Bears and Juice

dp, math, meet-in-the-middle

Bear and Destroying Subtrees

dp, math, probabilities, trees

Levels and Regions

dp

Little Artem and Random Variable

dp, implementation, math, probabilities

The Chocolate Spree

dfs and similar, dp, graphs, trees

Fibonacci-ish

brute force, dp, hashing, implementation, math

Thief in a Shop

divide and conquer, dp, fft, math

Product Sum

data structures, dp, geometry

Famil Door and Roads

combinatorics, data structures, dfs and similar, dp, probabilities, trees

Babaei and Birthday Cake

data structures, dp

Famil Door and Brackets

dp, strings

Magic Numbers

dp

Preorder Test

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

Raffles

data structures, dp, greedy, math

Group Projects

dp

Transforming Sequence

combinatorics, dp, fft, math

Electric Charges

binary search, dp

Array GCD

dp, greedy, number theory

Wet Shark and Blocks

dp, matrices

Combining Slimes

dp, math, matrices, probabilities

Hamiltonian Spanning Tree

dfs and similar, dp, graph matchings, greedy, trees

Running Track

dp, greedy, strings, trees

Puzzle Lover

dp, hashing, strings

Kingdom and its Cities

dfs and similar, divide and conquer, dp, graphs, sortings, trees

Simba on the Circle

dp

New Year and Ancient Prophecy

dp, hashing, strings

A Museum Robbery

data structures, dp

Kleofáš and the n-thlon

dp, math, probabilities

Sandy and Nuts

bitmasks, dp, trees

Chocolate Bar

brute force, dp

Wilbur and Strings

dfs and similar, dp, graphs, strings

Wilbur and Trees

dp, math, probabilities, sortings

Strange Calculation and Cats

dp, matrices

Super M

dfs and similar, dp, graphs, trees

Top Secret Task

dp

Duff in Beach

dp

Digits of Number Pi

dp, implementation, strings

Boolean Function

bitmasks, dp, expression parsing

Number of Binominal Coefficients

dp, math, number theory

Zublicanes and Mumocrates

dp, trees, two pointers

Kojiro and Furrari

dp, greedy

LCS Again

dp, greedy

Flights for Regular Customers

dp, matrices

Bulbo

dp, greedy

Bear and Cavalry

data structures, divide and conquer, dp

Minimization

dp, greedy, sortings

Pig and Palindromes

combinatorics, dp

Longest Increasing Subsequence

data structures, dp

Mausoleum

dp

Gerald and Path

dp, sortings

Gerald and Giant Chess

combinatorics, dp, math, number theory

Ann and Half-Palindrome

data structures, dp, graphs, string suffix structures, strings, trees

Kyoya and Train

dp, fft, graphs, math, probabilities

Vanya and Brackets

brute force, dp, expression parsing, greedy, implementation, strings

Mike and Foam

bitmasks, combinatorics, dp, math, number theory

Road Improvement

dp, trees

Remembering Strings

bitmasks, dp

Quest

dp, greedy

Superhero's Job

dfs and similar, dp, hashing, math, number theory

Demiurges Play Again

dfs and similar, dp, math, trees

Tavas in Kansas

dp, games

Simplified Nonogram

bitmasks, dp, hashing, meet-in-the-middle

Landmarks

data structures, dp

Work Group

dfs and similar, dp, graphs, strings, trees

Transmitting Levels

dp, implementation

Anya and Cubes

binary search, bitmasks, brute force, dp, math, meet-in-the-middle

Pluses everywhere

combinatorics, dp, math, number theory

A and B and Lecture Rooms

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

Pasha and Pipe

binary search, brute force, combinatorics, dp, implementation

Drazil and Morning Exercise

dfs and similar, dp, dsu, trees, two pointers

Darth Vader and Tree

dp, matrices

Inversions problem

dp

Inversions problem

dp, probabilities

Subarray Cuts

dp

Subarray Cuts

dp

Fox And Travelling

dp, trees

Progress Monitoring

dp, trees

Sums of Digits

dp, greedy, implementation

Arthur and Brackets

dp, greedy

Breaking Good

dfs and similar, dp, graphs, shortest paths

The Maths Lecture

dp, implementation

Mr. Kitayuta's Gift

combinatorics, dp, matrices, strings

New Year Shopping

divide and conquer, dp

New Year Domino

data structures, dp, dsu

Stairs and Lines

dp, matrices

Traffic Jams in the Land

data structures, dp, number theory

Name That Tune

dp, probabilities, two pointers

Subsequences Return

dp, matrices

Birthday

data structures, dfs and similar, dp, trees

Helping People

dp, probabilities

Obsessive String

dp, strings

Treeland Tour

data structures, dfs and similar, dp, trees

Special Matrices

combinatorics, dp

Hiking

binary search, dp

Strip

binary search, data structures, dp, two pointers

LIS of Sequence

data structures, dp, greedy, hashing, math

Valid Sets

dfs and similar, dp, math, trees

Kindergarten

data structures, dp, greedy

Random Function and Tree

combinatorics, dp, trees

Game with Strings

bitmasks, dp, probabilities