Three-level Laser

binary search, greedy, two pointers

Swap Adjacent Elements

dfs and similar, greedy, math, sortings, two pointers

Prime Gift

binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers

Bipartite Segments

binary search, data structures, dfs and similar, dsu, graphs, two pointers

Segments Removal

data structures, dsu, flows, implementation, two pointers

XK Segments

binary search, math, sortings, two pointers

Wrath

greedy, implementation, two pointers

K-Dominant Character

binary search, implementation, two pointers

Ratings and Reality Shows

data structures, two pointers

Sorting the Coins

dsu, implementation, sortings, two pointers

Strange Game On Matrix

greedy, two pointers

Jury Meeting

greedy, sortings, two pointers

Rooter's Song

constructive algorithms, data structures, geometry, implementation, sortings, two pointers

Random Query

data structures, math, probabilities, two pointers

Kirill And The Game

brute force, two pointers

The Bakery

binary search, data structures, divide and conquer, dp, two pointers

Bamboo Partition

brute force, data structures, implementation, math, number theory, sortings, two pointers

Card Game Again

binary search, data structures, number theory, two pointers

An impassioned circulation of affection

brute force, dp, strings, two pointers

Aquarium decoration

data structures, greedy, two pointers

Functions again

dp, two pointers

Intranet of Buses

binary search, geometry, implementation, two pointers

Alyona and Spreadsheet

binary search, data structures, dp, greedy, implementation, two pointers

Significant Cups

*special problem, binary search, data structures, two pointers

Bear and Isomorphic Points

geometry, two pointers

News About Credit

*special problem, greedy, two pointers

Cartons of milk

binary search, data structures, greedy, sortings, two pointers

Two strings

binary search, hashing, strings, two pointers

USB vs. PS/2

greedy, implementation, sortings, two pointers

Voting

greedy, implementation, two pointers

Santa Claus and Tangerines

binary search, data structures, greedy, two pointers

Music in Car

data structures, greedy, two pointers

Hongcow Masters the Cyclic Shift

strings, two pointers

Anton and Making Potions

binary search, dp, greedy, two pointers

Sleep in Class

constructive algorithms, data structures, math, two pointers

Epidemic in Monstropolis

constructive algorithms, dp, greedy, two pointers

Cyclic Cipher

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

Complete the Word

greedy, two pointers

Cellular Network

binary search, implementation, two pointers

They Are Everywhere

binary search, strings, two pointers

...Dary!

binary search, geometry, two pointers

Alyona and Triangles

geometry, two pointers

Vasya and String

binary search, dp, strings, two pointers

Four Divisors

data structures, dp, math, number theory, sortings, two pointers

Hard Process

binary search, dp, two pointers

Foe Pairs

combinatorics, sortings, two pointers

Image Preview

binary search, brute force, dp, two pointers

Enduring Exodus

binary search, two pointers

Processing Queries

*special problem, constructive algorithms, data structures, two pointers

Bear and Contribution

data structures, greedy, sortings, two pointers

Startup Funding

binary search, constructive algorithms, data structures, probabilities, two pointers

Orchestra

two pointers

Professor GukiZ and Two Arrays

binary search, two pointers

Double Knapsack

constructive algorithms, two pointers

Longest k-Good Segment

binary search, data structures, two pointers

Skills

binary search, brute force, dp, greedy, sortings, two pointers

New Year and Cake

geometry, two pointers

Vika and Segments

constructive algorithms, data structures, geometry, two pointers

Gadgets for dollars and pounds

binary search, greedy, two pointers

Approximating a Constant Range

dp, implementation, two pointers

Queries about less or equal elements

binary search, data structures, sortings, two pointers

Edo and Magnets

brute force, greedy, implementation, two pointers

BCPC

binary search, geometry, two pointers

Zublicanes and Mumocrates

dp, trees, two pointers

Kefa and Company

binary search, sortings, two pointers

Modulo Sum

combinatorics, data structures, dp, two pointers

Correcting Mistakes

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

Social Network

greedy, two pointers

A and B and Interesting Substrings

data structures, dp, two pointers

Drazil and Morning Exercise

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

R2D2 and Droid Army

binary search, data structures, two pointers

Mr. Kitayuta, the Treasure Hunter

dfs and similar, dp, two pointers

Name That Tune

dp, probabilities, two pointers

Vasya and Basketball

binary search, brute force, data structures, implementation, sortings, two pointers

BerSU Ball

dfs and similar, dp, graph matchings, greedy, sortings, two pointers

Strip

binary search, data structures, dp, two pointers

Maximum Value

binary search, math, sortings, two pointers

Number of Ways

binary search, brute force, data structures, dp, two pointers

DZY Loves Sequences

dp, implementation, two pointers

DZY Loves Strings

binary search, hashing, strings, two pointers

Devu and his Brother

binary search, sortings, ternary search, two pointers

Prefixes and Suffixes

dp, string suffix structures, strings, two pointers

Balls Game

brute force, two pointers

Checkposts

dfs and similar, graphs, two pointers

Bug in Code

data structures, graphs, implementation, two pointers

Guess a number!

greedy, implementation, two pointers

Mashmokh and Water Tanks

binary search, data structures, greedy, trees, two pointers

Hamming Triples

implementation, math, two pointers

Genetic Engineering

implementation, two pointers

George and Round

brute force, greedy, two pointers

Diverse Substrings

dp, strings, two pointers

Multitasking

greedy, implementation, sortings, two pointers

Volcanoes

binary search, implementation, sortings, two pointers

Sereja and Dima

greedy, implementation, two pointers

Choosing Subtree is Fun

binary search, data structures, dfs and similar, trees, two pointers

Counting Kangaroos is Fun

binary search, greedy, sortings, two pointers

Subway Innovation

greedy, math, two pointers

Dima and Trap Graph

binary search, data structures, dfs and similar, dsu, shortest paths, two pointers

Empty Rectangles

divide and conquer, two pointers

Pair of Numbers

binary search, brute force, data structures, math, two pointers