Ksenia and Combinatorics

combinatorics, dp

Shake It!

combinatorics, dp, flows, graphs

The Great Julya Calendar

dp

Sereja and Squares

dp

Arrangement

bitmasks, dp

Dima and Game

dp, games

Ones

dp, greedy, shortest paths

Banners

brute force, data structures, dp

Yaroslav and Arrangements

dp

Journey

dp, trees

New Year Permutations

combinatorics, dp

Computer Game

dp, greedy, math, probabilities

Swimmers in the Pool

dp, fft, math, number theory

Making Shapes

dp

Heaps

dp, trees

Parmigiana With Seafood

binary search, dp, greedy, trees

Stepan's Series

*special problem, dp

Pasha and Pipe

binary search, brute force, combinatorics, dp, implementation

Twilight and Ancient Scroll (harder version)

dp, hashing, implementation, string suffix structures, strings, two pointers

Packmen Strike Back

binary search, dp, math

Expression

dp

Shoe Store

dp, graph matchings, greedy, sortings, two pointers

Forward, march!

binary search, dp, greedy

INOI Final Contests

combinatorics, dp, fft

Sonya Partymaker

binary search, dp

Meeting Her

dp, graphs, shortest paths

Min-Fund Prison (Medium)

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

Anagram Paths

dp, implementation, trees

Flags

dp, math, matrices

Breadboard Capacity (easy version)

dp, flows, greedy

Sherlock and the Encrypted Data

bitmasks, combinatorics, dp

Cupboards Jumps

dp

Journey

dp, math

Bosco and Particle

dp, math, number theory, strings

Google Code Jam

dp, probabilities

Pairs

dfs and similar, dp, dsu, graphs, implementation, trees

Fix the String

*special problem, bitmasks, dp, greedy

Find String in a Grid

data structures, dp, strings, trees

World of Tank

dp, greedy

Replace All

combinatorics, dp, math

Cubeword

*special problem, brute force, dp, meet-in-the-middle

Convex Countour

dp

Game of Questions

bitmasks, combinatorics, dp, fft, math, probabilities

Goblins And Gnomes

brute force, dp, flows, graph matchings

Pudding Monsters

dp

Permutation Counting

brute force, combinatorics, dp, fft, math

Representative Sampling

dp, sortings, strings

Random Ranking

dp, math, probabilities

Formurosa

divide and conquer, dp, expression parsing

Domino Carpet

dp, implementation

Permanent

dp, graph matchings, math, meet-in-the-middle

Nora's Toy Boxes

bitmasks, combinatorics, dp

Rectangles and Square

brute force, dp

Infinite Game

brute force, combinatorics, dp, games, probabilities

Hyper String

dp

Selling Numbers

dp, sortings

Road to Home

binary search, dp

Wrap Around

dp, strings

Binary Key

dp, greedy, implementation

Strange Permutation

binary search, combinatorics, data structures, dp, graphs, implementation, two pointers

PalindORme

combinatorics, dp

European Trip

dp, graphs, math, matrices

Plane of Tanks: Duel

brute force, dp, math, probabilities

Polo the Penguin and Lucky Numbers

dp, implementation, math

Send the Fool Further! (hard)

dfs and similar, dp, math, trees

Jzzhu and Squares

dp, math, number theory

Squares

constructive algorithms, data structures, dp, graphs, trees

Subsequences Return

dp, matrices

Doe Graphs

constructive algorithms, divide and conquer, dp, graphs, shortest paths

Polygon

binary search, dp, geometry

Future Failure

dp, games

Elevators of Tamem

dp

Split

binary search, data structures, dp, greedy

Modest Substrings

dp, strings

Jellyfish and Hack

dp, math

Blue and Red of Our Faculty!

divide and conquer, dp

Perpetual Motion Machine

constructive algorithms, dp, graphs, implementation, math, trees

Tree Cutting

bitmasks, dfs and similar, dp

Jackets and Packets

dp

Asterism Stream

dp, math, matrices

Mutation

bitmasks, dp, math

XOR-ranges

dp, greedy

Strange Function

dp

October 18, 2017

combinatorics, dp, implementation, math

School

dp, dsu

Just Add an Edge

dfs and similar, dp, graphs

K Paths

combinatorics, data structures, dp, fft, math

The Great Marathon

dp

Finding satisfactory solutions

combinatorics, dp, graphs, greedy, math

Power Defence

brute force, dp, geometry, greedy

Liars and Serge

dp

Ball-Stackable

constructive algorithms, data structures, dp, trees

Galaxy Union

dp, trees, two pointers

Prefix Max Set Counting

data structures, dp, trees

Zombies

binary search, dp

Inversions problem

dp

Secret Letters

data structures, dp, greedy

Antifibonacci Cut

bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math

1 2 3 4 ...

dp, math, matrices

Problem of offices

constructive algorithms, dfs and similar, dp, trees