LeetCode Contest

Contest Rating & Badge

The contest badge is calculated based on the contest rating.

For LeetCoders with rating >=1600, If you are in the top 5% of the contest rating, you’ll get the “Guardian” badge.

If you are in the top 25% of the contest rating, you’ll get the “Knight” badge.

Level	Proportion	Badge	Rating
LV3	5\%	Guardian	≥2228.90
LV2	20\%	Knight	≥1842.73
LV1	75\%	-	-	-

For top 10 users (excluding LCCN users), your LeetCode ID will be colored orange on the ranking board. You'll also have the honor with you when you post/comment under discuss.

Rating Predictor

If you want to estimate your score changes after the contest ends, you can visit the website LeetCode Contest Rating Predictor.

Past Contests

Weekly Contest 398

• 3151. Special Array I
• 3152. Special Array II
• 3153. Sum of Digit Differences of All Pairs
• 3154. Find Number of Ways to Reach the K-th Stair

Weekly Contest 397

• 3146. Permutation Difference between Two Strings
• 3147. Taking Maximum Energy From the Mystic Dungeon
• 3148. Maximum Difference Score in a Grid
• 3149. Find the Minimum Cost Array Permutation

Biweekly Contest 130

• 3142. Check if Grid Satisfies Conditions
• 3143. Maximum Points Inside the Square
• 3144. Minimum Substring Partition of Equal Character Frequency
• 3145. Find Products of Elements of Big Array

Weekly Contest 396

• 3136. Valid Word
• 3137. Minimum Number of Operations to Make Word K-Periodic
• 3138. Minimum Length of Anagram Concatenation
• 3139. Minimum Cost to Equalize Array

Weekly Contest 395

• 3131. Find the Integer Added to Array I
• 3132. Find the Integer Added to Array II
• 3133. Minimum Array End
• 3134. Find the Median of the Uniqueness Array

Biweekly Contest 129

• 3127. Make a Square with the Same Color
• 3128. Right Triangles
• 3129. Find All Possible Stable Binary Arrays I
• 3130. Find All Possible Stable Binary Arrays II

Weekly Contest 394

• 3120. Count the Number of Special Characters I
• 3121. Count the Number of Special Characters II
• 3122. Minimum Number of Operations to Satisfy Conditions
• 3123. Find Edges in Shortest Paths

Weekly Contest 393

• 3114. Latest Time You Can Obtain After Replacing Characters
• 3115. Maximum Prime Difference
• 3116. Kth Smallest Amount With Single Denomination Combination
• 3117. Minimum Sum of Values by Dividing Array

Biweekly Contest 128

• 3110. Score of a String
• 3111. Minimum Rectangles to Cover Points
• 3112. Minimum Time to Visit Disappearing Nodes
• 3113. Find the Number of Subarrays Where Boundary Elements Are Maximum

Weekly Contest 392

• 3105. Longest Strictly Increasing or Strictly Decreasing Subarray
• 3106. Lexicographically Smallest String After Operations With Constraint
• 3107. Minimum Operations to Make Median of Array Equal to K
• 3108. Minimum Cost Walk in Weighted Graph

Weekly Contest 391

• 3099. Harshad Number
• 3100. Water Bottles II
• 3101. Count Alternating Subarrays
• 3102. Minimize Manhattan Distances

Biweekly Contest 127

• 3095. Shortest Subarray With OR at Least K I
• 3096. Minimum Levels to Gain More Points
• 3097. Shortest Subarray With OR at Least K II
• 3098. Find the Sum of Subsequence Powers

Weekly Contest 390

• 3090. Maximum Length Substring With Two Occurrences
• 3091. Apply Operations to Make Sum of Array Greater Than or Equal to k
• 3092. Most Frequent IDs
• 3093. Longest Common Suffix Queries

Weekly Contest 389

• 3083. Existence of a Substring in a String and Its Reverse
• 3084. Count Substrings Starting and Ending with Given Character
• 3085. Minimum Deletions to Make String K-Special
• 3086. Minimum Moves to Pick K Ones

Biweekly Contest 126

• 3079. Find the Sum of Encrypted Integers
• 3080. Mark Elements on Array by Performing Queries
• 3081. Replace Question Marks in String to Minimize Its Value
• 3082. Find the Sum of the Power of All Subsequences

Weekly Contest 388

• 3074. Apple Redistribution into Boxes
• 3075. Maximize Happiness of Selected Children
• 3076. Shortest Uncommon Substring in an Array
• 3077. Maximum Strength of K Disjoint Subarrays

Weekly Contest 387

• 3069. Distribute Elements Into Two Arrays I
• 3070. Count Submatrices with Top-Left Element and Sum Less Than k
• 3071. Minimum Operations to Write the Letter Y on a Grid
• 3072. Distribute Elements Into Two Arrays II

Biweekly Contest 125

• 3065. Minimum Operations to Exceed Threshold Value I
• 3066. Minimum Operations to Exceed Threshold Value II
• 3067. Count Pairs of Connectable Servers in a Weighted Tree Network
• 3068. Find the Maximum Sum of Node Values

Weekly Contest 386

• 3046. Split the Array
• 3047. Find the Largest Area of Square Inside Two Rectangles
• 3048. Earliest Second to Mark Indices I
• 3049. Earliest Second to Mark Indices II

Weekly Contest 385

• 3042. Count Prefix and Suffix Pairs I
• 3043. Find the Length of the Longest Common Prefix
• 3044. Most Frequent Prime
• 3045. Count Prefix and Suffix Pairs II

Biweekly Contest 124

• 3038. Maximum Number of Operations With the Same Score I
• 3039. Apply Operations to Make String Empty
• 3040. Maximum Number of Operations With the Same Score II
• 3041. Maximize Consecutive Elements in an Array After Modification

Weekly Contest 384

• 3033. Modify the Matrix
• 3034. Number of Subarrays That Match a Pattern I
• 3035. Maximum Palindromes After Operations
• 3036. Number of Subarrays That Match a Pattern II

Weekly Contest 383

• 3028. Ant on the Boundary
• 3029. Minimum Time to Revert Word to Initial State I
• 3030. Find the Grid of Region Average
• 3031. Minimum Time to Revert Word to Initial State II

Biweekly Contest 123

• 3024. Type of Triangle
• 3025. Find the Number of Ways to Place People I
• 3026. Maximum Good Subarray Sum
• 3027. Find the Number of Ways to Place People II

Weekly Contest 382

• 3019. Number of Changing Keys
• 3020. Find the Maximum Number of Elements in Subset
• 3021. Alice and Bob Playing Flower Game
• 3022. Minimize OR of Remaining Elements Using Operations

Weekly Contest 381

• 3014. Minimum Number of Pushes to Type Word I
• 3015. Count the Number of Houses at a Certain Distance I
• 3016. Minimum Number of Pushes to Type Word II
• 3017. Count the Number of Houses at a Certain Distance II

Biweekly Contest 122

• 3010. Divide an Array Into Subarrays With Minimum Cost I
• 3011. Find if Array Can Be Sorted
• 3012. Minimize Length of Array Using Operations
• 3013. Divide an Array Into Subarrays With Minimum Cost II

Weekly Contest 380

• 3005. Count Elements With Maximum Frequency
• 3006. Find Beautiful Indices in the Given Array I
• 3007. Maximum Number That Sum of the Prices Is Less Than or Equal to K
• 3008. Find Beautiful Indices in the Given Array II

Weekly Contest 379

• 3000. Maximum Area of Longest Diagonal Rectangle
• 3001. Minimum Moves to Capture The Queen
• 3002. Maximum Size of a Set After Removals
• 3003. Maximize the Number of Partitions After Operations

Biweekly Contest 121

• 2996. Smallest Missing Integer Greater Than Sequential Prefix Sum
• 2997. Minimum Number of Operations to Make Array XOR Equal to K
• 2998. Minimum Number of Operations to Make X and Y Equal
• 2999. Count the Number of Powerful Integers

Weekly Contest 378

• 2980. Check if Bitwise OR Has Trailing Zeros
• 2981. Find Longest Special Substring That Occurs Thrice I
• 2982. Find Longest Special Substring That Occurs Thrice II
• 2983. Palindrome Rearrangement Queries

Weekly Contest 377

• 2974. Minimum Number Game
• 2975. Maximum Square Area by Removing Fences From a Field
• 2976. Minimum Cost to Convert String I
• 2977. Minimum Cost to Convert String II

Biweekly Contest 120

• 2970. Count the Number of Incremovable Subarrays I
• 2971. Find Polygon With the Largest Perimeter
• 2972. Count the Number of Incremovable Subarrays II
• 2973. Find Number of Coins to Place in Tree Nodes

Weekly Contest 376

• 2965. Find Missing and Repeated Values
• 2966. Divide Array Into Arrays With Max Difference
• 2967. Minimum Cost to Make Array Equalindromic
• 2968. Apply Operations to Maximize Frequency Score

Weekly Contest 375

• 2960. Count Tested Devices After Test Operations
• 2961. Double Modular Exponentiation
• 2962. Count Subarrays Where Max Element Appears at Least K Times
• 2963. Count the Number of Good Partitions

Biweekly Contest 119

• 2956. Find Common Elements Between Two Arrays
• 2957. Remove Adjacent Almost-Equal Characters
• 2958. Length of Longest Subarray With at Most K Frequency
• 2959. Number of Possible Sets of Closing Branches

Weekly Contest 374

• 2951. Find the Peaks
• 2952. Minimum Number of Coins to be Added
• 2953. Count Complete Substrings
• 2954. Count the Number of Infection Sequences

Weekly Contest 373

• 2946. Matrix Similarity After Cyclic Shifts
• 2947. Count Beautiful Substrings I
• 2948. Make Lexicographically Smallest Array by Swapping Elements
• 2949. Count Beautiful Substrings II

Biweekly Contest 118

• 2942. Find Words Containing Character
• 2943. Maximize Area of Square Hole in Grid
• 2944. Minimum Number of Coins for Fruits
• 2945. Find Maximum Non-decreasing Array Length

Weekly Contest 372

• 2937. Make Three Strings Equal
• 2938. Separate Black and White Balls
• 2939. Maximum Xor Product
• 2940. Find Building Where Alice and Bob Can Meet

Weekly Contest 371

• 2932. Maximum Strong Pair XOR I
• 2933. High-Access Employees
• 2934. Minimum Operations to Maximize Last Elements in Arrays
• 2935. Maximum Strong Pair XOR II

Biweekly Contest 117

• 2928. Distribute Candies Among Children I
• 2929. Distribute Candies Among Children II
• 2930. Number of Strings Which Can Be Rearranged to Contain Substring
• 2931. Maximum Spending After Buying Items

Weekly Contest 370

• 2923. Find Champion I
• 2924. Find Champion II
• 2925. Maximum Score After Applying Operations on a Tree
• 2926. Maximum Balanced Subsequence Sum

Weekly Contest 369

• 2917. Find the K-or of an Array
• 2918. Minimum Equal Sum of Two Arrays After Replacing Zeros
• 2919. Minimum Increment Operations to Make Array Beautiful
• 2920. Maximum Points After Collecting Coins From All Nodes

Biweekly Contest 116

• 2913. Subarrays Distinct Element Sum of Squares I
• 2914. Minimum Number of Changes to Make Binary String Beautiful
• 2915. Length of the Longest Subsequence That Sums to Target
• 2916. Subarrays Distinct Element Sum of Squares II

Weekly Contest 368

• 2908. Minimum Sum of Mountain Triplets I
• 2909. Minimum Sum of Mountain Triplets II
• 2910. Minimum Number of Groups to Create a Valid Assignment
• 2911. Minimum Changes to Make K Semi-palindromes

Weekly Contest 367

• 2903. Find Indices With Index and Value Difference I
• 2904. Shortest and Lexicographically Smallest Beautiful String
• 2905. Find Indices With Index and Value Difference II
• 2906. Construct Product Matrix

Biweekly Contest 115

• 2899. Last Visited Integers
• 2900. Longest Unequal Adjacent Groups Subsequence I
• 2901. Longest Unequal Adjacent Groups Subsequence II
• 2902. Count of Sub-Multisets With Bounded Sum

Weekly Contest 366

• 2894. Divisible and Non-divisible Sums Difference
• 2895. Minimum Processing Time
• 2896. Apply Operations to Make Two Strings Equal
• 2897. Apply Operations on Array to Maximize Sum of Squares

Weekly Contest 365

• 2873. Maximum Value of an Ordered Triplet I
• 2874. Maximum Value of an Ordered Triplet II
• 2875. Minimum Size Subarray in Infinite Array
• 2876. Count Visited Nodes in a Directed Graph

Biweekly Contest 114

• 2869. Minimum Operations to Collect Elements
• 2870. Minimum Number of Operations to Make Array Empty
• 2871. Split Array Into Maximum Number of Subarrays
• 2872. Maximum Number of K-Divisible Components

Weekly Contest 364

• 2864. Maximum Odd Binary Number
• 2865. Beautiful Towers I
• 2866. Beautiful Towers II
• 2867. Count Valid Paths in a Tree

Weekly Contest 363

• 2859. Sum of Values at Indices With K Set Bits
• 2860. Happy Students
• 2861. Maximum Number of Alloys
• 2862. Maximum Element-Sum of a Complete Subset of Indices

Biweekly Contest 113

• 2855. Minimum Right Shifts to Sort the Array
• 2856. Minimum Array Length After Pair Removals
• 2857. Count Pairs of Points With Distance k
• 2858. Minimum Edge Reversals So Every Node Is Reachable

Weekly Contest 362

• 2848. Points That Intersect With Cars
• 2849. Determine if a Cell Is Reachable at a Given Time
• 2850. Minimum Moves to Spread Stones Over Grid
• 2851. String Transformation

Weekly Contest 361

• 2843. Count Symmetric Integers
• 2844. Minimum Operations to Make a Special Number
• 2845. Count of Interesting Subarrays
• 2846. Minimum Edge Weight Equilibrium Queries in a Tree

Biweekly Contest 112

• 2839. Check if Strings Can be Made Equal With Operations I
• 2840. Check if Strings Can be Made Equal With Operations II
• 2841. Maximum Sum of Almost Unique Subarray
• 2842. Count K-Subsequences of a String With Maximum Beauty

Weekly Contest 360

• 2833. Furthest Point From Origin
• 2834. Find the Minimum Possible Sum of a Beautiful Array
• 2835. Minimum Operations to Form Subsequence With Target Sum
• 2836. Maximize Value of Function in a Ball Passing Game

Weekly Contest 359

• 2828. Check if a String Is an Acronym of Words
• 2829. Determine the Minimum Sum of a k-avoiding Array
• 2830. Maximize the Profit as the Salesman
• 2831. Find the Longest Equal Subarray

Biweekly Contest 111

• 2824. Count Pairs Whose Sum is Less than Target
• 2825. Make String a Subsequence Using Cyclic Increments
• 2826. Sorting Three Groups
• 2827. Number of Beautiful Integers in the Range

Weekly Contest 358

• 2815. Max Pair Sum in an Array
• 2816. Double a Number Represented as a Linked List
• 2817. Minimum Absolute Difference Between Elements With Constraint
• 2818. Apply Operations to Maximize Score

Weekly Contest 357

• 2810. Faulty Keyboard
• 2811. Check if it is Possible to Split Array
• 2812. Find the Safest Path in a Grid
• 2813. Maximum Elegance of a K-Length Subsequence

Biweekly Contest 110

• 2806. Account Balance After Rounded Purchase
• 2807. Insert Greatest Common Divisors in Linked List
• 2808. Minimum Seconds to Equalize a Circular Array
• 2809. Minimum Time to Make Array Sum At Most x

Weekly Contest 356

• 2798. Number of Employees Who Met the Target
• 2799. Count Complete Subarrays in an Array
• 2800. Shortest String That Contains Three Strings
• 2801. Count Stepping Numbers in Range

Weekly Contest 355

• 2788. Split Strings by Separator
• 2789. Largest Element in an Array after Merge Operations
• 2790. Maximum Number of Groups With Increasing Length
• 2791. Count Paths That Can Form a Palindrome in a Tree

Biweekly Contest 109

• 2784. Check if Array is Good
• 2785. Sort Vowels in a String
• 2786. Visit Array Positions to Maximize Score
• 2787. Ways to Express an Integer as Sum of Powers

Weekly Contest 354

• 2778. Sum of Squares of Special Elements
• 2779. Maximum Beauty of an Array After Applying Operation
• 2780. Minimum Index of a Valid Split
• 2781. Length of the Longest Valid Substring

Weekly Contest 353

• 2769. Find the Maximum Achievable Number
• 2770. Maximum Number of Jumps to Reach the Last Index
• 2771. Longest Non-decreasing Subarray From Two Arrays
• 2772. Apply Operations to Make All Array Elements Equal to Zero

Biweekly Contest 108

• 2765. Longest Alternating Subarray
• 2766. Relocate Marbles
• 2767. Partition String Into Minimum Beautiful Substrings
• 2768. Number of Black Blocks

Weekly Contest 352

• 2760. Longest Even Odd Subarray With Threshold
• 2761. Prime Pairs With Target Sum
• 2762. Continuous Subarrays
• 2763. Sum of Imbalance Numbers of All Subarrays

Weekly Contest 351

• 2748. Number of Beautiful Pairs
• 2749. Minimum Operations to Make the Integer Zero
• 2750. Ways to Split Array Into Good Subarrays
• 2751. Robot Collisions

Biweekly Contest 107

• 2744. Find Maximum Number of String Pairs
• 2745. Construct the Longest New String
• 2746. Decremental String Concatenation
• 2747. Count Zero Request Servers

Weekly Contest 350

• 2739. Total Distance Traveled
• 2740. Find the Value of the Partition
• 2741. Special Permutations
• 2742. Painting the Walls

Weekly Contest 349

• 2733. Neither Minimum nor Maximum
• 2734. Lexicographically Smallest String After Substring Operation
• 2735. Collecting Chocolates
• 2736. Maximum Sum Queries

Biweekly Contest 106

• 2729. Check if The Number is Fascinating
• 2730. Find the Longest Semi-Repetitive Substring
• 2731. Movement of Robots
• 2732. Find a Good Subset of the Matrix

Weekly Contest 348

• 2716. Minimize String Length
• 2717. Semi-Ordered Permutation
• 2718. Sum of Matrix After Queries
• 2719. Count of Integers

Weekly Contest 347

• 2710. Remove Trailing Zeros From a String
• 2711. Difference of Number of Distinct Values on Diagonals
• 2712. Minimum Cost to Make All Characters Equal
• 2713. Maximum Strictly Increasing Cells in a Matrix

Biweekly Contest 105

• 2706. Buy Two Chocolates
• 2707. Extra Characters in a String
• 2708. Maximum Strength of a Group
• 2709. Greatest Common Divisor Traversal

Weekly Contest 346

• 2696. Minimum String Length After Removing Substrings
• 2697. Lexicographically Smallest Palindrome
• 2698. Find the Punishment Number of an Integer
• 2699. Modify Graph Edge Weights

Weekly Contest 345

• 2682. Find the Losers of the Circular Game
• 2683. Neighboring Bitwise XOR
• 2684. Maximum Number of Moves in a Grid
• 2685. Count the Number of Complete Components

Biweekly Contest 104

• 2678. Number of Senior Citizens
• 2679. Sum in a Matrix
• 2680. Maximum OR
• 2681. Power of Heroes

Weekly Contest 344

• 2670. Find the Distinct Difference Array
• 2671. Frequency Tracker
• 2672. Number of Adjacent Elements With the Same Color
• 2673. Make Costs of Paths Equal in a Binary Tree

Weekly Contest 343

• 2660. Determine the Winner of a Bowling Game
• 2661. First Completely Painted Row or Column
• 2662. Minimum Cost of a Path With Special Roads
• 2663. Lexicographically Smallest Beautiful String

Biweekly Contest 103

• 2656. Maximum Sum With Exactly K Elements
• 2657. Find the Prefix Common Array of Two Arrays
• 2658. Maximum Number of Fish in a Grid
• 2659. Make Array Empty

Weekly Contest 342

• 2651. Calculate Delayed Arrival Time
• 2652. Sum Multiples
• 2653. Sliding Subarray Beauty
• 2654. Minimum Number of Operations to Make All Array Elements Equal to 1

Weekly Contest 341

• 2643. Row With Maximum Ones
• 2644. Find the Maximum Divisibility Score
• 2645. Minimum Additions to Make Valid String
• 2646. Minimize the Total Price of the Trips

Biweekly Contest 102

• 2639. Find the Width of Columns of a Grid
• 2640. Find the Score of All Prefixes of an Array
• 2641. Cousins in Binary Tree II
• 2642. Design Graph With Shortest Path Calculator

Weekly Contest 340

• 2614. Prime In Diagonal
• 2615. Sum of Distances
• 2616. Minimize the Maximum Difference of Pairs
• 2617. Minimum Number of Visited Cells in a Grid

Weekly Contest 339

• 2609. Find the Longest Balanced Substring of a Binary String
• 2610. Convert an Array Into a 2D Array With Conditions
• 2611. Mice and Cheese
• 2612. Minimum Reverse Operations

Biweekly Contest 101

• 2605. Form Smallest Number From Two Digit Arrays
• 2606. Find the Substring With Maximum Cost
• 2607. Make K-Subarray Sums Equal
• 2608. Shortest Cycle in a Graph

Weekly Contest 338

• 2600. K Items With the Maximum Sum
• 2601. Prime Subtraction Operation
• 2602. Minimum Operations to Make All Array Elements Equal
• 2603. Collect Coins in a Tree

Weekly Contest 337

• 2595. Number of Even and Odd Bits
• 2596. Check Knight Tour Configuration
• 2597. The Number of Beautiful Subsets
• 2598. Smallest Missing Non-negative Integer After Operations

Biweekly Contest 100

• 2591. Distribute Money to Maximum Children
• 2592. Maximize Greatness of an Array
• 2593. Find Score of an Array After Marking All Elements
• 2594. Minimum Time to Repair Cars

Weekly Contest 336

• 2586. Count the Number of Vowel Strings in Range
• 2587. Rearrange Array to Maximize Prefix Score
• 2588. Count the Number of Beautiful Subarrays
• 2589. Minimum Time to Complete All Tasks

Weekly Contest 335

• 2582. Pass the Pillow
• 2583. Kth Largest Sum in a Binary Tree
• 2584. Split the Array to Make Coprime Products
• 2585. Number of Ways to Earn Points

Biweekly Contest 99

• 2578. Split With Minimum Sum
• 2579. Count Total Number of Colored Cells
• 2580. Count Ways to Group Overlapping Ranges
• 2581. Count Number of Possible Root Nodes

Weekly Contest 334

• 2574. Left and Right Sum Differences
• 2575. Find the Divisibility Array of a String
• 2576. Find the Maximum Number of Marked Indices
• 2577. Minimum Time to Visit a Cell In a Grid

Weekly Contest 333

• 2570. Merge Two 2D Arrays by Summing Values
• 2571. Minimum Operations to Reduce an Integer to 0
• 2572. Count the Number of Square-Free Subsets
• 2573. Find the String with LCP

Biweekly Contest 98

• 2566. Maximum Difference by Remapping a Digit
• 2567. Minimum Score by Changing Two Elements
• 2568. Minimum Impossible OR
• 2569. Handling Sum Queries After Update

Weekly Contest 332

• 2562. Find the Array Concatenation Value
• 2563. Count the Number of Fair Pairs
• 2564. Substring XOR Queries
• 2565. Subsequence With the Minimum Score

Weekly Contest 331

• 2558. Take Gifts From the Richest Pile
• 2559. Count Vowel Strings in Ranges
• 2560. House Robber IV
• 2561. Rearranging Fruits

Biweekly Contest 97

• 2553. Separate the Digits in an Array
• 2554. Maximum Number of Integers to Choose From a Range I
• 2555. Maximize Win From Two Segments
• 2556. Disconnect Path in a Binary Matrix by at Most One Flip

Weekly Contest 330

• 2549. Count Distinct Numbers on Board
• 2550. Count Collisions of Monkeys on a Polygon
• 2551. Put Marbles in Bags
• 2552. Count Increasing Quadruplets

Weekly Contest 329

• 2544. Alternating Digit Sum
• 2545. Sort the Students by Their Kth Score
• 2546. Apply Bitwise Operations to Make Strings Equal
• 2547. Minimum Cost to Split an Array

Biweekly Contest 96

• 2540. Minimum Common Value
• 2541. Minimum Operations to Make Array Equal II
• 2542. Maximum Subsequence Score
• 2543. Check if Point Is Reachable

Weekly Contest 328

• 2535. Difference Between Element Sum and Digit Sum of an Array
• 2536. Increment Submatrices by One
• 2537. Count the Number of Good Subarrays
• 2538. Difference Between Maximum and Minimum Price Sum

Weekly Contest 327

• 2529. Maximum Count of Positive Integer and Negative Integer
• 2530. Maximal Score After Applying K Operations
• 2531. Make Number of Distinct Characters Equal
• 2532. Time to Cross a Bridge

Biweekly Contest 95

• 2525. Categorize Box According to Criteria
• 2526. Find Consecutive Integers from a Data Stream
• 2527. Find Xor-Beauty of Array
• 2528. Maximize the Minimum Powered City

Weekly Contest 326

• 2520. Count the Digits That Divide a Number
• 2521. Distinct Prime Factors of Product of Array
• 2522. Partition String Into Substrings With Values at Most K
• 2523. Closest Prime Numbers in Range

Weekly Contest 325

• 2515. Shortest Distance to Target String in a Circular Array
• 2516. Take K of Each Character From Left and Right
• 2517. Maximum Tastiness of Candy Basket
• 2518. Number of Great Partitions

Biweekly Contest 94

• 2511. Maximum Enemy Forts That Can Be Captured
• 2512. Reward Top K Students
• 2513. Minimize the Maximum of Two Arrays
• 2514. Count Anagrams

Weekly Contest 324

• 2506. Count Pairs Of Similar Strings
• 2507. Smallest Value After Replacing With Sum of Prime Factors
• 2508. Add Edges to Make Degrees of All Nodes Even
• 2509. Cycle Length Queries in a Tree

Weekly Contest 323

• 2500. Delete Greatest Value in Each Row
• 2501. Longest Square Streak in an Array
• 2502. Design Memory Allocator
• 2503. Maximum Number of Points From Grid Queries

Biweekly Contest 93

• 2496. Maximum Value of a String in an Array
• 2497. Maximum Star Sum of a Graph
• 2498. Frog Jump II
• 2499. Minimum Total Cost to Make Arrays Unequal

Weekly Contest 322

• 2490. Circular Sentence
• 2491. Divide Players Into Teams of Equal Skill
• 2492. Minimum Score of a Path Between Two Cities
• 2493. Divide Nodes Into the Maximum Number of Groups

Weekly Contest 321

• 2485. Find the Pivot Integer
• 2486. Append Characters to String to Make Subsequence
• 2487. Remove Nodes From Linked List
• 2488. Count Subarrays With Median K

Biweekly Contest 92

• 2481. Minimum Cuts to Divide a Circle
• 2482. Difference Between Ones and Zeros in Row and Column
• 2483. Minimum Penalty for a Shop
• 2484. Count Palindromic Subsequences

Weekly Contest 320

• 2475. Number of Unequal Triplets in Array
• 2476. Closest Nodes Queries in a Binary Search Tree
• 2477. Minimum Fuel Cost to Report to the Capital
• 2478. Number of Beautiful Partitions

Weekly Contest 319

• 2469. Convert the Temperature
• 2470. Number of Subarrays With LCM Equal to K
• 2471. Minimum Number of Operations to Sort a Binary Tree by Level
• 2472. Maximum Number of Non-overlapping Palindrome Substrings

Biweekly Contest 91

• 2465. Number of Distinct Averages
• 2466. Count Ways To Build Good Strings
• 2467. Most Profitable Path in a Tree
• 2468. Split Message Based on Limit

Weekly Contest 318

• 2460. Apply Operations to an Array
• 2461. Maximum Sum of Distinct Subarrays With Length K
• 2462. Total Cost to Hire K Workers
• 2463. Minimum Total Distance Traveled

Weekly Contest 317

• 2455. Average Value of Even Numbers That Are Divisible by Three
• 2456. Most Popular Video Creator
• 2457. Minimum Addition to Make Integer Beautiful
• 2458. Height of Binary Tree After Subtree Removal Queries

Biweekly Contest 90

• 2451. Odd String Difference
• 2452. Words Within Two Edits of Dictionary
• 2453. Destroy Sequential Targets
• 2454. Next Greater Element IV

Weekly Contest 316

• 2446. Determine if Two Events Have Conflict
• 2447. Number of Subarrays With GCD Equal to K
• 2448. Minimum Cost to Make Array Equal
• 2449. Minimum Number of Operations to Make Arrays Similar

Weekly Contest 315

• 2441. Largest Positive Integer That Exists With Its Negative
• 2442. Count Number of Distinct Integers After Reverse Operations
• 2443. Sum of Number and Its Reverse
• 2444. Count Subarrays With Fixed Bounds

Biweekly Contest 89

• 2437. Number of Valid Clock Times
• 2438. Range Product Queries of Powers
• 2439. Minimize Maximum of Array
• 2440. Create Components With Same Value

Weekly Contest 314

• 2432. The Employee That Worked on the Longest Task
• 2433. Find The Original Array of Prefix Xor
• 2434. Using a Robot to Print the Lexicographically Smallest String
• 2435. Paths in Matrix Whose Sum Is Divisible by K

Weekly Contest 313

• 2427. Number of Common Factors
• 2428. Maximum Sum of an Hourglass
• 2429. Minimize XOR
• 2430. Maximum Deletions on a String

Biweekly Contest 88

• 2423. Remove Letter To Equalize Frequency
• 2424. Longest Uploaded Prefix
• 2425. Bitwise XOR of All Pairings
• 2426. Number of Pairs Satisfying Inequality

Weekly Contest 312

• 2418. Sort the People
• 2419. Longest Subarray With Maximum Bitwise AND
• 2420. Find All Good Indices
• 2421. Number of Good Paths

Weekly Contest 311

• 2413. Smallest Even Multiple
• 2414. Length of the Longest Alphabetical Continuous Substring
• 2415. Reverse Odd Levels of Binary Tree
• 2416. Sum of Prefix Scores of Strings

Biweekly Contest 87

• 2409. Count Days Spent Together
• 2410. Maximum Matching of Players With Trainers
• 2411. Smallest Subarrays With Maximum Bitwise OR
• 2412. Minimum Money Required Before Transactions

Weekly Contest 310

• 2404. Most Frequent Even Element
• 2405. Optimal Partition of String
• 2406. Divide Intervals Into Minimum Number of Groups
• 2407. Longest Increasing Subsequence II

Weekly Contest 309

• 2399. Check Distances Between Same Letters
• 2400. Number of Ways to Reach a Position After Exactly k Steps
• 2401. Longest Nice Subarray
• 2402. Meeting Rooms III

Biweekly Contest 86

• 2395. Find Subarrays With Equal Sum
• 2396. Strictly Palindromic Number
• 2397. Maximum Rows Covered by Columns
• 2398. Maximum Number of Robots Within Budget

Weekly Contest 308

• 2389. Longest Subsequence With Limited Sum
• 2390. Removing Stars From a String
• 2391. Minimum Amount of Time to Collect Garbage
• 2392. Build a Matrix With Conditions

Weekly Contest 307

• 2383. Minimum Hours of Training to Win a Competition
• 2384. Largest Palindromic Number
• 2385. Amount of Time for Binary Tree to Be Infected
• 2386. Find the K-Sum of an Array

Biweekly Contest 85

• 2379. Minimum Recolors to Get K Consecutive Black Blocks
• 2380. Time Needed to Rearrange a Binary String
• 2381. Shifting Letters II
• 2382. Maximum Segment Sum After Removals

Weekly Contest 306

• 2373. Largest Local Values in a Matrix
• 2374. Node With Highest Edge Score
• 2375. Construct Smallest Number From DI String
• 2376. Count Special Integers

Weekly Contest 305

• 2367. Number of Arithmetic Triplets
• 2368. Reachable Nodes With Restrictions
• 2369. Check if There is a Valid Partition For The Array
• 2370. Longest Ideal Subsequence

Biweekly Contest 84

• 2363. Merge Similar Items
• 2364. Count Number of Bad Pairs
• 2365. Task Scheduler II
• 2366. Minimum Replacements to Sort the Array

Weekly Contest 304

• 2357. Make Array Zero by Subtracting Equal Amounts
• 2358. Maximum Number of Groups Entering a Competition
• 2359. Find Closest Node to Given Two Nodes
• 2360. Longest Cycle in a Graph

Weekly Contest 303

• 2351. First Letter to Appear Twice
• 2352. Equal Row and Column Pairs
• 2353. Design a Food Rating System
• 2354. Number of Excellent Pairs

Biweekly Contest 83

• 2347. Best Poker Hand
• 2348. Number of Zero-Filled Subarrays
• 2349. Design a Number Container System
• 2350. Shortest Impossible Sequence of Rolls

Weekly Contest 302

• 2341. Maximum Number of Pairs in Array
• 2342. Max Sum of a Pair With Equal Sum of Digits
• 2343. Query Kth Smallest Trimmed Number
• 2344. Minimum Deletions to Make Array Divisible

Weekly Contest 301

• 2335. Minimum Amount of Time to Fill Cups
• 2336. Smallest Number in Infinite Set
• 2337. Move Pieces to Obtain a String
• 2338. Count the Number of Ideal Arrays

Biweekly Contest 82

• 2331. Evaluate Boolean Binary Tree
• 2332. The Latest Time to Catch a Bus
• 2333. Minimum Sum of Squared Difference
• 2334. Subarray With Elements Greater Than Varying Threshold

Weekly Contest 300

• 2325. Decode the Message
• 2326. Spiral Matrix IV
• 2327. Number of People Aware of a Secret
• 2328. Number of Increasing Paths in a Grid

Weekly Contest 299

• 2319. Check if Matrix Is X-Matrix
• 2320. Count Number of Ways to Place Houses
• 2321. Maximum Score Of Spliced Array
• 2322. Minimum Score After Removals on a Tree

Biweekly Contest 81

• 2315. Count Asterisks
• 2316. Count Unreachable Pairs of Nodes in an Undirected Graph
• 2317. Maximum XOR After Operations
• 2318. Number of Distinct Roll Sequences

Weekly Contest 298

• 2309. Greatest English Letter in Upper and Lower Case
• 2310. Sum of Numbers With Units Digit K
• 2311. Longest Binary Subsequence Less Than or Equal to K
• 2312. Selling Pieces of Wood

Weekly Contest 297

• 2303. Calculate Amount Paid in Taxes
• 2304. Minimum Path Cost in a Grid
• 2305. Fair Distribution of Cookies
• 2306. Naming a Company

Biweekly Contest 80

• 2299. Strong Password Checker II
• 2300. Successful Pairs of Spells and Potions
• 2301. Match Substring After Replacement
• 2302. Count Subarrays With Score Less Than K

Weekly Contest 296

• 2293. Min Max Game
• 2294. Partition Array Such That Maximum Difference Is K
• 2295. Replace Elements in an Array
• 2296. Design a Text Editor

Weekly Contest 295

• 2287. Rearrange Characters to Make Target String
• 2288. Apply Discount to Prices
• 2289. Steps to Make Array Non-decreasing
• 2290. Minimum Obstacle Removal to Reach Corner

Biweekly Contest 79

• 2283. Check if Number Has Equal Digit Count and Digit Value
• 2284. Sender With Largest Word Count
• 2285. Maximum Total Importance of Roads
• 2286. Booking Concert Tickets in Groups

Weekly Contest 294

• 2278. Percentage of Letter in String
• 2279. Maximum Bags With Full Capacity of Rocks
• 2280. Minimum Lines to Represent a Line Chart
• 2281. Sum of Total Strength of Wizards

Weekly Contest 293

• 2273. Find Resultant Array After Removing Anagrams
• 2274. Maximum Consecutive Floors Without Special Floors
• 2275. Largest Combination With Bitwise AND Greater Than Zero
• 2276. Count Integers in Intervals

Biweekly Contest 78

• 2269. Find the K-Beauty of a Number
• 2270. Number of Ways to Split Array
• 2271. Maximum White Tiles Covered by a Carpet
• 2272. Substring With Largest Variance

Weekly Contest 292

• 2264. Largest 3-Same-Digit Number in String
• 2265. Count Nodes Equal to Average of Subtree
• 2266. Count Number of Texts
• 2267. Check if There Is a Valid Parentheses String Path

Weekly Contest 291

• 2259. Remove Digit From Number to Maximize Result
• 2260. Minimum Consecutive Cards to Pick Up
• 2261. K Divisible Elements Subarrays
• 2262. Total Appeal of A String

Biweekly Contest 77

• 2255. Count Prefixes of a Given String
• 2256. Minimum Average Difference
• 2257. Count Unguarded Cells in the Grid
• 2258. Escape the Spreading Fire

Weekly Contest 290

• 2248. Intersection of Multiple Arrays
• 2249. Count Lattice Points Inside a Circle
• 2250. Count Number of Rectangles Containing Each Point
• 2251. Number of Flowers in Full Bloom

Weekly Contest 289

• 2243. Calculate Digit Sum of a String
• 2244. Minimum Rounds to Complete All Tasks
• 2245. Maximum Trailing Zeros in a Cornered Path
• 2246. Longest Path With Different Adjacent Characters

Biweekly Contest 76

• 2239. Find Closest Number to Zero
• 2240. Number of Ways to Buy Pens and Pencils
• 2241. Design an ATM Machine
• 2242. Maximum Score of a Node Sequence

Weekly Contest 288

• 2231. Largest Number After Digit Swaps by Parity
• 2232. Minimize Result by Adding Parentheses to Expression
• 2233. Maximum Product After K Increments
• 2234. Maximum Total Beauty of the Gardens

Weekly Contest 287

• 2224. Minimum Number of Operations to Convert Time
• 2225. Find Players With Zero or One Losses
• 2226. Maximum Candies Allocated to K Children
• 2227. Encrypt and Decrypt Strings

Biweekly Contest 75

• 2220. Minimum Bit Flips to Convert Number
• 2221. Find Triangular Sum of an Array
• 2222. Number of Ways to Select Buildings
• 2223. Sum of Scores of Built Strings

Weekly Contest 286

• 2215. Find the Difference of Two Arrays
• 2216. Minimum Deletions to Make Array Beautiful
• 2217. Find Palindrome With Fixed Length
• 2218. Maximum Value of K Coins From Piles

Weekly Contest 285

• 2210. Count Hills and Valleys in an Array
• 2211. Count Collisions on a Road
• 2212. Maximum Points in an Archery Competition
• 2213. Longest Substring of One Repeating Character

Biweekly Contest 74

• 2206. Divide Array Into Equal Pairs
• 2207. Maximize Number of Subsequences in a String
• 2208. Minimum Operations to Halve Array Sum
• 2209. Minimum White Tiles After Covering With Carpets

Weekly Contest 284

• 2200. Find All K-Distant Indices in an Array
• 2201. Count Artifacts That Can Be Extracted
• 2202. Maximize the Topmost Element After K Moves
• 2203. Minimum Weighted Subgraph With the Required Paths

Weekly Contest 283

• 2194. Cells in a Range on an Excel Sheet
• 2195. Append K Integers With Minimal Sum
• 2196. Create Binary Tree From Descriptions
• 2197. Replace Non-Coprime Numbers in Array

Biweekly Contest 73

• 2190. Most Frequent Number Following Key In an Array
• 2191. Sort the Jumbled Numbers
• 2192. All Ancestors of a Node in a Directed Acyclic Graph
• 2193. Minimum Number of Moves to Make Palindrome

Weekly Contest 282

• 2185. Counting Words With a Given Prefix
• 2186. Minimum Number of Steps to Make Two Strings Anagram II
• 2187. Minimum Time to Complete Trips
• 2188. Minimum Time to Finish the Race

Weekly Contest 281

• 2180. Count Integers With Even Digit Sum
• 2181. Merge Nodes in Between Zeros
• 2182. Construct String With Repeat Limit
• 2183. Count Array Pairs Divisible by K

Biweekly Contest 72

• 2176. Count Equal and Divisible Pairs in an Array
• 2177. Find Three Consecutive Integers That Sum to a Given Number
• 2178. Maximum Split of Positive Even Integers
• 2179. Count Good Triplets in an Array

Weekly Contest 280

• 2169. Count Operations to Obtain Zero
• 2170. Minimum Operations to Make the Array Alternating
• 2171. Removing Minimum Number of Magic Beans
• 2172. Maximum AND Sum of Array

Weekly Contest 279

• 2164. Sort Even and Odd Indices Independently
• 2165. Smallest Value of the Rearranged Number
• 2166. Design Bitset
• 2167. Minimum Time to Remove All Cars Containing Illegal Goods

Biweekly Contest 71

• 2160. Minimum Sum of Four Digit Number After Splitting Digits
• 2161. Partition Array According to Given Pivot
• 2162. Minimum Cost to Set Cooking Time
• 2163. Minimum Difference in Sums After Removal of Elements

Weekly Contest 278

• 2154. Keep Multiplying Found Values by Two
• 2155. All Divisions With the Highest Score of a Binary Array
• 2156. Find Substring With Given Hash Value
• 2157. Groups of Strings

Weekly Contest 277

• 2148. Count Elements With Strictly Smaller and Greater Elements
• 2149. Rearrange Array Elements by Sign
• 2150. Find All Lonely Numbers in the Array
• 2151. Maximum Good People Based on Statements

Biweekly Contest 70

• 2144. Minimum Cost of Buying Candies With Discount
• 2145. Count the Hidden Sequences
• 2146. K Highest Ranked Items Within a Price Range
• 2147. Number of Ways to Divide a Long Corridor

Weekly Contest 276

• 2138. Divide a String Into Groups of Size k
• 2139. Minimum Moves to Reach Target Score
• 2140. Solving Questions With Brainpower
• 2141. Maximum Running Time of N Computers

Weekly Contest 275

• 2133. Check if Every Row and Column Contains All Numbers
• 2134. Minimum Swaps to Group All 1's Together II
• 2135. Count Words Obtained After Adding a Letter
• 2136. Earliest Possible Day of Full Bloom

Biweekly Contest 69

• 2129. Capitalize the Title
• 2130. Maximum Twin Sum of a Linked List
• 2131. Longest Palindrome by Concatenating Two Letter Words
• 2132. Stamping the Grid

Weekly Contest 274

• 2124. Check if All A's Appears Before All B's
• 2125. Number of Laser Beams in a Bank
• 2126. Destroying Asteroids
• 2127. Maximum Employees to Be Invited to a Meeting

Weekly Contest 273

• 2119. A Number After a Double Reversal
• 2120. Execution of All Suffix Instructions Staying in a Grid
• 2121. Intervals Between Identical Elements
• 2122. Recover the Original Array

Biweekly Contest 68

• 2114. Maximum Number of Words Found in Sentences
• 2115. Find All Possible Recipes from Given Supplies
• 2116. Check if a Parentheses String Can Be Valid
• 2117. Abbreviating the Product of a Range

Weekly Contest 272

• 2108. Find First Palindromic String in the Array
• 2109. Adding Spaces to a String
• 2110. Number of Smooth Descent Periods of a Stock
• 2111. Minimum Operations to Make the Array K-Increasing

Weekly Contest 271

• 2103. Rings and Rods
• 2104. Sum of Subarray Ranges
• 2105. Watering Plants II
• 2106. Maximum Fruits Harvested After at Most K Steps

Biweekly Contest 67

• 2099. Find Subsequence of Length K With the Largest Sum
• 2100. Find Good Days to Rob the Bank
• 2101. Detonate the Maximum Bombs
• 2102. Sequentially Ordinal Rank Tracker

Weekly Contest 270

• 2094. Finding 3-Digit Even Numbers
• 2095. Delete the Middle Node of a Linked List
• 2096. Step-By-Step Directions From a Binary Tree Node to Another
• 2097. Valid Arrangement of Pairs

Weekly Contest 269

• 2089. Find Target Indices After Sorting Array
• 2090. K Radius Subarray Averages
• 2091. Removing Minimum and Maximum From Array
• 2092. Find All People With Secret

Biweekly Contest 66

• 2085. Count Common Words With One Occurrence
• 2086. Minimum Number of Food Buckets to Feed the Hamsters
• 2087. Minimum Cost Homecoming of a Robot in a Grid
• 2088. Count Fertile Pyramids in a Land

Weekly Contest 268

• 2078. Two Furthest Houses With Different Colors
• 2079. Watering Plants
• 2080. Range Frequency Queries
• 2081. Sum of k-Mirror Numbers

Weekly Contest 267

• 2073. Time Needed to Buy Tickets
• 2074. Reverse Nodes in Even Length Groups
• 2075. Decode the Slanted Ciphertext
• 2076. Process Restricted Friend Requests

Biweekly Contest 65

• 2068. Check Whether Two Strings are Almost Equivalent
• 2069. Walking Robot Simulation II
• 2070. Most Beautiful Item for Each Query
• 2071. Maximum Number of Tasks You Can Assign

Weekly Contest 266

• 2062. Count Vowel Substrings of a String
• 2063. Vowels of All Substrings
• 2064. Minimized Maximum of Products Distributed to Any Store
• 2065. Maximum Path Quality of a Graph

Weekly Contest 265

• 2057. Smallest Index With Equal Value
• 2058. Find the Minimum and Maximum Number of Nodes Between Critical Points
• 2059. Minimum Operations to Convert Number
• 2060. Check if an Original String Exists Given Two Encoded Strings

Biweekly Contest 64

• 2053. Kth Distinct String in an Array
• 2054. Two Best Non-Overlapping Events
• 2055. Plates Between Candles
• 2056. Number of Valid Move Combinations On Chessboard

Weekly Contest 264

• 2047. Number of Valid Words in a Sentence
• 2048. Next Greater Numerically Balanced Number
• 2049. Count Nodes With the Highest Score
• 2050. Parallel Courses III

Weekly Contest 263

• 2042. Check if Numbers Are Ascending in a Sentence
• 2043. Simple Bank System
• 2044. Count Number of Maximum Bitwise-OR Subsets
• 2045. Second Minimum Time to Reach Destination

Biweekly Contest 63

• 2037. Minimum Number of Moves to Seat Everyone
• 2038. Remove Colored Pieces if Both Neighbors are the Same Color
• 2039. The Time When the Network Becomes Idle
• 2040. Kth Smallest Product of Two Sorted Arrays

Weekly Contest 262

• 2032. Two Out of Three
• 2033. Minimum Operations to Make a Uni-Value Grid
• 2034. Stock Price Fluctuation
• 2035. Partition Array Into Two Arrays to Minimize Sum Difference

Weekly Contest 261

• 2027. Minimum Moves to Convert String
• 2028. Find Missing Observations
• 2029. Stone Game IX
• 2030. Smallest K-Length Subsequence With Occurrences of a Letter

Biweekly Contest 62

• 2022. Convert 1D Array Into 2D Array
• 2023. Number of Pairs of Strings With Concatenation Equal to Target
• 2024. Maximize the Confusion of an Exam
• 2025. Maximum Number of Ways to Partition an Array

Weekly Contest 260

• 2016. Maximum Difference Between Increasing Elements
• 2017. Grid Game
• 2018. Check if Word Can Be Placed In Crossword
• 2019. The Score of Students Solving Math Expression

Weekly Contest 259

• 2011. Final Value of Variable After Performing Operations
• 2012. Sum of Beauty in the Array
• 2013. Detect Squares
• 2014. Longest Subsequence Repeated k Times

Biweekly Contest 61

• 2006. Count Number of Pairs With Absolute Difference K
• 2007. Find Original Array From Doubled Array
• 2008. Maximum Earnings From Taxi
• 2009. Minimum Number of Operations to Make Array Continuous

Weekly Contest 258

• 2000. Reverse Prefix of Word
• 2001. Number of Pairs of Interchangeable Rectangles
• 2002. Maximum Product of the Length of Two Palindromic Subsequences
• 2003. Smallest Missing Genetic Value in Each Subtree

Weekly Contest 257

• 1995. Count Special Quadruplets
• 1996. The Number of Weak Characters in the Game
• 1997. First Day Where You Have Been in All the Rooms
• 1998. GCD Sort of an Array

Biweekly Contest 60

• 1991. Find the Middle Index in Array
• 1992. Find All Groups of Farmland
• 1993. Operations on Tree
• 1994. The Number of Good Subsets

Weekly Contest 256

• 1984. Minimum Difference Between Highest and Lowest of K Scores
• 1985. Find the Kth Largest Integer in the Array
• 1986. Minimum Number of Work Sessions to Finish the Tasks
• 1987. Number of Unique Good Subsequences

Weekly Contest 255

• 1979. Find Greatest Common Divisor of Array
• 1980. Find Unique Binary String
• 1981. Minimize the Difference Between Target and Chosen Elements
• 1982. Find Array Given Subset Sums

Biweekly Contest 59

• 1974. Minimum Time to Type Word Using Special Typewriter
• 1975. Maximum Matrix Sum
• 1976. Number of Ways to Arrive at Destination
• 1977. Number of Ways to Separate Numbers

Weekly Contest 254

• 1967. Number of Strings That Appear as Substrings in Word
• 1968. Array With Elements Not Equal to Average of Neighbors
• 1969. Minimum Non-Zero Product of the Array Elements
• 1970. Last Day Where You Can Still Cross

Weekly Contest 253

• 1961. Check If String Is a Prefix of Array
• 1962. Remove Stones to Minimize the Total
• 1963. Minimum Number of Swaps to Make the String Balanced
• 1964. Find the Longest Valid Obstacle Course at Each Position

Biweekly Contest 58

• 1957. Delete Characters to Make Fancy String
• 1958. Check if Move is Legal
• 1959. Minimum Total Space Wasted With K Resizing Operations
• 1960. Maximum Product of the Length of Two Palindromic Substrings

Weekly Contest 252

• 1952. Three Divisors
• 1953. Maximum Number of Weeks for Which You Can Work
• 1954. Minimum Garden Perimeter to Collect Enough Apples
• 1955. Count Number of Special Subsequences

Weekly Contest 251

• 1945. Sum of Digits of String After Convert
• 1946. Largest Number After Mutating Substring
• 1947. Maximum Compatibility Score Sum
• 1948. Delete Duplicate Folders in System

Biweekly Contest 57

• 1941. Check if All Characters Have Equal Number of Occurrences
• 1942. The Number of the Smallest Unoccupied Chair
• 1943. Describe the Painting
• 1944. Number of Visible People in a Queue

Weekly Contest 250

• 1935. Maximum Number of Words You Can Type
• 1936. Add Minimum Number of Rungs
• 1937. Maximum Number of Points with Cost
• 1938. Maximum Genetic Difference Query

Weekly Contest 249

• 1929. Concatenation of Array
• 1930. Unique Length-3 Palindromic Subsequences
• 1931. Painting a Grid With Three Different Colors
• 1932. Merge BSTs to Create Single BST

Biweekly Contest 56

• 1925. Count Square Sum Triples
• 1926. Nearest Exit from Entrance in Maze
• 1927. Sum Game
• 1928. Minimum Cost to Reach Destination in Time

Weekly Contest 248

• 1920. Build Array from Permutation
• 1921. Eliminate Maximum Number of Monsters
• 1922. Count Good Numbers
• 1923. Longest Common Subpath

Weekly Contest 247

• 1913. Maximum Product Difference Between Two Pairs
• 1914. Cyclically Rotating a Grid
• 1915. Number of Wonderful Substrings
• 1916. Count Ways to Build Rooms in an Ant Colony

Biweekly Contest 55

• 1909. Remove One Element to Make the Array Strictly Increasing
• 1910. Remove All Occurrences of a Substring
• 1911. Maximum Alternating Subsequence Sum
• 1912. Design Movie Rental System

Weekly Contest 246

• 1903. Largest Odd Number in String
• 1904. The Number of Full Rounds You Have Played
• 1905. Count Sub Islands
• 1906. Minimum Absolute Difference Queries

Weekly Contest 245

• 1897. Redistribute Characters to Make All Strings Equal
• 1898. Maximum Number of Removable Characters
• 1899. Merge Triplets to Form Target Triplet
• 1900. The Earliest and Latest Rounds Where Players Compete

Biweekly Contest 54

• 1893. Check if All the Integers in a Range Are Covered
• 1894. Find the Student that Will Replace the Chalk
• 1895. Largest Magic Square
• 1896. Minimum Cost to Change the Final Value of Expression

Weekly Contest 244

• 1886. Determine Whether Matrix Can Be Obtained By Rotation
• 1887. Reduction Operations to Make the Array Elements Equal
• 1888. Minimum Number of Flips to Make the Binary String Alternating
• 1889. Minimum Space Wasted From Packaging

Weekly Contest 243

• 1880. Check if Word Equals Summation of Two Words
• 1881. Maximum Value after Insertion
• 1882. Process Tasks Using Servers
• 1883. Minimum Skips to Arrive at Meeting On Time

Biweekly Contest 53

• 1876. Substrings of Size Three with Distinct Characters
• 1877. Minimize Maximum Pair Sum in Array
• 1878. Get Biggest Three Rhombus Sums in a Grid
• 1879. Minimum XOR Sum of Two Arrays

Weekly Contest 242

• 1869. Longer Contiguous Segments of Ones than Zeros
• 1870. Minimum Speed to Arrive on Time
• 1871. Jump Game VII
• 1872. Stone Game VIII

Weekly Contest 241

• 1863. Sum of All Subset XOR Totals
• 1864. Minimum Number of Swaps to Make the Binary String Alternating
• 1865. Finding Pairs With a Certain Sum
• 1866. Number of Ways to Rearrange Sticks With K Sticks Visible

Biweekly Contest 52

• 1859. Sorting the Sentence
• 1860. Incremental Memory Leak
• 1861. Rotating the Box
• 1862. Sum of Floored Pairs

Weekly Contest 240

• 1854. Maximum Population Year
• 1855. Maximum Distance Between a Pair of Values
• 1856. Maximum Subarray Min-Product
• 1857. Largest Color Value in a Directed Graph

Weekly Contest 239

• 1848. Minimum Distance to the Target Element
• 1849. Splitting a String Into Descending Consecutive Values
• 1850. Minimum Adjacent Swaps to Reach the Kth Smallest Number
• 1851. Minimum Interval to Include Each Query

Biweekly Contest 51

• 1844. Replace All Digits with Characters
• 1845. Seat Reservation Manager
• 1846. Maximum Element After Decreasing and Rearranging
• 1847. Closest Room

Weekly Contest 238

• 1837. Sum of Digits in Base K
• 1838. Frequency of the Most Frequent Element
• 1839. Longest Substring Of All Vowels in Order
• 1840. Maximum Building Height

Weekly Contest 237

• 1832. Check if the Sentence Is Pangram
• 1833. Maximum Ice Cream Bars
• 1834. Single-Threaded CPU
• 1835. Find XOR Sum of All Pairs Bitwise AND

Biweekly Contest 50

• 1827. Minimum Operations to Make the Array Increasing
• 1828. Queries on Number of Points Inside a Circle
• 1829. Maximum XOR for Each Query
• 1830. Minimum Number of Operations to Make String Sorted

Weekly Contest 236

• 1822. Sign of the Product of an Array
• 1823. Find the Winner of the Circular Game
• 1824. Minimum Sideway Jumps
• 1825. Finding MK Average

Weekly Contest 235

• 1816. Truncate Sentence
• 1817. Finding the Users Active Minutes
• 1818. Minimum Absolute Sum Difference
• 1819. Number of Different Subsequences GCDs

Biweekly Contest 49

• 1812. Determine Color of a Chessboard Square
• 1813. Sentence Similarity III
• 1814. Count Nice Pairs in an Array
• 1815. Maximum Number of Groups Getting Fresh Donuts

Weekly Contest 234

• 1805. Number of Different Integers in a String
• 1806. Minimum Number of Operations to Reinitialize a Permutation
• 1807. Evaluate the Bracket Pairs of a String
• 1808. Maximize Number of Nice Divisors

Weekly Contest 233

• 1800. Maximum Ascending Subarray Sum
• 1801. Number of Orders in the Backlog
• 1802. Maximum Value at a Given Index in a Bounded Array
• 1803. Count Pairs With XOR in a Range

Biweekly Contest 48

• 1796. Second Largest Digit in a String
• 1797. Design Authentication Manager
• 1798. Maximum Number of Consecutive Values You Can Make
• 1799. Maximize Score After N Operations

Weekly Contest 232

• 1790. Check if One String Swap Can Make Strings Equal
• 1791. Find Center of Star Graph
• 1792. Maximum Average Pass Ratio
• 1793. Maximum Score of a Good Subarray

Weekly Contest 231

• 1784. Check if Binary String Has at Most One Segment of Ones
• 1785. Minimum Elements to Add to Form a Given Sum
• 1786. Number of Restricted Paths From First to Last Node
• 1787. Make the XOR of All Segments Equal to Zero

Biweekly Contest 47

• 1779. Find Nearest Point That Has the Same X or Y Coordinate
• 1780. Check if Number is a Sum of Powers of Three
• 1781. Sum of Beauty of All Substrings
• 1782. Count Pairs Of Nodes

Weekly Contest 230

• 1773. Count Items Matching a Rule
• 1774. Closest Dessert Cost
• 1775. Equal Sum Arrays With Minimum Number of Operations
• 1776. Car Fleet II

Weekly Contest 229

• 1768. Merge Strings Alternately
• 1769. Minimum Number of Operations to Move All Balls to Each Box
• 1770. Maximum Score from Performing Multiplication Operations
• 1771. Maximize Palindrome Length From Subsequences

Biweekly Contest 46

• 1763. Longest Nice Substring
• 1764. Form Array by Concatenating Subarrays of Another Array
• 1765. Map of Highest Peak
• 1766. Tree of Coprimes

Weekly Contest 228

• 1758. Minimum Changes To Make Alternating Binary String
• 1759. Count Number of Homogenous Substrings
• 1760. Minimum Limit of Balls in a Bag
• 1761. Minimum Degree of a Connected Trio in a Graph

Weekly Contest 227

• 1752. Check if Array Is Sorted and Rotated
• 1753. Maximum Score From Removing Stones
• 1754. Largest Merge Of Two Strings
• 1755. Closest Subsequence Sum

Biweekly Contest 45

• 1748. Sum of Unique Elements
• 1749. Maximum Absolute Sum of Any Subarray
• 1750. Minimum Length of String After Deleting Similar Ends
• 1751. Maximum Number of Events That Can Be Attended II

Weekly Contest 226

• 1742. Maximum Number of Balls in a Box
• 1743. Restore the Array From Adjacent Pairs
• 1744. Can You Eat Your Favorite Candy on Your Favorite Day
• 1745. Palindrome Partitioning IV

Weekly Contest 225

• 1736. Latest Time by Replacing Hidden Digits
• 1737. Change Minimum Characters to Satisfy One of Three Conditions
• 1738. Find Kth Largest XOR Coordinate Value
• 1739. Building Boxes

Biweekly Contest 44

• 1732. Find the Highest Altitude
• 1733. Minimum Number of People to Teach
• 1734. Decode XORed Permutation
• 1735. Count Ways to Make Array With Product

Weekly Contest 224

• 1725. Number Of Rectangles That Can Form The Largest Square
• 1726. Tuple with Same Product
• 1727. Largest Submatrix With Rearrangements
• 1728. Cat and Mouse II

Weekly Contest 223

• 1720. Decode XORed Array
• 1721. Swapping Nodes in a Linked List
• 1722. Minimize Hamming Distance After Swap Operations
• 1723. Find Minimum Time to Finish All Jobs

Biweekly Contest 43

• 1716. Calculate Money in Leetcode Bank
• 1717. Maximum Score From Removing Substrings
• 1718. Construct the Lexicographically Largest Valid Sequence
• 1719. Number Of Ways To Reconstruct A Tree

Weekly Contest 222

• 1710. Maximum Units on a Truck
• 1711. Count Good Meals
• 1712. Ways to Split Array Into Three Subarrays
• 1713. Minimum Operations to Make a Subsequence

Weekly Contest 221

• 1704. Determine if String Halves Are Alike
• 1705. Maximum Number of Eaten Apples
• 1706. Where Will the Ball Fall
• 1707. Maximum XOR With an Element From Array

Biweekly Contest 42

• 1700. Number of Students Unable to Eat Lunch
• 1701. Average Waiting Time
• 1702. Maximum Binary String After Change
• 1703. Minimum Adjacent Swaps for K Consecutive Ones

Weekly Contest 220

• 1694. Reformat Phone Number
• 1695. Maximum Erasure Value
• 1696. Jump Game VI
• 1697. Checking Existence of Edge Length Limited Paths

Weekly Contest 219

• 1688. Count of Matches in Tournament
• 1689. Partitioning Into Minimum Number Of Deci-Binary Numbers
• 1690. Stone Game VII
• 1691. Maximum Height by Stacking Cuboids

Biweekly Contest 41

• 1684. Count the Number of Consistent Strings
• 1685. Sum of Absolute Differences in a Sorted Array
• 1686. Stone Game VI
• 1687. Delivering Boxes from Storage to Ports

Weekly Contest 218

• 1678. Goal Parser Interpretation
• 1679. Max Number of K-Sum Pairs
• 1680. Concatenation of Consecutive Binary Numbers
• 1681. Minimum Incompatibility

Weekly Contest 217

• 1672. Richest Customer Wealth
• 1673. Find the Most Competitive Subsequence
• 1674. Minimum Moves to Make Array Complementary
• 1675. Minimize Deviation in Array

Biweekly Contest 40

• 1668. Maximum Repeating Substring
• 1669. Merge In Between Linked Lists
• 1670. Design Front Middle Back Queue
• 1671. Minimum Number of Removals to Make Mountain Array

Weekly Contest 216

• 1662. Check If Two String Arrays are Equivalent
• 1663. Smallest String With A Given Numeric Value
• 1664. Ways to Make a Fair Array
• 1665. Minimum Initial Energy to Finish Tasks

Weekly Contest 215

• 1656. Design an Ordered Stream
• 1657. Determine if Two Strings Are Close
• 1658. Minimum Operations to Reduce X to Zero
• 1659. Maximize Grid Happiness

Biweekly Contest 39

• 1652. Defuse the Bomb
• 1653. Minimum Deletions to Make String Balanced
• 1654. Minimum Jumps to Reach Home
• 1655. Distribute Repeating Integers

Weekly Contest 214

• 1646. Get Maximum in Generated Array
• 1647. Minimum Deletions to Make Character Frequencies Unique
• 1648. Sell Diminishing-Valued Colored Balls
• 1649. Create Sorted Array through Instructions

Weekly Contest 213

• 1640. Check Array Formation Through Concatenation
• 1641. Count Sorted Vowel Strings
• 1642. Furthest Building You Can Reach
• 1643. Kth Smallest Instructions

Biweekly Contest 38

• 1636. Sort Array by Increasing Frequency
• 1637. Widest Vertical Area Between Two Points Containing No Points
• 1638. Count Substrings That Differ by One Character
• 1639. Number of Ways to Form a Target String Given a Dictionary

Weekly Contest 212

• 1629. Slowest Key
• 1630. Arithmetic Subarrays
• 1631. Path With Minimum Effort
• 1632. Rank Transform of a Matrix

Weekly Contest 211

• 1624. Largest Substring Between Two Equal Characters
• 1625. Lexicographically Smallest String After Applying Operations
• 1626. Best Team With No Conflicts
• 1627. Graph Connectivity With Threshold

Biweekly Contest 37

• 1619. Mean of Array After Removing Some Elements
• 1620. Coordinate With Maximum Network Quality
• 1621. Number of Sets of K Non-Overlapping Line Segments
• 1622. Fancy Sequence

Weekly Contest 210

• 1614. Maximum Nesting Depth of the Parentheses
• 1615. Maximal Network Rank
• 1616. Split Two Strings to Make Palindrome
• 1617. Count Subtrees With Max Distance Between Cities

Weekly Contest 209

• 1608. Special Array With X Elements Greater Than or Equal X
• 1609. Even Odd Tree
• 1610. Maximum Number of Visible Points
• 1611. Minimum One Bit Operations to Make Integers Zero

Biweekly Contest 36

• 1603. Design Parking System
• 1604. Alert Using Same Key-Card Three or More Times in a One Hour Period
• 1605. Find Valid Matrix Given Row and Column Sums
• 1606. Find Servers That Handled Most Number of Requests

Weekly Contest 208

• 1598. Crawler Log Folder
• 1599. Maximum Profit of Operating a Centennial Wheel
• 1600. Throne Inheritance
• 1601. Maximum Number of Achievable Transfer Requests

Weekly Contest 207

• 1592. Rearrange Spaces Between Words
• 1593. Split a String Into the Max Number of Unique Substrings
• 1594. Maximum Non Negative Product in a Matrix
• 1595. Minimum Cost to Connect Two Groups of Points

Biweekly Contest 35

• 1588. Sum of All Odd Length Subarrays
• 1589. Maximum Sum Obtained of Any Permutation
• 1590. Make Sum Divisible by P
• 1591. Strange Printer II

Weekly Contest 206

• 1582. Special Positions in a Binary Matrix
• 1583. Count Unhappy Friends
• 1584. Min Cost to Connect All Points
• 1585. Check If String Is Transformable With Substring Sort Operations

Weekly Contest 205

• 1576. Replace All 's to Avoid Consecutive Repeating Characters
• 1577. Number of Ways Where Square of Number Is Equal to Product of Two Numbers
• 1578. Minimum Time to Make Rope Colorful
• 1579. Remove Max Number of Edges to Keep Graph Fully Traversable

Biweekly Contest 34

• 1572. Matrix Diagonal Sum
• 1573. Number of Ways to Split a String
• 1574. Shortest Subarray to be Removed to Make Array Sorted
• 1575. Count All Possible Routes

Weekly Contest 204

• 1566. Detect Pattern of Length M Repeated K or More Times
• 1567. Maximum Length of Subarray With Positive Product
• 1568. Minimum Number of Days to Disconnect Island
• 1569. Number of Ways to Reorder Array to Get Same BST

Weekly Contest 203

• 1560. Most Visited Sector in a Circular Track
• 1561. Maximum Number of Coins You Can Get
• 1562. Find Latest Group of Size M
• 1563. Stone Game V

Biweekly Contest 33

• 1556. Thousand Separator
• 1557. Minimum Number of Vertices to Reach All Nodes
• 1558. Minimum Numbers of Function Calls to Make Target Array
• 1559. Detect Cycles in 2D Grid

Weekly Contest 202

• 1550. Three Consecutive Odds
• 1551. Minimum Operations to Make Array Equal
• 1552. Magnetic Force Between Two Balls
• 1553. Minimum Number of Days to Eat N Oranges

Weekly Contest 201

• 1544. Make The String Great
• 1545. Find Kth Bit in Nth Binary String
• 1546. Maximum Number of Non-Overlapping Subarrays With Sum Equals Target
• 1547. Minimum Cost to Cut a Stick

Biweekly Contest 32

• 1539. Kth Missing Positive Number
• 1540. Can Convert String in K Moves
• 1541. Minimum Insertions to Balance a Parentheses String
• 1542. Find Longest Awesome Substring

Weekly Contest 200

• 1534. Count Good Triplets
• 1535. Find the Winner of an Array Game
• 1536. Minimum Swaps to Arrange a Binary Grid
• 1537. Get the Maximum Score

Weekly Contest 199

• 1528. Shuffle String
• 1529. Minimum Suffix Flips
• 1530. Number of Good Leaf Nodes Pairs
• 1531. String Compression II

Biweekly Contest 31

• 1523. Count Odd Numbers in an Interval Range
• 1524. Number of Sub-arrays With Odd Sum
• 1525. Number of Good Ways to Split a String
• 1526. Minimum Number of Increments on Subarrays to Form a Target Array

Weekly Contest 198

• 1518. Water Bottles
• 1519. Number of Nodes in the Sub-Tree With the Same Label
• 1520. Maximum Number of Non-Overlapping Substrings
• 1521. Find a Value of a Mysterious Function Closest to Target

Weekly Contest 197

• 1512. Number of Good Pairs
• 1513. Number of Substrings With Only 1s
• 1514. Path with Maximum Probability
• 1515. Best Position for a Service Centre

Biweekly Contest 30

• 1507. Reformat Date
• 1508. Range Sum of Sorted Subarray Sums
• 1509. Minimum Difference Between Largest and Smallest Value in Three Moves
• 1510. Stone Game IV

Weekly Contest 196

• 1502. Can Make Arithmetic Progression From Sequence
• 1503. Last Moment Before All Ants Fall Out of a Plank
• 1504. Count Submatrices With All Ones
• 1505. Minimum Possible Integer After at Most K Adjacent Swaps On Digits

Weekly Contest 195

• 1496. Path Crossing
• 1497. Check If Array Pairs Are Divisible by k
• 1498. Number of Subsequences That Satisfy the Given Sum Condition
• 1499. Max Value of Equation

Biweekly Contest 29

• 1491. Average Salary Excluding the Minimum and Maximum Salary
• 1492. The kth Factor of n
• 1493. Longest Subarray of 1's After Deleting One Element
• 1494. Parallel Courses II

Weekly Contest 194

• 1486. XOR Operation in an Array
• 1487. Making File Names Unique
• 1488. Avoid Flood in The City
• 1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree

Weekly Contest 193

• 1480. Running Sum of 1d Array
• 1481. Least Number of Unique Integers after K Removals
• 1482. Minimum Number of Days to Make m Bouquets
• 1483. Kth Ancestor of a Tree Node

Biweekly Contest 28

• 1475. Final Prices With a Special Discount in a Shop
• 1476. Subrectangle Queries
• 1477. Find Two Non-overlapping Sub-arrays Each With Target Sum
• 1478. Allocate Mailboxes

Weekly Contest 192

• 1470. Shuffle the Array
• 1471. The k Strongest Values in an Array
• 1472. Design Browser History
• 1473. Paint House III

Weekly Contest 191

• 1464. Maximum Product of Two Elements in an Array
• 1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts
• 1466. Reorder Routes to Make All Paths Lead to the City Zero
• 1467. Probability of a Two Boxes Having The Same Number of Distinct Balls

Biweekly Contest 27

• 1460. Make Two Arrays Equal by Reversing Subarrays
• 1461. Check If a String Contains All Binary Codes of Size K
• 1462. Course Schedule IV
• 1463. Cherry Pickup II

Weekly Contest 190

• 1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence
• 1456. Maximum Number of Vowels in a Substring of Given Length
• 1457. Pseudo-Palindromic Paths in a Binary Tree
• 1458. Max Dot Product of Two Subsequences

Weekly Contest 189

• 1450. Number of Students Doing Homework at a Given Time
• 1451. Rearrange Words in a Sentence
• 1452. People Whose List of Favorite Companies Is Not a Subset of Another List
• 1453. Maximum Number of Darts Inside of a Circular Dartboard

Biweekly Contest 26

• 1446. Consecutive Characters
• 1447. Simplified Fractions
• 1448. Count Good Nodes in Binary Tree
• 1449. Form Largest Integer With Digits That Add up to Target

Weekly Contest 188

• 1441. Build an Array With Stack Operations
• 1442. Count Triplets That Can Form Two Arrays of Equal XOR
• 1443. Minimum Time to Collect All Apples in a Tree
• 1444. Number of Ways of Cutting a Pizza

Weekly Contest 187

• 1436. Destination City
• 1437. Check If All 1's Are at Least Length K Places Away
• 1438. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit
• 1439. Find the Kth Smallest Sum of a Matrix With Sorted Rows

Biweekly Contest 25

• 1431. Kids With the Greatest Number of Candies
• 1432. Max Difference You Can Get From Changing an Integer
• 1433. Check If a String Can Break Another String
• 1434. Number of Ways to Wear Different Hats to Each Other

Weekly Contest 186

• 1422. Maximum Score After Splitting a String
• 1423. Maximum Points You Can Obtain from Cards
• 1424. Diagonal Traverse II
• 1425. Constrained Subsequence Sum

Weekly Contest 185

• 1417. Reformat The String
• 1418. Display Table of Food Orders in a Restaurant
• 1419. Minimum Number of Frogs Croaking
• 1420. Build Array Where You Can Find The Maximum Exactly K Comparisons

Biweekly Contest 24

• 1413. Minimum Value to Get Positive Step by Step Sum
• 1414. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K
• 1415. The k-th Lexicographical String of All Happy Strings of Length n
• 1416. Restore The Array

Weekly Contest 184

• 1408. String Matching in an Array
• 1409. Queries on a Permutation With Key
• 1410. HTML Entity Parser
• 1411. Number of Ways to Paint N × 3 Grid

Weekly Contest 183

• 1403. Minimum Subsequence in Non-Increasing Order
• 1404. Number of Steps to Reduce a Number in Binary Representation to One
• 1405. Longest Happy String
• 1406. Stone Game III

Biweekly Contest 23

• 1399. Count Largest Group
• 1400. Construct K Palindrome Strings
• 1401. Circle and Rectangle Overlapping
• 1402. Reducing Dishes

Weekly Contest 182

• 1394. Find Lucky Integer in an Array
• 1395. Count Number of Teams
• 1396. Design Underground System
• 1397. Find All Good Strings

Weekly Contest 181

• 1389. Create Target Array in the Given Order
• 1390. Four Divisors
• 1391. Check if There is a Valid Path in a Grid
• 1392. Longest Happy Prefix

Biweekly Contest 22

• 1385. Find the Distance Value Between Two Arrays
• 1386. Cinema Seat Allocation
• 1387. Sort Integers by The Power Value
• 1388. Pizza With 3n Slices

Weekly Contest 180

• 1380. Lucky Numbers in a Matrix
• 1381. Design a Stack With Increment Operation
• 1382. Balance a Binary Search Tree
• 1383. Maximum Performance of a Team

Weekly Contest 179

• 1374. Generate a String With Characters That Have Odd Counts
• 1375. Number of Times Binary String Is Prefix-Aligned
• 1376. Time Needed to Inform All Employees
• 1377. Frog Position After T Seconds

Biweekly Contest 21

• 1370. Increasing Decreasing String
• 1371. Find the Longest Substring Containing Vowels in Even Counts
• 1372. Longest ZigZag Path in a Binary Tree
• 1373. Maximum Sum BST in Binary Tree

Weekly Contest 178

• 1365. How Many Numbers Are Smaller Than the Current Number
• 1366. Rank Teams by Votes
• 1367. Linked List in Binary Tree
• 1368. Minimum Cost to Make at Least One Valid Path in a Grid

Weekly Contest 177

• 1360. Number of Days Between Two Dates
• 1361. Validate Binary Tree Nodes
• 1362. Closest Divisors
• 1363. Largest Multiple of Three

Biweekly Contest 20

• 1356. Sort Integers by The Number of 1 Bits
• 1357. Apply Discount Every n Orders
• 1358. Number of Substrings Containing All Three Characters
• 1359. Count All Valid Pickup and Delivery Options

Weekly Contest 176

• 1351. Count Negative Numbers in a Sorted Matrix
• 1352. Product of the Last K Numbers
• 1353. Maximum Number of Events That Can Be Attended
• 1354. Construct Target Array With Multiple Sums

Weekly Contest 175

• 1346. Check If N and Its Double Exist
• 1347. Minimum Number of Steps to Make Two Strings Anagram
• 1348. Tweet Counts Per Frequency
• 1349. Maximum Students Taking Exam

Biweekly Contest 19

• 1342. Number of Steps to Reduce a Number to Zero
• 1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold
• 1344. Angle Between Hands of a Clock
• 1345. Jump Game IV

Weekly Contest 174

• 1337. The K Weakest Rows in a Matrix
• 1338. Reduce Array Size to The Half
• 1339. Maximum Product of Splitted Binary Tree
• 1340. Jump Game V

Weekly Contest 173

• 1332. Remove Palindromic Subsequences
• 1333. Filter Restaurants by Vegan-Friendly, Price and Distance
• 1334. Find the City With the Smallest Number of Neighbors at a Threshold Distance
• 1335. Minimum Difficulty of a Job Schedule

Biweekly Contest 18

• 1331. Rank Transform of an Array
• 1328. Break a Palindrome
• 1329. Sort the Matrix Diagonally
• 1330. Reverse Subarray To Maximize Array Value

Weekly Contest 172

• 1323. Maximum 69 Number
• 1324. Print Words Vertically
• 1325. Delete Leaves With a Given Value
• 1326. Minimum Number of Taps to Open to Water a Garden

Weekly Contest 171

• 1317. Convert Integer to the Sum of Two No-Zero Integers
• 1318. Minimum Flips to Make a OR b Equal to c
• 1319. Number of Operations to Make Network Connected
• 1320. Minimum Distance to Type a Word Using Two Fingers

Biweekly Contest 17

• 1313. Decompress Run-Length Encoded List
• 1314. Matrix Block Sum
• 1315. Sum of Nodes with Even-Valued Grandparent
• 1316. Distinct Echo Substrings

Weekly Contest 170

• 1309. Decrypt String from Alphabet to Integer Mapping
• 1310. XOR Queries of a Subarray
• 1311. Get Watched Videos by Your Friends
• 1312. Minimum Insertion Steps to Make a String Palindrome

Weekly Contest 169

• 1304. Find N Unique Integers Sum up to Zero
• 1305. All Elements in Two Binary Search Trees
• 1306. Jump Game III
• 1307. Verbal Arithmetic Puzzle

Biweekly Contest 16

• 1299. Replace Elements with Greatest Element on Right Side
• 1300. Sum of Mutated Array Closest to Target
• 1302. Deepest Leaves Sum
• 1301. Number of Paths with Max Score

Weekly Contest 168

• 1295. Find Numbers with Even Number of Digits
• 1296. Divide Array in Sets of K Consecutive Numbers
• 1297. Maximum Number of Occurrences of a Substring
• 1298. Maximum Candies You Can Get from Boxes

Weekly Contest 167

• 1290. Convert Binary Number in a Linked List to Integer
• 1291. Sequential Digits
• 1292. Maximum Side Length of a Square with Sum Less than or Equal to Threshold
• 1293. Shortest Path in a Grid with Obstacles Elimination

Biweekly Contest 15

• 1287. Element Appearing More Than 25% In Sorted Array
• 1288. Remove Covered Intervals
• 1286. Iterator for Combination
• 1289. Minimum Falling Path Sum II

Weekly Contest 166

• 1281. Subtract the Product and Sum of Digits of an Integer
• 1282. Group the People Given the Group Size They Belong To
• 1283. Find the Smallest Divisor Given a Threshold
• 1284. Minimum Number of Flips to Convert Binary Matrix to Zero Matrix

Weekly Contest 165

• 1275. Find Winner on a Tic Tac Toe Game
• 1276. Number of Burgers with No Waste of Ingredients
• 1277. Count Square Submatrices with All Ones
• 1278. Palindrome Partitioning III

Biweekly Contest 14

• 1271. Hexspeak
• 1272. Remove Interval
• 1273. Delete Tree Nodes
• 1274. Number of Ships in a Rectangle

Weekly Contest 164

• 1266. Minimum Time Visiting All Points
• 1267. Count Servers that Communicate
• 1268. Search Suggestions System
• 1269. Number of Ways to Stay in the Same Place After Some Steps

Weekly Contest 163

• 1260. Shift 2D Grid
• 1261. Find Elements in a Contaminated Binary Tree
• 1262. Greatest Sum Divisible by Three
• 1263. Minimum Moves to Move a Box to Their Target Location

Biweekly Contest 13

• 1256. Encode Number
• 1257. Smallest Common Region
• 1258. Synonymous Sentences
• 1259. Handshakes That Don't Cross

Weekly Contest 162

• 1252. Cells with Odd Values in a Matrix
• 1253. Reconstruct a 2-Row Binary Matrix
• 1254. Number of Closed Islands
• 1255. Maximum Score Words Formed by Letters

Weekly Contest 161

• 1247. Minimum Swaps to Make Strings Equal
• 1248. Count Number of Nice Subarrays
• 1249. Minimum Remove to Make Valid Parentheses
• 1250. Check If It Is a Good Array

Biweekly Contest 12

• 1244. Design A Leaderboard
• 1243. Array Transformation
• 1245. Tree Diameter
• 1246. Palindrome Removal

Weekly Contest 160

• 1237. Find Positive Integer Solution for a Given Equation
• 1238. Circular Permutation in Binary Representation
• 1239. Maximum Length of a Concatenated String with Unique Characters
• 1240. Tiling a Rectangle with the Fewest Squares

Weekly Contest 159

• 1232. Check If It Is a Straight Line
• 1233. Remove Sub-Folders from the Filesystem
• 1234. Replace the Substring for Balanced String
• 1235. Maximum Profit in Job Scheduling

Biweekly Contest 11

• 1228. Missing Number In Arithmetic Progression
• 1229. Meeting Scheduler
• 1230. Toss Strange Coins
• 1231. Divide Chocolate

Weekly Contest 158

• 1221. Split a String in Balanced Strings
• 1222. Queens That Can Attack the King
• 1223. Dice Roll Simulation
• 1224. Maximum Equal Frequency

Weekly Contest 157

• 1217. Minimum Cost to Move Chips to The Same Position
• 1218. Longest Arithmetic Subsequence of Given Difference
• 1219. Path with Maximum Gold
• 1220. Count Vowels Permutation

Biweekly Contest 10

• 1213. Intersection of Three Sorted Arrays
• 1214. Two Sum BSTs
• 1215. Stepping Numbers
• 1216. Valid Palindrome III

Weekly Contest 156

• 1207. Unique Number of Occurrences
• 1208. Get Equal Substrings Within Budget
• 1209. Remove All Adjacent Duplicates in String II
• 1210. Minimum Moves to Reach Target with Rotations

Weekly Contest 155

• 1200. Minimum Absolute Difference
• 1201. Ugly Number III
• 1202. Smallest String With Swaps
• 1203. Sort Items by Groups Respecting Dependencies

Biweekly Contest 9

• 1196. How Many Apples Can You Put into the Basket
• 1197. Minimum Knight Moves
• 1198. Find Smallest Common Element in All Rows
• 1199. Minimum Time to Build Blocks

Weekly Contest 154

• 1189. Maximum Number of Balloons
• 1190. Reverse Substrings Between Each Pair of Parentheses
• 1191. K-Concatenation Maximum Sum
• 1192. Critical Connections in a Network

Weekly Contest 153

• 1184. Distance Between Bus Stops
• 1185. Day of the Week
• 1186. Maximum Subarray Sum with One Deletion
• 1187. Make Array Strictly Increasing

Biweekly Contest 8

• 1180. Count Substrings with Only One Distinct Letter
• 1181. Before and After Puzzle
• 1182. Shortest Distance to Target Color
• 1183. Maximum Number of Ones

Weekly Contest 152

• 1175. Prime Arrangements
• 1176. Diet Plan Performance
• 1177. Can Make Palindrome from Substring
• 1178. Number of Valid Words for Each Puzzle

Weekly Contest 151

• 1169. Invalid Transactions
• 1170. Compare Strings by Frequency of the Smallest Character
• 1171. Remove Zero Sum Consecutive Nodes from Linked List
• 1172. Dinner Plate Stacks

Biweekly Contest 7

• 1165. Single-Row Keyboard
• 1166. Design File System
• 1167. Minimum Cost to Connect Sticks
• 1168. Optimize Water Distribution in a Village

Weekly Contest 150

• 1160. Find Words That Can Be Formed by Characters
• 1161. Maximum Level Sum of a Binary Tree
• 1162. As Far from Land as Possible
• 1163. Last Substring in Lexicographical Order

Weekly Contest 149

• 1154. Day of the Year
• 1155. Number of Dice Rolls With Target Sum
• 1156. Swap For Longest Repeated Character Substring
• 1157. Online Majority Element In Subarray

Biweekly Contest 6

• 1150. Check If a Number Is Majority Element in a Sorted Array
• 1151. Minimum Swaps to Group All 1's Together
• 1152. Analyze User Website Visit Pattern
• 1153. String Transforms Into Another String

Weekly Contest 148

• 1144. Decrease Elements To Make Array Zigzag
• 1145. Binary Tree Coloring Game
• 1146. Snapshot Array
• 1147. Longest Chunked Palindrome Decomposition

Weekly Contest 147

• 1137. N-th Tribonacci Number
• 1138. Alphabet Board Path
• 1139. Largest 1-Bordered Square
• 1140. Stone Game II

Biweekly Contest 5

• 1133. Largest Unique Number
• 1134. Armstrong Number
• 1135. Connecting Cities With Minimum Cost
• 1136. Parallel Courses

Weekly Contest 146

• 1128. Number of Equivalent Domino Pairs
• 1129. Shortest Path with Alternating Colors
• 1130. Minimum Cost Tree From Leaf Values
• 1131. Maximum of Absolute Value Expression

Weekly Contest 145

• 1122. Relative Sort Array
• 1123. Lowest Common Ancestor of Deepest Leaves
• 1124. Longest Well-Performing Interval
• 1125. Smallest Sufficient Team

Biweekly Contest 4

• 1118. Number of Days in a Month
• 1119. Remove Vowels from a String
• 1120. Maximum Average Subtree
• 1121. Divide Array Into Increasing Sequences

Weekly Contest 144

• 1108. Defanging an IP Address
• 1109. Corporate Flight Bookings
• 1110. Delete Nodes And Return Forest
• 1111. Maximum Nesting Depth of Two Valid Parentheses Strings

Weekly Contest 143

• 1103. Distribute Candies to People
• 1104. Path In Zigzag Labelled Binary Tree
• 1105. Filling Bookcase Shelves
• 1106. Parsing A Boolean Expression

Biweekly Contest 3

• 1099. Two Sum Less Than K
• 1100. Find K-Length Substrings With No Repeated Characters
• 1101. The Earliest Moment When Everyone Become Friends
• 1102. Path With Maximum Minimum Value

Weekly Contest 142

• 1093. Statistics from a Large Sample
• 1094. Car Pooling
• 1095. Find in Mountain Array
• 1096. Brace Expansion II

Weekly Contest 141

• 1089. Duplicate Zeros
• 1090. Largest Values From Labels
• 1091. Shortest Path in Binary Matrix
• 1092. Shortest Common Supersequence

Biweekly Contest 2

• 1085. Sum of Digits in the Minimum Number
• 1086. High Five
• 1087. Brace Expansion
• 1088. Confusing Number II

Weekly Contest 140

• 1078. Occurrences After Bigram
• 1079. Letter Tile Possibilities
• 1080. Insufficient Nodes in Root to Leaf Paths
• 1081. Smallest Subsequence of Distinct Characters

Weekly Contest 139

• 1071. Greatest Common Divisor of Strings
• 1072. Flip Columns For Maximum Number of Equal Rows
• 1073. Adding Two Negabinary Numbers
• 1074. Number of Submatrices That Sum to Target

Biweekly Contest 1

• 1064. Fixed Point
• 1065. Index Pairs of a String
• 1066. Campus Bikes II
• 1067. Digit Count in Range

Weekly Contest 138

• 1051. Height Checker
• 1052. Grumpy Bookstore Owner
• 1053. Previous Permutation With One Swap
• 1054. Distant Barcodes

Weekly Contest 137

• 1046. Last Stone Weight
• 1047. Remove All Adjacent Duplicates In String
• 1048. Longest String Chain
• 1049. Last Stone Weight II

Weekly Contest 136

• 1041. Robot Bounded In Circle
• 1042. Flower Planting With No Adjacent
• 1043. Partition Array for Maximum Sum
• 1044. Longest Duplicate Substring

Weekly Contest 135

• 1037. Valid Boomerang
• 1038. Binary Search Tree to Greater Sum Tree
• 1039. Minimum Score Triangulation of Polygon
• 1040. Moving Stones Until Consecutive II

Weekly Contest 134

• 1033. Moving Stones Until Consecutive
• 1034. Coloring A Border
• 1035. Uncrossed Lines
• 1036. Escape a Large Maze

Weekly Contest 133

• 1029. Two City Scheduling
• 1030. Matrix Cells in Distance Order
• 1031. Maximum Sum of Two Non-Overlapping Subarrays
• 1032. Stream of Characters

Weekly Contest 132

• 1025. Divisor Game
• 1026. Maximum Difference Between Node and Ancestor
• 1027. Longest Arithmetic Subsequence
• 1028. Recover a Tree From Preorder Traversal

Weekly Contest 131

• 1021. Remove Outermost Parentheses
• 1022. Sum of Root To Leaf Binary Numbers
• 1023. Camelcase Matching
• 1024. Video Stitching

Weekly Contest 130

• 1018. Binary Prefix Divisible By 5
• 1017. Convert to Base -2
• 1019. Next Greater Node In Linked List
• 1020. Number of Enclaves

Weekly Contest 129

• 1013. Partition Array Into Three Parts With Equal Sum
• 1015. Smallest Integer Divisible by K
• 1014. Best Sightseeing Pair
• 1016. Binary String With Substrings Representing 1 To N

Weekly Contest 128

• 1009. Complement of Base 10 Integer
• 1010. Pairs of Songs With Total Durations Divisible by 60
• 1011. Capacity To Ship Packages Within D Days
• 1012. Numbers With Repeated Digits

Weekly Contest 127

• 1005. Maximize Sum Of Array After K Negations
• 1006. Clumsy Factorial
• 1007. Minimum Domino Rotations For Equal Row
• 1008. Construct Binary Search Tree from Preorder Traversal

Weekly Contest 126

• 1002. Find Common Characters
• 1003. Check If Word Is Valid After Substitutions
• 1004. Max Consecutive Ones III
• 1000. Minimum Cost to Merge Stones

Weekly Contest 125

• 0997. Find the Town Judge
• 0999. Available Captures for Rook
• 0998. Maximum Binary Tree II
• 1001. Grid Illumination

Weekly Contest 124

• 0993. Cousins in Binary Tree
• 0994. Rotting Oranges
• 0995. Minimum Number of K Consecutive Bit Flips
• 0996. Number of Squareful Arrays

Weekly Contest 123

• 0989. Add to Array-Form of Integer
• 0990. Satisfiability of Equality Equations
• 0991. Broken Calculator
• 0992. Subarrays with K Different Integers

Weekly Contest 122

• 0985. Sum of Even Numbers After Queries
• 0988. Smallest String Starting From Leaf
• 0986. Interval List Intersections
• 0987. Vertical Order Traversal of a Binary Tree

Weekly Contest 121

• 0984. String Without AAA or BBB
• 0981. Time Based Key-Value Store
• 0983. Minimum Cost For Tickets
• 0982. Triples with Bitwise AND Equal To Zero

Weekly Contest 120

• 0977. Squares of a Sorted Array
• 0978. Longest Turbulent Subarray
• 0979. Distribute Coins in Binary Tree
• 0980. Unique Paths III

Weekly Contest 119

• 0973. K Closest Points to Origin
• 0976. Largest Perimeter Triangle
• 0974. Subarray Sums Divisible by K
• 0975. Odd Even Jump

Weekly Contest 118

• 0970. Powerful Integers
• 0969. Pancake Sorting
• 0971. Flip Binary Tree To Match Preorder Traversal
• 0972. Equal Rational Numbers

Weekly Contest 117

• 0965. Univalued Binary Tree
• 0967. Numbers With Same Consecutive Differences
• 0966. Vowel Spellchecker
• 0968. Binary Tree Cameras

Weekly Contest 116

• 0961. N-Repeated Element in Size 2N Array
• 0962. Maximum Width Ramp
• 0963. Minimum Area Rectangle II
• 0964. Least Operators to Express Number

Weekly Contest 115

• 0957. Prison Cells After N Days
• 0958. Check Completeness of a Binary Tree
• 0959. Regions Cut By Slashes
• 0960. Delete Columns to Make Sorted III

Weekly Contest 114

• 0953. Verifying an Alien Dictionary
• 0954. Array of Doubled Pairs
• 0955. Delete Columns to Make Sorted II
• 0956. Tallest Billboard

Weekly Contest 113

• 0949. Largest Time for Given Digits
• 0951. Flip Equivalent Binary Trees
• 0950. Reveal Cards In Increasing Order
• 0952. Largest Component Size by Common Factor

Weekly Contest 112

• 0945. Minimum Increment to Make Array Unique
• 0946. Validate Stack Sequences
• 0947. Most Stones Removed with Same Row or Column
• 0948. Bag of Tokens

Weekly Contest 111

• 0941. Valid Mountain Array
• 0944. Delete Columns to Make Sorted
• 0942. DI String Match
• 0943. Find the Shortest Superstring

Weekly Contest 110

• 0937. Reorder Data in Log Files
• 0938. Range Sum of BST
• 0939. Minimum Area Rectangle
• 0940. Distinct Subsequences II

Weekly Contest 109

• 0933. Number of Recent Calls
• 0935. Knight Dialer
• 0934. Shortest Bridge
• 0936. Stamping The Sequence

Weekly Contest 108

• 0929. Unique Email Addresses
• 0930. Binary Subarrays With Sum
• 0931. Minimum Falling Path Sum
• 0932. Beautiful Array

Weekly Contest 107

• 0925. Long Pressed Name
• 0926. Flip String to Monotone Increasing
• 0927. Three Equal Parts
• 0928. Minimize Malware Spread II

Weekly Contest 106

• 0922. Sort Array By Parity II
• 0921. Minimum Add to Make Parentheses Valid
• 0923. 3Sum With Multiplicity
• 0924. Minimize Malware Spread

Weekly Contest 105

• 0917. Reverse Only Letters
• 0918. Maximum Sum Circular Subarray
• 0919. Complete Binary Tree Inserter
• 0920. Number of Music Playlists

Weekly Contest 104

• 0914. X of a Kind in a Deck of Cards
• 0915. Partition Array into Disjoint Intervals
• 0916. Word Subsets
• 0913. Cat and Mouse

Weekly Contest 103

• 0908. Smallest Range I
• 0909. Snakes and Ladders
• 0910. Smallest Range II
• 0911. Online Election

Weekly Contest 102

• 0905. Sort Array By Parity
• 0904. Fruit Into Baskets
• 0907. Sum of Subarray Minimums
• 0906. Super Palindromes

Weekly Contest 101

• 0900. RLE Iterator
• 0901. Online Stock Span
• 0902. Numbers At Most N Given Digit Set
• 0903. Valid Permutations for DI Sequence

Weekly Contest 100

• 0896. Monotonic Array
• 0897. Increasing Order Search Tree
• 0898. Bitwise ORs of Subarrays
• 0899. Orderly Queue

Weekly Contest 99

• 0892. Surface Area of 3D Shapes
• 0893. Groups of Special-Equivalent Strings
• 0894. All Possible Full Binary Trees
• 0895. Maximum Frequency Stack

Weekly Contest 98

• 0888. Fair Candy Swap
• 0890. Find and Replace Pattern
• 0889. Construct Binary Tree from Preorder and Postorder Traversal
• 0891. Sum of Subsequence Widths

Weekly Contest 97

• 0884. Uncommon Words from Two Sentences
• 0885. Spiral Matrix III
• 0886. Possible Bipartition
• 0887. Super Egg Drop

Weekly Contest 96

• 0883. Projection Area of 3D Shapes
• 0881. Boats to Save People
• 0880. Decoded String at Index
• 0882. Reachable Nodes In Subdivided Graph

Weekly Contest 95

• 0876. Middle of the Linked List
• 0877. Stone Game
• 0878. Nth Magical Number
• 0879. Profitable Schemes

Weekly Contest 94

• 0872. Leaf-Similar Trees
• 0874. Walking Robot Simulation
• 0875. Koko Eating Bananas
• 0873. Length of Longest Fibonacci Subsequence

Weekly Contest 93

• 0868. Binary Gap
• 0869. Reordered Power of 2
• 0870. Advantage Shuffle
• 0871. Minimum Number of Refueling Stops

Weekly Contest 92

• 0867. Transpose Matrix
• 0865. Smallest Subtree with all the Deepest Nodes
• 0866. Prime Palindrome
• 0864. Shortest Path to Get All Keys

Weekly Contest 91

• 0860. Lemonade Change
• 0863. All Nodes Distance K in Binary Tree
• 0861. Score After Flipping Matrix
• 0862. Shortest Subarray with Sum at Least K

Weekly Contest 90

• 0859. Buddy Strings
• 0856. Score of Parentheses
• 0858. Mirror Reflection
• 0857. Minimum Cost to Hire K Workers

Weekly Contest 89

• 0852. Peak Index in a Mountain Array
• 0853. Car Fleet
• 0855. Exam Room
• 0854. K-Similar Strings

Weekly Contest 88

• 0848. Shifting Letters
• 0849. Maximize Distance to Closest Person
• 0851. Loud and Rich
• 0850. Rectangle Area II

Weekly Contest 87

• 0844. Backspace String Compare
• 0845. Longest Mountain in Array
• 0846. Hand of Straights
• 0847. Shortest Path Visiting All Nodes

Weekly Contest 86

• 0840. Magic Squares In Grid
• 0841. Keys and Rooms
• 0842. Split Array into Fibonacci Sequence
• 0843. Guess the Word

Weekly Contest 85

• 0836. Rectangle Overlap
• 0838. Push Dominoes
• 0837. New 21 Game
• 0839. Similar String Groups

Weekly Contest 84

• 0832. Flipping an Image
• 0833. Find And Replace in String
• 0835. Image Overlap
• 0834. Sum of Distances in Tree

Weekly Contest 83

• 0830. Positions of Large Groups
• 0831. Masking Personal Information
• 0829. Consecutive Numbers Sum
• 0828. Count Unique Characters of All Substrings of a Given String

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