Equivalent Strings

divide and conquer, hashing, sortings, strings

Gerald's Hexagon

brute force, geometry, math

A Simple Task

data structures, sortings, strings

Guess Your Way Out! II

data structures, implementation, sortings

Amr and Chemistry

brute force, graphs, greedy, math, shortest paths

Amr and The Large Array

implementation

Lala Land and Apple Trees

brute force, implementation, sortings

Ann and Half-Palindrome

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

Vitaly and Cycle

combinatorics, dfs and similar, graphs, math

Arthur and Table

brute force, data structures, dp, greedy, math, sortings

Pasha and Tea

constructive algorithms, implementation, math, sortings

Ilya and Diplomas

greedy, implementation, math

Case of Fake Numbers

brute force, implementation

Case of the Zeros and Ones

greedy

Case of Computer Network

dfs and similar, graphs, trees

Case of a Top Secret

binary search, implementation, math

Case of Chocolate

data structures

Case of Fugitive

data structures, greedy, sortings

Case of Matryoshkas

implementation

Ohana Cleans Up

brute force, greedy, strings

Kyoya and Photobooks

brute force, math, strings

Kyoya and Train

dp, fft, graphs, math, probabilities

Nudist Beach

binary search, graphs, greedy

Love Triangles

dfs and similar, dsu, graphs

Kyoya and Permutation

binary search, combinatorics, constructive algorithms, greedy, implementation, math

Kyoya and Colored Balls

combinatorics, dp, math

Vanya and Brackets

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

Vanya and Triangles

brute force, combinatorics, data structures, geometry, math, sortings

Vanya and Scales

brute force, dp, greedy, math, meet-in-the-middle, number theory

Vanya and Books

implementation, math

Vanya and Table

implementation, math

GukiZ and GukiZiana

binary search, data structures, implementation

GukiZ and Binary Operations

combinatorics, implementation, math, matrices, number theory

GukiZ hates Boxes

binary search, greedy

ZgukistringZ

brute force, constructive algorithms, implementation, strings

GukiZ and Contest

brute force, implementation, sortings

Brackets in Implications

constructive algorithms, greedy, implementation, math

Regular Bridge

constructive algorithms, graphs, implementation

Divisibility by Eight

brute force, dp, math

Preparing Olympiad

bitmasks, brute force

Two Substrings

brute force, dp, greedy, implementation, strings

Degenerate Matrix

binary search, math

Happy Line

constructive algorithms, greedy, sortings

Yura and Developers

data structures, divide and conquer

Sasha Circle

geometry, math

Haar Features

greedy, implementation

The Game Of Parity

games

Looksery Party

constructive algorithms, dfs and similar, graphs, greedy

Face Detection

implementation, strings

Mike and Fun

brute force, dp, greedy, implementation

Mike and Fax

brute force, implementation, strings

Mike and Friends

data structures, string suffix structures, strings, trees

Mike and Fish

constructive algorithms, dfs and similar, graphs

Mike and Foam

bitmasks, combinatorics, dp, math, number theory

Mike and Feet

binary search, data structures, dp, dsu

Mike and Frog

brute force, greedy, implementation, math

Soldier and Traveling

flows, graphs, math

Soldier and Number Game

constructive algorithms, dp, math, number theory

Soldier and Cards

brute force, dfs and similar, games

Soldier and Badges

brute force, greedy, implementation, sortings

Soldier and Bananas

brute force, implementation, math

Paths and Trees

graphs, greedy, shortest paths

Queue

greedy, implementation, sortings

Woodcutters

dp, greedy

Equidistant String

greedy

Toy Cars

implementation

Sea and Islands

constructive algorithms, implementation

Set of Strings

implementation, strings

Listening to Music

constructive algorithms, data structures

Road Improvement

dp, trees

Remembering Strings

bitmasks, dp

Destroying Roads

constructive algorithms, graphs, shortest paths

Writing Code

dp

Quest

dp, greedy

Playing on Graph

graphs, shortest paths

Superhero's Job

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

Idempotent functions

constructive algorithms, graphs, math

Duck Hunt

data structures

Place Your Ad Here

data structures, sortings

Infinite Inversions

binary search, data structures, implementation, sortings, trees

Bad Luck Island

dp, probabilities

Ice Cave

dfs and similar

School Marks

greedy, implementation

Combination Lock

implementation

Summer Dichotomy

2-sat, data structures, dfs and similar, greedy

Berserk Robot

constructive algorithms, math, sortings

A Heap of Heaps

brute force, data structures, math, sortings

Demiurges Play Again

dfs and similar, dp, math, trees

Weird Chess

brute force, constructive algorithms, implementation

Tourist's Notes

binary search, brute force, greedy, implementation, math

Quasi Binary

constructive algorithms, dp, greedy, implementation

Cutting Banner

brute force, implementation

Tavas on the Path

data structures, divide and conquer, trees

Tavas in Kansas

dp, games

Tavas and Pashmaks

geometry, math

Tavas and Malekas

greedy, hashing, string suffix structures, strings

Tavas and Karafs

binary search, greedy, math

Tavas and SaDDas

bitmasks, brute force, combinatorics, implementation

Tavas and Nafas

brute force, implementation

Simplified Nonogram

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