Adjusting Drones

binary search, brute force, data structures, dp, dsu, greedy, implementation, sortings

Billion Players Game

binary search, greedy, math, sortings, ternary search, two pointers

Best Time to Buy and Sell Stock

binary search, brute force, data structures, dp, games, graphs, greedy

Find the Last Number

binary search, bitmasks, constructive algorithms, interactive

Strange Machine

binary search, brute force, greedy, implementation

No Mind To Think

binary search, divide and conquer, greedy, sortings, ternary search, two pointers

Hidden Single (Version 2)

binary search, divide and conquer, interactive, math, probabilities

Buratsuta 3

binary search, brute force, data structures, divide and conquer, probabilities

Nezuko in the Clearing

binary search, math, ternary search

Farmer John's Last Wish

binary search, data structures, math, number theory

Split

binary search, data structures, two pointers

Maximum OR Popcount

binary search, bitmasks, brute force, data structures, greedy

Wrong Binary Search

binary search, constructive algorithms

Predicting Popularity

binary search, data structures, greedy, sortings

Monocarp's String

binary search, greedy, strings

Inversion Graph Coloring (Hard Version)

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

Prefix Maximum Invariance

binary search, combinatorics, data structures, sortings

By the Assignment

binary search, bitmasks, combinatorics, dfs and similar, dsu, graphs, math

Arithmetics Competition

binary search, data structures, greedy, sortings, ternary search

From 1 to Infinity

binary search, dp, implementation, math

The Cunning Seller (hard version)

binary search, greedy, math

Unjust Binary Life

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

Interactive RBS (Hard Version)

binary search, bitmasks, constructive algorithms, dp, interactive

Interactive RBS (Medium Version)

binary search, bitmasks, constructive algorithms, interactive

Interactive RBS (Easy Version)

binary search, bitmasks, constructive algorithms, interactive

Submedians (Hard Version)

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

Submedians (Easy Version)

binary search, data structures, dp, greedy, math

Inter Active (Hard Version)

binary search, bitmasks, constructive algorithms, graphs, implementation, interactive, math, probabilities

Inter Active (Easy Version)

binary search, constructive algorithms, interactive, probabilities

Big Wins! (hard version)

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

Big Wins! (easy version)

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

Timofey and Docker

binary search, divide and conquer, dp

Maximise Sum

binary search, data structures

MEX Count

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

Ice Baby

binary search, brute force, data structures, dp, implementation, sortings

Yamakasi

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

Lanes of Cars

binary search, dp, ternary search

Red Light, Green Light (Hard version)

binary search, brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory

Retaliation

binary search, math, number theory

Small Operations

binary search, brute force, dfs and similar, dp, math, number theory, sortings

Square Year

binary search, brute force, math

Cheater

binary search, constructive algorithms, greedy, implementation

Coloring Game

binary search, brute force, greedy, two pointers

Divisible Subarrays

binary search, bitmasks, brute force, data structures, interactive

Changing the String

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

Fewer Batteries

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

Penguin Steps

binary search, dfs and similar, flows, graphs, shortest paths

Fallen Towers

binary search, greedy

Needle in a Numstack

binary search, brute force, implementation, interactive

Neo's Escape

binary search, brute force, data structures, dp, dsu, graphs, greedy, implementation

Cycling (Hard Version)

binary search, brute force, data structures, dp, greedy

Cycling (Easy Version)

binary search, brute force, dp, greedy

Ain and Apple Tree

binary search, constructive algorithms, greedy, math, trees

Maximum Subarray Sum

binary search, constructive algorithms, dp, implementation, math

Baudelaire (hard version)

binary search, dfs and similar, divide and conquer, implementation, interactive, trees

Baudelaire (easy version)

binary search, constructive algorithms, divide and conquer, greedy, interactive, trees

Wolf

binary search, greedy, math

Flower Boy

binary search, dp, greedy, two pointers

Numbers and Strings

binary search, brute force, dfs and similar, dp, implementation, math

Unpleasant Strings

binary search, dp, greedy, strings

Array and GCD

binary search, greedy, math, number theory

Median Splits

binary search, greedy, implementation, sortings

23 Kingdom

binary search, brute force, data structures, greedy, ternary search, two pointers

Would It Be Unrated?

*special problem, binary search, brute force

La Vaca Saturno Saturnita

binary search, brute force, math, number theory

Shorten the Array

binary search, bitmasks, data structures, dfs and similar, greedy, strings, trees, two pointers

Min Max MEX

binary search, brute force, greedy

Igor and Mountain

binary search, brute force, dp

Place of the Olympiad

binary search, greedy, math

Canteen (Hard Version)

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

Canteen (Easy Version)

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

Large Array and Segments

binary search, brute force, greedy

Blossom

binary search, combinatorics, dp, implementation, math, two pointers

Arcology On Permafrost

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

Order Statistics

*special problem, binary search

Beautiful Sequence Returns

binary search, brute force, data structures, implementation

Two Colors

binary search, combinatorics, math

I've Been Flipping Numbers for 300 Years and Calculated the Sum

binary search, brute force, combinatorics, divide and conquer, math, number theory

Do You Love Your Hero and His Two-Hit Multi-Target Attacks?

binary search, brute force, constructive algorithms, dp, geometry, greedy, math

Towering Arrays

binary search, data structures

Limited Repainting

binary search, greedy

Palindrome Shuffle

binary search, greedy, hashing, strings, two pointers

Ads

binary search, greedy, two pointers

Tropical Season

binary search, data structures, greedy, implementation

Skibidus and Fanum Tax (hard version)

binary search, greedy

Skibidus and Fanum Tax (easy version)

binary search, dp, greedy

We Be Summing

binary search, data structures, dp, two pointers

Eating

binary search, bitmasks, brute force, data structures, dp, greedy, trees, two pointers

Variety is Discouraged

binary search, constructive algorithms, greedy, two pointers

Game With Triangles

binary search, brute force, data structures, geometry, greedy, implementation, math, ternary search, two pointers

Kevin and Geometry

binary search, geometry

Formation

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

Another Exercise on Graphs (hard version)

binary search, dfs and similar, dp, dsu, graphs, shortest paths, sortings

Another Exercise on Graphs (Easy Version)

binary search, brute force, dp, dsu, graphs, shortest paths, sortings

Unique Median

binary search, brute force, combinatorics, data structures, divide and conquer, dp

Naive String Splits

binary search, brute force, greedy, hashing, math, number theory, strings

Refined Product Optimality

binary search, data structures, greedy, math, schedules, sortings

Outstanding Impressionist

binary search, brute force, data structures, greedy

Judicious Watching

binary search, greedy, sortings

Best Price

binary search, brute force, data structures, greedy, sortings