Volcanoes

binary search, implementation, sortings, two pointers

Lihmuf Balling

binary search, brute force, math

XOR Partition

binary search, bitmasks, data structures, divide and conquer, greedy, trees

k-substrings

binary search, hashing, string suffix structures

Gardener Alex

binary search, data structures

Duff in Mafia

2-sat, binary search

Delicious Dessert

binary search, dsu, hashing, math, number theory, string suffix structures

Graph

*special problem, binary search, dfs and similar, dp, math, ternary search

Mashmokh and Water Tanks

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

Round Marriage

binary search, graph matchings, greedy

Tricky and Clever Password

binary search, constructive algorithms, data structures, greedy, hashing, strings

Even Split

binary search, constructive algorithms, greedy, math

Traveling in Berland

binary search, data structures, graphs, greedy, implementation

Segments on the Line

binary search, dp

Misha and Palindrome Degree

binary search, combinatorics, implementation

Find a Gift

binary search, interactive, probabilities

BinCoin

binary search, divide and conquer, hashing, implementation, probabilities, trees

Prefix Sums

binary search, brute force, combinatorics, math, matrices

DZY Loves Planting

binary search, dsu, trees

Smile House

binary search, graphs, matrices

Friends

binary search, bitmasks, data structures, math

DZY Loves Strings

binary search, hashing, strings, two pointers

Polycarp's problems

binary search, dp, greedy

Liar

binary search, dp, hashing, string suffix structures

Halve or Subtract

binary search, brute force, dp, greedy, sortings

Harry Potter and the Golden Snitch

binary search, geometry

Freezing with Style

binary search, data structures, divide and conquer, trees

Two Tanks

binary search, dp, implementation, math

Robo-Footballer

binary search, geometry

Preorder Test

binary search, dfs and similar, dp, graphs, greedy, trees

Hobbits

binary search, geometry

Thwarting Demonstrations

binary search, data structures, trees

Divan and a Cottage

binary search, data structures

Curfew

binary search, brute force, greedy, sortings

Gotta Go Fast

binary search, dp

Split

binary search, data structures, divide and conquer, dsu, math, trees, two pointers

Balancing Weapons

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

Survival of the Weakest (easy version)

binary search, brute force, implementation, math, sortings

Power Sockets

binary search, data structures, greedy

April Fools' Problem (hard)

binary search, data structures, flows

Groceries in Meteor Town

binary search, data structures, dsu, trees

New Year and Handle Change

binary search, dp

Inna and Sequence

binary search, data structures, dp, trees

Mushroom Gnomes - 2

binary search, data structures, probabilities, sortings

George and Cards

binary search, data structures

Delivery Club

binary search, data structures, dp

Approximate Diameter

binary search, divide and conquer, graphs, shortest paths

The Boss's Identity

binary search, bitmasks, data structures, dfs and similar, greedy, math, sortings

Копирование файлов II

*special problem, binary search, brute force, math

Case of a Top Secret

binary search, implementation, math

Berland collider

binary search

Log Stream Analysis

binary search, brute force, implementation, strings

Construct a tree

binary search, constructive algorithms, dfs and similar, graphs, greedy, trees

Misha and LCP on Tree

binary search, dfs and similar, hashing, string suffix structures, trees

Programming Language

binary search, brute force, expression parsing, implementation

NN country

binary search, data structures, trees

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

Smooth Sailing (Easy Version)

binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths

Morse Code

binary search, data structures, dp, hashing, sortings, string suffix structures, strings

Guard Duty (medium)

binary search, dp, greedy, sortings

Magnets

binary search, constructive algorithms, interactive

Boboniu and String

binary search, geometry, ternary search

Chemistry Experiment

binary search, data structures, ternary search

Lottery

binary search, brute force, greedy, math, two pointers

Cookies

binary search, data structures, dfs and similar, dp, games, trees

Hostname Aliases

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

Choosing Subtree is Fun

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

Guard Towers

binary search, dsu, geometry, graphs, sortings

Game with Cards

binary search, constructive algorithms, data structures, dp, greedy, implementation

Mathematician Takeover

binary search, dfs and similar, math

Distance Tree (hard version)

binary search, dfs and similar, shortest paths, trees

Rest In The Shades

binary search, geometry

Velepin and Marketing

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

Inna and Binary Logic

binary search, bitmasks, data structures

Prairie Partition

binary search, constructive algorithms, greedy, math

Unique Array

binary search, data structures, divide and conquer, dp, greedy

Group Photo

binary search, data structures, implementation, two pointers

Résumé Review

binary search, greedy, math

Exploration plan

binary search, flows, graph matchings, shortest paths

Hexagons

binary search, implementation, math

Odd Mineral Resource

binary search, bitmasks, brute force, data structures, probabilities, trees

Hossam and Range Minimum Query

binary search, bitmasks, data structures, hashing, probabilities, strings, trees

Choose a Square

binary search, data structures, sortings

New Year and the Acquaintance Estimation

binary search, data structures, graphs, greedy, implementation, math, sortings

Nudist Beach

binary search, graphs, greedy

Parametric MST

binary search, constructive algorithms, graphs, greedy, math, sortings

Vasya and Maximum Profit

binary search, constructive algorithms, data structures, dp, dsu

Array Equalizer

binary search, greedy, implementation, math, number theory, sortings, two pointers

Hiking

binary search, dp

Bulmart

binary search, dfs and similar

Sonya and Ice Cream

binary search, data structures, dp, greedy, shortest paths, trees

MST Company

binary search, graphs

Empire Strikes Back

binary search, math, number theory

Nastya Hasn't Written a Legend

binary search, data structures

Lemmings

binary search

Blocking Chips

binary search, constructive algorithms, dfs and similar, greedy, trees

Labyrinth

binary search, dsu, greedy

New Passenger Trams

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

Classical?

binary search, combinatorics, number theory

Controversial Rounds

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