Caramel Clouds

data structures, dp, sortings

Bamboo Partition

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

Cards Sorting

data structures, implementation, sortings

Office Keys

binary search, brute force, dp, greedy, sortings

String Reconstruction

data structures, greedy, sortings, strings

Hacker, pack your bags!

binary search, greedy, implementation, sortings

Imbalanced Array

data structures, divide and conquer, dsu, sortings

Makes And The Product

combinatorics, implementation, math, sortings

An abandoned sentiment from past

constructive algorithms, greedy, implementation, sortings

Sagheer and Nubian Market

binary search, sortings

Vladik and Complicated Book

implementation, sortings

Summer sell-off

greedy, sortings

Do you want a date?

implementation, math, sortings

Tea Party

constructive algorithms, greedy, sortings

Is it rated?

implementation, sortings

Expected diameter of a tree

binary search, brute force, dfs and similar, dp, sortings, trees

April Fools' Problem (easy)

greedy, sortings

Mike and code of a permutation

constructive algorithms, data structures, graphs, sortings

Mike and distribution

constructive algorithms, sortings

Mice and Holes

data structures, dp, greedy, sortings

Naming Company

games, greedy, sortings

Mice problem

geometry, implementation, math, sortings

New Bus Route

implementation, sortings

Anton and Classes

greedy, sortings

Dishonest Sellers

constructive algorithms, greedy, sortings

Selling Numbers

dp, sortings

Hanoi Factory

brute force, data structures, dp, greedy, sortings

Game of Credit Cards

data structures, dp, greedy, sortings

Lie or Truth

*special problem, constructive algorithms, implementation, sortings

Blog Post Rating

data structures, sortings

Year of University Entrance

*special problem, implementation, sortings

Jon Snow and his Favourite Number

brute force, dp, implementation, sortings

Oath of the Night's Watch

constructive algorithms, sortings

Cartons of milk

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

Mahmoud and a Triangle

constructive algorithms, geometry, greedy, math, number theory, sortings

USB vs. PS/2

greedy, implementation, sortings, two pointers

Dasha and Very Difficult Problem

binary search, brute force, constructive algorithms, greedy, sortings

Felicity is Coming!

data structures, hashing, sortings, strings

PolandBall and Game

binary search, data structures, games, greedy, sortings, strings

Fedor and coupons

binary search, data structures, greedy, sortings

Winter Is Coming

dp, greedy, sortings

Gosha is hunting

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

Urbanization

greedy, number theory, sortings

Sockets

greedy, sortings

Exams

binary search, greedy, sortings

80-th Level Archeology

brute force, data structures, greedy, sortings

Subordinates

constructive algorithms, data structures, graphs, greedy, sortings

Road to Cinema

binary search, greedy, sortings

Ray Tracing

greedy, hashing, implementation, math, number theory, sortings

The New Year: Meeting Friends

implementation, math, sortings

Passwords

implementation, math, sortings, strings

Slalom

data structures, dp, sortings

Potions Homework

implementation, sortings

Filya and Homework

implementation, sortings

Sonya and Problem Wihtout a Legend

dp, sortings

Optimal Point on a Line

brute force, sortings

Checkpoints

greedy, implementation, sortings

Dividing Kingdom II

brute force, data structures, dsu, graphs, sortings

Little Robber Girl's Zoo

constructive algorithms, implementation, sortings

Kay and Eternity

brute force, implementation, sortings

Alyona and Mex

sortings

Runaway to a Shadow

geometry, sortings

Money Transfers

constructive algorithms, data structures, greedy, sortings

Cinema

implementation, sortings

Four Divisors

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

Polycarp and Hay

dfs and similar, dsu, graphs, greedy, sortings

Qualifying Contest

constructive algorithms, sortings

Bear and Three Balls

brute force, implementation, sortings

Nested Segments

data structures, sortings

Foe Pairs

combinatorics, sortings, two pointers

z-sort

sortings

Beautiful Paintings

greedy, sortings

Автобус

binary search, data structures, greedy, sortings

Печать условий

constructive algorithms, greedy, sortings

Собачки и миски

data structures, greedy, sortings

Собери стол

constructive algorithms, sortings

Hostname Aliases

*special problem, binary search, data structures, implementation, sortings, strings

Bear and Paradox

binary search, greedy, math, sortings

Bear and Contribution

data structures, greedy, sortings, two pointers

Chat Order

*special problem, binary search, constructive algorithms, data structures, sortings

Spy Syndrome 2

data structures, dp, hashing, implementation, sortings, string suffix structures, strings

The Smallest String Concatenation

sortings, strings

Report

data structures, sortings

Making a String

greedy, sortings

Ants in Leaves

dfs and similar, greedy, sortings, trees

Kingdom and its Cities

dfs and similar, divide and conquer, dp, graphs, sortings, trees

Skills

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

The Union of k-Segments

greedy, sortings

New Year and Three Musketeers

data structures, greedy, sortings

USB Flash Drives

greedy, implementation, sortings

Queries about less or equal elements

binary search, data structures, sortings, two pointers

Day at the Beach

sortings

Nearest vectors

geometry, sortings

Restaurant

dp, greedy, sortings

Wilbur and Trees

dp, math, probabilities, sortings

Wilbur and Points

combinatorics, greedy, sortings

Anton and Lines

geometry, sortings

Developing Skills

implementation, math, sortings

Kefa and Company

binary search, sortings, two pointers

Finding Team Member

brute force, implementation, sortings