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Problems

578 problems

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Array578Dynamic Programming332String191Math187Binary Search136Hash Table134Sorting106Greedy104Bit Manipulation103Graph96Depth-First Search91Heap (Priority Queue)78Prefix Sum77Matrix75Breadth-First Search71All topics

Hard · 578 results

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TitleSolutionAcceptDifficultyTopics
3625. Count Number of Trapezoids IIVideo
Solution40.0%Hard
Array, Geometry +2· 2 companies
3630. Partition Array for Maximum XOR and ANDVideo
–17.6%Hard
Array, Bit Manipulation +3· 1 company
3632. Subarrays with XOR at Least KPremium
–46.3%Hard
Array, Bit Manipulation +2
3636. Threshold Majority QueriesVideo
–22.5%Hard
Array, Binary Search +4· 4 companies
3640. Trionic Array IIVideo
Solution47.3%Hard
Array, Dynamic Programming· 6 companies
3651. Minimum Cost Path with TeleportationsVideo
Solution45.1%Hard
Array, Dynamic Programming +1· 4 companies
3655. XOR After Range Multiplication Queries IIVideo
Solution47.8%Hard
Array, Divide and Conquer· 2 companies
3661. Maximum Walls Destroyed by RobotsVideo
Solution48.0%Hard
Array, Binary Search +2· 3 companies
3671. Sum of Beautiful SubsequencesVideo
–31.5%Hard
Array, Binary Indexed Tree +2· 2 companies
3681. Maximum XOR of SubsequencesVideo
–49.5%Hard
Array, Bit Manipulation +2
3686. Number of Stable SubsequencesVideo
–58.9%Hard
Array, Dynamic Programming· 1 company
3691. Maximum Total Subarray Value IIVideo
Solution41.6%Hard
Array, Greedy +2· 3 companies
3695. Maximize Alternating Sum Using SwapsVideo
–62.5%Hard
Array, Greedy +2· 1 company
3710. Maximum Partition FactorVideo
–31.8%Hard
Array, Binary Search +4· 2 companies
3715. Sum of Perfect Square AncestorsVideo
–41.3%Hard
Array, Counting +5· 3 companies
3721. Longest Balanced Subarray IIVideo
Solution33.7%Hard
Array, Divide and Conquer +3· 2 companies
3725. Count Ways to Choose Coprime Integers from RowsVideo
–46.8%Hard
Array, Combinatorics +4
3729. Count Distinct Subarrays Divisible by K in Sorted ArrayVideo
Solution27.4%Hard
Array, Hash Table +1
3739. Count Subarrays With Majority Element IIVideo
Solution65.2%Hard
Array, Divide and Conquer +4· 2 companies
3743. Maximize Cyclic Partition ScoreVideo
–14.5%Hard
Array, Dynamic Programming· 2 companies
3748. Count Stable SubarraysVideo
Solution31.9%Hard
Array, Binary Search +1
3757. Number of Effective SubsequencesVideo
–30.4%Hard
Array, Bit Manipulation +3
3762. Minimum Operations to Equalize SubarraysVideo
–20.0%Hard
Array, Binary Search +2
3768. Minimum Inversion Count in Subarrays of Fixed LengthVideo
–40.3%Hard
Array, Segment Tree +1
3772. Maximum Subgraph Score in a TreeVideo
–65.4%Hard
Array, Depth-First Search +2· 1 company
3785. Minimum Swaps to Avoid Forbidden ValuesVideo
–30.4%Hard
Array, Counting +2· 1 company
3786. Total Sum of Interaction Cost in Tree GroupsVideo
–50.8%Hard
Array, Depth-First Search +1· 1 company
3797. Count Routes to Climb a Rectangular GridVideo
–23.1%Hard
Array, Dynamic Programming +2· 1 company
3801. Minimum Cost to Merge Sorted ListsVideo
Solution33.8%Hard
Array, Binary Search +3
3806. Maximum Bitwise AND After Increment OperationsVideo
Solution31.8%Hard
Array, Bit Manipulation +2· 1 company
3826. Minimum Partition ScoreVideo
–32.6%Hard
Array, Divide and Conquer +4
3830. Longest Alternating Subarray After Removing At Most One ElementVideo
Solution30.9%Hard
Array, Dynamic Programming +1
3836. Maximum Score Using Exactly K PairsVideo
Solution41.4%Hard
Array, Dynamic Programming
3841. Palindromic Path Queries in a TreeVideo
–34.8%Hard
Array, Divide and Conquer +3
3845. Maximum Subarray XOR with Bounded RangeVideo
Solution32.3%Hard
Array, Bit Manipulation +5
3850. Count Sequences to KVideo
Solution35.6%Hard
Array, Dynamic Programming +3· 2 companies
3859. Count Subarrays With K Distinct IntegersVideo
Solution21.0%Hard
Array, Counting +2
3873. Maximum Points Activated with One AdditionVideo
Solution42.8%Hard
Array, Hash Table +1
3878. Count Good SubarraysVideo
Solution26.2%Hard
Array, Bit Manipulation +2· 3 companies
3883. Count Non Decreasing Arrays With Given Digit SumsVideo
–40.3%Hard
Array, Dynamic Programming +1· 1 company
3886. Sum of Sortable IntegersVideo
Solution55.3%Hard
Array, Enumeration +2
3892. Minimum Operations to Achieve At Least K PeaksVideo
–29.8%Hard
Array, Dynamic Programming
3897. Maximum Value of Concatenated Binary SegmentsVideo
Solution26.7%Hard
Array, Greedy +1
3901. Good Subsequence QueriesVideo
Solution19.9%Hard
Array, Math +2· 2 companies
3910. Count Connected Subgraphs with Even Node SumVideo
Solution59.0%Hard
Array, Bit Manipulation +5
3911. K-th Smallest Remaining Even Integer in Subarray QueriesVideo
–28.6%Hard
Array, Binary Search
3915. Maximum Sum of Alternating Subsequence With Distance at Least KVideo
Solution30.7%Hard
Array, Dynamic Programming +1· 1 company
3920. Maximize Fixed Points After DeletionsVideo
–19.9%Hard
Array, Binary Search +1· 1 company
3928. Minimum Cost to Buy Apples IIVideo
–31.8%Hard
Array, Graph +2· 1 company
3934. Smallest Unique SubarrayVideo
Solution39.7%Hard
Array, Binary Search +4
Showing 501–550 of 578