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

Berland Local Positioning System

constructive algorithms, greedy, hashing, implementation

Handshakes

binary search, constructive algorithms, data structures, greedy

Polycarpus' Dice

math

Covered Path

dp, greedy, math

Exam

constructive algorithms, implementation, math

Encoding

hashing, string suffix structures, strings

Correcting Mistakes

constructive algorithms, dp, greedy, hashing, strings, two pointers

Landmarks

data structures, dp

Board Game

games, greedy, implementation, math

Work Group

dfs and similar, dp, graphs, strings, trees

Berland Miners

binary search, data structures, dfs and similar, greedy, trees

Different variables

*special problem

Points in triangle

*special problem, geometry

Levenshtein distance

*special problem

Jumping frogs

*special problem

Sum and product

*special problem

Set subtraction

*special problem

Diophantine equation

*special problem

String inside out

*special problem

Quadratic equation

*special problem

Group Photo 2 (online mirror version)

brute force, greedy, sortings

Triangles 3000

geometry, sortings

Fuzzy Search

bitmasks, brute force, fft

Data Center Drama

dfs and similar, graphs

Clique Problem

data structures, dp, greedy, implementation, sortings

Glass Carving

binary search, data structures, implementation

Error Correct System

greedy

Playing with Paper

implementation, math

Spiders Evil Plan

greedy, trees

Pudding Monsters

data structures, divide and conquer

Transmitting Levels

dp, implementation

Om Nom and Necklace

hashing, string suffix structures, strings

Om Nom and Candies

brute force, greedy, math

Om Nom and Dark Park

dfs and similar, greedy, implementation

King of Thieves

brute force, implementation

Anya and Cubes

binary search, bitmasks, brute force, dp, math, meet-in-the-middle

Arthur and Walls

constructive algorithms, data structures, graphs, greedy, shortest paths

Ilya and Sticks

greedy, math, sortings

Pasha and String

constructive algorithms, greedy, math, strings

Vitaliy and Pie

greedy, hashing, strings

And Yet Another Bracket Sequence

data structures, greedy, hashing, string suffix structures, strings

Rooks and Rectangles

data structures, sortings

Social Network

greedy, two pointers

The Art of Dealing with ATM

binary search, sortings

Фото на память - 2 (round version)

dp, greedy

Возможно, вы знаете этих людей?

implementation

Statistics of Recompressing Videos

*special problem, data structures, implementation

Name Quest

*special problem, greedy

Mean Requests

*special problem, implementation

Rotate, Flip and Zoom

*special problem, implementation

Closest Equals

*special problem, data structures

Chicken or Fish?

greedy

Photo to Remember

*special problem, data structures, dp, implementation

Reposts

*special problem, dfs and similar, dp, graphs, trees

Cycling City

dfs and similar, graphs

Shop

greedy

Pluses everywhere

combinatorics, dp, math, number theory

Cubes

games, greedy, implementation

DNA Alignment

math, strings

Two Buttons

dfs and similar, graphs, greedy, implementation, math, shortest paths

Pangram

implementation, strings

A and B and Lecture Rooms

binary search, data structures, dfs and similar, dp, trees

A and B and Interesting Substrings

data structures, dp, two pointers

A and B and Team Training

greedy, implementation, math, number theory

A and B and Compilation Errors

data structures, implementation, sortings

A and B and Chess

implementation

Pasha and Pipe

binary search, brute force, combinatorics, dp, implementation

Arthur and Questions

greedy, implementation, math, ternary search

Ilya and Escalator

combinatorics, dp, math, probabilities

Anya and Smartphone

constructive algorithms, data structures, implementation

Tanya and Postcard

greedy, implementation, strings

Vitaly and Strings

constructive algorithms, strings

Drazil and His Happy Friends

math, number theory

Drazil and Morning Exercise

dfs and similar, dp, dsu, trees, two pointers

Drazil and Park

data structures

Drazil and Tiles

constructive algorithms, greedy