Christmas Chocolates

dfs and similar, dp, games, graphs, implementation, math, number theory, shortest paths, trees

Region Separation

combinatorics, dp, number theory, trees

Nested Rubber Bands

constructive algorithms, dfs and similar, dp, math, trees

Majority

combinatorics, dp, math, strings

Clusterization Counting

combinatorics, dp, dsu, fft, graphs, trees

Bags and Coins

bitmasks, constructive algorithms, dp, greedy

Good Contest

combinatorics, dp, probabilities

Sereja and Intervals

combinatorics, dp

Conveyor

constructive algorithms, dp, math

Cowmpany Cowmpensation

combinatorics, dp, math, trees

Flights for Regular Customers

dp, matrices

PermuTree (hard version)

bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees

Difficult Mountain

data structures, dp, greedy, sortings

Paint

dp, greedy

Escape Through Leaf

data structures, dp, geometry

Vowels

combinatorics, divide and conquer, dp

Composite Spells

*special problem, dp

Jumping Transformers

dp

Star Trek

*special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees

Power Defence

brute force, dp, geometry, greedy

Blue and Red of Our Faculty!

divide and conquer, dp

Doe Graphs

constructive algorithms, divide and conquer, dp, graphs, shortest paths

Formurosa

divide and conquer, dp, expression parsing

Meeting Her

dp, graphs, shortest paths

Heaps

dp, trees

Dima and Game

dp, games

Card Guessing

combinatorics, dp, probabilities

Ksenia and Combinatorics

combinatorics, dp

Simba on the Circle

dp

Unambiguous Arithmetic Expression

dp, expression parsing

Brand New Problem

bitmasks, brute force, dp

Dasha and Photos

brute force, data structures, dp, implementation

Maximum Waterfall

data structures, dp, graphs, sortings

Lostborn

dp, math, number theory

Broken Tree

dfs and similar, dp, graphs, greedy, trees

Gifts

combinatorics, dp, math, probabilities

Parcels

dp, graphs

Subarray Cuts

dp

Superhero's Job

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

Formalism for Formalism

bitmasks, dp, math

Keyboard Design

bitmasks, data structures, dp, string suffix structures, strings

Set

bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math

Maxim and Increasing Subsequence

dp

Triangles

combinatorics, dp

Good Pairs

binary search, data structures, dp

Piglet's Birthday

dp, math, probabilities

Mishka and Divisors

dp, number theory

Mission Impassable

dp, strings

Triangles

dp, geometry

Maximizing Root

dfs and similar, dp, graphs, math, number theory, trees

Sandy and Nuts

bitmasks, dp, trees

Pairs of Paths

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

Sequence of Balls

dp

Yet Another DAG Problem

bitmasks, dfs and similar, dp, flows, graphs, math

Fancy Arrays

combinatorics, dp, math, matrices

An unavoidable detour for home

combinatorics, dp, graphs, shortest paths

Swap and Take

dp, greedy

Beads

dp, graphs

Defining Macros

dp, expression parsing, implementation

Robot Control

dp, graphs, shortest paths

Labyrinth Adventures

data structures, dp, matrices, shortest paths

Count Voting

combinatorics, dp, math

Timber

combinatorics, dp, fft, math

Playlist for Polycarp (hard version)

combinatorics, dp

Vasya and Endless Credits

dp, flows, graph matchings, graphs, sortings

Find a car

combinatorics, divide and conquer, dp

Bingo

bitmasks, combinatorics, dp, math, probabilities

Number Challenge

combinatorics, dp, implementation, math, number theory

Strange Addition

data structures, dp, matrices

Serval and Bonus Problem

combinatorics, dp, math, probabilities

Conditional Mix

combinatorics, dp, math

Road Projects

dfs and similar, dp, trees

Counting Prefixes

combinatorics, constructive algorithms, dp, implementation, math

Autocompletion

data structures, dfs and similar, dp

Random Walk

dp, graphs, math, probabilities, trees

Preorder Test

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

Nauuo and Pictures (hard version)

dp, probabilities

Wise Men (Easy Version)

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

Balanced Domino Placements

combinatorics, dp

Helping People

dp, probabilities

Delivery Club

binary search, data structures, dp

Puzzle

constructive algorithms, dp, greedy

Strange LCS

bitmasks, dp, graphs, greedy, strings

Long Colorful Strip

dp

Realistic Gameplay

dp, greedy

New Year Garland

combinatorics, dp

Game with Strings

bitmasks, dp, probabilities

Sum the Fibonacci

bitmasks, divide and conquer, dp, fft, math

Doremy's Drying Plan (Hard Version)

data structures, dp

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

The Chocolate Spree

dfs and similar, dp, graphs, trees

Mercenaries

bitmasks, brute force, combinatorics, dp, dsu, math, two pointers

Destroy the Colony

combinatorics, dp, math

Points Movement

data structures, dp, greedy, implementation, sortings

Colouring Game

constructive algorithms, dp, games

Velepin and Marketing

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

Positions in Permutations

combinatorics, dp, math

Bicolored Segments

data structures, dp, graph matchings, sortings

Two Melodies

dp, flows

Mathematics Curriculum

brute force, combinatorics, dp, trees