New Year Ratings Change

greedy, sortings

Preparing for the Contest

binary search, data structures, greedy, sortings

Inna and Nine

combinatorics, greedy

Inna and Pink Pony

greedy, implementation

Counting Kangaroos is Fun

binary search, greedy, sortings, two pointers

Subway Innovation

greedy, math, two pointers

K-Periodic Array

greedy, implementation, math

Summer Reading

dp, greedy

Broken Monitor

brute force, constructive algorithms, greedy, implementation

Mittens

constructive algorithms, greedy, sortings

Valera and Plates

greedy, implementation

Sereja and the Arrangement of Numbers

graphs, greedy, sortings

Free Market

dp, greedy

Renting Bikes

binary search, greedy

Fixing Typos

greedy, implementation

Fools and Foolproof Roads

data structures, dfs and similar, dsu, graphs, greedy

Two Semiknights Meet

greedy, math

Levko and Game

graphs, greedy, shortest paths

Levko and Array Recovery

greedy, implementation

Table

constructive algorithms, greedy, implementation

Dima and Hares

dp, greedy

Dima and Containers

constructive algorithms, greedy, implementation

Group of Students

brute force, greedy, implementation

Bags and Coins

bitmasks, constructive algorithms, dp, greedy

Compartments

combinatorics, constructive algorithms, greedy, implementation

Vasya and Public Transport

greedy, implementation

Vasya and Robot

brute force, greedy, math

Antichain

dp, graph matchings, greedy

Two Heaps

combinatorics, constructive algorithms, greedy, implementation, math, sortings

Jeff and Permutation

greedy

Jeff and Rounding

dp, greedy, implementation, math

Bombs

greedy, implementation, sortings

TL

brute force, greedy, implementation

Color the Fence

data structures, dp, greedy, implementation

Cinema Line

greedy, implementation

Number Transformation II

greedy, math

Pumping Stations

brute force, dfs and similar, divide and conquer, flows, graphs, greedy, trees

Read Time

binary search, greedy, two pointers

Alternating Current

data structures, greedy, implementation

Xenia and Spies

brute force, greedy, implementation

Xenia and Divisors

greedy, implementation

Candies Game

constructive algorithms, greedy

Three Swaps

constructive algorithms, dfs and similar, greedy

Xenia and Weights

constructive algorithms, dfs and similar, dp, graphs, greedy, shortest paths

Helpful Maths

greedy, implementation, sortings, strings

Quiz

binary search, greedy, math, matrices, number theory

Routine Problem

greedy, math, number theory

Puzzles

greedy

Vasily the Bear and Sequence

brute force, greedy, implementation, number theory

Buy One, Get One Free

dp, greedy

Banana

binary search, constructive algorithms, greedy

Chips

greedy

Secrets

greedy

Binary Key

dp, greedy, implementation

Students' Revenge

data structures, greedy, sortings

Purification

constructive algorithms, greedy

Sheldon and Ice Pieces

greedy

The Red Button

combinatorics, dfs and similar, dsu, graphs, greedy

Ciel and Dancing

greedy

Ciel and Flipboard

dp, greedy, math

Ciel the Commander

constructive algorithms, dfs and similar, divide and conquer, greedy, trees

Ciel and Duel

dp, flows, greedy

Magic Numbers

brute force, greedy

Have You Ever Heard About the Word?

greedy, hashing, string suffix structures, strings

Special Task

greedy

Ilya and Two Numbers

constructive algorithms, data structures, dsu, greedy

Ilya and Matrix

constructive algorithms, greedy, implementation, sortings

Sheep

binary search, greedy

Memory for Arrays

binary search, bitmasks, greedy

Optimizer

data structures, greedy, sortings

Ivan and Powers of Two

greedy, implementation

Sail

brute force, greedy, implementation

Snow Footprints

greedy, implementation

Fish Weight

constructive algorithms, greedy

Yaroslav and Permutations

greedy, math

Shaass and Bookshelf

dp, greedy

Weird Game

games, greedy

Parallel Programming

*special problem, greedy

Greedy Petya

*special problem, dfs and similar, graphs, greedy

Polo the Penguin and Strings

greedy

Main Sequence

greedy, implementation

Building Permutation

greedy, implementation, sortings

Slightly Decreasing Permutations

greedy, implementation

Painting Eggs

greedy, math

Beautiful Decomposition

dp, games, greedy, number theory

Little Girl and Maximum XOR

bitmasks, dp, greedy, implementation, math

Little Girl and Maximum Sum

data structures, greedy, implementation, sortings

Little Girl and Game

games, greedy

Lovely Matrix

dfs and similar, graphs, greedy, sortings

Zero Tree

dfs and similar, dp, greedy, trees

k-Multiple Free Set

binary search, greedy, sortings

Multithreading

data structures, greedy, implementation

Flawed Flow

constructive algorithms, flows, graphs, greedy

Magical Boxes

greedy, math

Below the Diagonal

constructive algorithms, greedy, math

Roadside Trees (Simplified Edition)

greedy, implementation

Squares

greedy, implementation, sortings

Roma and Changing Signs

greedy

Maxim and Discounts

greedy, sortings

Black and White Tree

constructive algorithms, dsu, graphs, greedy, trees