, graphs

Serval and Bonus Problem

combinatorics, dp, math, probabilities

Neko Rules the Catniverse (Large Version)

bitmasks, dp, matrices

Neko Rules the Catniverse (Small Version)

bitmasks, dp, matrices

Sonya and Informatics

combinatorics, dp, matrices, probabilities

Abandoning Roads

brute force, dp, graphs, greedy

Three Religions

dp, implementation, strings

Satanic Panic

dp, geometry

Zoning Restrictions

dp, flows, graphs

Leaf Partition

dp, trees

Two Merged Sequences

dp, greedy

Foreigner

dp

Palindrome-less Arrays

combinatorics, divide and conquer, dp

Steps to One

dp, math, number theory, probabilities

Museums Tour

dp, graphs, implementation

Greedy Subsequences

data structures, dp, trees

Knapsack

dfs and similar, dp, greedy

Most Dangerous Shark

data structures, dp, two pointers

String Multiplication

dp, greedy, strings

Isolation

data structures, dp

Morse Code

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

Secret Letters

data structures, dp, greedy

Power Tree

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

Niyaz and Small Degrees

data structures, dp, trees

Tree Cutting (Hard Version)

combinatorics, dfs and similar, dp, trees

Crisp String

bitmasks, dp

Tree

data structures, dfs and similar, dp, graphs, trees

Destroy the Colony

combinatorics, dp, math

Modest Substrings

dp, strings

Jongmah

dp

Sasha and Interesting Fact from Graph Theory

brute force, combinatorics, dp, math, trees

Vasya and Maximum Profit

binary search, constructive algorithms, data structures, dp, dsu

Vasya and Endless Credits

dp, flows, graph matchings, graphs, sortings

Vasya and Binary String

dp

Helping Hiasat

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

Professional layer

bitmasks, dp

Trucks and Cities

binary search, dp

Cookies

binary search, data structures, dfs and similar, dp, games, trees

Mateusz and an Infinite Sequence

bitmasks, brute force, dp, strings

Vladislav and a Great Legend

combinatorics, dp, trees

Makoto and a Blackboard

dp, math, number theory, probabilities