PE Lesson

dp

Dima and Kicks

brute force, dsu, graphs, implementation

Lesson Timetable

combinatorics, dp, math

Strange town

constructive algorithms, math

Deciphering

flows, graph matchings

Summer Homework

data structures, math

Race

brute force, implementation, two pointers

Spring cleaning

*special problem, data structures, dfs and similar, graphs, trees

Wormhouse

dfs and similar, graphs

Pasha and Pipe

binary search, brute force, combinatorics, dp, implementation

Square Equation Roots

math

Stars

constructive algorithms, geometry

Divisibility Rules

math, number theory

Convex Countour

dp

Polycarpus is Looking for Good Substrings

bitmasks, hashing, implementation

Domino Carpet

dp, implementation

Hercule Poirot Problem

dsu, graphs

Say Hello

geometry

Archer's Shot

binary search, geometry, math, two pointers

Transportation

greedy, sortings, two pointers

Polygon

constructive algorithms, geometry

Race

brute force, implementation

Inquisition

geometry, implementation, sortings

Berland Square

implementation, math

Big Number and Remainder

*special problem, math, number theory

The Beaver's Problem - 2

Script Generation

Array Sorting

*special problem

Toys

brute force, combinatorics

Dogecoin

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

Array sorting

*special problem, sortings

Suns and Rays

Two IP Cameras

*special problem, math, number theory

kotlinkotlinkotlinkotlin...

*special problem, graphs, implementation, strings

Игра в Девятку III

*special problem, brute force

Table Bowling

*special problem, sortings

Composing Of String

*special problem, dp

Pairwise Sums

*special problem

Hamming Distance

*special problem

Little Artem and Graph

Собери число

graphs, shortest paths

The Beaver's Problem - 3

Perse-script

*special problem, expression parsing

Xenia and Tree

data structures, divide and conquer, trees

Tree and Queries

data structures, dfs and similar, trees

Buy Low Sell High

constructive algorithms, data structures, greedy

Jzzhu and Numbers

bitmasks, combinatorics, dp

The Fair Nut and Rectangles

data structures, dp, geometry

One Occurrence

data structures, divide and conquer

Minimum Path

graphs, shortest paths

Cats Transport

data structures, dp

DZY Loves Fibonacci Numbers

data structures, math, number theory

Blood Cousins Return

binary search, data structures, dfs and similar, dp, sortings

Lucky Queries

data structures

DZY Loves Colors

data structures

Team Work

combinatorics, dp, math

Group Projects

dp

The Shortest Statement

graphs, shortest paths, trees

Thief in a Shop

divide and conquer, dp, fft, math

Till I Collapse

data structures, divide and conquer

Karen and Supermarket

brute force, dp, trees

Subarray Sorting

data structures, sortings

XOR Tree

bitmasks, data structures, dfs and similar, dsu, greedy, trees

Kindergarten

data structures, dp, greedy

Voting (Hard Version)

binary search, data structures, greedy

Imbalance Value of a Tree

data structures, dsu, graphs, trees

Fruit Sequences

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

Divide Square

data structures, geometry, implementation, sortings

Vasya and Binary String

dp

New Year Tree

data structures, divide and conquer, trees

Complicated Computations

binary search, data structures, two pointers

Are You Fired?

constructive algorithms, data structures, greedy, implementation

Love-Hate

bitmasks, brute force, dp, probabilities

Editorial for Two

binary search, data structures, greedy, implementation

Fib-tree

brute force, dfs and similar, divide and conquer, number theory, trees

Mr. Kitayuta's Colorful Graph

brute force, dfs and similar, dsu, graphs

Nastya and Unexpected Guest

dfs and similar, dp, graphs, shortest paths

DeadLee

data structures, dfs and similar, greedy, implementation, sortings

Bindian Signalizing

data structures

Phoenix and Berries

brute force, dp, greedy, math

Game on Sum (Hard Version)

combinatorics, dp, games, math

Bombs

data structures, two pointers

Ball

data structures, sortings

Omkar and Landslide

binary search, constructive algorithms, data structures, greedy, math

Mahmoud and Ehab and yet another xor task

bitmasks, dp, math, matrices

Make Them Similar

bitmasks, brute force, hashing, meet-in-the-middle

Petya and Graph

flows, graphs

Avoid Rainbow Cycles

data structures, dsu, graphs, greedy, sortings, trees

Catowice City

2-sat, dfs and similar, graph matchings, graphs

Copy or Prefix Sum

combinatorics, data structures, dp, sortings

A Bit Similar

bitmasks, brute force, hashing, string suffix structures, strings, two pointers

Mike and distribution

constructive algorithms, sortings

William The Oblivious

bitmasks, data structures, dp, matrices

MEX Tree

combinatorics, dfs and similar, implementation, math, trees

Please, another Queries on Array?

bitmasks, data structures, divide and conquer, math, number theory

Colorful Operations

brute force, data structures, implementation

Broken robot

dp, math, probabilities

Red-Blue Operations (Hard Version)

binary search, constructive algorithms, greedy, implementation, math

You Are Given Some Strings...

brute force, string suffix structures, strings

Fedor and Essay

dfs and similar, dp, graphs, hashing, strings