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
2494. Merge Overlapping Events in the Same Hall	Hard	32.9%	Database	Read
2499. Minimum Total Cost to Make Arrays Unequal	Hard	41.3%	Array Counting+2	Read
2503. Maximum Number of Points From Grid Queries	Hard	59.3%	Array Breadth-First Search+5	Read
2508. Add Edges to Make Degrees of All Nodes Even	Hard	36.7%	Graph Hash Table	Read
2509. Cycle Length Queries in a Tree	Hard	60.9%	Array Binary Tree+1	Read
2514. Count Anagrams	Hard	38.4%	Combinatorics Counting+3	Read
2518. Number of Great Partitions	Hard	33.4%	Array Dynamic Programming	Read
2519. Count the Number of K-Big Indices	Hard	53.2%	Array Binary Indexed Tree+5	Read
2524. Maximum Frequency Score of a Subarray	Hard	35.7%	Array Hash Table+3	Read
2528. Maximize the Minimum Powered City	Hard	61.8%	Array Binary Search+4	Read
2532. Time to Cross a Bridge	Hard	44.4%	Array Heap (Priority Queue)+1	Read
2534. Time Taken to Cross the Door	Hard	50.1%	Array Queue+1	Read
2538. Difference Between Maximum and Minimum Price Sum	Hard	34.5%	Array Depth-First Search+2	Read
2543. Check if Point Is Reachable	Hard	45.5%	Math Number Theory	Read
2547. Minimum Cost to Split an Array	Hard	44.8%	Array Counting+2	Read
2551. Put Marbles in Bags	Hard	72.2%	Array Greedy+2	Read
2552. Count Increasing Quadruplets	Hard	34.6%	Array Binary Indexed Tree+3	Read
2561. Rearranging Fruits	Hard	57.4%	Array Greedy+1	Read
2565. Subsequence With the Minimum Score	Hard	33.8%	Binary Search String+1	Read
2569. Handling Sum Queries After Update	Hard	31.8%	Array Segment Tree	Read
2573. Find the String with LCP	Hard	63.3%	Array Dynamic Programming+4	Read
2577. Minimum Time to Visit a Cell In a Grid	Hard	56.3%	Array Breadth-First Search+4	Read
2581. Count Number of Possible Root Nodes	Hard	48.7%	Array Depth-First Search+3	Read
2584. Split the Array to Make Coprime Products	Hard	29.3%	Array Hash Table+2	Read
2585. Number of Ways to Earn Points	Hard	60.2%	Array Dynamic Programming	Read
2589. Minimum Time to Complete All Tasks	Hard	40.4%	Array Binary Search+3	Read
2603. Collect Coins in a Tree	Hard	39.6%	Array Graph+2	Read
2604. Minimum Time to Eat All Grains	Hard	40.8%	Array Binary Search+2	Read
2608. Shortest Cycle in a Graph	Hard	40.5%	Breadth-First Search Graph	Read
2612. Minimum Reverse Operations	Hard	16.9%	Array Breadth-First Search+1	Read
2613. Beautiful Pairs	Hard	46.9%	Array Divide and Conquer+4	Read
2617. Minimum Number of Visited Cells in a Grid	Hard	24.1%	Array Breadth-First Search+6	Read
2630. Memoize II	Hard	31.5%		Read
2642. Design Graph With Shortest Path Calculator	Hard	65.6%	Design Graph+2	Read
2646. Minimize the Total Price of the Trips	Hard	48.5%	Array Depth-First Search+3	Read
2647. Color the Triangle Red	Hard	58.0%	Array Math	Read
2650. Design Cancellable Function	Hard	49.6%		Read
2659. Make Array Empty	Hard	27.4%	Array Binary Indexed Tree+5	Read
2663. Lexicographically Smallest Beautiful String	Hard	38.7%	Greedy String	Read
2675. Array of Objects to Matrix	Hard	68.4%		Read
2681. Power of Heroes	Hard	32.0%	Array Dynamic Programming+3	Read
2691. Immutability Helper	Hard	42.1%		Read
2699. Modify Graph Edge Weights	Hard	55.6%	Graph Heap (Priority Queue)+1	Read
2701. Consecutive Transactions with Increasing Amounts	Hard	33.0%	Database	Read
2702. Minimum Operations to Make Numbers Non-positive	Hard	44.1%	Array Binary Search	Read
2709. Greatest Common Divisor Traversal	Hard	41.6%	Array Math+2	Read
2713. Maximum Strictly Increasing Cells in a Matrix	Hard	31.3%	Array Binary Search+6	Read
2714. Find Shortest Path with K Hops	Hard	68.7%	Graph Heap (Priority Queue)+1	Read
2719. Count of Integers	Hard	38.9%	Dynamic Programming Math+1	Read
2720. Popularity Percentage	Hard	52.8%	Database	Read

#2494Hard

Merge Overlapping Events in the Same Hall

Database

Acceptance: 32.9%

#2499Hard

Minimum Total Cost to Make Arrays Unequal

ArrayCountingGreedy+1

Acceptance: 41.3%

#2503Hard

Maximum Number of Points From Grid Queries

ArrayBreadth-First SearchHeap (Priority Queue)+4

Acceptance: 59.3%

#2508Hard

Add Edges to Make Degrees of All Nodes Even

GraphHash Table

Acceptance: 36.7%

#2509Hard

Cycle Length Queries in a Tree

ArrayBinary TreeTree

Acceptance: 60.9%

#2514Hard

Count Anagrams

CombinatoricsCountingHash Table+2

Acceptance: 38.4%

#2518Hard

Number of Great Partitions

ArrayDynamic Programming

Acceptance: 33.4%

#2519Hard

Count the Number of K-Big Indices

ArrayBinary Indexed TreeBinary Search+4

Acceptance: 53.2%

#2524Hard

Maximum Frequency Score of a Subarray

ArrayHash TableMath+2

Acceptance: 35.7%

#2528Hard

Maximize the Minimum Powered City

ArrayBinary SearchGreedy+3

Acceptance: 61.8%

#2532Hard

Time to Cross a Bridge

ArrayHeap (Priority Queue)Simulation

Acceptance: 44.4%

#2534Hard

Time Taken to Cross the Door

ArrayQueueSimulation

Acceptance: 50.1%

#2538Hard

Difference Between Maximum and Minimum Price Sum

ArrayDepth-First SearchDynamic Programming+1

Acceptance: 34.5%

#2543Hard

Check if Point Is Reachable

MathNumber Theory

Acceptance: 45.5%

#2547Hard

Minimum Cost to Split an Array

ArrayCountingDynamic Programming+1

Acceptance: 44.8%

#2551Hard

Put Marbles in Bags

ArrayGreedyHeap (Priority Queue)+1

Acceptance: 72.2%

#2552Hard

Count Increasing Quadruplets

ArrayBinary Indexed TreeDynamic Programming+2

Acceptance: 34.6%

#2561Hard

Rearranging Fruits

ArrayGreedyHash Table

Acceptance: 57.4%

#2565Hard

Subsequence With the Minimum Score

Binary SearchStringTwo Pointers

Acceptance: 33.8%

#2569Hard

Handling Sum Queries After Update

ArraySegment Tree

Acceptance: 31.8%

#2573Hard

Find the String with LCP

ArrayDynamic ProgrammingGreedy+3

Acceptance: 63.3%

#2577Hard

Minimum Time to Visit a Cell In a Grid

ArrayBreadth-First SearchGraph+3

Acceptance: 56.3%

#2581Hard

Count Number of Possible Root Nodes

ArrayDepth-First SearchDynamic Programming+2

Acceptance: 48.7%

#2584Hard

Split the Array to Make Coprime Products

ArrayHash TableMath+1

Acceptance: 29.3%

#2585Hard

Number of Ways to Earn Points

ArrayDynamic Programming

Acceptance: 60.2%

#2589Hard

Minimum Time to Complete All Tasks

ArrayBinary SearchGreedy+2

Acceptance: 40.4%

#2603Hard

Collect Coins in a Tree

ArrayGraphTopological Sort+1

Acceptance: 39.6%

#2604Hard

Minimum Time to Eat All Grains

ArrayBinary SearchSorting+1

Acceptance: 40.8%

#2608Hard

Shortest Cycle in a Graph

Breadth-First SearchGraph

Acceptance: 40.5%

#2612Hard

Minimum Reverse Operations

ArrayBreadth-First SearchOrdered Set

Acceptance: 16.9%

#2613Hard

Beautiful Pairs

ArrayDivide and ConquerGeometry+3

Acceptance: 46.9%

#2617Hard

Minimum Number of Visited Cells in a Grid

ArrayBreadth-First SearchDynamic Programming+5

Acceptance: 24.1%

#2630Hard

Memoize II

Acceptance: 31.5%

#2642Hard

Design Graph With Shortest Path Calculator

DesignGraphHeap (Priority Queue)+1

Acceptance: 65.6%

#2646Hard

Minimize the Total Price of the Trips

ArrayDepth-First SearchDynamic Programming+2

Acceptance: 48.5%

#2647Hard

Color the Triangle Red

ArrayMath

Acceptance: 58.0%

#2650Hard

Design Cancellable Function

Acceptance: 49.6%

#2659Hard

Make Array Empty

ArrayBinary Indexed TreeBinary Search+4

Acceptance: 27.4%

#2663Hard

Lexicographically Smallest Beautiful String

GreedyString

Acceptance: 38.7%

#2675Hard

Array of Objects to Matrix

Acceptance: 68.4%

#2681Hard

Power of Heroes

ArrayDynamic ProgrammingMath+2

Acceptance: 32.0%

#2691Hard

Immutability Helper

Acceptance: 42.1%

#2699Hard

Modify Graph Edge Weights

GraphHeap (Priority Queue)Shortest Path

Acceptance: 55.6%

#2701Hard

Consecutive Transactions with Increasing Amounts

Database

Acceptance: 33.0%

#2702Hard

Minimum Operations to Make Numbers Non-positive

ArrayBinary Search

Acceptance: 44.1%

#2709Hard

Greatest Common Divisor Traversal

ArrayMathNumber Theory+1

Acceptance: 41.6%

#2713Hard

Maximum Strictly Increasing Cells in a Matrix

ArrayBinary SearchDynamic Programming+5

Acceptance: 31.3%

#2714Hard

Find Shortest Path with K Hops

GraphHeap (Priority Queue)Shortest Path

Acceptance: 68.7%

#2719Hard

Count of Integers

Dynamic ProgrammingMathString

Acceptance: 38.9%

#2720Hard

Popularity Percentage

Database

Acceptance: 52.8%

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