Hossam and a Letter

brute force, dp, implementation, two pointers

Volcanoes

binary search, implementation, sortings, two pointers

Nene vs. Monsters (Hard Version)

brute force, greedy, implementation, math

Bracket Xoring

constructive algorithms, greedy, implementation, math

Ksenia and Pawns

dfs and similar, graphs, implementation, trees

Asterisks

*special problem, implementation

Tree Weights

bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees

Magician and Pigs (Hard Version)

binary search, brute force, data structures, implementation

Digits of Number Pi

dp, implementation, strings

Uniform String

*special problem, implementation

Inverse Transformation

constructive algorithms, implementation, math

Cook and Porridge

binary search, constructive algorithms, data structures, implementation

Finals in arithmetic

constructive algorithms, implementation, math

Knitting Batik

implementation, math

Refactoring

greedy, implementation, strings

Downloading B++

binary search, implementation

Broken Monitor

brute force, constructive algorithms, greedy, implementation

Chip Play

brute force, data structures, implementation

Harvester

implementation

Team Arrangement

constructive algorithms, greedy, implementation

Solitaire

brute force, implementation

How Many Squares?

implementation

Equal Reversal

constructive algorithms, graphs, implementation, math

Vanya and Balloons

binary search, brute force, dp, implementation

Strange Sorting

implementation, math

Poisonous Swamp

*special problem, *special problem, implementation, implementation

Наибольший подъем

constructive algorithms, implementation

Automatic Door

implementation

Fibonacci-ish II

data structures, implementation

Project Manager

brute force, data structures, implementation

Collisions

brute force, implementation, math

Maze 1D

binary search, greedy, implementation

Game

implementation

Farmer John's Favorite Function

brute force, data structures, implementation, math

Cute number

binary search, brute force, data structures, dsu, implementation, math

Vus the Cossack and a Field

divide and conquer, implementation, math

Not Splitting

geometry, graphs, greedy, implementation, shortest paths

Colored Cubes

constructive algorithms, implementation, matrices

Are You Safe?

*special problem, implementation

Friendly Numbers

*special problem, implementation

Strange Instructions

data structures, greedy, implementation

Sereja and Tree

graphs, implementation

Colour Vision

*special problem, implementation

Printer

binary search, data structures, implementation, sortings

Defragmentation

implementation

Colorado Potato Beetle

dfs and similar, implementation

Game of Stacks

brute force, dfs and similar, graphs, implementation, trees

Serval and Brain Power

bitmasks, brute force, dp, greedy, implementation, strings

MEX counting

combinatorics, dp, implementation

Gnikool Ssalg

*special problem, implementation, strings

Number of Components

dsu, implementation

A+B

*special problem, implementation

Too Many Constraints

2-sat, constructive algorithms, graphs, implementation

Madoka and The First Session

constructive algorithms, flows, graph matchings, graphs, implementation

Widget Library

dp, expression parsing, graphs, implementation

Mirror Box

geometry, implementation

Raging Thunder

data structures, divide and conquer, implementation

Tests Renumeration

greedy, implementation

Rats

brute force, dfs and similar, graphs, implementation, shortest paths

Two Paths

constructive algorithms, dsu, graphs, implementation

HQ9+

*special problem, implementation

Double Elimination

dp, implementation

Dormitory

dp, implementation

Crosses

brute force, implementation

Vasya the Architect

implementation

Kay and Eternity

brute force, implementation, sortings

Sweets for Everyone!

binary search, greedy, implementation

Information Reform

dp, implementation, trees

Chips Puzzle

constructive algorithms, implementation, math

Rain of Fire

binary search, data structures, dfs and similar, dsu, graphs, implementation

New Year and Finding Roots

constructive algorithms, implementation, interactive, trees

Piet

implementation

Plane Tiling

geometry, implementation, math

Cyclic Cipher

chinese remainder theorem, data structures, implementation, number theory, two pointers

Sweets

*special problem, data structures, implementation

Black Widow

dp, graphs, implementation, math

Goofy Numbers

*special problem, implementation

Interactive Factorial Guessing

brute force, games, implementation, interactive

New Year and Cleaning

binary search, implementation

Tricky Interactor

constructive algorithms, implementation, interactive

Game

games, implementation

String Distance

binary search, brute force, data structures, hashing, implementation, strings

Tasty Cookie

binary search, constructive algorithms, greedy, implementation

LCM

*special problem, implementation, math

Strange Radiation

binary search, implementation, math

Touchy-Feely Palindromes

*special problem, implementation

The Cells on the Paper

binary search, implementation, sortings

One Node is Gone

constructive algorithms, implementation, trees

Decoding of Integer Sequences

*special problem, data structures, implementation

Geometrical problem

implementation

Sherlock's bet to Moriarty

constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation, trees

Get Ready for the Battle

constructive algorithms, implementation

Game with Points

dp, graphs, implementation, shortest paths

Azembler

brute force, implementation

Weighed Tree Radius

data structures, divide and conquer, implementation, trees

Cartoons

*special problem, implementation, sortings

Keen Tree Calculation

binary search, data structures, dp, geometry, graphs, implementation, trees

Qingshan and Daniel

brute force, data structures, greedy, implementation

Once in a casino

constructive algorithms, greedy, implementation, math

Dasha and Photos

brute force, data structures, dp, implementation