Inna and Binary Logic

binary search, bitmasks, data structures

Dima and Bacteria

dsu, graphs, shortest paths

Inna and Huge Candy Matrix

implementation, math

Inna and New Matrix of Candies

brute force, implementation

Inna and Choose Options

implementation

Red and Blue Balls

Pages

Sorting Permutations

Instant Messanger

data structures

Tree and Array

Painting The Wall

dp, probabilities

Cards

implementation

On Corruption and Numbers

On Segment's Own Points

On Iteration of One Well-Known Function

On Sum of Number of Inversions in Permutations

combinatorics, probabilities

On Changing Tree

data structures, trees

On Sum of Fractions

math, number theory

On Number of Decompositions into Multipliers

Lightbulb for Minister

geometry

Physical Education and Buns

brute force, implementation, math

Dominoes

constructive algorithms, greedy

Very Beautiful Number

Counting Sticks

implementation

Three matrices

Nineteen

Deleting Substrings

Three Arrays

data structures

Yet Another Number Sequence

Tower of Hanoi

dp

Blocked Points

Stock Trading

Stock Trading

Stock Trading

Three Trees

Three Trees

Supercollider

Supercollider

The Tournament

The Tournament

The Tournament

Word Folding

Genetic Engineering

Inna and Large Sweet Matrix

Inna and Sweet Matrix

Inna and Candy Boxes

Inna, Dima and Song

implementation

Inna and Alarm Clock

implementation

Fox and Cross

greedy, implementation

Fox and Number Game

greedy, math

Fox and Meteor Shower

geometry

Fox and Perfect Sets

math

Fox and Card Game

games, greedy, sortings

Fox and Minimal path

bitmasks, constructive algorithms, graphs, implementation, math

Fox and Box Accumulation

binary search, brute force, greedy, sortings

George and Cards

binary search, data structures

George and Interesting Graph

graph matchings

George and Number

greedy, implementation

George and Round

brute force, greedy, two pointers

George and Sleep

implementation, math

Game with Points

dp, graphs, implementation, shortest paths

Diverse Substrings

two pointers

Fly, freebies, fly!

binary search, brute force, implementation

Second-Price Auction

implementation

Bear in the Field

math, matrices

Bear and Floodlight

bitmasks, dp, geometry

Bear and Prime Numbers

binary search, brute force, data structures, dp, implementation, math, number theory

Bear and Strings

brute force, greedy, implementation, math, strings

Bear and Raspberry

brute force, greedy, implementation

Multitasking

greedy, implementation, sortings, two pointers

Coder

implementation

Vowels

combinatorics, divide and conquer, dp

Antimatter

divide and conquer, dp

Propagating tree

data structures, trees

Volcanoes

binary search, sortings, two pointers

Milking cows

data structures, greedy

Ksenia and Combinatorics

combinatorics, dp

Ksenia and Pawns

dfs and similar, graphs, implementation, trees

Arithmetic Progression

implementation, sortings

Number Busters

binary search, math

Ksenia and Pan Scales

greedy, implementation

Sereja and Stairs

greedy, implementation, sortings

Sereja and Dima

greedy, implementation

Sereja and Dividing

data structures

Sereja and Cinema

combinatorics, math

Sereja and Brackets

data structures

Sereja and Tree

graphs, implementation

Sereja and Prefixes

binary search, brute force

New Year Cactus

dp

New Year Tree

data structures, divide and conquer, trees

New Year Tree Decorations

geometry, sortings

New Year Letter

bitmasks, brute force, dp

New Year Ratings Change

greedy, sortings

New Year Present

constructive algorithms, implementation

New Year Candles

implementation

Semifinals

implementation, sortings

Playing with Dice

brute force

Cookie Clicker

dp, geometry

Developing Game

data structures

Captains Mode

bitmasks, dp, games, greedy