Solutions & Explanations

Browse 4,029+ detailed solutions with multiple approaches, code in Python, Java, C++ and more.

4,029 Solutions961 Easy2102 Medium966 Hard

Title	Difficulty	Acceptance	Topics	Solution
3413. Maximum Coins From K Consecutive Bags	Medium	27.3%	Array Binary Search+4	Read
3428. Maximum and Minimum Sums of at Most Size K Subsequences	Medium	21.7%	Array Combinatorics+3	Read
3435. Frequencies of Shortest Supersequences	Hard	22.2%	Array Bit Manipulation+4	Read
3424. Minimum Cost to Make Arrays Identical	Medium	38.3%	Array Greedy+1	Read
3456. Find Special Substring of Length K	Easy	35.1%	String	Read
3417. Zigzag Grid Traversal With Skip	Easy	64.9%	Array Matrix+1	Read
3527. Find the Most Common Response	Medium	74.0%	Array Counting+2	Read
3399. Smallest Substring With Identical Characters II	Hard	39.0%	Binary Search String	Read
3471. Find the Largest Almost Missing Integer	Easy	49.4%	Array Hash Table	Read
3432. Count Partitions with Even Sum Difference	Easy	85.2%	Array Math+1	Read
3411. Maximum Subarray With Equal Products	Easy	47.2%	Array Enumeration+3	Read
3441. Minimum Cost Good Caption	Hard	20.5%	Dynamic Programming String	Read
3395. Subsequences with a Unique Middle Mode I	Hard	20.7%	Array Combinatorics+2	Read
3404. Count Special Subsequences	Medium	29.9%	Array Enumeration+2	Read
3422. Minimum Operations to Make Subarray Elements Equal	Medium	46.8%	Array Hash Table+3	Read
3444. Minimum Increments for Target Multiples in an Array	Hard	27.5%	Array Bit Manipulation+4	Read
3448. Count Substrings Divisible By Last Digit	Hard	23.7%	Dynamic Programming String	Read
3385. Minimum Time to Break Locks II	Hard	45.7%	Array Depth-First Search+1	Read
3455. Shortest Matching Substring	Hard	24.5%	Binary Search String+2	Read
3402. Minimum Operations to Make Columns Strictly Increasing	Easy	71.9%	Array Greedy+1	Read
3398. Smallest Substring With Identical Characters I	Hard	21.0%	Array Binary Search+1	Read
3382. Maximum Area Rectangle With Point Constraints II	Hard	24.0%	Array Binary Indexed Tree+4	Read
3410. Maximize Subarray Sum After Removing All Occurrences of One Element	Hard	23.0%	Array Dynamic Programming+1	Read
3425. Longest Special Path	Hard	23.2%	Array Depth-First Search+3	Read
3388. Count Beautiful Splits in an Array	Medium	19.3%	Array Dynamic Programming	Read
3392. Count Subarrays of Length Three With a Condition	Easy	61.5%	Array	Read
3407. Substring Matching Pattern	Easy	29.1%	String String Matching	Read
3403. Find the Lexicographically Largest String From the Box I	Medium	41.0%	Enumeration String+1	Read
3405. Count the Number of Arrays with K Matching Adjacent Elements	Hard	58.3%	Combinatorics Math	Read
3380. Maximum Area Rectangle With Point Constraints I	Medium	51.1%	Array Binary Indexed Tree+5	Read
3378. Count Connected Components in LCM Graph	Hard	30.7%	Array Hash Table+3	Read
3408. Design Task Manager	Medium	49.1%	Design Hash Table+2	Read
3418. Maximum Amount of Money Robot Can Earn	Medium	47.9%	Array Dynamic Programming+1	Read
3420. Count Non-Decreasing Subarrays After K Operations	Hard	25.0%	Array Monotonic Queue+5	Read
3393. Count Paths With the Given XOR Value	Medium	40.6%	Array Bit Manipulation+2	Read
3394. Check if Grid can be Cut into Sections	Medium	68.3%	Array Sorting	Read
3396. Minimum Number of Operations to Make Elements in Array Distinct	Easy	71.3%	Array Hash Table	Read
3377. Digit Operations to Make Two Integers Equal	Medium	31.3%	Graph Heap (Priority Queue)+3	Read
3381. Maximum Subarray Sum With Length Divisible by K	Medium	49.6%	Array Hash Table+1	Read
3379. Transformed Array	Easy	70.5%	Array Simulation	Read
3376. Minimum Time to Break Locks I	Medium	32.8%	Array Backtracking+4	Read
3389. Minimum Operations to Make Character Frequencies Equal	Hard	25.8%	Counting Dynamic Programming+3	Read
3412. Find Mirror Score of a String	Medium	36.1%	Hash Table Simulation+2	Read
3386. Button with Longest Push Time	Easy	41.0%	Array	Read
3375. Minimum Operations to Make Array Values Equal to K	Easy	73.3%	Array Hash Table	Read
3397. Maximum Number of Distinct Elements After Operations	Medium	52.2%	Array Greedy+1	Read
3387. Maximize Amount After Two Days of Conversions	Medium	60.6%	Array Breadth-First Search+3	Read
3414. Maximum Score of Non-overlapping Intervals	Hard	65.9%	Array Binary Search+2	Read
3879. Maximum Distinct Path Sum in a Binary Tree	Medium	51.2%		Read
3888. Minimum Operations to Make All Grid Elements Equal	Hard	61.3%		Read

#3413Medium

Maximum Coins From K Consecutive Bags

ArrayBinary SearchGreedy+3

Acceptance: 27.3%

#3428Medium

Maximum and Minimum Sums of at Most Size K Subsequences

ArrayCombinatoricsDynamic Programming+2

Acceptance: 21.7%

#3435Hard

Frequencies of Shortest Supersequences

ArrayBit ManipulationEnumeration+3

Acceptance: 22.2%

#3424Medium

Minimum Cost to Make Arrays Identical

ArrayGreedySorting

Acceptance: 38.3%

#3456Easy

Find Special Substring of Length K

String

Acceptance: 35.1%

#3417Easy

Zigzag Grid Traversal With Skip

ArrayMatrixSimulation

Acceptance: 64.9%

#3527Medium

Find the Most Common Response

ArrayCountingHash Table+1

Acceptance: 74.0%

#3399Hard

Smallest Substring With Identical Characters II

Binary SearchString

Acceptance: 39.0%

#3471Easy

Find the Largest Almost Missing Integer

ArrayHash Table

Acceptance: 49.4%

#3432Easy

Count Partitions with Even Sum Difference

ArrayMathPrefix Sum

Acceptance: 85.2%

#3411Easy

Maximum Subarray With Equal Products

ArrayEnumerationMath+2

Acceptance: 47.2%

#3441Hard

Minimum Cost Good Caption

Dynamic ProgrammingString

Acceptance: 20.5%

#3395Hard

Subsequences with a Unique Middle Mode I

ArrayCombinatoricsHash Table+1

Acceptance: 20.7%

#3404Medium

Count Special Subsequences

ArrayEnumerationHash Table+1

Acceptance: 29.9%

#3422Medium

Minimum Operations to Make Subarray Elements Equal

ArrayHash TableHeap (Priority Queue)+2

Acceptance: 46.8%

#3444Hard

Minimum Increments for Target Multiples in an Array

ArrayBit ManipulationBitmask+3

Acceptance: 27.5%

#3448Hard

Count Substrings Divisible By Last Digit

Dynamic ProgrammingString

Acceptance: 23.7%

#3385Hard

Minimum Time to Break Locks II

ArrayDepth-First SearchGraph

Acceptance: 45.7%

#3455Hard

Shortest Matching Substring

Binary SearchStringString Matching+1

Acceptance: 24.5%

#3402Easy

Minimum Operations to Make Columns Strictly Increasing

ArrayGreedyMatrix

Acceptance: 71.9%

#3398Hard

Smallest Substring With Identical Characters I

ArrayBinary SearchEnumeration

Acceptance: 21.0%

#3382Hard

Maximum Area Rectangle With Point Constraints II

ArrayBinary Indexed TreeGeometry+3

Acceptance: 24.0%

#3410Hard

Maximize Subarray Sum After Removing All Occurrences of One Element

ArrayDynamic ProgrammingSegment Tree

Acceptance: 23.0%

#3425Hard

Longest Special Path

ArrayDepth-First SearchHash Table+2

Acceptance: 23.2%

#3388Medium

Count Beautiful Splits in an Array

ArrayDynamic Programming

Acceptance: 19.3%

#3392Easy

Count Subarrays of Length Three With a Condition

Array

Acceptance: 61.5%

#3407Easy

Substring Matching Pattern

StringString Matching

Acceptance: 29.1%

#3403Medium

Find the Lexicographically Largest String From the Box I

EnumerationStringTwo Pointers

Acceptance: 41.0%

#3405Hard

Count the Number of Arrays with K Matching Adjacent Elements

CombinatoricsMath

Acceptance: 58.3%

#3380Medium

Maximum Area Rectangle With Point Constraints I

ArrayBinary Indexed TreeEnumeration+4

Acceptance: 51.1%

#3378Hard

Count Connected Components in LCM Graph

ArrayHash TableMath+2

Acceptance: 30.7%

#3408Medium

Design Task Manager

DesignHash TableHeap (Priority Queue)+1

Acceptance: 49.1%

#3418Medium

Maximum Amount of Money Robot Can Earn

ArrayDynamic ProgrammingMatrix

Acceptance: 47.9%

#3420Hard

Count Non-Decreasing Subarrays After K Operations

ArrayMonotonic QueueMonotonic Stack+4

Acceptance: 25.0%

#3393Medium

Count Paths With the Given XOR Value

ArrayBit ManipulationDynamic Programming+1

Acceptance: 40.6%

#3394Medium

Check if Grid can be Cut into Sections

ArraySorting

Acceptance: 68.3%

#3396Easy

Minimum Number of Operations to Make Elements in Array Distinct

ArrayHash Table

Acceptance: 71.3%

#3377Medium

Digit Operations to Make Two Integers Equal

GraphHeap (Priority Queue)Math+2

Acceptance: 31.3%

#3381Medium

Maximum Subarray Sum With Length Divisible by K

ArrayHash TablePrefix Sum

Acceptance: 49.6%

#3379Easy

Transformed Array

ArraySimulation

Acceptance: 70.5%

#3376Medium

Minimum Time to Break Locks I

ArrayBacktrackingBit Manipulation+3

Acceptance: 32.8%

#3389Hard

Minimum Operations to Make Character Frequencies Equal

CountingDynamic ProgrammingEnumeration+2

Acceptance: 25.8%

#3412Medium

Find Mirror Score of a String

Hash TableSimulationStack+1

Acceptance: 36.1%

#3386Easy

Button with Longest Push Time

Array

Acceptance: 41.0%

#3375Easy

Minimum Operations to Make Array Values Equal to K

ArrayHash Table

Acceptance: 73.3%

#3397Medium

Maximum Number of Distinct Elements After Operations

ArrayGreedySorting

Acceptance: 52.2%

#3387Medium

Maximize Amount After Two Days of Conversions

ArrayBreadth-First SearchDepth-First Search+2

Acceptance: 60.6%

#3414Hard

Maximum Score of Non-overlapping Intervals

ArrayBinary SearchDynamic Programming+1

Acceptance: 65.9%

#3879Medium

Maximum Distinct Path Sum in a Binary Tree

Acceptance: 51.2%

#3888Hard

Minimum Operations to Make All Grid Elements Equal

Acceptance: 61.3%

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