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

Read Time

binary search, greedy, two pointers

Strings of Power

implementation, strings, two pointers

Sereja and Straight Lines

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

Context Advertising

dp, two pointers

Morning run

binary search, math, two pointers

Eugeny and Play List

binary search, implementation, two pointers

Ksusha and Square

geometry, math, probabilities, two pointers

Nearest Fraction

brute force, implementation, two pointers

Maximum Xor Secondary

data structures, implementation, two pointers

Ladder

dp, implementation, two pointers

Books

binary search, brute force, implementation, two pointers

Colorful Stones

dp, two pointers

Escape from Stones

constructive algorithms, data structures, implementation, two pointers

Maxim and Calculator

brute force, dp, two pointers

Table with Letters - 2

brute force, two pointers

Physics Practical

binary search, dp, sortings, two pointers

Points on Line

binary search, combinatorics, two pointers

Building Bridge

geometry, ternary search, two pointers

Cubes

data structures, dp, geometry, two pointers

Primes on Interval

binary search, number theory, two pointers

To Add or Not to Add

binary search, sortings, two pointers

Towers

dp, greedy, two pointers

Shifts

brute force, two pointers

Array

bitmasks, implementation, two pointers

Olympiad

binary search, greedy, sortings, two pointers

Little Elephant and Inversions

data structures, two pointers

Spider's Web

binary search, sortings, two pointers

Little Elephant and Strings

data structures, implementation, string suffix structures, two pointers

Transportation

greedy, sortings, two pointers

Non-Secret Cypher

two pointers

Cubes

binary search, dp, two pointers

Geometry Horse

greedy, implementation, sortings, two pointers

Shoe Store

dp, graph matchings, greedy, sortings, two pointers

Another Problem on Strings

binary search, brute force, dp, math, strings, two pointers

Ancient Berland Hieroglyphs

two pointers

Conveyor

sortings, two pointers

Dress'em in Vests!

binary search, brute force, greedy, two pointers

Hellish Constraints

brute force, dp, two pointers

Present to Mom

binary search, two pointers

Lucky Segments

binary search, implementation, two pointers

Powerful array

data structures, implementation, math, two pointers

Beaver

data structures, dp, greedy, hashing, strings, two pointers

Archer's Shot

binary search, geometry, math, two pointers

Mice

greedy, two pointers

Lucky Tickets

binary search, data structures, sortings, two pointers