Red-Blue Operations (Hard Version)

binary search, constructive algorithms, greedy, implementation, math

Red-Blue Operations (Easy Version)

binary search, greedy, implementation, math

Bus Routes

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

Palindrome Partition

binary search, brute force, data structures, dp, hashing, strings

Range Sorting (Hard Version)

binary search, data structures, dp, greedy

Range Sorting (Easy Version)

binary search, dp, dsu, greedy, trees, two pointers

Black Cells

binary search, brute force, greedy, math

Almost Increasing Subsequence

binary search, data structures, greedy

Balancing Weapons

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

Vlad and the Nice Paths (hard version)

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

Living Sequence

binary search, dp, math, number theory

Climbing the Tree

binary search, math

Traveling in Berland

binary search, data structures, graphs, greedy, implementation

Two Tanks

binary search, dp, implementation, math

Points on Plane

binary search, greedy, math

Petya, Petya, Petr, and Palindromes

binary search, brute force, data structures, two pointers

Interview

binary search, implementation, interactive

Survival of the Weakest (easy version)

binary search, brute force, implementation, math, sortings

Place for a Selfie

binary search, data structures, geometry, math

Approximate Diameter

binary search, divide and conquer, graphs, shortest paths

The way home

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

Music Festival

binary search, data structures, dp, greedy, sortings

Halve or Subtract

binary search, brute force, dp, greedy, sortings

Maximum Set

binary search, math

Blocking Chips

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

Explosions?

binary search, data structures, dp, greedy, math

Tea Tasting

binary search, data structures, implementation

Scoring Subsequences

binary search, greedy, math, two pointers

Velepin and Marketing

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

Moscow Gorillas

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

Fixed Prefix Permutations

binary search, bitmasks, data structures, hashing, math, sortings

Min Max Sort

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

Teleporters (Hard Version)

binary search, greedy, sortings

Range Update Point Query

binary search, brute force, data structures

Moving Dots

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

Codeforces Scoreboard

binary search, data structures, dp, geometry

Yet Another Tournament

binary search, greedy, sortings

Rectangle Shrinking

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

Delicious Dessert

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

Josuke and Complete Graph

binary search, brute force, data structures, math, number theory

Bit Guessing Game

binary search, bitmasks, constructive algorithms, interactive

Edge Reverse

binary search, dfs and similar, graphs, trees

Quiz Master

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

Parmigiana With Seafood

binary search, dp, greedy, trees

Controllers

binary search, math

Magician and Pigs (Hard Version)

binary search, brute force, data structures, implementation

Hot and Cold

binary search, interactive

BinCoin

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

Gaining Rating

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

Hossam and Range Minimum Query

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

Hossam and Friends

binary search, constructive algorithms, dp, two pointers

Копирование файлов II

*special problem, binary search, brute force, math

Decomposition

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

Hospital Queue

binary search, graphs, greedy, implementation

Watch the Videos

binary search, constructive algorithms, two pointers

Doremy's Perfect DS Class (Hard Version)

binary search, interactive

Doremy's Perfect DS Class (Medium Version)

binary search, interactive

Doremy's Perfect DS Class (Easy Version)

binary search, interactive

Incinerate

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

Good Pairs

binary search, data structures, dp

Make It Connected

binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers

Quests

binary search, greedy, sortings

Restore the Permutation

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

All Possible Digits

binary search, data structures, greedy, math, number theory

Range = √Sum

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

N Machines

binary search, brute force, greedy

Bracket Cost

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

Number Game

binary search, data structures, games, greedy, implementation

Yet Another Array Counting Problem

binary search, data structures, divide and conquer, dp, flows, math, trees

Yet Another Problem

binary search, bitmasks, constructive algorithms, data structures

Olympiad Training

binary search, data structures, dp, flows, geometry, implementation, sortings

Joking (Easy Version)

binary search, constructive algorithms, interactive, ternary search

Traffic Light

binary search, implementation, two pointers

FTL

binary search, dp

Scuza

binary search, greedy, math

Multi-Colored Segments

binary search, data structures, math, sortings

Reset K Edges

binary search, data structures, dfs and similar, graphs, greedy, trees

Ela Takes Dancing Class

binary search, data structures

Ela's Fitness and the Luxury Number

binary search, implementation, math

Good Subarrays (Hard Version)

binary search, data structures, dp, two pointers

Good Subarrays (Easy Version)

binary search, data structures, schedules, two pointers

Sheikh (Hard Version)

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

Sheikh (Easy version)

binary search, bitmasks, greedy, two pointers

Valiant's New Map

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

Meeting on the Line

binary search, geometry, greedy, implementation, math, ternary search

Illumination

binary search, bitmasks, brute force, combinatorics, dp, math, two pointers

Mainak and the Bleeding Polygon

binary search, geometry, implementation, math

Garage

binary search, geometry, math

Deducing Sortability

binary search, bitmasks, math

Circular Mirror

binary search, combinatorics, geometry, math, two pointers

Basketball Together

binary search, greedy, sortings

Min-Max Array Transformation

binary search, greedy, two pointers

Fighting Tournament

binary search, data structures, implementation, two pointers

Path Prefixes

binary search, data structures, dfs and similar, trees

Triameter

binary search, data structures, dfs and similar, trees

LCM Sum (easy version)

binary search, brute force, combinatorics, math, number theory, two pointers

Empty Graph

binary search, constructive algorithms, data structures, greedy, shortest paths

Two Arrays

binary search, games, graph matchings

Rain

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

Rorororobot

binary search, data structures, greedy, math