Epidemic in Monstropolis

constructive algorithms, dp, greedy, two pointers

High Load

constructive algorithms, greedy, implementation, trees

Maximum Diameter Graph

constructive algorithms, graphs, implementation

Connected Component on a Chessboard

constructive algorithms, implementation

A Mist of Florescence

constructive algorithms, graphs

ZgukistringZ

brute force, constructive algorithms, implementation, strings

Set To Max (Hard Version)

constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings

Almost Sorted

binary search, combinatorics, constructive algorithms, implementation

Hanging Hearts

constructive algorithms, data structures, dfs and similar, dp, greedy, trees

Imbalanced Arrays

constructive algorithms, graphs, greedy, math, sortings, two pointers

Sasha and One More Name

constructive algorithms, hashing, strings

Tolik and His Uncle

constructive algorithms

Graph and String

constructive algorithms, graphs

Ralph And His Magic Field

combinatorics, constructive algorithms, math, number theory

Numbers on Tree

constructive algorithms, data structures, dfs and similar, graphs, greedy, trees

Send Boxes to Alice (Easy Version)

constructive algorithms, greedy, math, number theory, ternary search, two pointers

Vasya And The Matrix

constructive algorithms, flows, math

Too Many Impostors (easy version)

constructive algorithms, implementation, interactive

Bit Guessing Game

binary search, bitmasks, constructive algorithms, interactive

Irreducible Anagrams

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

Ksyusha and Chinchilla

constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees

Missing Subsequence Sum

bitmasks, constructive algorithms, greedy, number theory

Omkar and the Meaning of Life

constructive algorithms, greedy, interactive

Problem for Nazar

constructive algorithms, math

Cyclic Operations

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation

Tournament Countdown

constructive algorithms, greedy, interactive, number theory, probabilities

Max GEQ Sum

binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers

Range and Partition

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

Nezzar and Board

constructive algorithms, math, number theory

Make Palindrome

constructive algorithms, greedy, strings

Maximize the Intersections

combinatorics, constructive algorithms, geometry, greedy, sortings

Lost Tree

constructive algorithms, interactive, trees

Magic Grid

constructive algorithms

Binary String Sorting

constructive algorithms, greedy

Slimes

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

Shortest and Longest LIS

constructive algorithms, graphs, greedy, two pointers

Mark and Lightbulbs

combinatorics, constructive algorithms, greedy, math, sortings

Vasya And Array

constructive algorithms, greedy, implementation

Interesting Array

constructive algorithms, data structures, trees

Integral Array

brute force, constructive algorithms, data structures, math

Take a Guess

bitmasks, constructive algorithms, interactive, math

Array Differentiation

bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math

Lucky Permutation

constructive algorithms, dfs and similar, graphs, greedy

Range = √Sum

binary search, brute force, constructive algorithms, math, two pointers

Letter Picking

constructive algorithms, dp, games, two pointers

Zookeeper and The Infinite Zoo

bitmasks, constructive algorithms, dp, greedy, math

Primitive Primes

constructive algorithms, math, ternary search

Minimum Euler Cycle

constructive algorithms, graphs, greedy, implementation

Increasing Subsequences

bitmasks, constructive algorithms, divide and conquer, greedy, math

String Coloring (easy version)

constructive algorithms, dp, graphs, greedy, sortings

Messenger in MAC

binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings

Rock, Paper, Scissors

brute force, constructive algorithms, flows, greedy, math

Paint the Tree

brute force, constructive algorithms, dp, graphs, implementation, trees

Task On The Board

constructive algorithms, greedy, implementation, sortings

Edge Weight Assignment

bitmasks, constructive algorithms, dfs and similar, greedy, math, trees

Recover an RBS

constructive algorithms, greedy, implementation, strings

Extreme Subtraction

constructive algorithms, dp, greedy

Dreamoon Likes Coloring

constructive algorithms, greedy, implementation, math

Diane

constructive algorithms, greedy, strings

Little Elephant and Array

constructive algorithms, data structures

Stoned Game

brute force, constructive algorithms, games, greedy

Carousel

constructive algorithms, dp, graphs, greedy, math

Headquarters

constructive algorithms, math

Disposition

constructive algorithms, math

Minimum Sum

constructive algorithms, greedy, math

Tablecity

constructive algorithms, implementation

Discounts

constructive algorithms, greedy, sortings

Easy Chess

constructive algorithms

Sets

constructive algorithms, hashing, implementation

Artsem and Saunders

constructive algorithms, dsu, math

Processing Queries

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

Convex Shape

constructive algorithms, implementation

Balls and Boxes

constructive algorithms, greedy, implementation

Pavel and barbecue

constructive algorithms, dfs and similar

Clear Symmetry

constructive algorithms, dp, math

Petya and His Friends

constructive algorithms, math, number theory

Terse princess

constructive algorithms, greedy

Four Segments

brute force, constructive algorithms, geometry, implementation, math

Colored Rooks

constructive algorithms, graphs

Train Splitting

constructive algorithms, graphs, greedy

Constructing Tests

binary search, brute force, constructive algorithms

Lazy Student

constructive algorithms, data structures, graphs

Three Logos

bitmasks, brute force, constructive algorithms, geometry, implementation, math

Railway System

constructive algorithms, graphs, greedy, interactive, sortings

Parity Game

constructive algorithms

Sea Battle

constructive algorithms, greedy, math

A Leapfrog in the Array

constructive algorithms, math

Graph And Its Complement

constructive algorithms, graphs, implementation

Devu and Partitioning of the Array

brute force, constructive algorithms, implementation, number theory

Unfair Poll

binary search, constructive algorithms, implementation, math

Cutting Figure

constructive algorithms, graphs, trees

Subsequence Counting

bitmasks, constructive algorithms, greedy, implementation

Playing Piano

constructive algorithms, dp

Watch the Videos

binary search, constructive algorithms, two pointers

Dasha and Very Difficult Problem

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

Array Restoration

constructive algorithms, data structures

Yet Another Ball Problem

constructive algorithms, implementation

Polyline

constructive algorithms, implementation

Jury Marks

brute force, constructive algorithms

Array Product

constructive algorithms, greedy, math