Lanterns

binary search, data structures, dp

Treeland and Viruses

data structures, dfs and similar, dp, shortest paths, trees

Vladislav and a Great Legend

combinatorics, dp, trees

Abandoning Roads

brute force, dp, graphs, greedy

ZS Shuffles Cards

combinatorics, dp, math, probabilities

Quick Tortoise

bitmasks, divide and conquer, dp

Mr. Kitayuta's Gift

combinatorics, dp, matrices, strings

Make It Ascending

bitmasks, brute force, dp

Keep XOR Low

bitmasks, combinatorics, data structures, divide and conquer, dp, math

Gerald and Path

dp, sortings

Gosha is hunting

brute force, data structures, dp, flows, math, probabilities, sortings

Pac-Man 2.0

*special problem, dp

Viruses

*special problem, dp, shortest paths, string suffix structures

Hellish Constraints

brute force, dp, two pointers

Cactus to Tree

dp, graphs, trees

Problem of offices

constructive algorithms, dfs and similar, dp, trees

Strange Function

dp

Subsequences Return

dp, matrices

Jzzhu and Squares

dp, math, number theory

PalindORme

combinatorics, dp

Wrap Around

dp, strings

Sherlock and the Encrypted Data

bitmasks, combinatorics, dp

Ones

dp, greedy, shortest paths

Sereja and Squares

dp

Shake It!

combinatorics, dp, flows, graphs

Anti-Increasing Addicts

constructive algorithms, dp, greedy, math

Graph Coloring (hard version)

brute force, combinatorics, divide and conquer, dp, fft, graphs

Pollywog

combinatorics, dp, matrices

Andrew and Chemistry

dp, hashing, trees

Forbidden Value

data structures, dp

Cakes for Clones

dp

Coins Exhibition

data structures, dp, math

Converging Array (Hard Version)

dp, math

Transferring Pyramid

dp

Omkar and Pies

bitmasks, dfs and similar, dp, math, shortest paths

Electric Charges

binary search, dp

Black Widow

dp, graphs, implementation, math

Phys Ed Online

data structures, dp, greedy

Satanic Panic

dp, geometry

List Generation

combinatorics, dp, math

Tree Elimination

dp, trees

Mashtali and Hagh Trees

combinatorics, dp, trees

Beautiful Matrix

combinatorics, data structures, dp

Lost Array

bitmasks, combinatorics, constructive algorithms, dp, math

Graph And Numbers

bitmasks, brute force, combinatorics, dp, meet-in-the-middle

Ciel and Flipboard

dp, greedy, math

Rectangular Polyline

constructive algorithms, dp, geometry

Shrinking Tree

combinatorics, dp

Lucky Numbers (Easy Version)

dp, greedy

Edge Elimination

constructive algorithms, dfs and similar, dp, trees

Bears and Juice

dp, math, meet-in-the-middle

Tavas in Kansas

dp, games

Hitchhiking in the Baltic States

data structures, dp

Subsequence

brute force, divide and conquer, dp, greedy, trees

Wonderful Jump

dp, greedy

Research Rover

combinatorics, dp

Palindrome Partition

dp, string suffix structures, strings

Fox And Travelling

dp, trees

Isolation

data structures, dp

Omkar and Last Floor

dp, greedy, two pointers

Bandit Blues

combinatorics, dp, fft, math

Roads in Yusland

data structures, dp, greedy

Goods transportation

dp, flows, greedy

BubbleReactor

dp, graphs

Kojiro and Furrari

dp, greedy

Counting Skyscrapers

dp, math, probabilities

Jackets and Packets

dp

Future Failure

dp, games

Polo the Penguin and Lucky Numbers

dp, implementation, math

Pudding Monsters

dp

Goblins And Gnomes

brute force, dp, flows, graph matchings

Game of Questions

bitmasks, combinatorics, dp, fft, math, probabilities

Google Code Jam

dp, probabilities

Forward, march!

binary search, dp, greedy

Swimmers in the Pool

dp, fft, math, number theory

Yaroslav and Arrangements

dp

Twilight and Ancient Scroll (easier version)

dp, hashing, implementation, string suffix structures, strings

Tournament Construction

constructive algorithms, dp, graphs, greedy, math

Bessie and Cards

combinatorics, dp, math

Directing Edges

dfs and similar, dp, graphs, trees

Tiles

combinatorics, dp, fft, math

Inverse Genealogy

constructive algorithms, divide and conquer, dp, math, trees

Delivery Oligopoly

brute force, dp, graphs

Maxim and Calculator

brute force, dp, two pointers

Letters and Question Marks

bitmasks, dp, string suffix structures

Speed Dial

dp, strings, trees

Location

data structures, dp, math, number theory

Prediction

combinatorics, dp, math

String and Operations

dp, greedy

Minibuses on Venus (hard version)

brute force, combinatorics, dp, math

Random Forest Rank

dp, graph matchings, math, trees

Pilgrims

dfs and similar, dp, trees

Miriany and Matchstick

constructive algorithms, dp, greedy

Cookie Clicker

dp, geometry

Two Subsequences

bitmasks, dp

Au Pont Rouge

binary search, dp, strings

Foreigner

dp

Neko Rules the Catniverse (Small Version)

bitmasks, dp, matrices

Tree Queries

brute force, dp, trees

Caterpillar

dfs and similar, dp, graphs, trees