README.md

Q.No.	Category	Question
1	Easy	Two Sum
2	Medium	Add Two Numbers
3	Medium	Longest Substring Without Repeating Characters
5	Medium	Longest Palindromic Substring
6	Medium	Zigzag Conversion
7	Medium	Reverse Integer
8	Medium	String to Integer (atoi)
9	Easy	Palindrome Number
11	Medium	Container With Most Water
12	Medium	Integer to Roman
13	Easy	Roman to Integer
15	Medium	3Sum
16	Medium	3Sum Closest
17	Medium	Letter Combinations of a Phone Number
18	Medium	4Sum
19	Medium	Remove Nth Node From End of List
20	Easy	Valid Parentheses
21	Easy	Merge Two Sorted Lists
22	Medium	Generate Parentheses
24	Medium	Swap Nodes in Pairs
27	Easy	Remove Element
29	Medium	Divide Two Integers
31	Medium	Next Permutation
33	Medium	Search in Rotated Sorted Array
34	Medium	Find First and Last Position of Element in Sorted Array
35	Easy	Search Insert Position
36	Medium	Valid Sudoku
38	Medium	Count and Say
39	Medium	Combination Sum
40	Medium	Combination Sum II
43	Medium	Multiply Strings
45	Medium	Jump Game II
46	Medium	Permutations
47	Medium	Permutations II
48	Medium	Rotate Image
49	Medium	Group Anagrams
50	Medium	Pow(x, n)
53	Medium	Maximum Subarray
54	Medium	Spiral Matrix
55	Medium	Jump Game
56	Medium	Merge Intervals
57	Medium	Insert Interval
59	Medium	Spiral Matrix II
62	Medium	Unique Paths
63	Medium	Unique Paths II
64	Medium	Minimum Path Sum
66	Easy	Plus One
67	Easy	Add Binary
70	Easy	Climbing Stairs
71	Medium	Simplify Path
72	Medium	Edit Distance
73	Medium	Set Matrix Zeroes
74	Medium	Search a 2D Matrix
75	Medium	Sort Colors
77	Medium	Combinations
78	Medium	Subsets
79	Medium	Word Search
81	Medium	Search in Rotated Sorted Array II
86	Medium	Partition List
89	Medium	Gray Code
90	Medium	Subsets II
91	Medium	Decode Ways
92	Medium	Reverse Linked List II
94	Easy	Binary Tree Inorder Traversal
95	Medium	Unique Binary Search Trees II
97	Medium	Interleaving String
98	Medium	Validate Binary Search Tree
99	Medium	Recover Binary Search Tree
100	Easy	Same Tree
102	Medium	Binary Tree Level Order Traversal
103	Medium	Binary Tree Zigzag Level Order Traversal
104	Easy	Maximum Depth of Binary Tree
105	Medium	Construct Binary Tree from Preorder and Inorder Traversal
107	Medium	Binary Tree Level Order Traversal II
109	Medium	Convert Sorted List to Binary Search Tree
110	Easy	Balanced Binary Tree
111	Easy	Minimum Depth of Binary Tree
113	Medium	Path Sum II
114	Medium	Flatten Binary Tree to Linked List
116	Medium	Populating Next Right Pointers in Each Node
118	Easy	Pascal's Triangle
121	Easy	Best Time to Buy and Sell Stock
125	Easy	Valid Palindrome
128	Medium	Longest Consecutive Sequence
130	Medium	Surrounded Regions
131	Medium	Palindrome Partitioning
133	Medium	Clone Graph
134	Medium	Gas Station
136	Easy	Single Number
137	Medium	Single Number II
138	Medium	Copy List with Random Pointer
139	Medium	Word Break
141	Easy	Linked List Cycle
142	Medium	Linked List Cycle II
143	Medium	Reorder List
144	Easy	Binary Tree Preorder Traversal
146	Medium	LRU Cache
150	Medium	Evaluate Reverse Polish Notation
152	Medium	Maximum Product Subarray
153	Medium	Find Minimum in Rotated Sorted Array
155	Medium	Min Stack
162	Medium	Find Peak Element
167	Medium	Two Sum II - Input Array Is Sorted
168	Easy	Excel Sheet Column Title
169	Easy	Majority Element
189	Medium	Rotate Array
190	Easy	Reverse Bits
191	Easy	Number of 1 Bits
198	Medium	House Robber
199	Medium	Binary Tree Right Side View
200	Medium	Number of Islands
201	Medium	Bitwise AND of Numbers Range
202	Easy	Happy Number
205	Easy	Isomorphic Strings
206	Easy	Reverse Linked List
207	Medium	Course Schedule
208	Medium	Implement Trie (Prefix Tree)
209	Medium	Minimum Size Subarray Sum
210	Medium	Course Schedule II
211	Medium	Design Add and Search Words Data Structure
213	Medium	House Robber II
215	Medium	Kth Largest Element in an Array
217	Easy	Contains Duplicate
225	Easy	Implement Stack using Queues
226	Easy	Invert Binary Tree
228	Easy	Summary Ranges
229	Medium	Majority Element II
230	Medium	Kth Smallest Element in a BST
231	Easy	Power of Two
232	Easy	Implement Queue using Stacks
235	Medium	Lowest Common Ancestor of a Binary Search Tree
236	Medium	Lowest Common Ancestor of a Binary Tree
237	Medium	Delete Node in a Linked List
238	Medium	Product of Array Except Self
242	Easy	Valid Anagram
258	Easy	Add Digits
268	Easy	Missing Number
278	Easy	First Bad Version
279	Medium	Perfect Squares
283	Easy	Move Zeroes
287	Medium	Find the Duplicate Number
300	Medium	Longest Increasing Subsequence
309	Medium	Best Time to Buy and Sell Stock with Cooldown
310	Medium	Minimum Height Trees
316	Medium	Remove Duplicate Letters
318	Medium	Maximum Product of Word Lengths
319	Medium	Bulb Switcher
322	Medium	Coin Change
324	Medium	Wiggle Sort II
328	Medium	Odd Even Linked List
338	Easy	Counting Bits
341	Medium	Flatten Nested List Iterator
342	Easy	Power of Four
343	Medium	Integer Break
344	Easy	Reverse String
347	Medium	Top K Frequent Elements
349	Easy	Intersection of Two Arrays
355	Medium	Design Twitter
357	Medium	Count Numbers with Unique Digits
365	Medium	Water and Jug Problem
368	Medium	Largest Divisible Subset
371	Medium	Sum of Two Integers
372	Medium	Super Pow
373	Medium	Find K Pairs with Smallest Sums
375	Medium	Guess Number Higher or Lower II
376	Medium	Wiggle Subsequence
377	Medium	Combination Sum IV
378	Medium	Kth Smallest Element in a Sorted Matrix
380	Medium	Insert Delete GetRandom O(1)
382	Medium	Linked List Random Node
383	Easy	Ransom Note
384	Medium	Shuffle an Array
385	Medium	Mini Parser
386	Medium	Lexicographical Numbers
387	Easy	First Unique Character in a String
388	Medium	Longest Absolute File Path
390	Medium	Elimination Game
392	Easy	Is Subsequence
393	Medium	UTF-8 Validation
394	Medium	Decode String
395	Medium	Longest Substring with At Least K Repeating Characters
396	Medium	Rotate Function
397	Medium	Integer Replacement
398	Medium	Random Pick Index
399	Medium	Evaluate Division
400	Medium	Nth Digit
402	Medium	Remove K Digits
406	Medium	Queue Reconstruction by Height
409	Easy	Longest Palindrome
415	Easy	Add Strings
416	Medium	Partition Equal Subset Sum
417	Medium	Pacific Atlantic Water Flow
419	Medium	Battleships in a Board
421	Medium	Maximum XOR of Two Numbers in an Array
423	Medium	Reconstruct Original Digits from English
424	Medium	Longest Repeating Character Replacement
427	Medium	Construct Quad Tree
429	Medium	N-ary Tree Level Order Traversal
433	Medium	Minimum Genetic Mutation
435	Medium	Non-overlapping Intervals
436	Medium	Find Right Interval
437	Medium	Path Sum III
438	Medium	Find All Anagrams in a String
443	Medium	String Compression
445	Medium	Add Two Numbers II
447	Medium	Number of Boomerangs
449	Medium	Serialize and Deserialize BST
451	Medium	Sort Characters By Frequency
452	Medium	Minimum Number of Arrows to Burst Balloons
454	Medium	4Sum II
455	Easy	Assign Cookies
456	Medium	132 Pattern
457	Medium	Circular Array Loop
459	Easy	Repeated Substring Pattern
467	Medium	Unique Substrings in Wraparound String
468	Medium	Validate IP Address
469	Medium	Convex Polygon
474	Medium	Ones and Zeroes
475	Medium	Heaters
477	Medium	Total Hamming Distance
481	Medium	Magical String
486	Medium	Predict the Winner
494	Medium	Target Sum
497	Medium	Random Point in Non-overlapping Rectangles
498	Medium	Diagonal Traverse
501	Easy	Find Mode in Binary Search Tree
508	Medium	Most Frequent Subtree Sum
509	Easy	Fibonacci Number
513	Medium	Find Bottom Left Tree Value
515	Medium	Find Largest Value in Each Tree Row
516	Medium	Longest Palindromic Subsequence
518	Medium	Coin Change II
519	Medium	Random Flip Matrix
520	Easy	Detect Capital
522	Medium	Longest Uncommon Subsequence II
523	Medium	Continuous Subarray Sum
524	Medium	Longest Word in Dictionary through Deleting
525	Medium	Contiguous Array
528	Medium	Random Pick with Weight
529	Medium	Minesweeper
530	Easy	Minimum Absolute Difference in BST
532	Medium	K-diff Pairs in an Array
535	Medium	Encode and Decode TinyURL
537	Medium	Complex Number Multiplication
538	Medium	Convert BST to Greater Tree
539	Medium	Minimum Time Difference
540	Medium	Single Element in a Sorted Array
542	Medium	01 Matrix
543	Easy	Diameter of Binary Tree
547	Medium	Number of Provinces
553	Medium	Optimal Division
554	Medium	Brick Wall
556	Medium	Next Greater Element III
557	Easy	Reverse Words in a String III
560	Medium	Subarray Sum Equals K
565	Medium	Array Nesting
567	Medium	Permutation in String
572	Easy	Subtree of Another Tree
576	Medium	Out of Boundary Paths
581	Medium	Shortest Unsorted Continuous Subarray
583	Medium	Delete Operation for Two Strings
589	Easy	N-ary Tree Preorder Traversal
592	Medium	Fraction Addition and Subtraction
593	Medium	Valid Square
606	Medium	Construct String from Binary Tree
609	Medium	Find Duplicate File in System
611	Medium	Valid Triangle Number
617	Easy	Merge Two Binary Trees
621	Medium	Task Scheduler
622	Medium	Design Circular Queue
623	Medium	Add One Row to Tree
624	Medium	Maximum Distance in Arrays
627	Easy	Swap Salary
633	Medium	Sum of Square Numbers
636	Medium	Exclusive Time of Functions
638	Medium	Shopping Offers
640	Medium	Solve the Equation
641	Medium	Design Circular Deque
645	Easy	Set Mismatch
646	Medium	Maximum Length of Pair Chain
647	Medium	Palindromic Substrings
648	Medium	Replace Words
649	Medium	Dota2 Senate
652	Medium	Find Duplicate Subtrees
654	Medium	Maximum Binary Tree
655	Medium	Print Binary Tree
658	Medium	Find K Closest Elements
659	Medium	Split Array into Consecutive Subsequences
662	Medium	Maximum Width of Binary Tree
667	Medium	Beautiful Arrangement II
669	Medium	Trim a Binary Search Tree
670	Medium	Maximum Swap
672	Medium	Bulb Switcher II
673	Medium	Number of Longest Increasing Subsequence
676	Medium	Implement Magic Dictionary
677	Medium	Map Sum Pairs
678	Medium	Valid Parenthesis String
684	Medium	Redundant Connection
686	Medium	Repeated String Match
687	Medium	Longest Univalue Path
688	Medium	Knight Probability in Chessboard
692	Medium	Top K Frequent Words
695	Medium	Max Area of Island
698	Medium	Partition to K Equal Sum Subsets
703	Easy	Kth Largest Element in a Stream
704	Easy	Binary Search
705	Easy	Design HashSet
707	Medium	Design Linked List
712	Medium	Minimum ASCII Delete Sum for Two Strings
713	Medium	Subarray Product Less Than K
714	Medium	Best Time to Buy and Sell Stock with Transaction Fee
718	Medium	Maximum Length of Repeated Subarray
720	Medium	Longest Word in Dictionary
721	Medium	Accounts Merge
722	Medium	Remove Comments
724	Easy	Find Pivot Index
725	Medium	Split Linked List in Parts
729	Medium	My Calendar I
731	Medium	My Calendar II
733	Easy	Flood Fill
735	Medium	Asteroid Collision
738	Medium	Monotone Increasing Digits
739	Medium	Daily Temperatures
740	Medium	Delete and Earn
743	Medium	Network Delay Time
744	Easy	Find Smallest Letter Greater Than Target
746	Easy	Min Cost Climbing Stairs
752	Medium	Open the Lock
754	Medium	Reach a Number
756	Medium	Pyramid Transition Matrix
762	Easy	Prime Number of Set Bits in Binary Representation
763	Medium	Partition Labels
764	Medium	Largest Plus Sign
767	Medium	Reorganize String
769	Medium	Max Chunks To Make Sorted
775	Medium	Global and Local Inversions
777	Medium	Swap Adjacent in LR String
779	Medium	K-th Symbol in Grammar
781	Medium	Rabbits in Forest
784	Medium	Letter Case Permutation
785	Medium	Is Graph Bipartite?
786	Medium	K-th Smallest Prime Fraction
787	Medium	Cheapest Flights Within K Stops
788	Medium	Rotated Digits
789	Medium	Escape The Ghosts
790	Medium	Domino and Tromino Tiling
791	Medium	Custom Sort String
792	Medium	Number of Matching Subsequences
794	Medium	Valid Tic-Tac-Toe State
795	Medium	Number of Subarrays with Bounded Maximum
797	Medium	All Paths From Source to Target
799	Medium	Champagne Tower
802	Medium	Find Eventual Safe States
807	Medium	Max Increase to Keep City Skyline
808	Medium	Soup Servings
809	Medium	Expressive Words
811	Medium	Subdomain Visit Count
813	Medium	Largest Sum of Averages
814	Medium	Binary Tree Pruning
816	Medium	Ambiguous Coordinates
817	Medium	Linked List Components
820	Medium	Short Encoding of Words
822	Medium	Card Flipping Game
823	Medium	Binary Trees With Factors
824	Easy	Goat Latin
825	Medium	Friends Of Appropriate Ages
826	Medium	Most Profit Assigning Work
831	Medium	Masking Personal Information
833	Medium	Find And Replace in String
835	Medium	Image Overlap
836	Easy	Rectangle Overlap
837	Medium	New 21 Game
838	Medium	Push Dominoes
840	Medium	Magic Squares In Grid
841	Medium	Keys and Rooms
842	Medium	Split Array into Fibonacci Sequence
844	Easy	Backspace String Compare
845	Medium	Longest Mountain in Array
846	Medium	Hand of Straights
848	Medium	Shifting Letters
851	Medium	Loud and Rich
852	Medium	Peak Index in a Mountain Array
853	Medium	Car Fleet
855	Medium	Exam Room
856	Medium	Score of Parentheses
858	Medium	Mirror Reflection
859	Easy	Buddy Strings
860	Easy	Lemonade Change
861	Medium	Score After Flipping Matrix
863	Medium	All Nodes Distance K in Binary Tree
865	Medium	Smallest Subtree with all the Deepest Nodes
866	Medium	Prime Palindrome
867	Easy	Transpose Matrix
868	Easy	Binary Gap
869	Medium	Reordered Power of 2
870	Medium	Advantage Shuffle
872	Easy	Leaf-Similar Trees
873	Medium	Length of Longest Fibonacci Subsequence
875	Medium	Koko Eating Bananas
876	Easy	Middle of the Linked List
877	Medium	Stone Game
880	Medium	Decoded String at Index
881	Medium	Boats to Save People
885	Medium	Spiral Matrix III
886	Medium	Possible Bipartition
889	Medium	Construct Binary Tree from Preorder and Postorder Traversal
893	Medium	Groups of Special-Equivalent Strings
894	Medium	All Possible Full Binary Trees
896	Easy	Monotonic Array
898	Medium	Bitwise ORs of Subarrays
900	Medium	RLE Iterator
901	Medium	Online Stock Span
904	Medium	Fruit Into Baskets
907	Medium	Sum of Subarray Minimums
909	Medium	Snakes and Ladders
910	Medium	Smallest Range II
911	Medium	Online Election
915	Medium	Partition Array into Disjoint Intervals
916	Medium	Word Subsets
918	Medium	Maximum Sum Circular Subarray
919	Medium	Complete Binary Tree Inserter
921	Medium	Minimum Add to Make Parentheses Valid
925	Easy	Long Pressed Name
926	Medium	Flip String to Monotone Increasing
930	Medium	Binary Subarrays With Sum
931	Medium	Minimum Falling Path Sum
934	Medium	Shortest Bridge
935	Medium	Knight Dialer
938	Easy	Range Sum of BST
939	Medium	Minimum Area Rectangle
945	Medium	Minimum Increment to Make Array Unique
946	Medium	Validate Stack Sequences
947	Medium	Most Stones Removed with Same Row or Column
948	Medium	Bag of Tokens
949	Medium	Largest Time for Given Digits
950	Medium	Reveal Cards In Increasing Order
951	Medium	Flip Equivalent Binary Trees
954	Medium	Array of Doubled Pairs
955	Medium	Delete Columns to Make Sorted II
957	Medium	Prison Cells After N Days
958	Medium	Check Completeness of a Binary Tree
959	Medium	Regions Cut By Slashes
962	Medium	Maximum Width Ramp
963	Medium	Minimum Area Rectangle II
966	Medium	Vowel Spellchecker
967	Medium	Numbers With Same Consecutive Differences
969	Medium	Pancake Sorting
970	Medium	Powerful Integers
971	Medium	Flip Binary Tree To Match Preorder Traversal
973	Medium	K Closest Points to Origin
974	Medium	Subarray Sums Divisible by K
977	Easy	Squares of a Sorted Array
978	Medium	Longest Turbulent Subarray
979	Medium	Distribute Coins in Binary Tree
981	Medium	Time Based Key-Value Store
983	Medium	Minimum Cost For Tickets
984	Medium	String Without AAA or BBB
985	Medium	Sum of Even Numbers After Queries
988	Medium	Smallest String Starting From Leaf
990	Medium	Satisfiability of Equality Equations
991	Medium	Broken Calculator
994	Medium	Rotting Oranges
997	Easy	Find the Town Judge
998	Medium	Maximum Binary Tree II
1002	Easy	Find Common Characters
1003	Medium	Check If Word Is Valid After Substitutions
1004	Medium	Max Consecutive Ones III
1005	Easy	Maximize Sum Of Array After K Negations
1006	Medium	Clumsy Factorial
1007	Medium	Minimum Domino Rotations For Equal Row
1008	Medium	Construct Binary Search Tree from Preorder Traversal
1010	Medium	Pairs of Songs With Total Durations Divisible by 60
1011	Medium	Capacity To Ship Packages Within D Days
1014	Medium	Best Sightseeing Pair
1015	Medium	Smallest Integer Divisible by K
1016	Medium	Binary String With Substrings Representing 1 To N
1017	Medium	Convert to Base -2
1019	Medium	Next Greater Node In Linked List
1020	Medium	Number of Enclaves
1023	Medium	Camelcase Matching
1024	Medium	Video Stitching
1026	Medium	Maximum Difference Between Node and Ancestor
1027	Medium	Longest Arithmetic Subsequence
1029	Medium	Two City Scheduling
1031	Medium	Maximum Sum of Two Non-Overlapping Subarrays
1033	Medium	Moving Stones Until Consecutive
1034	Medium	Coloring A Border
1035	Medium	Uncrossed Lines
1038	Medium	Binary Search Tree to Greater Sum Tree
1039	Medium	Minimum Score Triangulation of Polygon
1040	Medium	Moving Stones Until Consecutive II
1042	Medium	Flower Planting With No Adjacent
1043	Medium	Partition Array for Maximum Sum
1046	Easy	Last Stone Weight
1048	Medium	Longest String Chain
1049	Medium	Last Stone Weight II
1051	Easy	Height Checker
1052	Medium	Grumpy Bookstore Owner
1053	Medium	Previous Permutation With One Swap
1054	Medium	Distant Barcodes
1061	Medium	Lexicographically Smallest Equivalent String
1072	Medium	Flip Columns For Maximum Number of Equal Rows
1073	Medium	Adding Two Negabinary Numbers
1079	Medium	Letter Tile Possibilities
1080	Medium	Insufficient Nodes in Root to Leaf Paths
1081	Medium	Smallest Subsequence of Distinct Characters
1090	Medium	Largest Values From Labels
1091	Medium	Shortest Path in Binary Matrix
1093	Medium	Statistics from a Large Sample
1104	Medium	Path In Zigzag Labelled Binary Tree
1105	Medium	Filling Bookcase Shelves
1109	Medium	Corporate Flight Bookings
1110	Medium	Delete Nodes And Return Forest
1111	Medium	Maximum Nesting Depth of Two Valid Parentheses Strings
1114	Easy	Print in Order
1115	Medium	Print FooBar Alternately
1116	Medium	Print Zero Even Odd
1122	Easy	Relative Sort Array
1123	Medium	Lowest Common Ancestor of Deepest Leaves
1124	Medium	Longest Well-Performing Interval
1129	Medium	Shortest Path with Alternating Colors
1130	Medium	Minimum Cost Tree From Leaf Values
1131	Medium	Maximum of Absolute Value Expression
1137	Easy	N-th Tribonacci Number
1138	Medium	Alphabet Board Path
1139	Medium	Largest 1-Bordered Square
1140	Medium	Stone Game II
1143	Medium	Longest Common Subsequence
1144	Medium	Decrease Elements To Make Array Zigzag
1145	Medium	Binary Tree Coloring Game
1146	Medium	Snapshot Array
1155	Medium	Number of Dice Rolls With Target Sum
1156	Medium	Swap For Longest Repeated Character Substring
1160	Easy	Find Words That Can Be Formed by Characters
1161	Medium	Maximum Level Sum of a Binary Tree
1162	Medium	As Far from Land as Possible
1170	Medium	Compare Strings by Frequency of the Smallest Character
1171	Medium	Remove Zero Sum Consecutive Nodes from Linked List
1177	Medium	Can Make Palindrome from Substring
1186	Medium	Maximum Subarray Sum with One Deletion
1190	Medium	Reverse Substrings Between Each Pair of Parentheses
1195	Medium	Fizz Buzz Multithreaded
1201	Medium	Ugly Number III
1202	Medium	Smallest String With Swaps
1207	Easy	Unique Number of Occurrences
1208	Medium	Get Equal Substrings Within Budget
1209	Medium	Remove All Adjacent Duplicates in String II
1218	Medium	Longest Arithmetic Subsequence of Given Difference
1219	Medium	Path with Maximum Gold
1222	Medium	Queens That Can Attack the King
1226	Medium	The Dining Philosophers
1227	Medium	Airplane Seat Assignment Probability
1232	Easy	Check If It Is a Straight Line
1233	Medium	Remove Sub-Folders from the Filesystem
1234	Medium	Replace the Substring for Balanced String
1237	Medium	Find Positive Integer Solution for a Given Equation
1238	Medium	Circular Permutation in Binary Representation
1239	Medium	Maximum Length of a Concatenated String with Unique Characters
1247	Medium	Minimum Swaps to Make Strings Equal
1248	Medium	Count Number of Nice Subarrays
1249	Medium	Minimum Remove to Make Valid Parentheses
1253	Medium	Reconstruct a 2-Row Binary Matrix
1254	Medium	Number of Closed Islands
1261	Medium	Find Elements in a Contaminated Binary Tree
1262	Medium	Greatest Sum Divisible by Three
1266	Easy	Minimum Time Visiting All Points
1267	Medium	Count Servers that Communicate
1268	Medium	Search Suggestions System
1276	Medium	Number of Burgers with No Waste of Ingredients
1277	Medium	Count Square Submatrices with All Ones
1282	Medium	Group the People Given the Group Size They Belong To
1283	Medium	Find the Smallest Divisor Given a Threshold
1286	Medium	Iterator for Combination
1287	Easy	Element Appearing More Than 25% In Sorted Array
1288	Medium	Remove Covered Intervals
1292	Medium	Maximum Side Length of a Square with Sum Less than or Equal to Threshold
1296	Medium	Divide Array in Sets of K Consecutive Numbers
1297	Medium	Maximum Number of Occurrences of a Substring
1300	Medium	Sum of Mutated Array Closest to Target
1302	Medium	Deepest Leaves Sum
1305	Medium	All Elements in Two Binary Search Trees
1306	Medium	Jump Game III
1310	Medium	XOR Queries of a Subarray
1311	Medium	Get Watched Videos by Your Friends
1314	Medium	Matrix Block Sum
1315	Medium	Sum of Nodes with Even-Valued Grandparent
1318	Medium	Minimum Flips to Make a OR b Equal to c
1319	Medium	Number of Operations to Make Network Connected
1325	Medium	Delete Leaves With a Given Value
1328	Medium	Break a Palindrome
1329	Medium	Sort the Matrix Diagonally
1333	Medium	Filter Restaurants by Vegan-Friendly, Price and Distance
1334	Medium	Find the City With the Smallest Number of Neighbors at a Threshold Distance
1337	Easy	The K Weakest Rows in a Matrix
1338	Medium	Reduce Array Size to The Half
1339	Medium	Maximum Product of Splitted Binary Tree
1343	Medium	Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold
1344	Medium	Angle Between Hands of a Clock
1347	Medium	Minimum Number of Steps to Make Two Strings Anagram
1348	Medium	Tweet Counts Per Frequency
1351	Easy	Count Negative Numbers in a Sorted Matrix
1352	Medium	Product of the Last K Numbers
1353	Medium	Maximum Number of Events That Can Be Attended
1356	Easy	Sort Integers by The Number of 1 Bits
1357	Medium	Apply Discount Every n Orders
1358	Medium	Number of Substrings Containing All Three Characters
1361	Medium	Validate Binary Tree Nodes
1362	Medium	Closest Divisors
1366	Medium	Rank Teams by Votes
1367	Medium	Linked List in Binary Tree
1371	Medium	Find the Longest Substring Containing Vowels in Even Counts
1372	Medium	Longest ZigZag Path in a Binary Tree
1376	Medium	Time Needed to Inform All Employees
1379	Easy	Find a Corresponding Node of a Binary Tree in a Clone of That Tree
1380	Easy	Lucky Numbers in a Matrix
1381	Medium	Design a Stack With Increment Operation
1382	Medium	Balance a Binary Search Tree
1386	Medium	Cinema Seat Allocation
1387	Medium	Sort Integers by The Power Value
1389	Easy	Create Target Array in the Given Order
1390	Medium	Four Divisors
1391	Medium	Check if There is a Valid Path in a Grid
1395	Medium	Count Number of Teams
1396	Medium	Design Underground System
1400	Medium	Construct K Palindrome Strings
1401	Medium	Circle and Rectangle Overlapping
1404	Medium	Number of Steps to Reduce a Number in Binary Representation to One
1405	Medium	Longest Happy String
1409	Medium	Queries on a Permutation With Key
1410	Medium	HTML Entity Parser
1414	Medium	Find the Minimum Number of Fibonacci Numbers Whose Sum Is K
1415	Medium	The k-th Lexicographical String of All Happy Strings of Length n
1418	Medium	Display Table of Food Orders in a Restaurant
1419	Medium	Minimum Number of Frogs Croaking
1422	Easy	Maximum Score After Splitting a String
1423	Medium	Maximum Points You Can Obtain from Cards
1424	Medium	Diagonal Traverse II
1431	Easy	Kids With the Greatest Number of Candies
1432	Medium	Max Difference You Can Get From Changing an Integer
1433	Medium	Check If a String Can Break Another String
1436	Easy	Destination City
1438	Medium	Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit
1441	Medium	Build an Array With Stack Operations
1442	Medium	Count Triplets That Can Form Two Arrays of Equal XOR
1443	Medium	Minimum Time to Collect All Apples in a Tree
1447	Medium	Simplified Fractions
1448	Medium	Count Good Nodes in Binary Tree
1451	Medium	Rearrange Words in a Sentence
1452	Medium	People Whose List of Favorite Companies Is Not a Subset of Another List
1456	Medium	Maximum Number of Vowels in a Substring of Given Length
1457	Medium	Pseudo-Palindromic Paths in a Binary Tree
1461	Medium	Check If a String Contains All Binary Codes of Size K
1462	Medium	Course Schedule IV
1464	Easy	Maximum Product of Two Elements in an Array
1465	Medium	Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts
1466	Medium	Reorder Routes to Make All Paths Lead to the City Zero
1471	Medium	The k Strongest Values in an Array
1472	Medium	Design Browser History
1476	Medium	Subrectangle Queries
1477	Medium	Find Two Non-overlapping Sub-arrays Each With Target Sum
1480	Easy	Running Sum of 1d Array
1481	Medium	Least Number of Unique Integers after K Removals
1482	Medium	Minimum Number of Days to Make m Bouquets
1487	Medium	Making File Names Unique
1488	Medium	Avoid Flood in The City
1491	Easy	Average Salary Excluding the Minimum and Maximum Salary
1492	Medium	The kth Factor of n
1493	Medium	Longest Subarray of 1's After Deleting One Element
1496	Easy	Path Crossing
1497	Medium	Check If Array Pairs Are Divisible by k
1498	Medium	Number of Subsequences That Satisfy the Given Sum Condition
1502	Easy	Can Make Arithmetic Progression From Sequence
1503	Medium	Last Moment Before All Ants Fall Out of a Plank
1504	Medium	Count Submatrices With All Ones
1508	Medium	Range Sum of Sorted Subarray Sums
1509	Medium	Minimum Difference Between Largest and Smallest Value in Three Moves
1512	Easy	Number of Good Pairs
1513	Medium	Number of Substrings With Only 1s
1514	Medium	Path with Maximum Probability
1519	Medium	Number of Nodes in the Sub-Tree With the Same Label
1524	Medium	Number of Sub-arrays With Odd Sum
1525	Medium	Number of Good Ways to Split a String
1529	Medium	Minimum Suffix Flips
1530	Medium	Number of Good Leaf Nodes Pairs
1535	Medium	Find the Winner of an Array Game
1536	Medium	Minimum Swaps to Arrange a Binary Grid
1540	Medium	Can Convert String in K Moves
1541	Medium	Minimum Insertions to Balance a Parentheses String
1545	Medium	Find Kth Bit in Nth Binary String
1546	Medium	Maximum Number of Non-Overlapping Subarrays With Sum Equals Target
1551	Medium	Minimum Operations to Make Array Equal
1552	Medium	Magnetic Force Between Two Balls
1557	Medium	Minimum Number of Vertices to Reach All Nodes
1559	Medium	Detect Cycles in 2D Grid
1561	Medium	Maximum Number of Coins You Can Get
1562	Medium	Find Latest Group of Size M
1567	Medium	Maximum Length of Subarray With Positive Product
1572	Easy	Matrix Diagonal Sum
1573	Medium	Number of Ways to Split a String
1577	Medium	Number of Ways Where Square of Number Is Equal to Product of Two Numbers
1578	Medium	Minimum Time to Make Rope Colorful
1582	Easy	Special Positions in a Binary Matrix
1583	Medium	Count Unhappy Friends
1584	Medium	Min Cost to Connect All Points
1589	Medium	Maximum Sum Obtained of Any Permutation
1590	Medium	Make Sum Divisible by P
1593	Medium	Split a String Into the Max Number of Unique Substrings
1594	Medium	Maximum Non Negative Product in a Matrix
1598	Easy	Crawler Log Folder
1599	Medium	Maximum Profit of Operating a Centennial Wheel
1600	Medium	Throne Inheritance
1603	Easy	Design Parking System
1604	Medium	Alert Using Same Key-Card Three or More Times in a One Hour Period
1605	Medium	Find Valid Matrix Given Row and Column Sums
1609	Medium	Even Odd Tree
1615	Medium	Maximal Network Rank
1616	Medium	Split Two Strings to Make Palindrome
1620	Medium	Coordinate With Maximum Network Quality
1621	Medium	Number of Sets of K Non-Overlapping Line Segments
1624	Easy	Largest Substring Between Two Equal Characters
1625	Medium	Lexicographically Smallest String After Applying Operations
1626	Medium	Best Team With No Conflicts
1630	Medium	Arithmetic Subarrays
1631	Medium	Path With Minimum Effort
1637	Easy	Widest Vertical Area Between Two Points Containing No Points
1638	Medium	Count Substrings That Differ by One Character
1642	Medium	Furthest Building You Can Reach
1646	Easy	Get Maximum in Generated Array
1647	Medium	Minimum Deletions to Make Character Frequencies Unique
1648	Medium	Sell Diminishing-Valued Colored Balls
1652	Easy	Defuse the Bomb
1653	Medium	Minimum Deletions to Make String Balanced
1656	Easy	Design an Ordered Stream
1657	Medium	Determine if Two Strings Are Close
1658	Medium	Minimum Operations to Reduce X to Zero
1662	Easy	Check If Two String Arrays are Equivalent
1663	Medium	Smallest String With A Given Numeric Value
1664	Medium	Ways to Make a Fair Array
1668	Easy	Maximum Repeating Substring
1669	Medium	Merge In Between Linked Lists
1670	Medium	Design Front Middle Back Queue
1672	Easy	Richest Customer Wealth
1673	Medium	Find the Most Competitive Subsequence
1674	Medium	Minimum Moves to Make Array Complementary
1678	Easy	Goal Parser Interpretation
1680	Medium	Concatenation of Consecutive Binary Numbers
1684	Easy	Count the Number of Consistent Strings
1685	Medium	Sum of Absolute Differences in a Sorted Array
1686	Medium	Stone Game VI
1688	Easy	Count of Matches in Tournament
1690	Medium	Stone Game VII
1694	Easy	Reformat Phone Number
1695	Medium	Maximum Erasure Value
1696	Medium	Jump Game VI
1700	Easy	Number of Students Unable to Eat Lunch
1701	Medium	Average Waiting Time
1702	Medium	Maximum Binary String After Change
1704	Easy	Determine if String Halves Are Alike
1705	Medium	Maximum Number of Eaten Apples
1706	Medium	Where Will the Ball Fall
1712	Medium	Ways to Split Array Into Three Subarrays
1716	Easy	Calculate Money in Leetcode Bank
1717	Medium	Maximum Score From Removing Substrings
1718	Medium	Construct the Lexicographically Largest Valid Sequence
1720	Easy	Decode XORed Array
1721	Medium	Swapping Nodes in a Linked List
1722	Medium	Minimize Hamming Distance After Swap Operations
1725	Easy	Number Of Rectangles That Can Form The Largest Square
1726	Medium	Tuple with Same Product
1727	Medium	Largest Submatrix With Rearrangements
1732	Easy	Find the Highest Altitude
1733	Medium	Minimum Number of People to Teach
1734	Medium	Decode XORed Permutation
1736	Easy	Latest Time by Replacing Hidden Digits
1737	Medium	Change Minimum Characters to Satisfy One of Three Conditions
1738	Medium	Find Kth Largest XOR Coordinate Value
1742	Easy	Maximum Number of Balls in a Box
1743	Medium	Restore the Array From Adjacent Pairs
1744	Medium	Can You Eat Your Favorite Candy on Your Favorite Day?
1748	Easy	Sum of Unique Elements
1749	Medium	Maximum Absolute Sum of Any Subarray
1750	Medium	Minimum Length of String After Deleting Similar Ends
1752	Easy	Check if Array Is Sorted and Rotated
1753	Medium	Maximum Score From Removing Stones
1754	Medium	Largest Merge Of Two Strings
1758	Easy	Minimum Changes To Make Alternating Binary String
1759	Medium	Count Number of Homogenous Substrings
1760	Medium	Minimum Limit of Balls in a Bag
1763	Easy	Longest Nice Substring
1764	Medium	Form Array by Concatenating Subarrays of Another Array
1765	Medium	Map of Highest Peak
1768	Easy	Merge Strings Alternately
1769	Medium	Minimum Number of Operations to Move All Balls to Each Box
1773	Easy	Count Items Matching a Rule
1774	Medium	Closest Dessert Cost
1775	Medium	Equal Sum Arrays With Minimum Number of Operations
1784	Easy	Check if Binary String Has at Most One Segment of Ones
1785	Medium	Minimum Elements to Add to Form a Given Sum
1786	Medium	Number of Restricted Paths From First to Last Node
1790	Easy	Check if One String Swap Can Make Strings Equal
1791	Easy	Find Center of Star Graph
1792	Medium	Maximum Average Pass Ratio
1796	Easy	Second Largest Digit in a String
1797	Medium	Design Authentication Manager
1798	Medium	Maximum Number of Consecutive Values You Can Make
1800	Easy	Maximum Ascending Subarray Sum
1801	Medium	Number of Orders in the Backlog
1802	Medium	Maximum Value at a Given Index in a Bounded Array
1805	Easy	Number of Different Integers in a String
1806	Medium	Minimum Number of Operations to Reinitialize a Permutation
1807	Medium	Evaluate the Bracket Pairs of a String
1812	Easy	Determine Color of a Chessboard Square
1813	Medium	Sentence Similarity III
1814	Medium	Count Nice Pairs in an Array
1816	Easy	Truncate Sentence
1817	Medium	Finding the Users Active Minutes
1818	Medium	Minimum Absolute Sum Difference
1822	Easy	Sign of the Product of an Array
1823	Medium	Find the Winner of the Circular Game
1824	Medium	Minimum Sideway Jumps
1827	Easy	Minimum Operations to Make the Array Increasing
1828	Medium	Queries on Number of Points Inside a Circle
1829	Medium	Maximum XOR for Each Query
1832	Easy	Check if the Sentence Is Pangram
1833	Medium	Maximum Ice Cream Bars
1834	Medium	Single-Threaded CPU
1837	Easy	Sum of Digits in Base K
1838	Medium	Frequency of the Most Frequent Element
1839	Medium	Longest Substring Of All Vowels in Order
1844	Easy	Replace All Digits with Characters
1845	Medium	Seat Reservation Manager
1846	Medium	Maximum Element After Decreasing and Rearranging
1848	Easy	Minimum Distance to the Target Element
1849	Medium	Splitting a String Into Descending Consecutive Values
1850	Medium	Minimum Adjacent Swaps to Reach the Kth Smallest Number
1854	Easy	Maximum Population Year
1855	Medium	Maximum Distance Between a Pair of Values
1859	Easy	Sorting the Sentence
1860	Medium	Incremental Memory Leak
1861	Medium	Rotating the Box
1863	Easy	Sum of All Subset XOR Totals
1865	Medium	Finding Pairs With a Certain Sum
1869	Easy	Longer Contiguous Segments of Ones than Zeros
1870	Medium	Minimum Speed to Arrive on Time
1871	Medium	Jump Game VII
1876	Easy	Substrings of Size Three with Distinct Characters
1877	Medium	Minimize Maximum Pair Sum in Array
1878	Medium	Get Biggest Three Rhombus Sums in a Grid
1880	Easy	Check if Word Equals Summation of Two Words
1882	Medium	Process Tasks Using Servers
1886	Easy	Determine Whether Matrix Can Be Obtained By Rotation
1887	Medium	Reduction Operations to Make the Array Elements Equal
1888	Medium	Minimum Number of Flips to Make the Binary String Alternating
1893	Easy	Check if All the Integers in a Range Are Covered
1898	Medium	Maximum Number of Removable Characters
1899	Medium	Merge Triplets to Form Target Triplet
1901	Medium	Find a Peak Element II
1903	Easy	Largest Odd Number in String
1904	Medium	The Number of Full Rounds You Have Played
1905	Medium	Count Sub Islands
1906	Medium	Minimum Absolute Difference Queries
1910	Medium	Remove All Occurrences of a Substring
1911	Medium	Maximum Alternating Subsequence Sum
1913	Easy	Maximum Product Difference Between Two Pairs
1914	Medium	Cyclically Rotating a Grid
1915	Medium	Number of Wonderful Substrings
1920	Easy	Build Array from Permutation
1921	Medium	Eliminate Maximum Number of Monsters
1925	Easy	Count Square Sum Triples
1926	Medium	Nearest Exit from Entrance in Maze
1929	Easy	Concatenation of Array
1930	Medium	Unique Length-3 Palindromic Subsequences
1935	Easy	Maximum Number of Words You Can Type
1936	Medium	Add Minimum Number of Rungs
1937	Medium	Maximum Number of Points with Cost
1941	Easy	Check if All Characters Have Equal Number of Occurrences
1942	Medium	The Number of the Smallest Unoccupied Chair
1943	Medium	Describe the Painting
1945	Easy	Sum of Digits of String After Convert
1947	Medium	Maximum Compatibility Score Sum
1952	Easy	Three Divisors
1957	Easy	Delete Characters to Make Fancy String
1958	Medium	Check if Move is Legal
1959	Medium	Minimum Total Space Wasted With K Resizing Operations
1961	Easy	Check If String Is a Prefix of Array
1962	Medium	Remove Stones to Minimize the Total
1963	Medium	Minimum Number of Swaps to Make the String Balanced
1968	Medium	Array With Elements Not Equal to Average of Neighbors
1969	Medium	Minimum Non-Zero Product of the Array Elements
1971	Easy	Find if Path Exists in Graph
1974	Easy	Minimum Time to Type Word Using Special Typewriter
1975	Medium	Maximum Matrix Sum
1976	Medium	Number of Ways to Arrive at Destination
1979	Easy	Find Greatest Common Divisor of Array
1980	Medium	Find Unique Binary String
1981	Medium	Minimize the Difference Between Target and Chosen Elements
1984	Easy	Minimum Difference Between Highest and Lowest of K Scores
1985	Medium	Find the Kth Largest Integer in the Array
1986	Medium	Minimum Number of Work Sessions to Finish the Tasks
1991	Easy	Find the Middle Index in Array
1992	Medium	Find All Groups of Farmland
1993	Medium	Operations on Tree
1995	Easy	Count Special Quadruplets
1996	Medium	The Number of Weak Characters in the Game
1997	Medium	First Day Where You Have Been in All the Rooms
2000	Easy	Reverse Prefix of Word
2001	Medium	Number of Pairs of Interchangeable Rectangles
2002	Medium	Maximum Product of the Length of Two Palindromic Subsequences
2006	Easy	Count Number of Pairs With Absolute Difference K
2007	Medium	Find Original Array From Doubled Array
2008	Medium	Maximum Earnings From Taxi
2011	Easy	Final Value of Variable After Performing Operations
2012	Medium	Sum of Beauty in the Array
2013	Medium	Detect Squares
2016	Easy	Maximum Difference Between Increasing Elements
2017	Medium	Grid Game
2018	Medium	Check if Word Can Be Placed In Crossword
2022	Easy	Convert 1D Array Into 2D Array
2023	Medium	Number of Pairs of Strings With Concatenation Equal to Target
2024	Medium	Maximize the Confusion of an Exam
2027	Easy	Minimum Moves to Convert String
2028	Medium	Find Missing Observations
2029	Medium	Stone Game IX
2033	Medium	Minimum Operations to Make a Uni-Value Grid
2034	Medium	Stock Price Fluctuation
2037	Easy	Minimum Number of Moves to Seat Everyone
2038	Medium	Remove Colored Pieces if Both Neighbors are the Same Color
2039	Medium	The Time When the Network Becomes Idle
2043	Medium	Simple Bank System
2044	Medium	Count Number of Maximum Bitwise-OR Subsets
2047	Easy	Number of Valid Words in a Sentence
2048	Medium	Next Greater Numerically Balanced Number
2049	Medium	Count Nodes With the Highest Score
2053	Easy	Kth Distinct String in an Array
2054	Medium	Two Best Non-Overlapping Events
2055	Medium	Plates Between Candles
2058	Medium	Find the Minimum and Maximum Number of Nodes Between Critical Points
2059	Medium	Minimum Operations to Convert Number
2063	Medium	Vowels of All Substrings
2064	Medium	Minimized Maximum of Products Distributed to Any Store
2068	Easy	Check Whether Two Strings are Almost Equivalent
2069	Medium	Walking Robot Simulation II
2070	Medium	Most Beautiful Item for Each Query
2073	Easy	Time Needed to Buy Tickets
2075	Medium	Decode the Slanted Ciphertext
2079	Medium	Watering Plants
2080	Medium	Range Frequency Queries
2086	Medium	Minimum Number of Food Buckets to Feed the Hamsters
2087	Medium	Minimum Cost Homecoming of a Robot in a Grid
2090	Medium	K Radius Subarray Averages
2091	Medium	Removing Minimum and Maximum From Array
2095	Medium	Delete the Middle Node of a Linked List
2096	Medium	Step-By-Step Directions From a Binary Tree Node to Another
2099	Easy	Find Subsequence of Length K With the Largest Sum
2100	Medium	Find Good Days to Rob the Bank
2101	Medium	Detonate the Maximum Bombs
2104	Medium	Sum of Subarray Ranges
2105	Medium	Watering Plants II
2108	Easy	Find First Palindromic String in the Array
2109	Medium	Adding Spaces to a String
2110	Medium	Number of Smooth Descent Periods of a Stock
2116	Medium	Check if a Parentheses String Can Be Valid
2120	Medium	Execution of All Suffix Instructions Staying in a Grid
2121	Medium	Intervals Between Identical Elements
2124	Easy	Check if All A's Appears Before All B's
2125	Medium	Number of Laser Beams in a Bank
2126	Medium	Destroying Asteroids
2129	Easy	Capitalize the Title
2130	Medium	Maximum Twin Sum of a Linked List
2131	Medium	Longest Palindrome by Concatenating Two Letter Words
2133	Easy	Check if Every Row and Column Contains All Numbers
2134	Medium	Minimum Swaps to Group All 1's Together II
2135	Medium	Count Words Obtained After Adding a Letter
2138	Easy	Divide a String Into Groups of Size k
2139	Medium	Minimum Moves to Reach Target Score
2140	Medium	Solving Questions With Brainpower
2144	Easy	Minimum Cost of Buying Candies With Discount
2145	Medium	Count the Hidden Sequences
2146	Medium	K Highest Ranked Items Within a Price Range
2148	Easy	Count Elements With Strictly Smaller and Greater Elements
2149	Medium	Rearrange Array Elements by Sign
2150	Medium	Find All Lonely Numbers in the Array
2154	Easy	Keep Multiplying Found Values by Two
2155	Medium	All Divisions With the Highest Score of a Binary Array
2160	Easy	Minimum Sum of Four Digit Number After Splitting Digits
2161	Medium	Partition Array According to Given Pivot
2164	Easy	Sort Even and Odd Indices Independently
2165	Medium	Smallest Value of the Rearranged Number
2166	Medium	Design Bitset
2169	Easy	Count Operations to Obtain Zero
2170	Medium	Minimum Operations to Make the Array Alternating
2171	Medium	Removing Minimum Number of Magic Beans
2176	Easy	Count Equal and Divisible Pairs in an Array
2177	Medium	Find Three Consecutive Integers That Sum to a Given Number
2178	Medium	Maximum Split of Positive Even Integers
2180	Easy	Count Integers With Even Digit Sum
2181	Medium	Merge Nodes in Between Zeros
2182	Medium	Construct String With Repeat Limit
2185	Easy	Counting Words With a Given Prefix
2186	Medium	Minimum Number of Steps to Make Two Strings Anagram II
2187	Medium	Minimum Time to Complete Trips
2190	Easy	Most Frequent Number Following Key In an Array
2191	Medium	Sort the Jumbled Numbers
2192	Medium	All Ancestors of a Node in a Directed Acyclic Graph
2194	Easy	Cells in a Range on an Excel Sheet
2196	Medium	Create Binary Tree From Descriptions
2201	Medium	Count Artifacts That Can Be Extracted
2202	Medium	Maximize the Topmost Element After K Moves
2207	Medium	Maximize Number of Subsequences in a String
2208	Medium	Minimum Operations to Halve Array Sum
2210	Easy	Count Hills and Valleys in an Array
2211	Medium	Count Collisions on a Road
2212	Medium	Maximum Points in an Archery Competition
2215	Easy	Find the Difference of Two Arrays
2216	Medium	Minimum Deletions to Make Array Beautiful
2217	Medium	Find Palindrome With Fixed Length
2220	Easy	Minimum Bit Flips to Convert Number
2221	Medium	Find Triangular Sum of an Array
2222	Medium	Number of Ways to Select Buildings
2224	Easy	Minimum Number of Operations to Convert Time
2225	Medium	Find Players With Zero or One Losses
2226	Medium	Maximum Candies Allocated to K Children
2231	Easy	Largest Number After Digit Swaps by Parity
2232	Medium	Minimize Result by Adding Parentheses to Expression
2233	Medium	Maximum Product After K Increments
2235	Easy	Add Two Integers
2236	Easy	Root Equals Sum of Children
2239	Easy	Find Closest Number to Zero
2240	Medium	Number of Ways to Buy Pens and Pencils
2241	Medium	Design an ATM Machine
2243	Easy	Calculate Digit Sum of a String
2245	Medium	Maximum Trailing Zeros in a Cornered Path
2249	Medium	Count Lattice Points Inside a Circle
2250	Medium	Count Number of Rectangles Containing Each Point
2255	Easy	Count Prefixes of a Given String
2256	Medium	Minimum Average Difference
2257	Medium	Count Unguarded Cells in the Grid
2259	Easy	Remove Digit From Number to Maximize Result
2260	Medium	Minimum Consecutive Cards to Pick Up
2261	Medium	K Divisible Elements Subarrays
2264	Easy	Largest 3-Same-Digit Number in String
2265	Medium	Count Nodes Equal to Average of Subtree
2266	Medium	Count Number of Texts
2269	Easy	Find the K-Beauty of a Number
2270	Medium	Number of Ways to Split Array
2271	Medium	Maximum White Tiles Covered by a Carpet
2273	Easy	Find Resultant Array After Removing Anagrams
2274	Medium	Maximum Consecutive Floors Without Special Floors
2275	Medium	Largest Combination With Bitwise AND Greater Than Zero
2278	Easy	Percentage of Letter in String
2279	Medium	Maximum Bags With Full Capacity of Rocks
2280	Medium	Minimum Lines to Represent a Line Chart
2283	Easy	Check if Number Has Equal Digit Count and Digit Value
2284	Medium	Sender With Largest Word Count
2287	Easy	Rearrange Characters to Make Target String
2288	Medium	Apply Discount to Prices
2293	Easy	Min Max Game
2295	Medium	Replace Elements in an Array
2299	Easy	Strong Password Checker II
2300	Medium	Successful Pairs of Spells and Potions
2304	Medium	Minimum Path Cost in a Grid
2305	Medium	Fair Distribution of Cookies
2309	Easy	Greatest English Letter in Upper and Lower Case
2311	Medium	Longest Binary Subsequence Less Than or Equal to K
2315	Easy	Count Asterisks
2316	Medium	Count Unreachable Pairs of Nodes in an Undirected Graph
2317	Medium	Maximum XOR After Operations
2319	Easy	Check if Matrix Is X-Matrix
2320	Medium	Count Number of Ways to Place Houses
2325	Easy	Decode the Message
2326	Medium	Spiral Matrix IV
2327	Medium	Number of People Aware of a Secret
2331	Easy	Evaluate Boolean Binary Tree
2332	Medium	The Latest Time to Catch a Bus
2333	Medium	Minimum Sum of Squared Difference
2335	Easy	Minimum Amount of Time to Fill Cups
2336	Medium	Smallest Number in Infinite Set
2337	Medium	Move Pieces to Obtain a String
2341	Easy	Maximum Number of Pairs in Array
2342	Medium	Max Sum of a Pair With Equal Sum of Digits
2343	Medium	Query Kth Smallest Trimmed Number
2347	Easy	Best Poker Hand
2348	Medium	Number of Zero-Filled Subarrays
2349	Medium	Design a Number Container System
2351	Easy	First Letter to Appear Twice
2352	Medium	Equal Row and Column Pairs
2353	Medium	Design a Food Rating System
2357	Easy	Make Array Zero by Subtracting Equal Amounts
2358	Medium	Maximum Number of Groups Entering a Competition
2359	Medium	Find Closest Node to Given Two Nodes
2363	Easy	Merge Similar Items
2364	Medium	Count Number of Bad Pairs
2365	Medium	Task Scheduler II
2367	Easy	Number of Arithmetic Triplets
2368	Medium	Reachable Nodes With Restrictions
2369	Medium	Check if There is a Valid Partition For The Array
2370	Medium	Longest Ideal Subsequence
2373	Easy	Largest Local Values in a Matrix
2374	Medium	Node With Highest Edge Score
2375	Medium	Construct Smallest Number From DI String
2379	Easy	Minimum Recolors to Get K Consecutive Black Blocks
2380	Medium	Time Needed to Rearrange a Binary String
2381	Medium	Shifting Letters II
2383	Easy	Minimum Hours of Training to Win a Competition
2384	Medium	Largest Palindromic Number
2385	Medium	Amount of Time for Binary Tree to Be Infected
2389	Easy	Longest Subsequence With Limited Sum
2390	Medium	Removing Stars From a String
2391	Medium	Minimum Amount of Time to Collect Garbage
2395	Easy	Find Subarrays With Equal Sum
2396	Medium	Strictly Palindromic Number
2397	Medium	Maximum Rows Covered by Columns
2399	Easy	Check Distances Between Same Letters
2400	Medium	Number of Ways to Reach a Position After Exactly k Steps
2401	Medium	Longest Nice Subarray
2404	Easy	Most Frequent Even Element
2405	Medium	Optimal Partition of String
2406	Medium	Divide Intervals Into Minimum Number of Groups
2409	Easy	Count Days Spent Together
2410	Medium	Maximum Matching of Players With Trainers
2411	Medium	Smallest Subarrays With Maximum Bitwise OR
2413	Easy	Smallest Even Multiple
2414	Medium	Length of the Longest Alphabetical Continuous Substring
2415	Medium	Reverse Odd Levels of Binary Tree
2418	Easy	Sort the People
2419	Medium	Longest Subarray With Maximum Bitwise AND
2420	Medium	Find All Good Indices
2423	Easy	Remove Letter To Equalize Frequency
2424	Medium	Longest Uploaded Prefix
2425	Medium	Bitwise XOR of All Pairings
2427	Easy	Number of Common Factors
2428	Medium	Maximum Sum of an Hourglass
2429	Medium	Minimize XOR
2432	Easy	The Employee That Worked on the Longest Task
2433	Medium	Find The Original Array of Prefix Xor
2434	Medium	Using a Robot to Print the Lexicographically Smallest String
2437	Easy	Number of Valid Clock Times
2438	Medium	Range Product Queries of Powers
2439	Medium	Minimize Maximum of Array
2441	Easy	Largest Positive Integer That Exists With Its Negative
2442	Medium	Count Number of Distinct Integers After Reverse Operations
2443	Medium	Sum of Number and Its Reverse
2446	Easy	Determine if Two Events Have Conflict
2447	Medium	Number of Subarrays With GCD Equal to K
2451	Easy	Odd String Difference
2452	Medium	Words Within Two Edits of Dictionary
2453	Medium	Destroy Sequential Targets
2455	Easy	Average Value of Even Numbers That Are Divisible by Three
2456	Medium	Most Popular Video Creator
2457	Medium	Minimum Addition to Make Integer Beautiful
2460	Easy	Apply Operations to an Array
2461	Medium	Maximum Sum of Distinct Subarrays With Length K
2462	Medium	Total Cost to Hire K Workers
2465	Easy	Number of Distinct Averages
2466	Medium	Count Ways To Build Good Strings
2467	Medium	Most Profitable Path in a Tree
2469	Easy	Convert the Temperature
2470	Medium	Number of Subarrays With LCM Equal to K
2471	Medium	Minimum Number of Operations to Sort a Binary Tree by Level
2475	Easy	Number of Unequal Triplets in Array
2476	Medium	Closest Nodes Queries in a Binary Search Tree
2477	Medium	Minimum Fuel Cost to Report to the Capital
2481	Easy	Minimum Cuts to Divide a Circle
2482	Medium	Difference Between Ones and Zeros in Row and Column
2483	Medium	Minimum Penalty for a Shop
2485	Easy	Find the Pivot Integer
2486	Medium	Append Characters to String to Make Subsequence
2487	Medium	Remove Nodes From Linked List
2490	Easy	Circular Sentence
2491	Medium	Divide Players Into Teams of Equal Skill
2492	Medium	Minimum Score of a Path Between Two Cities
2496	Easy	Maximum Value of a String in an Array
2497	Medium	Maximum Star Sum of a Graph
2498	Medium	Frog Jump II
2500	Easy	Delete Greatest Value in Each Row
2501	Medium	Longest Square Streak in an Array
2502	Medium	Design Memory Allocator
2506	Easy	Count Pairs Of Similar Strings
2507	Medium	Smallest Value After Replacing With Sum of Prime Factors
2511	Easy	Maximum Enemy Forts That Can Be Captured
2512	Medium	Reward Top K Students
2513	Medium	Minimize the Maximum of Two Arrays
2515	Easy	Shortest Distance to Target String in a Circular Array
2516	Medium	Take K of Each Character From Left and Right
2517	Medium	Maximum Tastiness of Candy Basket
2520	Easy	Count the Digits That Divide a Number
2521	Medium	Distinct Prime Factors of Product of Array
2522	Medium	Partition String Into Substrings With Values at Most K
2523	Medium	Closest Prime Numbers in Range
2525	Easy	Categorize Box According to Criteria
2526	Medium	Find Consecutive Integers from a Data Stream
2527	Medium	Find Xor-Beauty of Array
2529	Easy	Maximum Count of Positive Integer and Negative Integer
2530	Medium	Maximal Score After Applying K Operations
2531	Medium	Make Number of Distinct Characters Equal
2535	Easy	Difference Between Element Sum and Digit Sum of an Array
2536	Medium	Increment Submatrices by One
2537	Medium	Count the Number of Good Subarrays
2540	Easy	Minimum Common Value
2541	Medium	Minimum Operations to Make Array Equal II
2542	Medium	Maximum Subsequence Score
2544	Easy	Alternating Digit Sum
2545	Medium	Sort the Students by Their Kth Score
2546	Medium	Apply Bitwise Operations to Make Strings Equal
2549	Easy	Count Distinct Numbers on Board
2550	Medium	Count Collisions of Monkeys on a Polygon
2553	Easy	Separate the Digits in an Array
2554	Medium	Maximum Number of Integers to Choose From a Range I
2555	Medium	Maximize Win From Two Segments
2556	Medium	Disconnect Path in a Binary Matrix by at Most One Flip
2558	Easy	Take Gifts From the Richest Pile
2559	Medium	Count Vowel Strings in Ranges
2560	Medium	House Robber IV
2562	Easy	Find the Array Concatenation Value
2563	Medium	Count the Number of Fair Pairs
2564	Medium	Substring XOR Queries
2566	Easy	Maximum Difference by Remapping a Digit
2567	Medium	Minimum Score by Changing Two Elements
2568	Medium	Minimum Impossible OR
2570	Easy	Merge Two 2D Arrays by Summing Values
2571	Medium	Minimum Operations to Reduce an Integer to 0
2572	Medium	Count the Number of Square-Free Subsets
2574	Easy	Left and Right Sum Differences
2575	Medium	Find the Divisibility Array of a String
2576	Medium	Find the Maximum Number of Marked Indices
2578	Easy	Split With Minimum Sum
2579	Medium	Count Total Number of Colored Cells
2580	Medium	Count Ways to Group Overlapping Ranges
2582	Easy	Pass the Pillow
2583	Medium	Kth Largest Sum in a Binary Tree
2586	Easy	Count the Number of Vowel Strings in Range
2587	Medium	Rearrange Array to Maximize Prefix Score
2588	Medium	Count the Number of Beautiful Subarrays
2591	Easy	Distribute Money to Maximum Children
2592	Medium	Maximize Greatness of an Array
2593	Medium	Find Score of an Array After Marking All Elements
2594	Medium	Minimum Time to Repair Cars
2595	Easy	Number of Even and Odd Bits
2596	Medium	Check Knight Tour Configuration
2597	Medium	The Number of Beautiful Subsets
2598	Medium	Smallest Missing Non-negative Integer After Operations
2600	Easy	K Items With the Maximum Sum
2601	Medium	Prime Subtraction Operation
2602	Medium	Minimum Operations to Make All Array Elements Equal
2605	Easy	Form Smallest Number From Two Digit Arrays
2606	Medium	Find the Substring With Maximum Cost
2607	Medium	Make K-Subarray Sums Equal
2609	Easy	Find the Longest Balanced Substring of a Binary String
2610	Medium	Convert an Array Into a 2D Array With Conditions
2611	Medium	Mice and Cheese
2614	Easy	Prime In Diagonal
2615	Medium	Sum of Distances
2616	Medium	Minimize the Maximum Difference of Pairs
2639	Easy	Find the Width of Columns of a Grid
2640	Medium	Find the Score of All Prefixes of an Array
2641	Medium	Cousins in Binary Tree II
2643	Easy	Row With Maximum Ones
2644	Easy	Find the Maximum Divisibility Score
2645	Medium	Minimum Additions to Make Valid String
2651	Easy	Calculate Delayed Arrival Time
2652	Easy	Sum Multiples
2653	Medium	Sliding Subarray Beauty
2654	Medium	Minimum Number of Operations to Make All Array Elements Equal to 1
2656	Easy	Maximum Sum With Exactly K Elements
2657	Medium	Find the Prefix Common Array of Two Arrays
2658	Medium	Maximum Number of Fish in a Grid
2660	Easy	Determine the Winner of a Bowling Game
2661	Medium	First Completely Painted Row or Column
2670	Easy	Find the Distinct Difference Array
2672	Medium	Number of Adjacent Elements With the Same Color
2673	Medium	Make Costs of Paths Equal in a Binary Tree
2678	Easy	Number of Senior Citizens
2679	Medium	Sum in a Matrix
2680	Medium	Maximum OR
2682	Easy	Find the Losers of the Circular Game
2683	Medium	Neighboring Bitwise XOR
2684	Medium	Maximum Number of Moves in a Grid
2685	Medium	Count the Number of Complete Components
2696	Easy	Minimum String Length After Removing Substrings
2697	Easy	Lexicographically Smallest Palindrome
2706	Easy	Buy Two Chocolates
2707	Medium	Extra Characters in a String
2708	Medium	Maximum Strength of a Group
2710	Easy	Remove Trailing Zeros From a String
2711	Medium	Difference of Number of Distinct Values on Diagonals
2712	Medium	Minimum Cost to Make All Characters Equal
2716	Easy	Minimize String Length
2717	Easy	Semi-Ordered Permutation
2718	Medium	Sum of Matrix After Queries
2729	Easy	Check if The Number is Fascinating
2730	Medium	Find the Longest Semi-Repetitive Substring
2731	Medium	Movement of Robots
2733	Easy	Neither Minimum nor Maximum
2734	Medium	Lexicographically Smallest String After Substring Operation
2735	Medium	Collecting Chocolates
2739	Easy	Total Distance Traveled
2740	Medium	Find the Value of the Partition
2741	Medium	Special Permutations
2744	Easy	Find Maximum Number of String Pairs
2746	Medium	Decremental String Concatenation
2747	Medium	Count Zero Request Servers
2748	Easy	Number of Beautiful Pairs
2750	Medium	Ways to Split Array Into Good Subarrays
2760	Easy	Longest Even Odd Subarray With Threshold
2761	Medium	Prime Pairs With Target Sum
2762	Medium	Continuous Subarrays
2765	Easy	Longest Alternating Subarray
2766	Medium	Relocate Marbles
2767	Medium	Partition String Into Minimum Beautiful Substrings
2768	Medium	Number of Black Blocks
2769	Easy	Find the Maximum Achievable Number
2770	Medium	Maximum Number of Jumps to Reach the Last Index
2771	Medium	Longest Non-decreasing Subarray From Two Arrays
2772	Medium	Apply Operations to Make All Array Elements Equal to Zero
2778	Easy	Sum of Squares of Special Elements
2780	Medium	Minimum Index of a Valid Split
2784	Easy	Check if Array is Good
2785	Medium	Sort Vowels in a String
2786	Medium	Visit Array Positions to Maximize Score
2788	Easy	Split Strings by Separator
2789	Medium	Largest Element in an Array after Merge Operations
2798	Easy	Number of Employees Who Met the Target
2799	Medium	Count Complete Subarrays in an Array
2800	Medium	Shortest String That Contains Three Strings
2806	Easy	Account Balance After Rounded Purchase
2807	Medium	Insert Greatest Common Divisors in Linked List
2808	Medium	Minimum Seconds to Equalize a Circular Array
2810	Easy	Faulty Keyboard
2811	Medium	Check if it is Possible to Split Array
2812	Medium	Find the Safest Path in a Grid
2815	Easy	Max Pair Sum in an Array
2816	Medium	Double a Number Represented as a Linked List
2817	Medium	Minimum Absolute Difference Between Elements With Constraint
2824	Easy	Count Pairs Whose Sum is Less than Target
2825	Medium	Make String a Subsequence Using Cyclic Increments
2826	Medium	Sorting Three Groups
2828	Easy	Check if a String Is an Acronym of Words
2829	Medium	Determine the Minimum Sum of a k-avoiding Array
2830	Medium	Maximize the Profit as the Salesman
2831	Medium	Find the Longest Equal Subarray
2833	Easy	Furthest Point From Origin
2839	Easy	Check if Strings Can be Made Equal With Operations I
2840	Medium	Check if Strings Can be Made Equal With Operations II
2841	Medium	Maximum Sum of Almost Unique Subarray
2843	Easy	Count Symmetric Integers
2844	Medium	Minimum Operations to Make a Special Number
2845	Medium	Count of Interesting Subarrays
2848	Easy	Points That Intersect With Cars
2849	Medium	Determine if a Cell Is Reachable at a Given Time
2850	Medium	Minimum Moves to Spread Stones Over Grid
2855	Easy	Minimum Right Shifts to Sort the Array
2856	Medium	Minimum Array Length After Pair Removals
2857	Medium	Count Pairs of Points With Distance k
2859	Easy	Sum of Values at Indices With K Set Bits
2860	Medium	Happy Students
2861	Medium	Maximum Number of Alloys
2864	Easy	Maximum Odd Binary Number
2865	Medium	Beautiful Towers I
2866	Medium	Beautiful Towers II
2869	Easy	Minimum Operations to Collect Elements
2870	Medium	Minimum Number of Operations to Make Array Empty
2871	Medium	Split Array Into Maximum Number of Subarrays
2873	Easy	Maximum Value of an Ordered Triplet I
2874	Medium	Maximum Value of an Ordered Triplet II
2875	Medium	Minimum Size Subarray in Infinite Array
2894	Easy	Divisible and Non-divisible Sums Difference
2895	Medium	Minimum Processing Time
2899	Easy	Last Visited Integers
2900	Easy	Longest Unequal Adjacent Groups Subsequence I
2901	Medium	Longest Unequal Adjacent Groups Subsequence II
2903	Easy	Find Indices With Index and Value Difference I
2904	Medium	Shortest and Lexicographically Smallest Beautiful String
2905	Medium	Find Indices With Index and Value Difference II
2906	Medium	Construct Product Matrix
2908	Easy	Minimum Sum of Mountain Triplets I
2909	Medium	Minimum Sum of Mountain Triplets II
2910	Medium	Minimum Number of Groups to Create a Valid Assignment
2913	Easy	Subarrays Distinct Element Sum of Squares I
2914	Medium	Minimum Number of Changes to Make Binary String Beautiful
2915	Medium	Length of the Longest Subsequence That Sums to Target
2917	Easy	Find the K-or of an Array
2918	Medium	Minimum Equal Sum of Two Arrays After Replacing Zeros
2919	Medium	Minimum Increment Operations to Make Array Beautiful
2923	Easy	Find Champion I
2924	Medium	Find Champion II
2928	Easy	Distribute Candies Among Children I
2932	Easy	Maximum Strong Pair XOR I
2933	Medium	High-Access Employees
2934	Medium	Minimum Operations to Maximize Last Elements in Arrays
2937	Easy	Make Three Strings Equal
2938	Medium	Separate Black and White Balls
2942	Easy	Find Words Containing Character
2943	Medium	Maximize Area of Square Hole in Grid
2944	Medium	Minimum Number of Coins for Fruits
2946	Easy	Matrix Similarity After Cyclic Shifts
2947	Medium	Count Beautiful Substrings I
2948	Medium	Make Lexicographically Smallest Array by Swapping Elements
2951	Easy	Find the Peaks
2952	Medium	Minimum Number of Coins to be Added
2956	Easy	Find Common Elements Between Two Arrays
2957	Medium	Remove Adjacent Almost-Equal Characters
2958	Medium	Length of Longest Subarray With at Most K Frequency
2960	Easy	Count Tested Devices After Test Operations
2961	Medium	Double Modular Exponentiation
2962	Medium	Count Subarrays Where Max Element Appears at Least K Times
2965	Easy	Find Missing and Repeated Values
2966	Medium	Divide Array Into Arrays With Max Difference
2971	Medium	Find Polygon With the Largest Perimeter
3005	Easy	Count Elements With Maximum Frequency
3026	Medium	Maximum Good Subarray Sum
3042	Easy	Count Prefix and Suffix Pairs I
3043	Medium	Find the Length of the Longest Common Prefix
3044	Medium	Most Frequent Prime
3046	Easy	Split the Array
3081	Medium	Replace Question Marks in String to Minimize Its Value
3099	Easy	Harshad Number
3100	Medium	Water Bottles II
3101	Medium	Count Alternating Subarrays
3110	Easy	Score of a String
3120	Easy	Count the Number of Special Characters I
3121	Medium	Count the Number of Special Characters II
3122	Medium	Minimum Number of Operations to Satisfy Conditions
3127	Easy	Make a Square with the Same Color
3128	Medium	Right Triangles
3129	Medium	Find All Possible Stable Binary Arrays I
3136	Easy	Valid Word
3137	Medium	Minimum Number of Operations to Make Word K-Periodic
3138	Medium	Minimum Length of Anagram Concatenation
3146	Easy	Permutation Difference between Two Strings
3162	Easy	Find the Number of Good Pairs I
3163	Medium	String Compression III
3168	Easy	Minimum Number of Chairs in a Waiting Room
3169	Medium	Count Days Without Meetings
3178	Easy	Find the Child Who Has the Ball After K Seconds
3179	Medium	Find the N-th Value After K Seconds
3190	Easy	Find Minimum Operations to Make All Elements Divisible by Three