Bombing

binary search, dp, probabilities

Graph

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

Harry Potter and the Golden Snitch

binary search, geometry

Hostname Aliases

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

Inna and Binary Logic

binary search, bitmasks, data structures

Exploration plan

binary search, flows, graph matchings, shortest paths

Hexagons

binary search, implementation, math

Bulmart

binary search, dfs and similar

Getting Deals Done

binary search, data structures

Level Generation

binary search, math, ternary search

Mahmoud and Ehab and the function

binary search, data structures, sortings

Santa Claus and Tangerines

binary search, data structures, greedy, two pointers

Vasya's Function

binary search, implementation, math

Grouped Carriages

binary search, data structures, dp, flows, greedy

Chip 'n Dale Rescue Rangers

binary search, geometry, math

Degenerate Matrix

binary search, math

Characteristics of Rectangles

binary search, bitmasks, brute force, implementation, sortings

Infinite Inversions

binary search, data structures, implementation, sortings, trees

The way home

binary search, data structures, dp, graphs, greedy, shortest paths, sortings

Random Task

binary search, bitmasks, combinatorics, dp, math

Yaroslav and Time

binary search, graphs, shortest paths

Fedor and coupons

binary search, data structures, greedy, sortings

Petya, Petya, Petr, and Palindromes

binary search, brute force, data structures, two pointers

Cartons of milk

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

Sand Fortress

binary search, constructive algorithms, math

Subway Pursuit

binary search, interactive, probabilities

Treasure Hunting

binary search, dp, greedy, implementation

Rain

binary search, brute force, data structures, geometry, greedy, implementation, math

Two strings

binary search, hashing, strings, two pointers

Learning to Paint

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

Sheikh (Hard Version)

binary search, bitmasks, brute force, greedy, implementation, two pointers

Sad powers

binary search, math, number theory

Range Deleting

binary search, combinatorics, data structures, two pointers

MST Unification

binary search, dsu, graphs, greedy

Anya and Cubes

binary search, bitmasks, brute force, dp, math, meet-in-the-middle

Red-Blue Operations (Easy Version)

binary search, greedy, implementation, math

New Year and Conference

binary search, data structures, hashing, sortings

MEX vs DIFF

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

Friends and Subsequences

binary search, data structures

Common Number

binary search, combinatorics, dp, math

Best Pair

binary search, brute force, implementation

Pencils and Boxes

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

Xor Tree

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

Martial Arts Tournament

binary search, brute force, greedy, math

Array Partition

binary search, data structures, greedy, two pointers

Guess The Maximums

binary search, implementation, interactive, math

Present

binary search, bitmasks, constructive algorithms, data structures, math, sortings

Two Arrays

binary search, brute force, combinatorics, constructive algorithms, dp, two pointers

Cut

binary search, data structures, dp, graphs, number theory, two pointers

Binary Median

binary search, bitmasks, brute force, constructive algorithms

Gift Set

binary search, greedy, math, ternary search

Binary Subsequence Rotation

binary search, constructive algorithms, data structures, greedy

Restorer Distance

binary search, greedy, math, sortings, ternary search

Blood Cousins

binary search, data structures, dfs and similar, trees

A and B and Lecture Rooms

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

Max Median

binary search, data structures, dp

Maximum Value

binary search, math, sortings, two pointers

Double Permutation Inc.

*special problem, binary search, greedy

Teams

*special problem, binary search, greedy, math

Bars

*special problem, binary search

Morning run

binary search, math, two pointers

Need For Brake

binary search, greedy, sortings

Present to Mom

binary search, two pointers

Robo-Footballer

binary search, geometry

Inna and Sequence

binary search, data structures, dp, trees

Log Stream Analysis

binary search, brute force, implementation, strings

Lemmings

binary search

Dima and Trap Graph

binary search, data structures, dfs and similar, dsu, shortest paths, two pointers

Number Busters

binary search, math

Sereja and Periods

binary search, dfs and similar, strings

Circular Mirror

binary search, combinatorics, geometry, math, two pointers

Restoring Increasing Sequence

binary search, brute force, greedy, implementation

Mahmoud and Ehab and the binary string

binary search, divide and conquer, interactive

Little Elephant and LCM

binary search, combinatorics, dp, math

Microtransactions (easy version)

binary search, greedy

Water Taps

binary search, greedy, sortings

The hat

binary search, interactive

Castle Defense

binary search, data structures, greedy, two pointers

Elongated Matrix

binary search, bitmasks, brute force, dp, graphs

Stripe 2

binary search, dp, sortings

Microtransactions (hard version)

binary search, greedy, implementation

Ithea Plays With Chtholly

binary search, constructive algorithms, games, greedy, interactive

Anya and the Mysterious String

binary search, data structures

Multi-Colored Segments

binary search, data structures, math, sortings

Unusual Minesweeper

binary search, dfs and similar, dsu, greedy, sortings

Pinball

binary search, data structures, implementation, math, two pointers

Multicolored Markers

binary search, brute force, math, number theory

Leaving Auction

binary search, data structures

Gadgets for dollars and pounds

binary search, greedy, two pointers

The Great Equalizer

binary search, data structures, math, sortings

Levko and Array

binary search, dp

Vlad and the Mountains

binary search, data structures, dsu, graphs, implementation, sortings, trees, two pointers

Robin Hood

binary search, greedy

Pillars

binary search, data structures, dp, sortings, trees

Game with modulo

binary search, constructive algorithms, interactive

Interacdive Problem

binary search, constructive algorithms, interactive

Vitya and Strange Lesson

binary search, data structures

Count the Trains

binary search, data structures, greedy, sortings

Strip

binary search, data structures, dp, two pointers

Guess the Permutation

binary search, combinatorics, interactive, math