Leetcode Solutions

As of 20 Feb 2023, this repo is no longer actively maintained.

• 🟢: Easy
• 🟠: Medium
• 🔴: Hard

	ID	Question	Difficulty	Solution
✅	1	Two Sum	🟢	py
✅	2	Add Two Numbers	🟠	py cpp
✅	3	Longest Substring Without Repeating Characters	🟠	py
✅	4	Median of Two Sorted Arrays	🔴	py
✅	5	Longest Palindromic Substring	🟠	py
✅	6	Zigzag Conversion	🟠	py
✅	7	Reverse Integer	🟠	py
✅	8	String to Integer (atoi)	🟠	py
✅	9	Palindrome Number	🟢	py
	10	Regular Expression Matching	🔴
✅	11	Container With Most Water	🟠	py
✅	12	Integer to Roman	🟠	py
✅	13	Roman to Integer	🟢	py
✅	14	Longest Common Prefix	🟢	py
✅	15	3Sum	🟠	py cpp
✅	16	3Sum Closest	🟠	py
✅	17	Letter Combinations of a Phone Number	🟠	py
✅	18	4Sum	🟠	py
✅	19	Remove Nth Node From End of List	🟠	py
✅	20	Valid Parentheses	🟢	py
✅	21	Merge Two Sorted Lists	🟢	py cpp
✅	22	Generate Parentheses	🟠	py
✅	23	Merge k Sorted Lists	🔴	py
✅	24	Swap Nodes in Pairs	🟠	py
✅	25	Reverse Nodes in k-Group	🔴	py
✅	26	Remove Duplicates from Sorted Array	🟢	py
✅	27	Remove Element	🟢	py
✅	28	Find the Index of the First Occurrence in a String	🟠	py java
✅	29	Divide Two Integers	🟠	py
✅	30	Substring with Concatenation of All Words	🔴	cpp
✅	31	Next Permutation	🟠	py
✅	32	Longest Valid Parentheses	🔴	py
✅	33	Search in Rotated Sorted Array	🟠	py
✅	34	Find First and Last Position of Element in Sorted Array	🟠	py
✅	35	Search Insert Position	🟢	py
✅	36	Valid Sudoku	🟠	py
✅	37	Sudoku Solver	🔴	py
✅	38	Count and Say	🟠	py
✅	39	Combination Sum	🟠	py
✅	40	Combination Sum II	🟠	py
✅	41	First Missing Positive	🔴	py cpp
✅	42	Trapping Rain Water	🔴	py
✅	43	Multiply Strings	🟠	py
	44	Wildcard Matching	🔴
✅	45	Jump Game II	🟠	py
✅	46	Permutations	🟠	py
✅	47	Permutations II	🟠	py
✅	48	Rotate Image	🟠	py
✅	49	Group Anagrams	🟠	py
✅	50	Pow(x, n)	🟠	py
✅	51	N-Queens	🔴	py
✅	52	N-Queens II	🔴	py
✅	53	Maximum Subarray	🟠	py
✅	54	Spiral Matrix	🟠	py
✅	55	Jump Game	🟠	py
✅	56	Merge Intervals	🟠	py
✅	57	Insert Interval	🟠	py
✅	58	Length of Last Word	🟢	py
✅	59	Spiral Matrix II	🟠	py
	60	Permutation Sequence	🔴
✅	61	Rotate List	🟠	py
✅	62	Unique Paths	🟠	py
✅	63	Unique Paths II	🟠	py
✅	64	Minimum Path Sum	🟠	py
✅	65	Valid Number	🔴	py java
✅	66	Plus One	🟢	py
✅	67	Add Binary	🟢	py
	68	Text Justification	🔴
✅	69	Sqrt(x)	🟢	py
✅	70	Climbing Stairs	🟢	py
✅	71	Simplify Path	🟠	py
✅	72	Edit Distance	🔴	py
✅	73	Set Matrix Zeroes	🟠	py
✅	74	Search a 2D Matrix	🟠	py
✅	75	Sort Colors	🟠	py
✅	76	Minimum Window Substring	🔴	py
✅	77	Combinations	🟠	py
✅	78	Subsets	🟠	py cpp
✅	79	Word Search	🟠	py
✅	80	Remove Duplicates from Sorted Array II	🟠	py
✅	81	Search in Rotated Sorted Array II	🟠	py
✅	82	Remove Duplicates from Sorted List II	🟠	py
✅	83	Remove Duplicates from Sorted List	🟢	py cpp
✅	84	Largest Rectangle in Histogram	🔴	py
✅	85	Maximal Rectangle	🔴	py
✅	86	Partition List	🟠	py
	87	Scramble String	🔴
✅	88	Merge Sorted Array	🟢	py
✅	89	Gray Code	🟠	py
✅	90	Subsets II	🟠	py cpp
✅	91	Decode Ways	🟠	py
✅	92	Reverse Linked List II	🟠	py cpp
✅	93	Restore IP Addresses	🟠	py
✅	94	Binary Tree Inorder Traversal	🟢	py cpp
✅	95	Unique Binary Search Trees II	🟠	py
✅	96	Unique Binary Search Trees	🟠	py
✅	97	Interleaving String	🟠	py
✅	98	Validate Binary Search Tree	🟠	py
✅	99	Recover Binary Search Tree	🟠	py
✅	100	Same Tree	🟢	py
✅	101	Symmetric Tree	🟢	py
✅	102	Binary Tree Level Order Traversal	🟠	py cpp
✅	103	Binary Tree Zigzag Level Order Traversal	🟠	py
✅	104	Maximum Depth of Binary Tree	🟢	py cpp
✅	105	Construct Binary Tree from Preorder and Inorder Traversal	🟠	py
✅	106	Construct Binary Tree from Inorder and Postorder Traversal	🟠	py
✅	107	Binary Tree Level Order Traversal II	🟠	py
✅	108	Convert Sorted Array to Binary Search Tree	🟢	py
✅	109	Convert Sorted List to Binary Search Tree	🟠	py
✅	110	Balanced Binary Tree	🟢	py cpp
✅	111	Minimum Depth of Binary Tree	🟢	py
✅	112	Path Sum	🟢	py
✅	113	Path Sum II	🟠	py
✅	114	Flatten Binary Tree to Linked List	🟠	py
✅	115	Distinct Subsequences	🔴	py
✅	116	Populating Next Right Pointers in Each Node	🟠	py
✅	117	Populating Next Right Pointers in Each Node II	🟠	py
✅	118	Pascal's Triangle	🟢	py java
✅	119	Pascal's Triangle II	🟢	py cpp
✅	120	Triangle	🟠	py
✅	121	Best Time to Buy and Sell Stock	🟢	py
✅	122	Best Time to Buy and Sell Stock II	🟠	py
✅	123	Best Time to Buy and Sell Stock III	🔴	py
✅	124	Binary Tree Maximum Path Sum	🔴	py
✅	125	Valid Palindrome	🟢	py
✅	126	Word Ladder II	🔴	py cpp
✅	127	Word Ladder	🔴	py
✅	128	Longest Consecutive Sequence	🟠	py
✅	129	Sum Root to Leaf Numbers	🟠	py
✅	130	Surrounded Regions	🟠	py
✅	131	Palindrome Partitioning	🟠	py
✅	132	Palindrome Partitioning II	🔴	py
✅	133	Clone Graph	🟠	py
✅	134	Gas Station	🟠	py
✅	135	Candy	🔴	py
✅	136	Single Number	🟢	py
✅	137	Single Number II	🟠	py
✅	138	Copy List with Random Pointer	🟠	py
✅	139	Word Break	🟠	py
	140	Word Break II	🔴
✅	141	Linked List Cycle	🟢	py cpp
✅	142	Linked List Cycle II	🟠	py
✅	143	Reorder List	🟠	py
✅	144	Binary Tree Preorder Traversal	🟢	py cpp
✅	145	Binary Tree Postorder Traversal	🟢	py cpp
✅	146	LRU Cache	🟠	py
✅	147	Insertion Sort List	🟠	py
✅	148	Sort List	🟠	py
✅	149	Max Points on a Line	🔴	py
✅	150	Evaluate Reverse Polish Notation	🟠	py
✅	151	Reverse Words in a String	🟠	py
✅	152	Maximum Product Subarray	🟠	py cpp
✅	153	Find Minimum in Rotated Sorted Array	🟠	py
✅	154	Find Minimum in Rotated Sorted Array II	🔴	py
✅	155	Min Stack	🟠	py
	🔒 156	Binary Tree Upside Down	🟠
	🔒 157	Read N Characters Given Read4	🟢
	🔒 158	Read N Characters Given read4 II - Call Multiple Times	🔴
	🔒 159	Longest Substring with At Most Two Distinct Characters	🟠
✅	160	Intersection of Two Linked Lists	🟢	py cpp
	🔒 161	One Edit Distance	🟠
✅	162	Find Peak Element	🟠	py
	🔒 163	Missing Ranges	🟢
✅	164	Maximum Gap	🔴	py
✅	165	Compare Version Numbers	🟠	py
	166	Fraction to Recurring Decimal	🟠
✅	167	Two Sum II - Input Array Is Sorted	🟠	py
	168	Excel Sheet Column Title	🟢
✅	169	Majority Element	🟢	py
	🔒 170	Two Sum III - Data structure design	🟢
✅	171	Excel Sheet Column Number	🟢	py
✅	172	Factorial Trailing Zeroes	🟠	java
✅	173	Binary Search Tree Iterator	🟠	py
✅	174	Dungeon Game	🔴	py java
	175	Combine Two Tables	🟢
	176	Second Highest Salary	🟠
	177	Nth Highest Salary	🟠
	178	Rank Scores	🟠
✅	179	Largest Number	🟠	py
	180	Consecutive Numbers	🟠
	181	Employees Earning More Than Their Managers	🟢
	182	Duplicate Emails	🟢
	183	Customers Who Never Order	🟢
	184	Department Highest Salary	🟠
	185	Department Top Three Salaries	🔴
	🔒 186	Reverse Words in a String II	🟠
✅	187	Repeated DNA Sequences	🟠	py
✅	188	Best Time to Buy and Sell Stock IV	🔴	py
✅	189	Rotate Array	🟠	py cpp
✅	190	Reverse Bits	🟢	py
✅	191	Number of 1 Bits	🟢	py
	192	Word Frequency	🟠
	193	Valid Phone Numbers	🟢
	194	Transpose File	🟠
	195	Tenth Line	🟢
	196	Delete Duplicate Emails	🟢
	197	Rising Temperature	🟢
✅	198	House Robber	🟠	py
✅	199	Binary Tree Right Side View	🟠	py
✅	200	Number of Islands	🟠	py
✅	201	Bitwise AND of Numbers Range	🟠	py
✅	202	Happy Number	🟢	py
✅	203	Remove Linked List Elements	🟢	py cpp
✅	204	Count Primes	🟠	py cpp
✅	205	Isomorphic Strings	🟢	py
✅	206	Reverse Linked List	🟢	py cpp
✅	207	Course Schedule	🟠	py
✅	208	Implement Trie (Prefix Tree)	🟠	py
✅	209	Minimum Size Subarray Sum	🟠	py
✅	210	Course Schedule II	🟠	py
✅	211	Design Add and Search Words Data Structure	🟠	py
✅	212	Word Search II	🔴	py cpp
✅	213	House Robber II	🟠	py cpp
	214	Shortest Palindrome	🔴
✅	215	Kth Largest Element in an Array	🟠	py
✅	216	Combination Sum III	🟠	py
✅	217	Contains Duplicate	🟢	py
✅	218	The Skyline Problem	🔴	py
✅	219	Contains Duplicate II	🟢	py
✅	220	Contains Duplicate III	🔴	py
✅	221	Maximal Square	🟠	py
✅	222	Count Complete Tree Nodes	🟠	py
✅	223	Rectangle Area	🟠	py
✅	224	Basic Calculator	🔴	py
✅	225	Implement Stack using Queues	🟢	py
✅	226	Invert Binary Tree	🟢	py
✅	227	Basic Calculator II	🟠	py
✅	228	Summary Ranges	🟢	py
✅	229	Majority Element II	🟠	py
✅	230	Kth Smallest Element in a BST	🟠	py
✅	231	Power of Two	🟢	py
✅	232	Implement Queue using Stacks	🟢	py
✅	233	Number of Digit One	🔴	py
✅	234	Palindrome Linked List	🟢	py cpp
✅	235	Lowest Common Ancestor of a Binary Search Tree	🟠	py
✅	236	Lowest Common Ancestor of a Binary Tree	🟠	py
✅	237	Delete Node in a Linked List	🟠	py cpp
✅	238	Product of Array Except Self	🟠	py
✅	239	Sliding Window Maximum	🔴	py cpp
✅	240	Search a 2D Matrix II	🟠	py
✅	241	Different Ways to Add Parentheses	🟠	py
✅	242	Valid Anagram	🟢	py
	🔒 243	Shortest Word Distance	🟢
	🔒 244	Shortest Word Distance II	🟠
	🔒 245	Shortest Word Distance III	🟠
	🔒 246	Strobogrammatic Number	🟢
	🔒 247	Strobogrammatic Number II	🟠
	🔒 248	Strobogrammatic Number III	🔴
	🔒 249	Group Shifted Strings	🟠
	🔒 250	Count Univalue Subtrees	🟠
	🔒 251	Flatten 2D Vector	🟠
	🔒 252	Meeting Rooms	🟢
	🔒 253	Meeting Rooms II	🟠
	🔒 254	Factor Combinations	🟠
	🔒 255	Verify Preorder Sequence in Binary Search Tree	🟠
	🔒 256	Paint House	🟠
	257	Binary Tree Paths	🟢
✅	258	Add Digits	🟢	py
	🔒 259	3Sum Smaller	🟠
✅	260	Single Number III	🟠	py
	🔒 261	Graph Valid Tree	🟠
	262	Trips and Users	🔴
✅	263	Ugly Number	🟢	py
✅	264	Ugly Number II	🟠	py
	🔒 265	Paint House II	🔴
	🔒 266	Palindrome Permutation	🟢
	🔒 267	Palindrome Permutation II	🟠
✅	268	Missing Number	🟢	py
	🔒 269	Alien Dictionary	🔴
	🔒 270	Closest Binary Search Tree Value	🟢
	🔒 271	Encode and Decode Strings	🟠
	🔒 272	Closest Binary Search Tree Value II	🔴
	273	Integer to English Words	🔴
✅	274	H-Index	🟠	cpp
✅	275	H-Index II	🟠	py
	🔒 276	Paint Fence	🟠
	🔒 277	Find the Celebrity	🟠
✅	278	First Bad Version	🟢	py
✅	279	Perfect Squares	🟠	py cpp
	🔒 280	Wiggle Sort	🟠
	🔒 281	Zigzag Iterator	🟠
✅	282	Expression Add Operators	🔴	py
✅	283	Move Zeroes	🟢	py
✅	284	Peeking Iterator	🟠	py
	🔒 285	Inorder Successor in BST	🟠
	🔒 286	Walls and Gates	🟠
✅	287	Find the Duplicate Number	🟠	py
	🔒 288	Unique Word Abbreviation	🟠
✅	289	Game of Life	🟠	py
✅	290	Word Pattern	🟢	py
	🔒 291	Word Pattern II	🟠
✅	292	Nim Game	🟢	py
	🔒 293	Flip Game	🟢
	🔒 294	Flip Game II	🟠
✅	295	Find Median from Data Stream	🔴	py
	🔒 296	Best Meeting Point	🔴
✅	297	Serialize and Deserialize Binary Tree	🔴	py
	🔒 298	Binary Tree Longest Consecutive Sequence	🟠
✅	299	Bulls and Cows	🟠	py
✅	300	Longest Increasing Subsequence	🟠	py
	301	Remove Invalid Parentheses	🔴
	🔒 302	Smallest Rectangle Enclosing Black Pixels	🔴
✅	303	Range Sum Query - Immutable	🟢	py
✅	304	Range Sum Query 2D - Immutable	🟠	py
	🔒 305	Number of Islands II	🔴
	306	Additive Number	🟠
✅	307	Range Sum Query - Mutable	🟠	py
	🔒 308	Range Sum Query 2D - Mutable	🔴
✅	309	Best Time to Buy and Sell Stock with Cooldown	🟠	py
✅	310	Minimum Height Trees	🟠	py
	🔒 311	Sparse Matrix Multiplication	🟠
✅	312	Burst Balloons	🔴	py java
	313	Super Ugly Number	🟠
	🔒 314	Binary Tree Vertical Order Traversal	🟠
✅	315	Count of Smaller Numbers After Self	🔴	py
✅	316	Remove Duplicate Letters	🟠	py
	🔒 317	Shortest Distance from All Buildings	🔴
✅	318	Maximum Product of Word Lengths	🟠	py
	319	Bulb Switcher	🟠
	🔒 320	Generalized Abbreviation	🟠
	321	Create Maximum Number	🔴
✅	322	Coin Change	🟠	py
	🔒 323	Number of Connected Components in an Undirected Graph	🟠
	324	Wiggle Sort II	🟠
	🔒 325	Maximum Size Subarray Sum Equals k	🟠
✅	326	Power of Three	🟢	py
	327	Count of Range Sum	🔴
✅	328	Odd Even Linked List	🟠	py
✅	329	Longest Increasing Path in a Matrix	🔴	py
✅	330	Patching Array	🔴	py
✅	331	Verify Preorder Serialization of a Binary Tree	🟠	py
✅	332	Reconstruct Itinerary	🔴	py
	🔒 333	Largest BST Subtree	🟠
✅	334	Increasing Triplet Subsequence	🟠	py
	335	Self Crossing	🔴
✅	336	Palindrome Pairs	🔴	py
✅	337	House Robber III	🟠	py
✅	338	Counting Bits	🟢	py
	🔒 339	Nested List Weight Sum	🟠
	🔒 340	Longest Substring with At Most K Distinct Characters	🟠
✅	341	Flatten Nested List Iterator	🟠	py java
✅	342	Power of Four	🟢	py
✅	343	Integer Break	🟠	py cpp
✅	344	Reverse String	🟢	py
✅	345	Reverse Vowels of a String	🟢	py
	🔒 346	Moving Average from Data Stream	🟢
✅	347	Top K Frequent Elements	🟠	py cpp
	🔒 348	Design Tic-Tac-Toe	🟠
✅	349	Intersection of Two Arrays	🟢	py
✅	350	Intersection of Two Arrays II	🟢	py
	🔒 351	Android Unlock Patterns	🟠
✅	352	Data Stream as Disjoint Intervals	🔴	py
	🔒 353	Design Snake Game	🟠
✅	354	Russian Doll Envelopes	🔴	py
✅	355	Design Twitter	🟠	py
	🔒 356	Line Reflection	🟠
✅	357	Count Numbers with Unique Digits	🟠	py
	🔒 358	Rearrange String k Distance Apart	🔴
	🔒 359	Logger Rate Limiter	🟢
	🔒 360	Sort Transformed Array	🟠
	🔒 361	Bomb Enemy	🟠
	🔒 362	Design Hit Counter	🟠
✅	363	Max Sum of Rectangle No Larger Than K	🔴	py
	🔒 364	Nested List Weight Sum II	🟠
✅	365	Water and Jug Problem	🟠	py
	🔒 366	Find Leaves of Binary Tree	🟠
✅	367	Valid Perfect Square	🟢	py
✅	368	Largest Divisible Subset	🟠	py
	🔒 369	Plus One Linked List	🟠
	🔒 370	Range Addition	🟠
	371	Sum of Two Integers	🟠
	372	Super Pow	🟠
✅	373	Find K Pairs with Smallest Sums	🟠	py
✅	374	Guess Number Higher or Lower	🟢	py
	375	Guess Number Higher or Lower II	🟠
✅	376	Wiggle Subsequence	🟠	py
✅	377	Combination Sum IV	🟠	py
✅	378	Kth Smallest Element in a Sorted Matrix	🟠	py
	🔒 379	Design Phone Directory	🟠
✅	380	Insert Delete GetRandom O(1)	🟠	py
✅	381	Insert Delete GetRandom O(1) - Duplicates allowed	🔴	py
✅	382	Linked List Random Node	🟠	py cpp
✅	383	Ransom Note	🟢	py
✅	384	Shuffle an Array	🟠	py
	385	Mini Parser	🟠
	386	Lexicographical Numbers	🟠
✅	387	First Unique Character in a String	🟢	py
	388	Longest Absolute File Path	🟠
✅	389	Find the Difference	🟢	py
	390	Elimination Game	🟠
	391	Perfect Rectangle	🔴
✅	392	Is Subsequence	🟢	py
✅	393	UTF-8 Validation	🟠	py
✅	394	Decode String	🟠	py
✅	395	Longest Substring with At Least K Repeating Characters	🟠	py
	396	Rotate Function	🟠
	397	Integer Replacement	🟠
	398	Random Pick Index	🟠
✅	399	Evaluate Division	🟠	py
	400	Nth Digit	🟠
	401	Binary Watch	🟢
✅	402	Remove K Digits	🟠	py
	403	Frog Jump	🔴
✅	404	Sum of Left Leaves	🟢	py
	405	Convert a Number to Hexadecimal	🟢
✅	406	Queue Reconstruction by Height	🟠	py
✅	407	Trapping Rain Water II	🔴	py
	🔒 408	Valid Word Abbreviation	🟢
✅	409	Longest Palindrome	🟢	py
✅	410	Split Array Largest Sum	🔴	py
	🔒 411	Minimum Unique Word Abbreviation	🔴
✅	412	Fizz Buzz	🟢	py
✅	413	Arithmetic Slices	🟠	py
✅	414	Third Maximum Number	🟢	py
✅	415	Add Strings	🟢	py
✅	416	Partition Equal Subset Sum	🟠	py cpp
✅	417	Pacific Atlantic Water Flow	🟠	py
	🔒 418	Sentence Screen Fitting	🟠
	419	Battleships in a Board	🟠
	420	Strong Password Checker	🔴
✅	421	Maximum XOR of Two Numbers in an Array	🟠	py
	🔒 422	Valid Word Square	🟢
✅	423	Reconstruct Original Digits from English	🟠	py
✅	424	Longest Repeating Character Replacement	🟠	py
	🔒 425	Word Squares	🔴
	🔒 426	Convert Binary Search Tree to Sorted Doubly Linked List	🟠
✅	427	Construct Quad Tree	🟠	py
	🔒 428	Serialize and Deserialize N-ary Tree	🔴
✅	429	N-ary Tree Level Order Traversal	🟠	py
✅	430	Flatten a Multilevel Doubly Linked List	🟠	py
	🔒 431	Encode N-ary Tree to Binary Tree	🔴
	432	All O`one Data Structure	🔴
✅	433	Minimum Genetic Mutation	🟠	py
	434	Number of Segments in a String	🟢
✅	435	Non-overlapping Intervals	🟠	py
✅	436	Find Right Interval	🟠	py
✅	437	Path Sum III	🟠	py
✅	438	Find All Anagrams in a String	🟠	py
	🔒 439	Ternary Expression Parser	🟠
	440	K-th Smallest in Lexicographical Order	🔴
✅	441	Arranging Coins	🟢	py
✅	442	Find All Duplicates in an Array	🟠	py
✅	443	String Compression	🟠	py
	🔒 444	Sequence Reconstruction	🟠
✅	445	Add Two Numbers II	🟠	py
✅	446	Arithmetic Slices II - Subsequence	🔴	py
	447	Number of Boomerangs	🟠
✅	448	Find All Numbers Disappeared in an Array	🟢	py
✅	449	Serialize and Deserialize BST	🟠	py
✅	450	Delete Node in a BST	🟠	py
✅	451	Sort Characters By Frequency	🟠	py
✅	452	Minimum Number of Arrows to Burst Balloons	🟠	py
	453	Minimum Moves to Equal Array Elements	🟠
✅	454	4Sum II	🟠	py
✅	455	Assign Cookies	🟢	py
✅	456	132 Pattern	🟠	py
	457	Circular Array Loop	🟠
✅	458	Poor Pigs	🔴	py
✅	459	Repeated Substring Pattern	🟢	py
✅	460	LFU Cache	🔴	py
✅	461	Hamming Distance	🟢	py
✅	462	Minimum Moves to Equal Array Elements II	🟠	py
✅	463	Island Perimeter	🟢	py
	464	Can I Win	🟠
	🔒 465	Optimal Account Balancing	🔴
	466	Count The Repetitions	🔴
	467	Unique Substrings in Wraparound String	🟠
	468	Validate IP Address	🟠
	🔒 469	Convex Polygon	🟠
✅	470	Implement Rand10() Using Rand7()	🟠	py
	🔒 471	Encode String with Shortest Length	🔴
✅	472	Concatenated Words	🔴	py
✅	473	Matchsticks to Square	🟠	py
✅	474	Ones and Zeroes	🟠	py
	475	Heaters	🟠
✅	476	Number Complement	🟢	py
	477	Total Hamming Distance	🟠
✅	478	Generate Random Point in a Circle	🟠	py
	479	Largest Palindrome Product	🔴
✅	480	Sliding Window Median	🔴	py
	481	Magical String	🟠
✅	482	License Key Formatting	🟢	py
	483	Smallest Good Base	🔴
	🔒 484	Find Permutation	🟠
✅	485	Max Consecutive Ones	🟢	py
	486	Predict the Winner	🟠
	🔒 487	Max Consecutive Ones II	🟠
	488	Zuma Game	🔴
	🔒 489	Robot Room Cleaner	🔴
	🔒 490	The Maze	🟠
✅	491	Non-decreasing Subsequences	🟠	py
	492	Construct the Rectangle	🟢
	493	Reverse Pairs	🔴
✅	494	Target Sum	🟠	py
✅	495	Teemo Attacking	🟢	py
✅	496	Next Greater Element I	🟢	py
	497	Random Point in Non-overlapping Rectangles	🟠
✅	498	Diagonal Traverse	🟠	py
	🔒 499	The Maze III	🔴
	500	Keyboard Row	🟢
	501	Find Mode in Binary Search Tree	🟢
	502	IPO	🔴
✅	503	Next Greater Element II	🟠	py
	504	Base 7	🟢
	🔒 505	The Maze II	🟠
✅	506	Relative Ranks	🟢	py
	507	Perfect Number	🟢
	508	Most Frequent Subtree Sum	🟠
✅	509	Fibonacci Number	🟢	py
	🔒 510	Inorder Successor in BST II	🟠
	511	Game Play Analysis I	🟢
	🔒 512	Game Play Analysis II	🟢
	513	Find Bottom Left Tree Value	🟠
	514	Freedom Trail	🔴
	515	Find Largest Value in Each Tree Row	🟠
✅	516	Longest Palindromic Subsequence	🟠	py cpp
	517	Super Washing Machines	🔴
✅	518	Coin Change II	🟠	py
	519	Random Flip Matrix	🟠
✅	520	Detect Capital	🟢	py
✅	521	Longest Uncommon Subsequence I	🟢	py
✅	522	Longest Uncommon Subsequence II	🟠	py
✅	523	Continuous Subarray Sum	🟠	py
✅	524	Longest Word in Dictionary through Deleting	🟠	py
✅	525	Contiguous Array	🟠	py
✅	526	Beautiful Arrangement	🟠	py
	🔒 527	Word Abbreviation	🔴
✅	528	Random Pick with Weight	🟠	py
	529	Minesweeper	🟠
✅	530	Minimum Absolute Difference in BST	🟢	py
	🔒 531	Lonely Pixel I	🟠
✅	532	K-diff Pairs in an Array	🟠	py
	🔒 533	Lonely Pixel II	🟠
	🔒 534	Game Play Analysis III	🟠
✅	535	Encode and Decode TinyURL	🟠	py
	🔒 536	Construct Binary Tree from String	🟠
✅	537	Complex Number Multiplication	🟠	py
✅	538	Convert BST to Greater Tree	🟠	py
	539	Minimum Time Difference	🟠
✅	540	Single Element in a Sorted Array	🟠	py
	541	Reverse String II	🟢
✅	542	01 Matrix	🟠	py
✅	543	Diameter of Binary Tree	🟢	py
	🔒 544	Output Contest Matches	🟠
	🔒 545	Boundary of Binary Tree	🟠
✅	546	Remove Boxes	🔴	py
✅	547	Number of Provinces	🟠	py
	🔒 548	Split Array with Equal Sum	🔴
	🔒 549	Binary Tree Longest Consecutive Sequence II	🟠
	🔒 550	Game Play Analysis IV	🟠
✅	551	Student Attendance Record I	🟢	py
	552	Student Attendance Record II	🔴
	553	Optimal Division	🟠
✅	554	Brick Wall	🟠	py
	🔒 555	Split Concatenated Strings	🟠
✅	556	Next Greater Element III	🟠	py
✅	557	Reverse Words in a String III	🟢	py
	558	Logical OR of Two Binary Grids Represented as Quad-Trees	🟠
✅	559	Maximum Depth of N-ary Tree	🟢	py
✅	560	Subarray Sum Equals K	🟠	py
✅	561	Array Partition	🟢	py
	🔒 562	Longest Line of Consecutive One in Matrix	🟠
✅	563	Binary Tree Tilt	🟢	py
	564	Find the Closest Palindrome	🔴
✅	565	Array Nesting	🟠	py
✅	566	Reshape the Matrix	🟢	py
✅	567	Permutation in String	🟠	py
	🔒 568	Maximum Vacation Days	🔴
	🔒 569	Median Employee Salary	🔴
	🔒 570	Managers with at Least 5 Direct Reports	🟠
	🔒 571	Find Median Given Frequency of Numbers	🔴
✅	572	Subtree of Another Tree	🟢	py
	🔒 573	Squirrel Simulation	🟠
	🔒 574	Winning Candidate	🟠
✅	575	Distribute Candies	🟢	py
✅	576	Out of Boundary Paths	🟠	py
	🔒 577	Employee Bonus	🟢
	🔒 578	Get Highest Answer Rate Question	🟠
	🔒 579	Find Cumulative Salary of an Employee	🔴
	🔒 580	Count Student Number in Departments	🟠
✅	581	Shortest Unsorted Continuous Subarray	🟠	py
	🔒 582	Kill Process	🟠
✅	583	Delete Operation for Two Strings	🟠	py
	584	Find Customer Referee	🟢
	🔒 585	Investments in 2016	🟠
	586	Customer Placing the Largest Number of Orders	🟢
✅	587	Erect the Fence	🔴	py
	🔒 588	Design In-Memory File System	🔴
✅	589	N-ary Tree Preorder Traversal	🟢	py
✅	590	N-ary Tree Postorder Traversal	🟢	py
	591	Tag Validator	🔴
	592	Fraction Addition and Subtraction	🟠
✅	593	Valid Square	🟠	py
✅	594	Longest Harmonious Subsequence	🟢	py
	595	Big Countries	🟢
	596	Classes More Than 5 Students	🟢
	🔒 597	Friend Requests I: Overall Acceptance Rate	🟢
✅	598	Range Addition II	🟢	py
	599	Minimum Index Sum of Two Lists	🟢
✅	600	Non-negative Integers without Consecutive Ones	🔴	py
	601	Human Traffic of Stadium	🔴
	🔒 602	Friend Requests II: Who Has the Most Friends	🟠
	🔒 603	Consecutive Available Seats	🟢
	🔒 604	Design Compressed String Iterator	🟢
✅	605	Can Place Flowers	🟢	py
✅	606	Construct String from Binary Tree	🟢	py
	607	Sales Person	🟢
	608	Tree Node	🟠
✅	609	Find Duplicate File in System	🟠	py
	🔒 610	Triangle Judgement	🟢
✅	611	Valid Triangle Number	🟠	py
	🔒 612	Shortest Distance in a Plane	🟠
	🔒 613	Shortest Distance in a Line	🟢
	🔒 614	Second Degree Follower	🟠
	🔒 615	Average Salary: Departments VS Company	🔴
	🔒 616	Add Bold Tag in String	🟠
✅	617	Merge Two Binary Trees	🟢	py
	🔒 618	Students Report By Geography	🔴
	🔒 619	Biggest Single Number	🟢
	620	Not Boring Movies	🟢
✅	621	Task Scheduler	🟠	py
✅	622	Design Circular Queue	🟠	py
✅	623	Add One Row to Tree	🟠	py
	🔒 624	Maximum Distance in Arrays	🟠
	🔒 625	Minimum Factorization	🟠
	626	Exchange Seats	🟠
	627	Swap Salary	🟢
✅	628	Maximum Product of Three Numbers	🟢	py
✅	629	K Inverse Pairs Array	🔴	py
✅	630	Course Schedule III	🔴	py
	🔒 631	Design Excel Sum Formula	🔴
	632	Smallest Range Covering Elements from K Lists	🔴
✅	633	Sum of Square Numbers	🟠	py
	🔒 634	Find the Derangement of An Array	🟠
	🔒 635	Design Log Storage System	🟠
	636	Exclusive Time of Functions	🟠
✅	637	Average of Levels in Binary Tree	🟢	py
	638	Shopping Offers	🟠
✅	639	Decode Ways II	🔴	py
	640	Solve the Equation	🟠
✅	641	Design Circular Deque	🟠	py
	🔒 642	Design Search Autocomplete System	🔴
✅	643	Maximum Average Subarray I	🟢	py
	🔒 644	Maximum Average Subarray II	🔴
✅	645	Set Mismatch	🟢	py
✅	646	Maximum Length of Pair Chain	🟠	py java
✅	647	Palindromic Substrings	🟠	py
✅	648	Replace Words	🟠	py
	649	Dota2 Senate	🟠
✅	650	2 Keys Keyboard	🟠	py
	🔒 651	4 Keys Keyboard	🟠
	652	Find Duplicate Subtrees	🟠
✅	653	Two Sum IV - Input is a BST	🟢	py
✅	654	Maximum Binary Tree	🟠	py
	655	Print Binary Tree	🟠
	🔒 656	Coin Path	🔴
✅	657	Robot Return to Origin	🟢	py
✅	658	Find K Closest Elements	🟠	py
✅	659	Split Array into Consecutive Subsequences	🟠	py
	🔒 660	Remove 9	🔴
	661	Image Smoother	🟢
✅	662	Maximum Width of Binary Tree	🟠	py
	🔒 663	Equal Tree Partition	🟠
	664	Strange Printer	🔴
✅	665	Non-decreasing Array	🟠	py
	🔒 666	Path Sum IV	🟠
✅	667	Beautiful Arrangement II	🟠	py
✅	668	Kth Smallest Number in Multiplication Table	🔴	py
✅	669	Trim a Binary Search Tree	🟠	py
✅	670	Maximum Swap	🟠	py
	671	Second Minimum Node In a Binary Tree	🟢
	672	Bulb Switcher II	🟠
✅	673	Number of Longest Increasing Subsequence	🟠	py
✅	674	Longest Continuous Increasing Subsequence	🟢	py
	675	Cut Off Trees for Golf Event	🔴
	676	Implement Magic Dictionary	🟠
✅	677	Map Sum Pairs	🟠	py
✅	678	Valid Parenthesis String	🟠	py java
	679	24 Game	🔴
✅	680	Valid Palindrome II	🟢	py
	🔒 681	Next Closest Time	🟠
✅	682	Baseball Game	🟢	py
	🔒 683	K Empty Slots	🔴
✅	684	Redundant Connection	🟠	py
	685	Redundant Connection II	🔴
	686	Repeated String Match	🟠
	687	Longest Univalue Path	🟠
	688	Knight Probability in Chessboard	🟠
	689	Maximum Sum of 3 Non-Overlapping Subarrays	🔴
✅	690	Employee Importance	🟠	py
	691	Stickers to Spell Word	🔴
✅	692	Top K Frequent Words	🟠	py
	693	Binary Number with Alternating Bits	🟢
	🔒 694	Number of Distinct Islands	🟠
✅	695	Max Area of Island	🟠	py
✅	696	Count Binary Substrings	🟢	py
	697	Degree of an Array	🟢
✅	698	Partition to K Equal Sum Subsets	🟠	py
	699	Falling Squares	🔴
✅	700	Search in a Binary Search Tree	🟢	py
✅	701	Insert into a Binary Search Tree	🟠	py
	🔒 702	Search in a Sorted Array of Unknown Size	🟠
✅	703	Kth Largest Element in a Stream	🟢	py
✅	704	Binary Search	🟢	py
✅	705	Design HashSet	🟢	py
✅	706	Design HashMap	🟢	py
✅	707	Design Linked List	🟠	py
	🔒 708	Insert into a Sorted Circular Linked List	🟠
✅	709	To Lower Case	🟢	py
	710	Random Pick with Blacklist	🔴
	🔒 711	Number of Distinct Islands II	🔴
	712	Minimum ASCII Delete Sum for Two Strings	🟠
✅	713	Subarray Product Less Than K	🟠	py cpp
✅	714	Best Time to Buy and Sell Stock with Transaction Fee	🟠	py
	715	Range Module	🔴
	🔒 716	Max Stack	🔴
	717	1-bit and 2-bit Characters	🟢
✅	718	Maximum Length of Repeated Subarray	🟠	py java
✅	719	Find K-th Smallest Pair Distance	🔴	py
✅	720	Longest Word in Dictionary	🟠	py
✅	721	Accounts Merge	🟠	py
	722	Remove Comments	🟠
	🔒 723	Candy Crush	🟠
✅	724	Find Pivot Index	🟢	py
✅	725	Split Linked List in Parts	🟠	py
	726	Number of Atoms	🔴
	🔒 727	Minimum Window Subsequence	🔴
✅	728	Self Dividing Numbers	🟢	py
✅	729	My Calendar I	🟠	py
	730	Count Different Palindromic Subsequences	🔴
✅	731	My Calendar II	🟠	py
✅	732	My Calendar III	🔴	py
✅	733	Flood Fill	🟢	py
	🔒 734	Sentence Similarity	🟢
✅	735	Asteroid Collision	🟠	py
	736	Parse Lisp Expression	🔴
	🔒 737	Sentence Similarity II	🟠
	738	Monotone Increasing Digits	🟠
✅	739	Daily Temperatures	🟠	py
✅	740	Delete and Earn	🟠	py cpp
✅	741	Cherry Pickup	🔴	py
	🔒 742	Closest Leaf in a Binary Tree	🟠
✅	743	Network Delay Time	🟠	py
✅	744	Find Smallest Letter Greater Than Target	🟢	py
✅	745	Prefix and Suffix Search	🔴	py
✅	746	Min Cost Climbing Stairs	🟢	py
✅	747	Largest Number At Least Twice of Others	🟢	py
	748	Shortest Completing Word	🟢
	749	Contain Virus	🔴
	🔒 750	Number Of Corner Rectangles	🟠
	🔒 751	IP to CIDR	🟠
✅	752	Open the Lock	🟠	py
	753	Cracking the Safe	🔴
✅	754	Reach a Number	🟠	py
	🔒 755	Pour Water	🟠
	756	Pyramid Transition Matrix	🟠
	757	Set Intersection Size At Least Two	🔴
	🔒 758	Bold Words in String	🟠
	🔒 759	Employee Free Time	🔴
	🔒 760	Find Anagram Mappings	🟢
	761	Special Binary String	🔴
	762	Prime Number of Set Bits in Binary Representation	🟢
✅	763	Partition Labels	🟠	py cpp
✅	764	Largest Plus Sign	🟠	py
	765	Couples Holding Hands	🔴
✅	766	Toeplitz Matrix	🟢	py
✅	767	Reorganize String	🟠	py
	768	Max Chunks To Make Sorted II	🔴
✅	769	Max Chunks To Make Sorted	🟠	cpp
	770	Basic Calculator IV	🔴
✅	771	Jewels and Stones	🟢	py
	🔒 772	Basic Calculator III	🔴
	773	Sliding Puzzle	🔴
	🔒 774	Minimize Max Distance to Gas Station	🔴
✅	775	Global and Local Inversions	🟠	py
	🔒 776	Split BST	🟠
✅	777	Swap Adjacent in LR String	🟠	py
✅	778	Swim in Rising Water	🔴	py
	779	K-th Symbol in Grammar	🟠
	780	Reaching Points	🔴
	781	Rabbits in Forest	🟠
✅	782	Transform to Chessboard	🔴	py
✅	783	Minimum Distance Between BST Nodes	🟢	py
✅	784	Letter Case Permutation	🟠	py
✅	785	Is Graph Bipartite?	🟠	py
	786	K-th Smallest Prime Fraction	🟠
✅	787	Cheapest Flights Within K Stops	🟠	py java
✅	788	Rotated Digits	🟠	py
	789	Escape The Ghosts	🟠
✅	790	Domino and Tromino Tiling	🟠	py
✅	791	Custom Sort String	🟠	py
✅	792	Number of Matching Subsequences	🟠	py
	793	Preimage Size of Factorial Zeroes Function	🔴
	794	Valid Tic-Tac-Toe State	🟠
✅	795	Number of Subarrays with Bounded Maximum	🟠	py
✅	796	Rotate String	🟢	py
✅	797	All Paths From Source to Target	🟠	py
	798	Smallest Rotation with Highest Score	🔴
✅	799	Champagne Tower	🟠	py
	🔒 800	Similar RGB Color	🟢
	801	Minimum Swaps To Make Sequences Increasing	🔴
✅	802	Find Eventual Safe States	🟠	py
	803	Bricks Falling When Hit	🔴
✅	804	Unique Morse Code Words	🟢	py
	805	Split Array With Same Average	🔴
	806	Number of Lines To Write String	🟢
	807	Max Increase to Keep City Skyline	🟠
	808	Soup Servings	🟠
	809	Expressive Words	🟠
	810	Chalkboard XOR Game	🔴
✅	811	Subdomain Visit Count	🟠	py
	812	Largest Triangle Area	🟢
	813	Largest Sum of Averages	🟠
✅	814	Binary Tree Pruning	🟠	py
✅	815	Bus Routes	🔴	py
✅	816	Ambiguous Coordinates	🟠	py
	817	Linked List Components	🟠
✅	818	Race Car	🔴	py
✅	819	Most Common Word	🟢	py
✅	820	Short Encoding of Words	🟠	py
✅	821	Shortest Distance to a Character	🟢	py
	822	Card Flipping Game	🟠
✅	823	Binary Trees With Factors	🟠	py
✅	824	Goat Latin	🟢	py
	825	Friends Of Appropriate Ages	🟠
✅	826	Most Profit Assigning Work	🟠	py
✅	827	Making A Large Island	🔴	py
	828	Count Unique Characters of All Substrings of a Given String	🔴
	829	Consecutive Numbers Sum	🔴
✅	830	Positions of Large Groups	🟢	py
✅	831	Masking Personal Information	🟠	py
✅	832	Flipping an Image	🟢	py
	833	Find And Replace in String	🟠
✅	834	Sum of Distances in Tree	🔴	py
✅	835	Image Overlap	🟠	py
	836	Rectangle Overlap	🟢
	837	New 21 Game	🟠
✅	838	Push Dominoes	🟠	py
	839	Similar String Groups	🔴
	840	Magic Squares In Grid	🟠
✅	841	Keys and Rooms	🟠	py
	842	Split Array into Fibonacci Sequence	🟠
✅	843	Guess the Word	🔴	py
✅	844	Backspace String Compare	🟢	py
✅	845	Longest Mountain in Array	🟠	py
✅	846	Hand of Straights	🟠	py
✅	847	Shortest Path Visiting All Nodes	🔴	py
✅	848	Shifting Letters	🟠	py
✅	849	Maximize Distance to Closest Person	🟠	py
✅	850	Rectangle Area II	🔴	py
	851	Loud and Rich	🟠
✅	852	Peak Index in a Mountain Array	🟠	py
	853	Car Fleet	🟠
✅	854	K-Similar Strings	🔴	py
	855	Exam Room	🟠
✅	856	Score of Parentheses	🟠	py
	857	Minimum Cost to Hire K Workers	🔴
✅	858	Mirror Reflection	🟠	py
✅	859	Buddy Strings	🟢	py
✅	860	Lemonade Change	🟢	py
	861	Score After Flipping Matrix	🟠
	862	Shortest Subarray with Sum at Least K	🔴
	863	All Nodes Distance K in Binary Tree	🟠
	864	Shortest Path to Get All Keys	🔴
✅	865	Smallest Subtree with all the Deepest Nodes	🟠	py
	866	Prime Palindrome	🟠
✅	867	Transpose Matrix	🟢	py
	868	Binary Gap	🟢
✅	869	Reordered Power of 2	🟠	py
✅	870	Advantage Shuffle	🟠	py
✅	871	Minimum Number of Refueling Stops	🔴	py
✅	872	Leaf-Similar Trees	🟢	py
✅	873	Length of Longest Fibonacci Subsequence	🟠	cpp
	874	Walking Robot Simulation	🟠
✅	875	Koko Eating Bananas	🟠	py
✅	876	Middle of the Linked List	🟢	py cpp
✅	877	Stone Game	🟠	py cpp
✅	878	Nth Magical Number	🔴	py
	879	Profitable Schemes	🔴
✅	880	Decoded String at Index	🟠	py
✅	881	Boats to Save People	🟠	py
✅	882	Reachable Nodes In Subdivided Graph	🔴	py
	883	Projection Area of 3D Shapes	🟢
	884	Uncommon Words from Two Sentences	🟢
	885	Spiral Matrix III	🟠
✅	886	Possible Bipartition	🟠	py
	887	Super Egg Drop	🔴
	888	Fair Candy Swap	🟢
	889	Construct Binary Tree from Preorder and Postorder Traversal	🟠
✅	890	Find and Replace Pattern	🟠	py
	891	Sum of Subsequence Widths	🔴
	892	Surface Area of 3D Shapes	🟢
	893	Groups of Special-Equivalent Strings	🟠
	894	All Possible Full Binary Trees	🟠
✅	895	Maximum Frequency Stack	🔴	py
✅	896	Monotonic Array	🟢	py
✅	897	Increasing Order Search Tree	🟢	py cpp
	898	Bitwise ORs of Subarrays	🟠
✅	899	Orderly Queue	🔴	py
	900	RLE Iterator	🟠
✅	901	Online Stock Span	🟠	py
✅	902	Numbers At Most N Given Digit Set	🔴	py
	903	Valid Permutations for DI Sequence	🔴
✅	904	Fruit Into Baskets	🟠	py
✅	905	Sort Array By Parity	🟢	py cpp
✅	906	Super Palindromes	🔴	py
✅	907	Sum of Subarray Minimums	🟠	py
✅	908	Smallest Range I	🟢	py
✅	909	Snakes and Ladders	🟠	py cpp
✅	910	Smallest Range II	🟠	py
✅	911	Online Election	🟠	py
	912	Sort an Array	🟠
	913	Cat and Mouse	🔴
✅	914	X of a Kind in a Deck of Cards	🟢	py
✅	915	Partition Array into Disjoint Intervals	🟠	py
✅	916	Word Subsets	🟠	py
✅	917	Reverse Only Letters	🟢	py
✅	918	Maximum Sum Circular Subarray	🟠	py
✅	919	Complete Binary Tree Inserter	🟠	py
	920	Number of Music Playlists	🔴
	921	Minimum Add to Make Parentheses Valid	🟠
✅	922	Sort Array By Parity II	🟢	py
✅	923	3Sum With Multiplicity	🟠	py java
	924	Minimize Malware Spread	🔴
✅	925	Long Pressed Name	🟢	py
✅	926	Flip String to Monotone Increasing	🟠	py
✅	927	Three Equal Parts	🔴	py
	928	Minimize Malware Spread II	🔴
✅	929	Unique Email Addresses	🟢	py
✅	930	Binary Subarrays With Sum	🟠	py
✅	931	Minimum Falling Path Sum	🟠	py
✅	932	Beautiful Array	🟠	py
✅	933	Number of Recent Calls	🟢	py
✅	934	Shortest Bridge	🟠	py
✅	935	Knight Dialer	🟠	py
✅	936	Stamping The Sequence	🔴	py
✅	937	Reorder Data in Log Files	🟠	py
✅	938	Range Sum of BST	🟢	py cpp
✅	939	Minimum Area Rectangle	🟠	py
✅	940	Distinct Subsequences II	🔴	py
✅	941	Valid Mountain Array	🟢	py
✅	942	DI String Match	🟢	py
✅	943	Find the Shortest Superstring	🔴	py
✅	944	Delete Columns to Make Sorted	🟢	py
✅	945	Minimum Increment to Make Array Unique	🟠	py
✅	946	Validate Stack Sequences	🟠	py
✅	947	Most Stones Removed with Same Row or Column	🟠	py
✅	948	Bag of Tokens	🟠	py
✅	949	Largest Time for Given Digits	🟠	py cpp
✅	950	Reveal Cards In Increasing Order	🟠	py
✅	951	Flip Equivalent Binary Trees	🟠	py
✅	952	Largest Component Size by Common Factor	🔴	py
✅	953	Verifying an Alien Dictionary	🟢	py
✅	954	Array of Doubled Pairs	🟠	py
✅	955	Delete Columns to Make Sorted II	🟠	py
✅	956	Tallest Billboard	🔴	py
✅	957	Prison Cells After N Days	🟠	py java
✅	958	Check Completeness of a Binary Tree	🟠	py
✅	959	Regions Cut By Slashes	🟠	py
✅	960	Delete Columns to Make Sorted III	🔴	py
✅	961	N-Repeated Element in Size 2N Array	🟢	py
✅	962	Maximum Width Ramp	🟠	py
✅	963	Minimum Area Rectangle II	🟠	py
	964	Least Operators to Express Number	🔴
✅	965	Univalued Binary Tree	🟢	py
✅	966	Vowel Spellchecker	🟠	py
✅	967	Numbers With Same Consecutive Differences	🟠	py cpp
✅	968	Binary Tree Cameras	🔴	py
✅	969	Pancake Sorting	🟠	py
✅	970	Powerful Integers	🟠	py
✅	971	Flip Binary Tree To Match Preorder Traversal	🟠	py
✅	972	Equal Rational Numbers	🔴	py
✅	973	K Closest Points to Origin	🟠	py
✅	974	Subarray Sums Divisible by K	🟠	py
✅	975	Odd Even Jump	🔴	py
✅	976	Largest Perimeter Triangle	🟢	py
✅	977	Squares of a Sorted Array	🟢	py
✅	978	Longest Turbulent Subarray	🟠	py
✅	979	Distribute Coins in Binary Tree	🟠	py
✅	980	Unique Paths III	🔴	py
✅	981	Time Based Key-Value Store	🟠	py
✅	982	Triples with Bitwise AND Equal To Zero	🔴	py
✅	983	Minimum Cost For Tickets	🟠	py
✅	984	String Without AAA or BBB	🟠	py
✅	985	Sum of Even Numbers After Queries	🟠	py
✅	986	Interval List Intersections	🟠	py
✅	987	Vertical Order Traversal of a Binary Tree	🔴	py
✅	988	Smallest String Starting From Leaf	🟠	py
✅	989	Add to Array-Form of Integer	🟢	py
✅	990	Satisfiability of Equality Equations	🟠	py
✅	991	Broken Calculator	🟠	py
✅	992	Subarrays with K Different Integers	🔴	py
✅	993	Cousins in Binary Tree	🟢	py
✅	994	Rotting Oranges	🟠	py
✅	995	Minimum Number of K Consecutive Bit Flips	🔴	py
✅	996	Number of Squareful Arrays	🔴	py
✅	997	Find the Town Judge	🟢	py
✅	998	Maximum Binary Tree II	🟠	py
✅	999	Available Captures for Rook	🟢	py
✅	1000	Minimum Cost to Merge Stones	🔴	py
✅	1001	Grid Illumination	🔴	py
✅	1002	Find Common Characters	🟢	py
✅	1003	Check If Word Is Valid After Substitutions	🟠	py
✅	1004	Max Consecutive Ones III	🟠	py
✅	1005	Maximize Sum Of Array After K Negations	🟢	py
✅	1006	Clumsy Factorial	🟠	cpp
✅	1007	Minimum Domino Rotations For Equal Row	🟠	py
✅	1008	Construct Binary Search Tree from Preorder Traversal	🟠	py
✅	1009	Complement of Base 10 Integer	🟢	py
✅	1010	Pairs of Songs With Total Durations Divisible by 60	🟠	py
✅	1011	Capacity To Ship Packages Within D Days	🟠	py
✅	1012	Numbers With Repeated Digits	🔴	py cpp
✅	1013	Partition Array Into Three Parts With Equal Sum	🟢	py
✅	1014	Best Sightseeing Pair	🟠	py
✅	1015	Smallest Integer Divisible by K	🟠	py
✅	1016	Binary String With Substrings Representing 1 To N	🟠	py
✅	1017	Convert to Base -2	🟠	py
✅	1018	Binary Prefix Divisible By 5	🟢	py
✅	1019	Next Greater Node In Linked List	🟠	py
✅	1020	Number of Enclaves	🟠	py
✅	1021	Remove Outermost Parentheses	🟢	py
✅	1022	Sum of Root To Leaf Binary Numbers	🟢	py
✅	1023	Camelcase Matching	🟠	py
✅	1024	Video Stitching	🟠	py
✅	1025	Divisor Game	🟢	py
✅	1026	Maximum Difference Between Node and Ancestor	🟠	py
✅	1027	Longest Arithmetic Subsequence	🟠	py
✅	1028	Recover a Tree From Preorder Traversal	🔴	py
✅	1029	Two City Scheduling	🟠	py
✅	1030	Matrix Cells in Distance Order	🟢	py
✅	1031	Maximum Sum of Two Non-Overlapping Subarrays	🟠	py
✅	1032	Stream of Characters	🔴	py
✅	1033	Moving Stones Until Consecutive	🟠	py
✅	1034	Coloring A Border	🟠	py
✅	1035	Uncrossed Lines	🟠	py
✅	1036	Escape a Large Maze	🔴	py
✅	1037	Valid Boomerang	🟢	py
✅	1038	Binary Search Tree to Greater Sum Tree	🟠	py
✅	1039	Minimum Score Triangulation of Polygon	🟠	py
	1040	Moving Stones Until Consecutive II	🟠
✅	1041	Robot Bounded In Circle	🟠	py
✅	1042	Flower Planting With No Adjacent	🟠	py
✅	1043	Partition Array for Maximum Sum	🟠	py
✅	1044	Longest Duplicate Substring	🔴	py
	🔒 1045	Customers Who Bought All Products	🟠
✅	1046	Last Stone Weight	🟢	py
✅	1047	Remove All Adjacent Duplicates In String	🟢	py
✅	1048	Longest String Chain	🟠	py
	1049	Last Stone Weight II	🟠
	1050	Actors and Directors Who Cooperated At Least Three Times	🟢
✅	1051	Height Checker	🟢	py
✅	1052	Grumpy Bookstore Owner	🟠	py
✅	1053	Previous Permutation With One Swap	🟠	py
✅	1054	Distant Barcodes	🟠	py
	🔒 1055	Shortest Way to Form String	🟠
	🔒 1056	Confusing Number	🟢
	🔒 1057	Campus Bikes	🟠
	🔒 1058	Minimize Rounding Error to Meet Target	🟠
	🔒 1059	All Paths from Source Lead to Destination	🟠
	🔒 1060	Missing Element in Sorted Array	🟠
✅	1061	Lexicographically Smallest Equivalent String	🟠	py
	🔒 1062	Longest Repeating Substring	🟠
	🔒 1063	Number of Valid Subarrays	🔴
	🔒 1064	Fixed Point	🟢
	🔒 1065	Index Pairs of a String	🟢
	🔒 1066	Campus Bikes II	🟠
	🔒 1067	Digit Count in Range	🔴
	🔒 1068	Product Sales Analysis I	🟢
	🔒 1069	Product Sales Analysis II	🟢
	🔒 1070	Product Sales Analysis III	🟠
✅	1071	Greatest Common Divisor of Strings	🟢	py
✅	1072	Flip Columns For Maximum Number of Equal Rows	🟠	py
✅	1073	Adding Two Negabinary Numbers	🟠	py
✅	1074	Number of Submatrices That Sum to Target	🔴	py
	🔒 1075	Project Employees I	🟢
	🔒 1076	Project Employees II	🟢
	🔒 1077	Project Employees III	🟠
✅	1078	Occurrences After Bigram	🟢	py
✅	1079	Letter Tile Possibilities	🟠	py
✅	1080	Insufficient Nodes in Root to Leaf Paths	🟠	py
✅	1081	Smallest Subsequence of Distinct Characters	🟠	py
	🔒 1082	Sales Analysis I	🟢
	🔒 1083	Sales Analysis II	🟢
	1084	Sales Analysis III	🟢
	🔒 1085	Sum of Digits in the Minimum Number	🟢
	🔒 1086	High Five	🟢
	🔒 1087	Brace Expansion	🟠
	🔒 1088	Confusing Number II	🔴
✅	1089	Duplicate Zeros	🟢	py
✅	1090	Largest Values From Labels	🟠	py
✅	1091	Shortest Path in Binary Matrix	🟠	py
✅	1092	Shortest Common Supersequence	🔴	py
✅	1093	Statistics from a Large Sample	🟠	py
✅	1094	Car Pooling	🟠	py
✅	1095	Find in Mountain Array	🔴	py
	1096	Brace Expansion II	🔴
	🔒 1097	Game Play Analysis V	🔴
	🔒 1098	Unpopular Books	🟠
	🔒 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	🟠
✅	1103	Distribute Candies to People	🟢	py
✅	1104	Path In Zigzag Labelled Binary Tree	🟠	py
✅	1105	Filling Bookcase Shelves	🟠	py
✅	1106	Parsing A Boolean Expression	🔴	py
	🔒 1107	New Users Daily Count	🟠
✅	1108	Defanging an IP Address	🟢	py
✅	1109	Corporate Flight Bookings	🟠	py
✅	1110	Delete Nodes And Return Forest	🟠	py
✅	1111	Maximum Nesting Depth of Two Valid Parentheses Strings	🟠	py
	🔒 1112	Highest Grade For Each Student	🟠
	🔒 1113	Reported Posts	🟢
✅	1114	Print in Order	🟢	py
	1115	Print FooBar Alternately	🟠
	1116	Print Zero Even Odd	🟠
	1117	Building H2O	🟠
	🔒 1118	Number of Days in a Month	🟢
	🔒 1119	Remove Vowels from a String	🟢
	🔒 1120	Maximum Average Subtree	🟠
	🔒 1121	Divide Array Into Increasing Sequences	🔴
✅	1122	Relative Sort Array	🟢	py
✅	1123	Lowest Common Ancestor of Deepest Leaves	🟠	py
✅	1124	Longest Well-Performing Interval	🟠	py
✅	1125	Smallest Sufficient Team	🔴	py
	🔒 1126	Active Businesses	🟠
	🔒 1127	User Purchase Platform	🔴
✅	1128	Number of Equivalent Domino Pairs	🟢	py
✅	1129	Shortest Path with Alternating Colors	🟠	py
✅	1130	Minimum Cost Tree From Leaf Values	🟠	py
	1131	Maximum of Absolute Value Expression	🟠
	🔒 1132	Reported Posts II	🟠
	🔒 1133	Largest Unique Number	🟢
	🔒 1134	Armstrong Number	🟢
	🔒 1135	Connecting Cities With Minimum Cost	🟠
	🔒 1136	Parallel Courses	🟠
✅	1137	N-th Tribonacci Number	🟢	py cpp
✅	1138	Alphabet Board Path	🟠	py
✅	1139	Largest 1-Bordered Square	🟠	py
	1140	Stone Game II	🟠
	1141	User Activity for the Past 30 Days I	🟢
	🔒 1142	User Activity for the Past 30 Days II	🟢
✅	1143	Longest Common Subsequence	🟠	py
✅	1144	Decrease Elements To Make Array Zigzag	🟠	py
✅	1145	Binary Tree Coloring Game	🟠	py
✅	1146	Snapshot Array	🟠	py
✅	1147	Longest Chunked Palindrome Decomposition	🔴	py
	1148	Article Views I	🟢
	🔒 1149	Article Views II	🟠
	🔒 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	🔴
✅	1154	Day of the Year	🟢	py
✅	1155	Number of Dice Rolls With Target Sum	🟠	py
✅	1156	Swap For Longest Repeated Character Substring	🟠	py
	1157	Online Majority Element In Subarray	🔴
	1158	Market Analysis I	🟠
	🔒 1159	Market Analysis II	🔴
✅	1160	Find Words That Can Be Formed by Characters	🟢	py
✅	1161	Maximum Level Sum of a Binary Tree	🟠	py
✅	1162	As Far from Land as Possible	🟠	py
✅	1163	Last Substring in Lexicographical Order	🔴	py
	🔒 1164	Product Price at a Given Date	🟠
	🔒 1165	Single-Row Keyboard	🟢
	🔒 1166	Design File System	🟠
	🔒 1167	Minimum Cost to Connect Sticks	🟠
	🔒 1168	Optimize Water Distribution in a Village	🔴
✅	1169	Invalid Transactions	🟠	py
✅	1170	Compare Strings by Frequency of the Smallest Character	🟠	py
✅	1171	Remove Zero Sum Consecutive Nodes from Linked List	🟠	py
	1172	Dinner Plate Stacks	🔴
	🔒 1173	Immediate Food Delivery I	🟢
	🔒 1174	Immediate Food Delivery II	🟠
✅	1175	Prime Arrangements	🟢	py
	🔒 1176	Diet Plan Performance	🟢
✅	1177	Can Make Palindrome from Substring	🟠	py
✅	1178	Number of Valid Words for Each Puzzle	🔴	py
	1179	Reformat Department Table	🟢
	🔒 1180	Count Substrings with Only One Distinct Letter	🟢
	🔒 1181	Before and After Puzzle	🟠
	🔒 1182	Shortest Distance to Target Color	🟠
	🔒 1183	Maximum Number of Ones	🔴
✅	1184	Distance Between Bus Stops	🟢	py
✅	1185	Day of the Week	🟢	py
✅	1186	Maximum Subarray Sum with One Deletion	🟠	py
	1187	Make Array Strictly Increasing	🔴
	🔒 1188	Design Bounded Blocking Queue	🟠
✅	1189	Maximum Number of Balloons	🟢	py
✅	1190	Reverse Substrings Between Each Pair of Parentheses	🟠	py
✅	1191	K-Concatenation Maximum Sum	🟠	py
✅	1192	Critical Connections in a Network	🔴	py
	🔒 1193	Monthly Transactions I	🟠
	🔒 1194	Tournament Winners	🔴
	1195	Fizz Buzz Multithreaded	🟠
	🔒 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	🔴
✅	1200	Minimum Absolute Difference	🟢	py
✅	1201	Ugly Number III	🟠	py
✅	1202	Smallest String With Swaps	🟠	py
	1203	Sort Items by Groups Respecting Dependencies	🔴
	🔒 1204	Last Person to Fit in the Bus	🟠
	🔒 1205	Monthly Transactions II	🟠
	1206	Design Skiplist	🔴
✅	1207	Unique Number of Occurrences	🟢	py
✅	1208	Get Equal Substrings Within Budget	🟠	py
✅	1209	Remove All Adjacent Duplicates in String II	🟠	py
✅	1210	Minimum Moves to Reach Target with Rotations	🔴	py
	🔒 1211	Queries Quality and Percentage	🟢
	🔒 1212	Team Scores in Football Tournament	🟠
	🔒 1213	Intersection of Three Sorted Arrays	🟢
	🔒 1214	Two Sum BSTs	🟠
	🔒 1215	Stepping Numbers	🟠
	🔒 1216	Valid Palindrome III	🔴
✅	1217	Minimum Cost to Move Chips to The Same Position	🟢	py
✅	1218	Longest Arithmetic Subsequence of Given Difference	🟠	py
✅	1219	Path with Maximum Gold	🟠	py
✅	1220	Count Vowels Permutation	🔴	py
✅	1221	Split a String in Balanced Strings	🟢	py
✅	1222	Queens That Can Attack the King	🟠	py
	1223	Dice Roll Simulation	🔴
	1224	Maximum Equal Frequency	🔴
	🔒 1225	Report Contiguous Dates	🔴
	1226	The Dining Philosophers	🟠
	1227	Airplane Seat Assignment Probability	🟠
	🔒 1228	Missing Number In Arithmetic Progression	🟢
	🔒 1229	Meeting Scheduler	🟠
	🔒 1230	Toss Strange Coins	🟠
	🔒 1231	Divide Chocolate	🔴
✅	1232	Check If It Is a Straight Line	🟢	py
✅	1233	Remove Sub-Folders from the Filesystem	🟠	py
✅	1234	Replace the Substring for Balanced String	🟠	py
✅	1235	Maximum Profit in Job Scheduling	🔴	py
	🔒 1236	Web Crawler	🟠
✅	1237	Find Positive Integer Solution for a Given Equation	🟠	py
✅	1238	Circular Permutation in Binary Representation	🟠	py
✅	1239	Maximum Length of a Concatenated String with Unique Characters	🟠	py
	1240	Tiling a Rectangle with the Fewest Squares	🔴
	🔒 1241	Number of Comments per Post	🟢
	🔒 1242	Web Crawler Multithreaded	🟠
	🔒 1243	Array Transformation	🟢
	🔒 1244	Design A Leaderboard	🟠
	🔒 1245	Tree Diameter	🟠
	🔒 1246	Palindrome Removal	🔴
✅	1247	Minimum Swaps to Make Strings Equal	🟠	py
✅	1248	Count Number of Nice Subarrays	🟠	py
✅	1249	Minimum Remove to Make Valid Parentheses	🟠	py
✅	1250	Check If It Is a Good Array	🔴	cpp
	🔒 1251	Average Selling Price	🟢
✅	1252	Cells with Odd Values in a Matrix	🟢	py
✅	1253	Reconstruct a 2-Row Binary Matrix	🟠	py
✅	1254	Number of Closed Islands	🟠	py
✅	1255	Maximum Score Words Formed by Letters	🔴	py
	🔒 1256	Encode Number	🟠
	🔒 1257	Smallest Common Region	🟠
	🔒 1258	Synonymous Sentences	🟠
	🔒 1259	Handshakes That Don't Cross	🔴
✅	1260	Shift 2D Grid	🟢	py
✅	1261	Find Elements in a Contaminated Binary Tree	🟠	py
✅	1262	Greatest Sum Divisible by Three	🟠	py cpp
	1263	Minimum Moves to Move a Box to Their Target Location	🔴
	🔒 1264	Page Recommendations	🟠
	🔒 1265	Print Immutable Linked List in Reverse	🟠
✅	1266	Minimum Time Visiting All Points	🟢	py
✅	1267	Count Servers that Communicate	🟠	py
✅	1268	Search Suggestions System	🟠	py
✅	1269	Number of Ways to Stay in the Same Place After Some Steps	🔴	py
	🔒 1270	All People Report to the Given Manager	🟠
	🔒 1271	Hexspeak	🟢
	🔒 1272	Remove Interval	🟠
	🔒 1273	Delete Tree Nodes	🟠
	🔒 1274	Number of Ships in a Rectangle	🔴
✅	1275	Find Winner on a Tic Tac Toe Game	🟢	py
✅	1276	Number of Burgers with No Waste of Ingredients	🟠	py
	1277	Count Square Submatrices with All Ones	🟠
	1278	Palindrome Partitioning III	🔴
	🔒 1279	Traffic Light Controlled Intersection	🟢
	🔒 1280	Students and Examinations	🟢
✅	1281	Subtract the Product and Sum of Digits of an Integer	🟢	py
✅	1282	Group the People Given the Group Size They Belong To	🟠	py
✅	1283	Find the Smallest Divisor Given a Threshold	🟠	py
	1284	Minimum Number of Flips to Convert Binary Matrix to Zero Matrix	🔴
	🔒 1285	Find the Start and End Number of Continuous Ranges	🟠
✅	1286	Iterator for Combination	🟠	py
✅	1287	Element Appearing More Than 25% In Sorted Array	🟢	py
✅	1288	Remove Covered Intervals	🟠	py
	1289	Minimum Falling Path Sum II	🔴
✅	1290	Convert Binary Number in a Linked List to Integer	🟢	py cpp
✅	1291	Sequential Digits	🟠	py
✅	1292	Maximum Side Length of a Square with Sum Less than or Equal to Threshold	🟠	py java
✅	1293	Shortest Path in a Grid with Obstacles Elimination	🔴	py
	🔒 1294	Weather Type in Each Country	🟢
✅	1295	Find Numbers with Even Number of Digits	🟢	py
✅	1296	Divide Array in Sets of K Consecutive Numbers	🟠	py
✅	1297	Maximum Number of Occurrences of a Substring	🟠	py
✅	1298	Maximum Candies You Can Get from Boxes	🔴	py
✅	1299	Replace Elements with Greatest Element on Right Side	🟢	py
✅	1300	Sum of Mutated Array Closest to Target	🟠	py
	1301	Number of Paths with Max Score	🔴
✅	1302	Deepest Leaves Sum	🟠	py
	🔒 1303	Find the Team Size	🟢
✅	1304	Find N Unique Integers Sum up to Zero	🟢	py
✅	1305	All Elements in Two Binary Search Trees	🟠	py
✅	1306	Jump Game III	🟠	py
	1307	Verbal Arithmetic Puzzle	🔴
	🔒 1308	Running Total for Different Genders	🟠
✅	1309	Decrypt String from Alphabet to Integer Mapping	🟢	py cpp
✅	1310	XOR Queries of a Subarray	🟠	py
✅	1311	Get Watched Videos by Your Friends	🟠	py
✅	1312	Minimum Insertion Steps to Make a String Palindrome	🔴	py
✅	1313	Decompress Run-Length Encoded List	🟢	py
✅	1314	Matrix Block Sum	🟠	py
✅	1315	Sum of Nodes with Even-Valued Grandparent	🟠	py
	1316	Distinct Echo Substrings	🔴
✅	1317	Convert Integer to the Sum of Two No-Zero Integers	🟢	py
✅	1318	Minimum Flips to Make a OR b Equal to c	🟠	py
✅	1319	Number of Operations to Make Network Connected	🟠	py
	1320	Minimum Distance to Type a Word Using Two Fingers	🔴
	🔒 1321	Restaurant Growth	🟠
	🔒 1322	Ads Performance	🟢
✅	1323	Maximum 69 Number	🟢	py
✅	1324	Print Words Vertically	🟠	py
✅	1325	Delete Leaves With a Given Value	🟠	py
✅	1326	Minimum Number of Taps to Open to Water a Garden	🔴	py
	🔒 1327	List the Products Ordered in a Period	🟢
✅	1328	Break a Palindrome	🟠	py
✅	1329	Sort the Matrix Diagonally	🟠	py
	1330	Reverse Subarray To Maximize Array Value	🔴
✅	1331	Rank Transform of an Array	🟢	py
✅	1332	Remove Palindromic Subsequences	🟢	py
	1333	Filter Restaurants by Vegan-Friendly, Price and Distance	🟠
✅	1334	Find the City With the Smallest Number of Neighbors at a Threshold Distance	🟠	py
✅	1335	Minimum Difficulty of a Job Schedule	🔴	py
	🔒 1336	Number of Transactions per Visit	🔴
✅	1337	The K Weakest Rows in a Matrix	🟢	py
✅	1338	Reduce Array Size to The Half	🟠	py cpp
✅	1339	Maximum Product of Splitted Binary Tree	🟠	py
	1340	Jump Game V	🔴
	🔒 1341	Movie Rating	🟠
✅	1342	Number of Steps to Reduce a Number to Zero	🟢	py cpp
✅	1343	Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold	🟠	py
✅	1344	Angle Between Hands of a Clock	🟠	py
✅	1345	Jump Game IV	🔴	py
✅	1346	Check If N and Its Double Exist	🟢	py
✅	1347	Minimum Number of Steps to Make Two Strings Anagram	🟠	py
✅	1348	Tweet Counts Per Frequency	🟠	py
✅	1349	Maximum Students Taking Exam	🔴	py
	🔒 1350	Students With Invalid Departments	🟢
✅	1351	Count Negative Numbers in a Sorted Matrix	🟢	py
✅	1352	Product of the Last K Numbers	🟠	py
✅	1353	Maximum Number of Events That Can Be Attended	🟠	cpp
✅	1354	Construct Target Array With Multiple Sums	🔴	py
	🔒 1355	Activity Participants	🟠
✅	1356	Sort Integers by The Number of 1 Bits	🟢	py
✅	1357	Apply Discount Every n Orders	🟠	py
✅	1358	Number of Substrings Containing All Three Characters	🟠	py
✅	1359	Count All Valid Pickup and Delivery Options	🔴	py
✅	1360	Number of Days Between Two Dates	🟢	py
✅	1361	Validate Binary Tree Nodes	🟠	py cpp
✅	1362	Closest Divisors	🟠	py
	1363	Largest Multiple of Three	🔴
	🔒 1364	Number of Trusted Contacts of a Customer	🟠
✅	1365	How Many Numbers Are Smaller Than the Current Number	🟢	py
✅	1366	Rank Teams by Votes	🟠	py
✅	1367	Linked List in Binary Tree	🟠	py
✅	1368	Minimum Cost to Make at Least One Valid Path in a Grid	🔴	py
	🔒 1369	Get the Second Most Recent Activity	🔴
✅	1370	Increasing Decreasing String	🟢	py cpp
✅	1371	Find the Longest Substring Containing Vowels in Even Counts	🟠	py
	1372	Longest ZigZag Path in a Binary Tree	🟠
	1373	Maximum Sum BST in Binary Tree	🔴
✅	1374	Generate a String With Characters That Have Odd Counts	🟢	py
✅	1375	Number of Times Binary String Is Prefix-Aligned	🟠	py cpp
✅	1376	Time Needed to Inform All Employees	🟠	py
	1377	Frog Position After T Seconds	🔴
	🔒 1378	Replace Employee ID With The Unique Identifier	🟢
✅	1379	Find a Corresponding Node of a Binary Tree in a Clone of That Tree	🟢	py
✅	1380	Lucky Numbers in a Matrix	🟢	py
✅	1381	Design a Stack With Increment Operation	🟠	py
✅	1382	Balance a Binary Search Tree	🟠	py
✅	1383	Maximum Performance of a Team	🔴	py
	🔒 1384	Total Sales Amount by Year	🔴
✅	1385	Find the Distance Value Between Two Arrays	🟢	py
✅	1386	Cinema Seat Allocation	🟠	py
✅	1387	Sort Integers by The Power Value	🟠	py cpp
✅	1388	Pizza With 3n Slices	🔴	py
✅	1389	Create Target Array in the Given Order	🟢	py
✅	1390	Four Divisors	🟠	py
	1391	Check if There is a Valid Path in a Grid	🟠
	1392	Longest Happy Prefix	🔴
	1393	Capital Gain/Loss	🟠
✅	1394	Find Lucky Integer in an Array	🟢	py
✅	1395	Count Number of Teams	🟠	py
✅	1396	Design Underground System	🟠	py
	1397	Find All Good Strings	🔴
	🔒 1398	Customers Who Bought Products A and B but Not C	🟠
✅	1399	Count Largest Group	🟢	py
✅	1400	Construct K Palindrome Strings	🟠	py
✅	1401	Circle and Rectangle Overlapping	🟠	cpp
✅	1402	Reducing Dishes	🔴	py
✅	1403	Minimum Subsequence in Non-Increasing Order	🟢	py cpp
✅	1404	Number of Steps to Reduce a Number in Binary Representation to One	🟠	py cpp
✅	1405	Longest Happy String	🟠	py
	1406	Stone Game III	🔴
	1407	Top Travellers	🟢
✅	1408	String Matching in an Array	🟢	py
✅	1409	Queries on a Permutation With Key	🟠	py
✅	1410	HTML Entity Parser	🟠	py
✅	1411	Number of Ways to Paint N × 3 Grid	🔴	py
	🔒 1412	Find the Quiet Students in All Exams	🔴
✅	1413	Minimum Value to Get Positive Step by Step Sum	🟢	py
✅	1414	Find the Minimum Number of Fibonacci Numbers Whose Sum Is K	🟠	py
✅	1415	The k-th Lexicographical String of All Happy Strings of Length n	🟠	py
	1416	Restore The Array	🔴
✅	1417	Reformat The String	🟢	py
✅	1418	Display Table of Food Orders in a Restaurant	🟠	py
✅	1419	Minimum Number of Frogs Croaking	🟠	py
	1420	Build Array Where You Can Find The Maximum Exactly K Comparisons	🔴
	🔒 1421	NPV Queries	🟢
✅	1422	Maximum Score After Splitting a String	🟢	py
✅	1423	Maximum Points You Can Obtain from Cards	🟠	py
✅	1424	Diagonal Traverse II	🟠	py
✅	1425	Constrained Subsequence Sum	🔴	py
✅	🔒 1426	Counting Elements	🟢	py
✅	🔒 1427	Perform String Shifts	🟢	py
✅	🔒 1428	Leftmost Column with at Least a One	🟠	py
	🔒 1429	First Unique Number	🟠
	🔒 1430	Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree	🟠
✅	1431	Kids With the Greatest Number of Candies	🟢	py
✅	1432	Max Difference You Can Get From Changing an Integer	🟠	py
✅	1433	Check If a String Can Break Another String	🟠	py
✅	1434	Number of Ways to Wear Different Hats to Each Other	🔴	py
	🔒 1435	Create a Session Bar Chart	🟢
✅	1436	Destination City	🟢	py
✅	1437	Check If All 1's Are at Least Length K Places Away	🟢	py
✅	1438	Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit	🟠	py
	1439	Find the Kth Smallest Sum of a Matrix With Sorted Rows	🔴
	🔒 1440	Evaluate Boolean Expression	🟠
✅	1441	Build an Array With Stack Operations	🟠	py
✅	1442	Count Triplets That Can Form Two Arrays of Equal XOR	🟠	py
✅	1443	Minimum Time to Collect All Apples in a Tree	🟠	py
	1444	Number of Ways of Cutting a Pizza	🔴
	🔒 1445	Apples & Oranges	🟠
✅	1446	Consecutive Characters	🟢	py
✅	1447	Simplified Fractions	🟠	py
✅	1448	Count Good Nodes in Binary Tree	🟠	py
	1449	Form Largest Integer With Digits That Add up to Target	🔴
✅	1450	Number of Students Doing Homework at a Given Time	🟢	py
✅	1451	Rearrange Words in a Sentence	🟠	py
✅	1452	People Whose List of Favorite Companies Is Not a Subset of Another List	🟠	py
	1453	Maximum Number of Darts Inside of a Circular Dartboard	🔴
	🔒 1454	Active Users	🟠
✅	1455	Check If a Word Occurs As a Prefix of Any Word in a Sentence	🟢	py
✅	1456	Maximum Number of Vowels in a Substring of Given Length	🟠	py
✅	1457	Pseudo-Palindromic Paths in a Binary Tree	🟠	py
	1458	Max Dot Product of Two Subsequences	🔴
	🔒 1459	Rectangles Area	🟠
✅	1460	Make Two Arrays Equal by Reversing Subarrays	🟢	py
✅	1461	Check If a String Contains All Binary Codes of Size K	🟠	py
	1462	Course Schedule IV	🟠
✅	1463	Cherry Pickup II	🔴	py
✅	1464	Maximum Product of Two Elements in an Array	🟢	py
✅	1465	Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts	🟠	py
✅	1466	Reorder Routes to Make All Paths Lead to the City Zero	🟠	py
	1467	Probability of a Two Boxes Having The Same Number of Distinct Balls	🔴
	🔒 1468	Calculate Salaries	🟠
	🔒 1469	Find All The Lonely Nodes	🟢
✅	1470	Shuffle the Array	🟢	py
	1471	The k Strongest Values in an Array	🟠
	1472	Design Browser History	🟠
✅	1473	Paint House III	🔴	py
	🔒 1474	Delete N Nodes After M Nodes of a Linked List	🟢
✅	1475	Final Prices With a Special Discount in a Shop	🟢	py
	1476	Subrectangle Queries	🟠
	1477	Find Two Non-overlapping Sub-arrays Each With Target Sum	🟠
	1478	Allocate Mailboxes	🔴
	🔒 1479	Sales by Day of the Week	🔴
✅	1480	Running Sum of 1d Array	🟢	py
	1481	Least Number of Unique Integers after K Removals	🟠
✅	1482	Minimum Number of Days to Make m Bouquets	🟠	py
	1483	Kth Ancestor of a Tree Node	🔴
	1484	Group Sold Products By The Date	🟢
	🔒 1485	Clone Binary Tree With Random Pointer	🟠
✅	1486	XOR Operation in an Array	🟢	py
	1487	Making File Names Unique	🟠
✅	1488	Avoid Flood in The City	🟠	py
	1489	Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree	🔴
	🔒 1490	Clone N-ary Tree	🟠
✅	1491	Average Salary Excluding the Minimum and Maximum Salary	🟢	py
✅	1492	The kth Factor of n	🟠	py
	1493	Longest Subarray of 1's After Deleting One Element	🟠
✅	1494	Parallel Courses II	🔴	py cpp
	🔒 1495	Friendly Movies Streamed Last Month	🟢
	1496	Path Crossing	🟢
	1497	Check If Array Pairs Are Divisible by k	🟠
✅	1498	Number of Subsequences That Satisfy the Given Sum Condition	🟠	py
	1499	Max Value of Equation	🔴
	🔒 1500	Design a File Sharing System	🟠
	🔒 1501	Countries You Can Safely Invest In	🟠
✅	1502	Can Make Arithmetic Progression From Sequence	🟢	py
	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	🔴
	🔒 1506	Find Root of N-Ary Tree	🟠
✅	1507	Reformat Date	🟢	py
✅	1508	Range Sum of Sorted Subarray Sums	🟠	py cpp
✅	1509	Minimum Difference Between Largest and Smallest Value in Three Moves	🟠	py cpp
✅	1510	Stone Game IV	🔴	py
	🔒 1511	Customer Order Frequency	🟢
✅	1512	Number of Good Pairs	🟢	py
✅	1513	Number of Substrings With Only 1s	🟠	py
✅	1514	Path with Maximum Probability	🟠	py
	1515	Best Position for a Service Centre	🔴
	🔒 1516	Move Sub-Tree of N-Ary Tree	🔴
	🔒 1517	Find Users With Valid E-Mails	🟢
✅	1518	Water Bottles	🟢	py cpp
✅	1519	Number of Nodes in the Sub-Tree With the Same Label	🟠	py
	1520	Maximum Number of Non-Overlapping Substrings	🔴
	1521	Find a Value of a Mysterious Function Closest to Target	🔴
	🔒 1522	Diameter of N-Ary Tree	🟠
✅	1523	Count Odd Numbers in an Interval Range	🟢	py
✅	1524	Number of Sub-arrays With Odd Sum	🟠	py cpp
✅	1525	Number of Good Ways to Split a String	🟠	py
✅	1526	Minimum Number of Increments on Subarrays to Form a Target Array	🔴	py
	1527	Patients With a Condition	🟢
✅	1528	Shuffle String	🟢	py cpp
✅	1529	Minimum Suffix Flips	🟠	cpp
	1530	Number of Good Leaf Nodes Pairs	🟠
✅	1531	String Compression II	🔴	py
	🔒 1532	The Most Recent Three Orders	🟠
	🔒 1533	Find the Index of the Large Integer	🟠
✅	1534	Count Good Triplets	🟢	py cpp
✅	1535	Find the Winner of an Array Game	🟠	cpp
	1536	Minimum Swaps to Arrange a Binary Grid	🟠
	1537	Get the Maximum Score	🔴
	🔒 1538	Guess the Majority in a Hidden Array	🟠
✅	1539	Kth Missing Positive Number	🟢	py
✅	1540	Can Convert String in K Moves	🟠	java
✅	1541	Minimum Insertions to Balance a Parentheses String	🟠	py
	1542	Find Longest Awesome Substring	🔴
	🔒 1543	Fix Product Name Format	🟢
✅	1544	Make The String Great	🟢	py
✅	1545	Find Kth Bit in Nth Binary String	🟠	py
✅	1546	Maximum Number of Non-Overlapping Subarrays With Sum Equals Target	🟠	py
✅	1547	Minimum Cost to Cut a Stick	🔴	py
	🔒 1548	The Most Similar Path in a Graph	🔴
	🔒 1549	The Most Recent Orders for Each Product	🟠
✅	1550	Three Consecutive Odds	🟢	py
✅	1551	Minimum Operations to Make Array Equal	🟠	py
✅	1552	Magnetic Force Between Two Balls	🟠	py
	1553	Minimum Number of Days to Eat N Oranges	🔴
	🔒 1554	Strings Differ by One Character	🟠
	🔒 1555	Bank Account Summary	🟠
✅	1556	Thousand Separator	🟢	py
✅	1557	Minimum Number of Vertices to Reach All Nodes	🟠	py
	1558	Minimum Numbers of Function Calls to Make Target Array	🟠
	1559	Detect Cycles in 2D Grid	🟠
✅	1560	Most Visited Sector in a Circular Track	🟢	py cpp
✅	1561	Maximum Number of Coins You Can Get	🟠	py
✅	1562	Find Latest Group of Size M	🟠	py cpp
	1563	Stone Game V	🔴
	🔒 1564	Put Boxes Into the Warehouse I	🟠
	🔒 1565	Unique Orders and Customers Per Month	🟢
✅	1566	Detect Pattern of Length M Repeated K or More Times	🟢	py cpp
✅	1567	Maximum Length of Subarray With Positive Product	🟠	py cpp java
✅	1568	Minimum Number of Days to Disconnect Island	🔴	py
	1569	Number of Ways to Reorder Array to Get Same BST	🔴
	🔒 1570	Dot Product of Two Sparse Vectors	🟠
	🔒 1571	Warehouse Manager	🟢
✅	1572	Matrix Diagonal Sum	🟢	py cpp
✅	1573	Number of Ways to Split a String	🟠	py
✅	1574	Shortest Subarray to be Removed to Make Array Sorted	🟠	py cpp
	1575	Count All Possible Routes	🔴
✅	1576	Replace All ?'s to Avoid Consecutive Repeating Characters	🟢	py
✅	1577	Number of Ways Where Square of Number Is Equal to Product of Two Numbers	🟠	py
✅	1578	Minimum Time to Make Rope Colorful	🟠	py
	1579	Remove Max Number of Edges to Keep Graph Fully Traversable	🔴
	🔒 1580	Put Boxes Into the Warehouse II	🟠
	1581	Customer Who Visited but Did Not Make Any Transactions	🟢
✅	1582	Special Positions in a Binary Matrix	🟢	py
✅	1583	Count Unhappy Friends	🟠	py
✅	1584	Min Cost to Connect All Points	🟠	py
	1585	Check If String Is Transformable With Substring Sort Operations	🔴
	🔒 1586	Binary Search Tree Iterator II	🟠
	1587	Bank Account Summary II	🟢
✅	1588	Sum of All Odd Length Subarrays	🟢	py
✅	1589	Maximum Sum Obtained of Any Permutation	🟠	py
✅	1590	Make Sum Divisible by P	🟠	py
	1591	Strange Printer II	🔴
✅	1592	Rearrange Spaces Between Words	🟢	py
✅	1593	Split a String Into the Max Number of Unique Substrings	🟠	py
✅	1594	Maximum Non Negative Product in a Matrix	🟠	py
	1595	Minimum Cost to Connect Two Groups of Points	🔴
	🔒 1596	The Most Frequently Ordered Products for Each Customer	🟠
	🔒 1597	Build Binary Expression Tree From Infix Expression	🔴
✅	1598	Crawler Log Folder	🟢	py
✅	1599	Maximum Profit of Operating a Centennial Wheel	🟠	py
	1600	Throne Inheritance	🟠
	1601	Maximum Number of Achievable Transfer Requests	🔴
	🔒 1602	Find Nearest Right Node in Binary Tree	🟠
✅	1603	Design Parking System	🟢	py
✅	1604	Alert Using Same Key-Card Three or More Times in a One Hour Period	🟠	py
✅	1605	Find Valid Matrix Given Row and Column Sums	🟠	py
	1606	Find Servers That Handled Most Number of Requests	🔴
	🔒 1607	Sellers With No Sales	🟢
✅	1608	Special Array With X Elements Greater Than or Equal X	🟢	py
✅	1609	Even Odd Tree	🟠	py
✅	1610	Maximum Number of Visible Points	🔴	py
	1611	Minimum One Bit Operations to Make Integers Zero	🔴
	🔒 1612	Check If Two Expression Trees are Equivalent	🟠
	🔒 1613	Find the Missing IDs	🟠
✅	1614	Maximum Nesting Depth of the Parentheses	🟢	py
✅	1615	Maximal Network Rank	🟠	py
✅	1616	Split Two Strings to Make Palindrome	🟠	py cpp
	1617	Count Subtrees With Max Distance Between Cities	🔴
	🔒 1618	Maximum Font to Fit a Sentence in a Screen	🟠
✅	1619	Mean of Array After Removing Some Elements	🟢	py
✅	1620	Coordinate With Maximum Network Quality	🟠	py
	1621	Number of Sets of K Non-Overlapping Line Segments	🟠
	1622	Fancy Sequence	🔴
	🔒 1623	All Valid Triplets That Can Represent a Country	🟢
✅	1624	Largest Substring Between Two Equal Characters	🟢	py
✅	1625	Lexicographically Smallest String After Applying Operations	🟠	py
✅	1626	Best Team With No Conflicts	🟠	py
	1627	Graph Connectivity With Threshold	🔴
	🔒 1628	Design an Expression Tree With Evaluate Function	🟠
✅	1629	Slowest Key	🟢	py
✅	1630	Arithmetic Subarrays	🟠	py
✅	1631	Path With Minimum Effort	🟠	py
✅	1632	Rank Transform of a Matrix	🔴	py
	🔒 1633	Percentage of Users Attended a Contest	🟢
	🔒 1634	Add Two Polynomials Represented as Linked Lists	🟠
	🔒 1635	Hopper Company Queries I	🔴
✅	1636	Sort Array by Increasing Frequency	🟢	py
✅	1637	Widest Vertical Area Between Two Points Containing No Points	🟠	py
✅	1638	Count Substrings That Differ by One Character	🟠	py
✅	1639	Number of Ways to Form a Target String Given a Dictionary	🔴	py
✅	1640	Check Array Formation Through Concatenation	🟢	py
✅	1641	Count Sorted Vowel Strings	🟠	py
✅	1642	Furthest Building You Can Reach	🟠	py
	1643	Kth Smallest Instructions	🔴
	🔒 1644	Lowest Common Ancestor of a Binary Tree II	🟠
	🔒 1645	Hopper Company Queries II	🔴
✅	1646	Get Maximum in Generated Array	🟢	py
✅	1647	Minimum Deletions to Make Character Frequencies Unique	🟠	py
✅	1648	Sell Diminishing-Valued Colored Balls	🟠	py
✅	1649	Create Sorted Array through Instructions	🔴	py
	🔒 1650	Lowest Common Ancestor of a Binary Tree III	🟠
	🔒 1651	Hopper Company Queries III	🔴
✅	1652	Defuse the Bomb	🟢	py
✅	1653	Minimum Deletions to Make String Balanced	🟠	py
✅	1654	Minimum Jumps to Reach Home	🟠	py
✅	1655	Distribute Repeating Integers	🔴	py
✅	1656	Design an Ordered Stream	🟢	py
✅	1657	Determine if Two Strings Are Close	🟠	py
✅	1658	Minimum Operations to Reduce X to Zero	🟠	py
✅	1659	Maximize Grid Happiness	🔴	py
	🔒 1660	Correct a Binary Tree	🟠
	🔒 1661	Average Time of Process per Machine	🟢
✅	1662	Check If Two String Arrays are Equivalent	🟢	py cpp
✅	1663	Smallest String With A Given Numeric Value	🟠	py
✅	1664	Ways to Make a Fair Array	🟠	py
✅	1665	Minimum Initial Energy to Finish Tasks	🔴	py
	🔒 1666	Change the Root of a Binary Tree	🟠
	1667	Fix Names in a Table	🟢
✅	1668	Maximum Repeating Substring	🟢	py
✅	1669	Merge In Between Linked Lists	🟠	py cpp
✅	1670	Design Front Middle Back Queue	🟠	py
	1671	Minimum Number of Removals to Make Mountain Array	🔴
✅	1672	Richest Customer Wealth	🟢	py
✅	1673	Find the Most Competitive Subsequence	🟠	py
	1674	Minimum Moves to Make Array Complementary	🟠
✅	1675	Minimize Deviation in Array	🔴	py
	🔒 1676	Lowest Common Ancestor of a Binary Tree IV	🟠
	🔒 1677	Product's Worth Over Invoices	🟢
✅	1678	Goal Parser Interpretation	🟢	py
✅	1679	Max Number of K-Sum Pairs	🟠	py
✅	1680	Concatenation of Consecutive Binary Numbers	🟠	py
✅	1681	Minimum Incompatibility	🔴	py
	🔒 1682	Longest Palindromic Subsequence II	🟠
	🔒 1683	Invalid Tweets	🟢
✅	1684	Count the Number of Consistent Strings	🟢	py
✅	1685	Sum of Absolute Differences in a Sorted Array	🟠	py
✅	1686	Stone Game VI	🟠	py
	1687	Delivering Boxes from Storage to Ports	🔴
✅	1688	Count of Matches in Tournament	🟢	py
✅	1689	Partitioning Into Minimum Number Of Deci-Binary Numbers	🟠	py
✅	1690	Stone Game VII	🟠	py
	1691	Maximum Height by Stacking Cuboids	🔴
	🔒 1692	Count Ways to Distribute Candies	🔴
	1693	Daily Leads and Partners	🟢
✅	1694	Reformat Phone Number	🟢	py
✅	1695	Maximum Erasure Value	🟠	py
✅	1696	Jump Game VI	🟠	py
	1697	Checking Existence of Edge Length Limited Paths	🔴
	🔒 1698	Number of Distinct Substrings in a String	🟠
	🔒 1699	Number of Calls Between Two Persons	🟠
✅	1700	Number of Students Unable to Eat Lunch	🟢	py
✅	1701	Average Waiting Time	🟠	py
✅	1702	Maximum Binary String After Change	🟠	py
✅	1703	Minimum Adjacent Swaps for K Consecutive Ones	🔴	py
✅	1704	Determine if String Halves Are Alike	🟢	py
✅	1705	Maximum Number of Eaten Apples	🟠	py
✅	1706	Where Will the Ball Fall	🟠	py
	1707	Maximum XOR With an Element From Array	🔴
	🔒 1708	Largest Subarray Length K	🟢
	🔒 1709	Biggest Window Between Visits	🟠
✅	1710	Maximum Units on a Truck	🟢	py
✅	1711	Count Good Meals	🟠	py
✅	1712	Ways to Split Array Into Three Subarrays	🟠	py cpp java
✅	1713	Minimum Operations to Make a Subsequence	🔴	py
	🔒 1714	Sum Of Special Evenly-Spaced Elements In Array	🔴
	🔒 1715	Count Apples and Oranges	🟠
✅	1716	Calculate Money in Leetcode Bank	🟢	py
✅	1717	Maximum Score From Removing Substrings	🟠	py
✅	1718	Construct the Lexicographically Largest Valid Sequence	🟠	py
	1719	Number Of Ways To Reconstruct A Tree	🔴
✅	1720	Decode XORed Array	🟢	py
✅	1721	Swapping Nodes in a Linked List	🟠	py
✅	1722	Minimize Hamming Distance After Swap Operations	🟠	py
✅	1723	Find Minimum Time to Finish All Jobs	🔴	py
	🔒 1724	Checking Existence of Edge Length Limited Paths II	🔴
✅	1725	Number Of Rectangles That Can Form The Largest Square	🟢	py
✅	1726	Tuple with Same Product	🟠	py
✅	1727	Largest Submatrix With Rearrangements	🟠	py
	1728	Cat and Mouse II	🔴
	1729	Find Followers Count	🟢
	🔒 1730	Shortest Path to Get Food	🟠
	🔒 1731	The Number of Employees Which Report to Each Employee	🟢
✅	1732	Find the Highest Altitude	🟢	py
✅	1733	Minimum Number of People to Teach	🟠	py
✅	1734	Decode XORed Permutation	🟠	py
	1735	Count Ways to Make Array With Product	🔴
✅	1736	Latest Time by Replacing Hidden Digits	🟢	py
✅	1737	Change Minimum Characters to Satisfy One of Three Conditions	🟠	py
✅	1738	Find Kth Largest XOR Coordinate Value	🟠	py
	1739	Building Boxes	🔴
	🔒 1740	Find Distance in a Binary Tree	🟠
	1741	Find Total Time Spent by Each Employee	🟢
✅	1742	Maximum Number of Balls in a Box	🟢	py
✅	1743	Restore the Array From Adjacent Pairs	🟠	py
✅	1744	Can You Eat Your Favorite Candy on Your Favorite Day?	🟠	py
	1745	Palindrome Partitioning IV	🔴
	🔒 1746	Maximum Subarray Sum After One Operation	🟠
	🔒 1747	Leetflex Banned Accounts	🟠
✅	1748	Sum of Unique Elements	🟢	py
✅	1749	Maximum Absolute Sum of Any Subarray	🟠	py
✅	1750	Minimum Length of String After Deleting Similar Ends	🟠	py
	1751	Maximum Number of Events That Can Be Attended II	🔴
✅	1752	Check if Array Is Sorted and Rotated	🟢	py
✅	1753	Maximum Score From Removing Stones	🟠	py cpp
✅	1754	Largest Merge Of Two Strings	🟠	py cpp
✅	1755	Closest Subsequence Sum	🔴	py
	🔒 1756	Design Most Recently Used Queue	🟠
	1757	Recyclable and Low Fat Products	🟢
✅	1758	Minimum Changes To Make Alternating Binary String	🟢	py
✅	1759	Count Number of Homogenous Substrings	🟠	py
✅	1760	Minimum Limit of Balls in a Bag	🟠	py
	1761	Minimum Degree of a Connected Trio in a Graph	🔴
	🔒 1762	Buildings With an Ocean View	🟠
✅	1763	Longest Nice Substring	🟢	py
✅	1764	Form Array by Concatenating Subarrays of Another Array	🟠	py
✅	1765	Map of Highest Peak	🟠	py
	1766	Tree of Coprimes	🔴
	🔒 1767	Find the Subtasks That Did Not Execute	🔴
✅	1768	Merge Strings Alternately	🟢	py
✅	1769	Minimum Number of Operations to Move All Balls to Each Box	🟠	py
✅	1770	Maximum Score from Performing Multiplication Operations	🔴	py
	1771	Maximize Palindrome Length From Subsequences	🔴
	🔒 1772	Sort Features by Popularity	🟠
✅	1773	Count Items Matching a Rule	🟢	py
✅	1774	Closest Dessert Cost	🟠	py
✅	1775	Equal Sum Arrays With Minimum Number of Operations	🟠	py
	1776	Car Fleet II	🔴
	🔒 1777	Product's Price for Each Store	🟢
	🔒 1778	Shortest Path in a Hidden Grid	🟠
✅	1779	Find Nearest Point That Has the Same X or Y Coordinate	🟢	py
✅	1780	Check if Number is a Sum of Powers of Three	🟠	py
✅	1781	Sum of Beauty of All Substrings	🟠	py
	1782	Count Pairs Of Nodes	🔴
	🔒 1783	Grand Slam Titles	🟠
✅	1784	Check if Binary String Has at Most One Segment of Ones	🟢	py
✅	1785	Minimum Elements to Add to Form a Given Sum	🟠	py
✅	1786	Number of Restricted Paths From First to Last Node	🟠	py
	1787	Make the XOR of All Segments Equal to Zero	🔴
	🔒 1788	Maximize the Beauty of the Garden	🔴
	🔒 1789	Primary Department for Each Employee	🟢
✅	1790	Check if One String Swap Can Make Strings Equal	🟢	py
✅	1791	Find Center of Star Graph	🟢	py
✅	1792	Maximum Average Pass Ratio	🟠	py
✅	1793	Maximum Score of a Good Subarray	🔴	py
	🔒 1794	Count Pairs of Equal Substrings With Minimum Difference	🟠
	1795	Rearrange Products Table	🟢
✅	1796	Second Largest Digit in a String	🟢	py
✅	1797	Design Authentication Manager	🟠	py
✅	1798	Maximum Number of Consecutive Values You Can Make	🟠	py
✅	1799	Maximize Score After N Operations	🔴	py
✅	1800	Maximum Ascending Subarray Sum	🟢	py
✅	1801	Number of Orders in the Backlog	🟠	py
✅	1802	Maximum Value at a Given Index in a Bounded Array	🟠	py
	1803	Count Pairs With XOR in a Range	🔴
	🔒 1804	Implement Trie II (Prefix Tree)	🟠
✅	1805	Number of Different Integers in a String	🟢	py
✅	1806	Minimum Number of Operations to Reinitialize a Permutation	🟠	py
✅	1807	Evaluate the Bracket Pairs of a String	🟠	py
	1808	Maximize Number of Nice Divisors	🔴
	🔒 1809	Ad-Free Sessions	🟢
	🔒 1810	Minimum Path Cost in a Hidden Grid	🟠
	🔒 1811	Find Interview Candidates	🟠
✅	1812	Determine Color of a Chessboard Square	🟢	py
✅	1813	Sentence Similarity III	🟠	py
✅	1814	Count Nice Pairs in an Array	🟠	py
	1815	Maximum Number of Groups Getting Fresh Donuts	🔴
✅	1816	Truncate Sentence	🟢	py
✅	1817	Finding the Users Active Minutes	🟠	py
✅	1818	Minimum Absolute Sum Difference	🟠	py
	1819	Number of Different Subsequences GCDs	🔴
	🔒 1820	Maximum Number of Accepted Invitations	🟠
	🔒 1821	Find Customers With Positive Revenue this Year	🟢
✅	1822	Sign of the Product of an Array	🟢	py
✅	1823	Find the Winner of the Circular Game	🟠	py
✅	1824	Minimum Sideway Jumps	🟠	py
✅	1825	Finding MK Average	🔴	py
	🔒 1826	Faulty Sensor	🟢
✅	1827	Minimum Operations to Make the Array Increasing	🟢	py
✅	1828	Queries on Number of Points Inside a Circle	🟠	py
✅	1829	Maximum XOR for Each Query	🟠	py
	1830	Minimum Number of Operations to Make String Sorted	🔴
	🔒 1831	Maximum Transaction Each Day	🟠
✅	1832	Check if the Sentence Is Pangram	🟢	py
✅	1833	Maximum Ice Cream Bars	🟠	py
✅	1834	Single-Threaded CPU	🟠	py
✅	1835	Find XOR Sum of All Pairs Bitwise AND	🔴	py
	🔒 1836	Remove Duplicates From an Unsorted Linked List	🟠
✅	1837	Sum of Digits in Base K	🟢	py
✅	1838	Frequency of the Most Frequent Element	🟠	py
✅	1839	Longest Substring Of All Vowels in Order	🟠	py
	1840	Maximum Building Height	🔴
	🔒 1841	League Statistics	🟠
	🔒 1842	Next Palindrome Using Same Digits	🔴
	🔒 1843	Suspicious Bank Accounts	🟠
✅	1844	Replace All Digits with Characters	🟢	py
✅	1845	Seat Reservation Manager	🟠	py
✅	1846	Maximum Element After Decreasing and Rearranging	🟠	py
✅	1847	Closest Room	🔴	py
✅	1848	Minimum Distance to the Target Element	🟢	py
✅	1849	Splitting a String Into Descending Consecutive Values	🟠	py
✅	1850	Minimum Adjacent Swaps to Reach the Kth Smallest Number	🟠	py
✅	1851	Minimum Interval to Include Each Query	🔴	py
	🔒 1852	Distinct Numbers in Each Subarray	🟠
	🔒 1853	Convert Date Format	🟢
✅	1854	Maximum Population Year	🟢	py
✅	1855	Maximum Distance Between a Pair of Values	🟠	py
✅	1856	Maximum Subarray Min-Product	🟠	py
	1857	Largest Color Value in a Directed Graph	🔴
	🔒 1858	Longest Word With All Prefixes	🟠
✅	1859	Sorting the Sentence	🟢	py
✅	1860	Incremental Memory Leak	🟠	py
✅	1861	Rotating the Box	🟠	py cpp
✅	1862	Sum of Floored Pairs	🔴	py cpp
✅	1863	Sum of All Subset XOR Totals	🟢	py
✅	1864	Minimum Number of Swaps to Make the Binary String Alternating	🟠	py
✅	1865	Finding Pairs With a Certain Sum	🟠	py
✅	1866	Number of Ways to Rearrange Sticks With K Sticks Visible	🔴	py
	🔒 1867	Orders With Maximum Quantity Above Average	🟠
	🔒 1868	Product of Two Run-Length Encoded Arrays	🟠
✅	1869	Longer Contiguous Segments of Ones than Zeros	🟢	py
✅	1870	Minimum Speed to Arrive on Time	🟠	py
✅	1871	Jump Game VII	🟠	py
✅	1872	Stone Game VIII	🔴	py
	1873	Calculate Special Bonus	🟢
	🔒 1874	Minimize Product Sum of Two Arrays	🟠
	🔒 1875	Group Employees of the Same Salary	🟠
✅	1876	Substrings of Size Three with Distinct Characters	🟢	py
✅	1877	Minimize Maximum Pair Sum in Array	🟠	py
✅	1878	Get Biggest Three Rhombus Sums in a Grid	🟠	py
✅	1879	Minimum XOR Sum of Two Arrays	🔴	py
✅	1880	Check if Word Equals Summation of Two Words	🟢	py
✅	1881	Maximum Value after Insertion	🟠	py
✅	1882	Process Tasks Using Servers	🟠	py
	1883	Minimum Skips to Arrive at Meeting On Time	🔴
	1884	Egg Drop With 2 Eggs and N Floors	🟠
	🔒 1885	Count Pairs in Two Arrays	🟠
✅	1886	Determine Whether Matrix Can Be Obtained By Rotation	🟢	py
✅	1887	Reduction Operations to Make the Array Elements Equal	🟠	py
✅	1888	Minimum Number of Flips to Make the Binary String Alternating	🟠	py
✅	1889	Minimum Space Wasted From Packaging	🔴	py
	1890	The Latest Login in 2020	🟢
	🔒 1891	Cutting Ribbons	🟠
	🔒 1892	Page Recommendations II	🔴
✅	1893	Check if All the Integers in a Range Are Covered	🟢	py
✅	1894	Find the Student that Will Replace the Chalk	🟠	py
✅	1895	Largest Magic Square	🟠	py
	1896	Minimum Cost to Change the Final Value of Expression	🔴
✅	1897	Redistribute Characters to Make All Strings Equal	🟢	py
✅	1898	Maximum Number of Removable Characters	🟠	py
✅	1899	Merge Triplets to Form Target Triplet	🟠	py
	1900	The Earliest and Latest Rounds Where Players Compete	🔴
✅	1901	Find a Peak Element II	🟠	py
	🔒 1902	Depth of BST Given Insertion Order	🟠
✅	1903	Largest Odd Number in String	🟢	py
✅	1904	The Number of Full Rounds You Have Played	🟠	py
✅	1905	Count Sub Islands	🟠	py
✅	1906	Minimum Absolute Difference Queries	🟠	py
	🔒 1907	Count Salary Categories	🟠
	🔒 1908	Game of Nim	🟠
✅	1909	Remove One Element to Make the Array Strictly Increasing	🟢	py
✅	1910	Remove All Occurrences of a Substring	🟠	py
✅	1911	Maximum Alternating Subsequence Sum	🟠	py
✅	1912	Design Movie Rental System	🔴	py
✅	1913	Maximum Product Difference Between Two Pairs	🟢	py
✅	1914	Cyclically Rotating a Grid	🟠	py
✅	1915	Number of Wonderful Substrings	🟠	py
	1916	Count Ways to Build Rooms in an Ant Colony	🔴
	🔒 1917	Leetcodify Friends Recommendations	🔴
	🔒 1918	Kth Smallest Subarray Sum	🟠
	🔒 1919	Leetcodify Similar Friends	🔴
✅	1920	Build Array from Permutation	🟢	py
✅	1921	Eliminate Maximum Number of Monsters	🟠	py
✅	1922	Count Good Numbers	🟠	py cpp
	1923	Longest Common Subpath	🔴
	🔒 1924	Erect the Fence II	🔴
✅	1925	Count Square Sum Triples	🟢	py
✅	1926	Nearest Exit from Entrance in Maze	🟠	py
✅	1927	Sum Game	🟠	py
	1928	Minimum Cost to Reach Destination in Time	🔴
✅	1929	Concatenation of Array	🟢	py
✅	1930	Unique Length-3 Palindromic Subsequences	🟠	py
	1931	Painting a Grid With Three Different Colors	🔴
	1932	Merge BSTs to Create Single BST	🔴
	🔒 1933	Check if String Is Decomposable Into Value-Equal Substrings	🟢
	🔒 1934	Confirmation Rate	🟠
✅	1935	Maximum Number of Words You Can Type	🟢	py
✅	1936	Add Minimum Number of Rungs	🟠	py
✅	1937	Maximum Number of Points with Cost	🟠	py
	1938	Maximum Genetic Difference Query	🔴
	🔒 1939	Users That Actively Request Confirmation Messages	🟢
	🔒 1940	Longest Common Subsequence Between Sorted Arrays	🟠
✅	1941	Check if All Characters Have Equal Number of Occurrences	🟢	py
✅	1942	The Number of the Smallest Unoccupied Chair	🟠	py
✅	1943	Describe the Painting	🟠	py
✅	1944	Number of Visible People in a Queue	🔴	py
✅	1945	Sum of Digits of String After Convert	🟢	py
✅	1946	Largest Number After Mutating Substring	🟠	py
✅	1947	Maximum Compatibility Score Sum	🟠	py
	1948	Delete Duplicate Folders in System	🔴
	🔒 1949	Strong Friendship	🟠
	🔒 1950	Maximum of Minimum Values in All Subarrays	🟠
	🔒 1951	All the Pairs With the Maximum Number of Common Followers	🟠
✅	1952	Three Divisors	🟢	py
✅	1953	Maximum Number of Weeks for Which You Can Work	🟠	py
✅	1954	Minimum Garden Perimeter to Collect Enough Apples	🟠	py
✅	1955	Count Number of Special Subsequences	🔴	py
	🔒 1956	Minimum Time For K Virus Variants to Spread	🔴
✅	1957	Delete Characters to Make Fancy String	🟢	py
✅	1958	Check if Move is Legal	🟠	py
	1959	Minimum Total Space Wasted With K Resizing Operations	🟠
	1960	Maximum Product of the Length of Two Palindromic Substrings	🔴
✅	1961	Check If String Is a Prefix of Array	🟢	py
✅	1962	Remove Stones to Minimize the Total	🟠	py
✅	1963	Minimum Number of Swaps to Make the String Balanced	🟠	py
✅	1964	Find the Longest Valid Obstacle Course at Each Position	🔴	py
	1965	Employees With Missing Information	🟢
	🔒 1966	Binary Searchable Numbers in an Unsorted Array	🟠
✅	1967	Number of Strings That Appear as Substrings in Word	🟢	py
✅	1968	Array With Elements Not Equal to Average of Neighbors	🟠	py
✅	1969	Minimum Non-Zero Product of the Array Elements	🟠	py
✅	1970	Last Day Where You Can Still Cross	🔴	py
✅	1971	Find if Path Exists in Graph	🟢	py
	🔒 1972	First and Last Call On the Same Day	🔴
	🔒 1973	Count Nodes Equal to Sum of Descendants	🟠
✅	1974	Minimum Time to Type Word Using Special Typewriter	🟢	py
✅	1975	Maximum Matrix Sum	🟠	py
✅	1976	Number of Ways to Arrive at Destination	🟠	py
	1977	Number of Ways to Separate Numbers	🔴
	🔒 1978	Employees Whose Manager Left the Company	🟢
✅	1979	Find Greatest Common Divisor of Array	🟢	py
✅	1980	Find Unique Binary String	🟠	py
✅	1981	Minimize the Difference Between Target and Chosen Elements	🟠	py
	1982	Find Array Given Subset Sums	🔴
	🔒 1983	Widest Pair of Indices With Equal Range Sum	🟠
✅	1984	Minimum Difference Between Highest and Lowest of K Scores	🟢	py
✅	1985	Find the Kth Largest Integer in the Array	🟠	py
✅	1986	Minimum Number of Work Sessions to Finish the Tasks	🟠	py
	1987	Number of Unique Good Subsequences	🔴
	🔒 1988	Find Cutoff Score for Each School	🟠
	🔒 1989	Maximum Number of People That Can Be Caught in Tag	🟠
	🔒 1990	Count the Number of Experiments	🟠
✅	1991	Find the Middle Index in Array	🟢	py
✅	1992	Find All Groups of Farmland	🟠	py
✅	1993	Operations on Tree	🟠	py
	1994	The Number of Good Subsets	🔴
✅	1995	Count Special Quadruplets	🟢	py
✅	1996	The Number of Weak Characters in the Game	🟠	py
✅	1997	First Day Where You Have Been in All the Rooms	🟠	py
	1998	GCD Sort of an Array	🔴
	🔒 1999	Smallest Greater Multiple Made of Two Digits	🟠
✅	2000	Reverse Prefix of Word	🟢	py
✅	2001	Number of Pairs of Interchangeable Rectangles	🟠	py
✅	2002	Maximum Product of the Length of Two Palindromic Subsequences	🟠	py
	2003	Smallest Missing Genetic Value in Each Subtree	🔴
	🔒 2004	The Number of Seniors and Juniors to Join the Company	🔴
	🔒 2005	Subtree Removal Game with Fibonacci Tree	🔴
✅	2006	Count Number of Pairs With Absolute Difference K	🟢	py
✅	2007	Find Original Array From Doubled Array	🟠	py
✅	2008	Maximum Earnings From Taxi	🟠	py
✅	2009	Minimum Number of Operations to Make Array Continuous	🔴	py
	🔒 2010	The Number of Seniors and Juniors to Join the Company II	🔴
✅	2011	Final Value of Variable After Performing Operations	🟢	py
✅	2012	Sum of Beauty in the Array	🟠	py
✅	2013	Detect Squares	🟠	py
✅	2014	Longest Subsequence Repeated k Times	🔴	py
	🔒 2015	Average Height of Buildings in Each Segment	🟠
✅	2016	Maximum Difference Between Increasing Elements	🟢	py
✅	2017	Grid Game	🟠	py
✅	2018	Check if Word Can Be Placed In Crossword	🟠	py
✅	2019	The Score of Students Solving Math Expression	🔴	py
	🔒 2020	Number of Accounts That Did Not Stream	🟠
	🔒 2021	Brightest Position on Street	🟠
✅	2022	Convert 1D Array Into 2D Array	🟢	py
✅	2023	Number of Pairs of Strings With Concatenation Equal to Target	🟠	py
✅	2024	Maximize the Confusion of an Exam	🟠	py
	2025	Maximum Number of Ways to Partition an Array	🔴
	🔒 2026	Low-Quality Problems	🟢
✅	2027	Minimum Moves to Convert String	🟢	py
✅	2028	Find Missing Observations	🟠	py
	2029	Stone Game IX	🟠
	2030	Smallest K-Length Subsequence With Occurrences of a Letter	🔴
	🔒 2031	Count Subarrays With More Ones Than Zeros	🟠
✅	2032	Two Out of Three	🟢	py
✅	2033	Minimum Operations to Make a Uni-Value Grid	🟠	py
✅	2034	Stock Price Fluctuation	🟠	py
✅	2035	Partition Array Into Two Arrays to Minimize Sum Difference	🔴	py
	🔒 2036	Maximum Alternating Subarray Sum	🟠
✅	2037	Minimum Number of Moves to Seat Everyone	🟢	py
✅	2038	Remove Colored Pieces if Both Neighbors are the Same Color	🟠	py
✅	2039	The Time When the Network Becomes Idle	🟠	py
✅	2040	Kth Smallest Product of Two Sorted Arrays	🔴	py
	🔒 2041	Accepted Candidates From the Interviews	🟠
✅	2042	Check if Numbers Are Ascending in a Sentence	🟢	py
✅	2043	Simple Bank System	🟠	py
✅	2044	Count Number of Maximum Bitwise-OR Subsets	🟠	py
	2045	Second Minimum Time to Reach Destination	🔴
	🔒 2046	Sort Linked List Already Sorted Using Absolute Values	🟠
✅	2047	Number of Valid Words in a Sentence	🟢	py
✅	2048	Next Greater Numerically Balanced Number	🟠	py
✅	2049	Count Nodes With the Highest Score	🟠	py
✅	2050	Parallel Courses III	🔴	py
	🔒 2051	The Category of Each Member in the Store	🟠
	🔒 2052	Minimum Cost to Separate Sentence Into Rows	🟠
✅	2053	Kth Distinct String in an Array	🟢	py
✅	2054	Two Best Non-Overlapping Events	🟠	py
✅	2055	Plates Between Candles	🟠	py
	2056	Number of Valid Move Combinations On Chessboard	🔴
✅	2057	Smallest Index With Equal Value	🟢	py
✅	2058	Find the Minimum and Maximum Number of Nodes Between Critical Points	🟠	py
✅	2059	Minimum Operations to Convert Number	🟠	py
	2060	Check if an Original String Exists Given Two Encoded Strings	🔴
	🔒 2061	Number of Spaces Cleaning Robot Cleaned	🟠
✅	2062	Count Vowel Substrings of a String	🟢	py
✅	2063	Vowels of All Substrings	🟠	py
✅	2064	Minimized Maximum of Products Distributed to Any Store	🟠	py
✅	2065	Maximum Path Quality of a Graph	🔴	py
	🔒 2066	Account Balance	🟠
	🔒 2067	Number of Equal Count Substrings	🟠
✅	2068	Check Whether Two Strings are Almost Equivalent	🟢	py
✅	2069	Walking Robot Simulation II	🟠	py
✅	2070	Most Beautiful Item for Each Query	🟠	py
	2071	Maximum Number of Tasks You Can Assign	🔴
	🔒 2072	The Winner University	🟢
✅	2073	Time Needed to Buy Tickets	🟢	py
✅	2074	Reverse Nodes in Even Length Groups	🟠	py
✅	2075	Decode the Slanted Ciphertext	🟠	py
✅	2076	Process Restricted Friend Requests	🔴	py
	🔒 2077	Paths in Maze That Lead to Same Room	🟠
✅	2078	Two Furthest Houses With Different Colors	🟢	py
✅	2079	Watering Plants	🟠	py
✅	2080	Range Frequency Queries	🟠	py
✅	2081	Sum of k-Mirror Numbers	🔴	py
	🔒 2082	The Number of Rich Customers	🟢
	🔒 2083	Substrings That Begin and End With the Same Letter	🟠
	🔒 2084	Drop Type 1 Orders for Customers With Type 0 Orders	🟠
✅	2085	Count Common Words With One Occurrence	🟢	py
	2086	Minimum Number of Food Buckets to Feed the Hamsters	🟠
✅	2087	Minimum Cost Homecoming of a Robot in a Grid	🟠	py
✅	2088	Count Fertile Pyramids in a Land	🔴	py
✅	2089	Find Target Indices After Sorting Array	🟢	py
✅	2090	K Radius Subarray Averages	🟠	py
✅	2091	Removing Minimum and Maximum From Array	🟠	py
✅	2092	Find All People With Secret	🔴	py
	🔒 2093	Minimum Cost to Reach City With Discounts	🟠
✅	2094	Finding 3-Digit Even Numbers	🟢	py
✅	2095	Delete the Middle Node of a Linked List	🟠	py
✅	2096	Step-By-Step Directions From a Binary Tree Node to Another	🟠	py
✅	2097	Valid Arrangement of Pairs	🔴	py
	🔒 2098	Subsequence of Size K With the Largest Even Sum	🟠
✅	2099	Find Subsequence of Length K With the Largest Sum	🟢	py
✅	2100	Find Good Days to Rob the Bank	🟠	py
✅	2101	Detonate the Maximum Bombs	🟠	py
✅	2102	Sequentially Ordinal Rank Tracker	🔴	py
✅	2103	Rings and Rods	🟢	py
✅	2104	Sum of Subarray Ranges	🟠	py
✅	2105	Watering Plants II	🟠	py
✅	2106	Maximum Fruits Harvested After at Most K Steps	🔴	py
	🔒 2107	Number of Unique Flavors After Sharing K Candies	🟠
✅	2108	Find First Palindromic String in the Array	🟢	py
✅	2109	Adding Spaces to a String	🟠	py
✅	2110	Number of Smooth Descent Periods of a Stock	🟠	py
✅	2111	Minimum Operations to Make the Array K-Increasing	🔴	py
	🔒 2112	The Airport With the Most Traffic	🟠
	🔒 2113	Elements in Array After Removing and Replacing Elements	🟠
✅	2114	Maximum Number of Words Found in Sentences	🟢	py
✅	2115	Find All Possible Recipes from Given Supplies	🟠	py
✅	2116	Check if a Parentheses String Can Be Valid	🟠	py
✅	2117	Abbreviating the Product of a Range	🔴	py
	🔒 2118	Build the Equation	🔴
✅	2119	A Number After a Double Reversal	🟢	py
✅	2120	Execution of All Suffix Instructions Staying in a Grid	🟠	py
✅	2121	Intervals Between Identical Elements	🟠	py
✅	2122	Recover the Original Array	🔴	py
	🔒 2123	Minimum Operations to Remove Adjacent Ones in Matrix	🔴
✅	2124	Check if All A's Appears Before All B's	🟢	py
✅	2125	Number of Laser Beams in a Bank	🟠	py
✅	2126	Destroying Asteroids	🟠	py
✅	2127	Maximum Employees to Be Invited to a Meeting	🔴	py
	🔒 2128	Remove All Ones With Row and Column Flips	🟠
✅	2129	Capitalize the Title	🟢	py
✅	2130	Maximum Twin Sum of a Linked List	🟠	py
✅	2131	Longest Palindrome by Concatenating Two Letter Words	🟠	py
✅	2132	Stamping the Grid	🔴	py
✅	2133	Check if Every Row and Column Contains All Numbers	🟢	py
✅	2134	Minimum Swaps to Group All 1's Together II	🟠	py
✅	2135	Count Words Obtained After Adding a Letter	🟠	py
✅	2136	Earliest Possible Day of Full Bloom	🔴	py
	🔒 2137	Pour Water Between Buckets to Make Water Levels Equal	🟠
✅	2138	Divide a String Into Groups of Size k	🟢	py
✅	2139	Minimum Moves to Reach Target Score	🟠	py
✅	2140	Solving Questions With Brainpower	🟠	py
✅	2141	Maximum Running Time of N Computers	🔴	py
	🔒 2142	The Number of Passengers in Each Bus I	🟠
	🔒 2143	Choose Numbers From Two Arrays in Range	🔴
✅	2144	Minimum Cost of Buying Candies With Discount	🟢	py
✅	2145	Count the Hidden Sequences	🟠	py
✅	2146	K Highest Ranked Items Within a Price Range	🟠	py
✅	2147	Number of Ways to Divide a Long Corridor	🔴	py
✅	2148	Count Elements With Strictly Smaller and Greater Elements	🟢	py
✅	2149	Rearrange Array Elements by Sign	🟠	py
✅	2150	Find All Lonely Numbers in the Array	🟠	py
✅	2151	Maximum Good People Based on Statements	🔴	py
	🔒 2152	Minimum Number of Lines to Cover Points	🟠
	🔒 2153	The Number of Passengers in Each Bus II	🔴
✅	2154	Keep Multiplying Found Values by Two	🟢	py
✅	2155	All Divisions With the Highest Score of a Binary Array	🟠	py
✅	2156	Find Substring With Given Hash Value	🔴	py
✅	2157	Groups of Strings	🔴	py
	🔒 2158	Amount of New Area Painted Each Day	🔴
	🔒 2159	Order Two Columns Independently	🟠
✅	2160	Minimum Sum of Four Digit Number After Splitting Digits	🟢	py
✅	2161	Partition Array According to Given Pivot	🟠	py
✅	2162	Minimum Cost to Set Cooking Time	🟠	py
✅	2163	Minimum Difference in Sums After Removal of Elements	🔴	py
✅	2164	Sort Even and Odd Indices Independently	🟢	py
✅	2165	Smallest Value of the Rearranged Number	🟠	py
✅	2166	Design Bitset	🟠	py
✅	2167	Minimum Time to Remove All Cars Containing Illegal Goods	🔴	py
	🔒 2168	Unique Substrings With Equal Digit Frequency	🟠
✅	2169	Count Operations to Obtain Zero	🟢	py
✅	2170	Minimum Operations to Make the Array Alternating	🟠	py
✅	2171	Removing Minimum Number of Magic Beans	🟠	py
✅	2172	Maximum AND Sum of Array	🔴	py
	🔒 2173	Longest Winning Streak	🔴
	🔒 2174	Remove All Ones With Row and Column Flips II	🟠
	🔒 2175	The Change in Global Rankings	🟠
✅	2176	Count Equal and Divisible Pairs in an Array	🟢	py
✅	2177	Find Three Consecutive Integers That Sum to a Given Number	🟠	py
✅	2178	Maximum Split of Positive Even Integers	🟠	py
✅	2179	Count Good Triplets in an Array	🔴	py
✅	2180	Count Integers With Even Digit Sum	🟢	py
✅	2181	Merge Nodes in Between Zeros	🟠	py
✅	2182	Construct String With Repeat Limit	🟠	py
✅	2183	Count Array Pairs Divisible by K	🔴	py
	🔒 2184	Number of Ways to Build Sturdy Brick Wall	🟠
✅	2185	Counting Words With a Given Prefix	🟢	py
✅	2186	Minimum Number of Steps to Make Two Strings Anagram II	🟠	py
✅	2187	Minimum Time to Complete Trips	🟠	py
✅	2188	Minimum Time to Finish the Race	🔴	py
	🔒 2189	Number of Ways to Build House of Cards	🟠
✅	2190	Most Frequent Number Following Key In an Array	🟢	py
✅	2191	Sort the Jumbled Numbers	🟠	py
✅	2192	All Ancestors of a Node in a Directed Acyclic Graph	🟠	py
✅	2193	Minimum Number of Moves to Make Palindrome	🔴	py cpp
✅	2194	Cells in a Range on an Excel Sheet	🟢	py
✅	2195	Append K Integers With Minimal Sum	🟠	py
✅	2196	Create Binary Tree From Descriptions	🟠	py
✅	2197	Replace Non-Coprime Numbers in Array	🔴	py
	🔒 2198	Number of Single Divisor Triplets	🟠
	🔒 2199	Finding the Topic of Each Post	🔴
✅	2200	Find All K-Distant Indices in an Array	🟢	py
✅	2201	Count Artifacts That Can Be Extracted	🟠	py
✅	2202	Maximize the Topmost Element After K Moves	🟠	py
✅	2203	Minimum Weighted Subgraph With the Required Paths	🔴	py
	🔒 2204	Distance to a Cycle in Undirected Graph	🔴
	🔒 2205	The Number of Users That Are Eligible for Discount	🟢
✅	2206	Divide Array Into Equal Pairs	🟢	py
✅	2207	Maximize Number of Subsequences in a String	🟠	py
✅	2208	Minimum Operations to Halve Array Sum	🟠	py
✅	2209	Minimum White Tiles After Covering With Carpets	🔴	py
✅	2210	Count Hills and Valleys in an Array	🟢	py
✅	2211	Count Collisions on a Road	🟠	py
✅	2212	Maximum Points in an Archery Competition	🟠	py
✅	2213	Longest Substring of One Repeating Character	🔴	py
	🔒 2214	Minimum Health to Beat Game	🟠
✅	2215	Find the Difference of Two Arrays	🟢	py
✅	2216	Minimum Deletions to Make Array Beautiful	🟠	py
✅	2217	Find Palindrome With Fixed Length	🟠	py
✅	2218	Maximum Value of K Coins From Piles	🔴	py
	🔒 2219	Maximum Sum Score of Array	🟠
✅	2220	Minimum Bit Flips to Convert Number	🟢	py
✅	2221	Find Triangular Sum of an Array	🟠	py
✅	2222	Number of Ways to Select Buildings	🟠	py
	2223	Sum of Scores of Built Strings	🔴
✅	2224	Minimum Number of Operations to Convert Time	🟢	py
✅	2225	Find Players With Zero or One Losses	🟠	py
✅	2226	Maximum Candies Allocated to K Children	🟠	py
✅	2227	Encrypt and Decrypt Strings	🔴	py
	🔒 2228	Users With Two Purchases Within Seven Days	🟠
	🔒 2229	Check if an Array Is Consecutive	🟢
	🔒 2230	The Users That Are Eligible for Discount	🟢
✅	2231	Largest Number After Digit Swaps by Parity	🟢	py
✅	2232	Minimize Result by Adding Parentheses to Expression	🟠	py
✅	2233	Maximum Product After K Increments	🟠	py
✅	2234	Maximum Total Beauty of the Gardens	🔴	py
	2235	Add Two Integers	🟢
✅	2236	Root Equals Sum of Children	🟢	py
	🔒 2237	Count Positions on Street With Required Brightness	🟠
	🔒 2238	Number of Times a Driver Was a Passenger	🟠
✅	2239	Find Closest Number to Zero	🟢	py
✅	2240	Number of Ways to Buy Pens and Pencils	🟠	py
✅	2241	Design an ATM Machine	🟠	py
✅	2242	Maximum Score of a Node Sequence	🔴	py
✅	2243	Calculate Digit Sum of a String	🟢	py
✅	2244	Minimum Rounds to Complete All Tasks	🟠	py
✅	2245	Maximum Trailing Zeros in a Cornered Path	🟠	py
✅	2246	Longest Path With Different Adjacent Characters	🔴	py
	🔒 2247	Maximum Cost of Trip With K Highways	🔴
✅	2248	Intersection of Multiple Arrays	🟢	py
✅	2249	Count Lattice Points Inside a Circle	🟠	py
✅	2250	Count Number of Rectangles Containing Each Point	🟠	py
✅	2251	Number of Flowers in Full Bloom	🔴	py
	🔒 2252	Dynamic Pivoting of a Table	🔴
	🔒 2253	Dynamic Unpivoting of a Table	🔴
	🔒 2254	Design Video Sharing Platform	🔴
✅	2255	Count Prefixes of a Given String	🟢	py
✅	2256	Minimum Average Difference	🟠	py
✅	2257	Count Unguarded Cells in the Grid	🟠	py
✅	2258	Escape the Spreading Fire	🔴	py
✅	2259	Remove Digit From Number to Maximize Result	🟢	py
✅	2260	Minimum Consecutive Cards to Pick Up	🟠	py
✅	2261	K Divisible Elements Subarrays	🟠	py
✅	2262	Total Appeal of A String	🔴	py
	🔒 2263	Make Array Non-decreasing or Non-increasing	🔴
✅	2264	Largest 3-Same-Digit Number in String	🟢	py
✅	2265	Count Nodes Equal to Average of Subtree	🟠	py
✅	2266	Count Number of Texts	🟠	py
✅	2267	Check if There Is a Valid Parentheses String Path	🔴	py
	🔒 2268	Minimum Number of Keypresses	🟠
✅	2269	Find the K-Beauty of a Number	🟢	py
✅	2270	Number of Ways to Split Array	🟠	py
✅	2271	Maximum White Tiles Covered by a Carpet	🟠	py
✅	2272	Substring With Largest Variance	🔴	py
✅	2273	Find Resultant Array After Removing Anagrams	🟢	py
✅	2274	Maximum Consecutive Floors Without Special Floors	🟠	py
✅	2275	Largest Combination With Bitwise AND Greater Than Zero	🟠	py
✅	2276	Count Integers in Intervals	🔴	py
	🔒 2277	Closest Node to Path in Tree	🔴
✅	2278	Percentage of Letter in String	🟢	py
✅	2279	Maximum Bags With Full Capacity of Rocks	🟠	py
✅	2280	Minimum Lines to Represent a Line Chart	🟠	py
✅	2281	Sum of Total Strength of Wizards	🔴	py
	🔒 2282	Number of People That Can Be Seen in a Grid	🟠
✅	2283	Check if Number Has Equal Digit Count and Digit Value	🟢	py
✅	2284	Sender With Largest Word Count	🟠	py
✅	2285	Maximum Total Importance of Roads	🟠	py
✅	2286	Booking Concert Tickets in Groups	🔴	py
✅	2287	Rearrange Characters to Make Target String	🟢	py
✅	2288	Apply Discount to Prices	🟠	py
✅	2289	Steps to Make Array Non-decreasing	🟠	py
✅	2290	Minimum Obstacle Removal to Reach Corner	🔴	py
	🔒 2291	Maximum Profit From Trading Stocks	🟠
	🔒 2292	Products With Three or More Orders in Two Consecutive Years	🟠
✅	2293	Min Max Game	🟢	py
✅	2294	Partition Array Such That Maximum Difference Is K	🟠	py
✅	2295	Replace Elements in an Array	🟠	py
✅	2296	Design a Text Editor	🔴	py
	🔒 2297	Jump Game VIII	🟠
	🔒 2298	Tasks Count in the Weekend	🟠
✅	2299	Strong Password Checker II	🟢	py
✅	2300	Successful Pairs of Spells and Potions	🟠	py
✅	2301	Match Substring After Replacement	🔴	py
✅	2302	Count Subarrays With Score Less Than K	🔴	py
✅	2303	Calculate Amount Paid in Taxes	🟢	py
✅	2304	Minimum Path Cost in a Grid	🟠	py
✅	2305	Fair Distribution of Cookies	🟠	py
✅	2306	Naming a Company	🔴	py
	🔒 2307	Check for Contradictions in Equations	🔴
	🔒 2308	Arrange Table by Gender	🟠
✅	2309	Greatest English Letter in Upper and Lower Case	🟢	py
✅	2310	Sum of Numbers With Units Digit K	🟠	py
✅	2311	Longest Binary Subsequence Less Than or Equal to K	🟠	py
✅	2312	Selling Pieces of Wood	🔴	py
	🔒 2313	Minimum Flips in Binary Tree to Get Result	🔴
	🔒 2314	The First Day of the Maximum Recorded Degree in Each City	🟠
✅	2315	Count Asterisks	🟢	py
✅	2316	Count Unreachable Pairs of Nodes in an Undirected Graph	🟠	py
✅	2317	Maximum XOR After Operations	🟠	py
✅	2318	Number of Distinct Roll Sequences	🔴	py
✅	2319	Check if Matrix Is X-Matrix	🟢	py
✅	2320	Count Number of Ways to Place Houses	🟠	py
✅	2321	Maximum Score Of Spliced Array	🔴	py cpp
✅	2322	Minimum Score After Removals on a Tree	🔴	py
	🔒 2323	Find Minimum Time to Finish All Jobs II	🟠
	🔒 2324	Product Sales Analysis IV	🟠
✅	2325	Decode the Message	🟢	py
✅	2326	Spiral Matrix IV	🟠	py
✅	2327	Number of People Aware of a Secret	🟠	py
✅	2328	Number of Increasing Paths in a Grid	🔴	py
	🔒 2329	Product Sales Analysis V	🟢
	🔒 2330	Valid Palindrome IV	🟠
✅	2331	Evaluate Boolean Binary Tree	🟢	py
✅	2332	The Latest Time to Catch a Bus	🟠	py
✅	2333	Minimum Sum of Squared Difference	🟠	py
✅	2334	Subarray With Elements Greater Than Varying Threshold	🔴	py
✅	2335	Minimum Amount of Time to Fill Cups	🟢	py
✅	2336	Smallest Number in Infinite Set	🟠	py
✅	2337	Move Pieces to Obtain a String	🟠	py
	2338	Count the Number of Ideal Arrays	🔴
	🔒 2339	All the Matches of the League	🟢
	🔒 2340	Minimum Adjacent Swaps to Make a Valid Array	🟠
✅	2341	Maximum Number of Pairs in Array	🟢	py
✅	2342	Max Sum of a Pair With Equal Sum of Digits	🟠	py
✅	2343	Query Kth Smallest Trimmed Number	🟠	py
✅	2344	Minimum Deletions to Make Array Divisible	🔴	py
	🔒 2345	Finding the Number of Visible Mountains	🟠
	🔒 2346	Compute the Rank as a Percentage	🟠
✅	2347	Best Poker Hand	🟢	py
✅	2348	Number of Zero-Filled Subarrays	🟠	py
✅	2349	Design a Number Container System	🟠	py
✅	2350	Shortest Impossible Sequence of Rolls	🔴	py
✅	2351	First Letter to Appear Twice	🟢	py
✅	2352	Equal Row and Column Pairs	🟠	py
✅	2353	Design a Food Rating System	🟠	py
✅	2354	Number of Excellent Pairs	🔴	py
	🔒 2355	Maximum Number of Books You Can Take	🔴
	🔒 2356	Number of Unique Subjects Taught by Each Teacher	🟢
✅	2357	Make Array Zero by Subtracting Equal Amounts	🟢	py
✅	2358	Maximum Number of Groups Entering a Competition	🟠	py
✅	2359	Find Closest Node to Given Two Nodes	🟠	py
✅	2360	Longest Cycle in a Graph	🔴	py
	🔒 2361	Minimum Costs Using the Train Line	🔴
	🔒 2362	Generate the Invoice	🔴
✅	2363	Merge Similar Items	🟢	py
✅	2364	Count Number of Bad Pairs	🟠	py
✅	2365	Task Scheduler II	🟠	py
✅	2366	Minimum Replacements to Sort the Array	🔴	py
✅	2367	Number of Arithmetic Triplets	🟢	py
✅	2368	Reachable Nodes With Restrictions	🟠	py
✅	2369	Check if There is a Valid Partition For The Array	🟠	py
✅	2370	Longest Ideal Subsequence	🟠	py
	🔒 2371	Minimize Maximum Value in a Grid	🔴
	🔒 2372	Calculate the Influence of Each Salesperson	🟠
✅	2373	Largest Local Values in a Matrix	🟢	py
✅	2374	Node With Highest Edge Score	🟠	py
✅	2375	Construct Smallest Number From DI String	🟠	py
✅	2376	Count Special Integers	🔴	py
	🔒 2377	Sort the Olympic Table	🟢
	🔒 2378	Choose Edges to Maximize Score in a Tree	🟠
✅	2379	Minimum Recolors to Get K Consecutive Black Blocks	🟢	py
✅	2380	Time Needed to Rearrange a Binary String	🟠	py
✅	2381	Shifting Letters II	🟠	py
✅	2382	Maximum Segment Sum After Removals	🔴	py
✅	2383	Minimum Hours of Training to Win a Competition	🟢	py
✅	2384	Largest Palindromic Number	🟠	py
✅	2385	Amount of Time for Binary Tree to Be Infected	🟠	py
✅	2386	Find the K-Sum of an Array	🔴	py
	🔒 2387	Median of a Row Wise Sorted Matrix	🟠
	🔒 2388	Change Null Values in a Table to the Previous Value	🟠
✅	2389	Longest Subsequence With Limited Sum	🟢	py
✅	2390	Removing Stars From a String	🟠	py
✅	2391	Minimum Amount of Time to Collect Garbage	🟠	py
✅	2392	Build a Matrix With Conditions	🔴	py
	🔒 2393	Count Strictly Increasing Subarrays	🟠
	🔒 2394	Employees With Deductions	🟠
✅	2395	Find Subarrays With Equal Sum	🟢	py
✅	2396	Strictly Palindromic Number	🟠	py
✅	2397	Maximum Rows Covered by Columns	🟠	py
✅	2398	Maximum Number of Robots Within Budget	🔴	py
✅	2399	Check Distances Between Same Letters	🟢	py
✅	2400	Number of Ways to Reach a Position After Exactly k Steps	🟠	py
✅	2401	Longest Nice Subarray	🟠	py
✅	2402	Meeting Rooms III	🔴	py
	🔒 2403	Minimum Time to Kill All Monsters	🔴
✅	2404	Most Frequent Even Element	🟢	py
✅	2405	Optimal Partition of String	🟠	py
✅	2406	Divide Intervals Into Minimum Number of Groups	🟠	py
✅	2407	Longest Increasing Subsequence II	🔴	py
	🔒 2408	Design SQL	🟠
✅	2409	Count Days Spent Together	🟢	py
✅	2410	Maximum Matching of Players With Trainers	🟠	py
✅	2411	Smallest Subarrays With Maximum Bitwise OR	🟠	py
✅	2412	Minimum Money Required Before Transactions	🔴	py
✅	2413	Smallest Even Multiple	🟢	py
✅	2414	Length of the Longest Alphabetical Continuous Substring	🟠	py
✅	2415	Reverse Odd Levels of Binary Tree	🟠	py
✅	2416	Sum of Prefix Scores of Strings	🔴	py
	🔒 2417	Closest Fair Integer	🟠
✅	2418	Sort the People	🟢	py
✅	2419	Longest Subarray With Maximum Bitwise AND	🟠	py
✅	2420	Find All Good Indices	🟠	py
✅	2421	Number of Good Paths	🔴	py
	🔒 2422	Merge Operations to Turn Array Into a Palindrome	🟠
✅	2423	Remove Letter To Equalize Frequency	🟢	py
✅	2424	Longest Uploaded Prefix	🟠	py
✅	2425	Bitwise XOR of All Pairings	🟠	py
✅	2426	Number of Pairs Satisfying Inequality	🔴	py
✅	2427	Number of Common Factors	🟢	py
✅	2428	Maximum Sum of an Hourglass	🟠	py
✅	2429	Minimize XOR	🟠	py
✅	2430	Maximum Deletions on a String	🔴	py
	🔒 2431	Maximize Total Tastiness of Purchased Fruits	🟠
✅	2432	The Employee That Worked on the Longest Task	🟢	py
✅	2433	Find The Original Array of Prefix Xor	🟠	py
✅	2434	Using a Robot to Print the Lexicographically Smallest String	🟠	py
✅	2435	Paths in Matrix Whose Sum Is Divisible by K	🔴	py cpp
	🔒 2436	Minimum Split Into Subarrays With GCD Greater Than One	🟠
✅	2437	Number of Valid Clock Times	🟢	py
✅	2438	Range Product Queries of Powers	🟠	py
✅	2439	Minimize Maximum of Array	🟠	py
✅	2440	Create Components With Same Value	🔴	py
✅	2441	Largest Positive Integer That Exists With Its Negative	🟢	py
✅	2442	Count Number of Distinct Integers After Reverse Operations	🟠	py
✅	2443	Sum of Number and Its Reverse	🟠	py
✅	2444	Count Subarrays With Fixed Bounds	🔴	py
	🔒 2445	Number of Nodes With Value One	🟠
✅	2446	Determine if Two Events Have Conflict	🟢	py
✅	2447	Number of Subarrays With GCD Equal to K	🟠	py
✅	2448	Minimum Cost to Make Array Equal	🔴	py
✅	2449	Minimum Number of Operations to Make Arrays Similar	🔴	py
	🔒 2450	Number of Distinct Binary Strings After Applying Operations	🟠
✅	2451	Odd String Difference	🟢	py
✅	2452	Words Within Two Edits of Dictionary	🟠	py
✅	2453	Destroy Sequential Targets	🟠	py
✅	2454	Next Greater Element IV	🔴	py
✅	2455	Average Value of Even Numbers That Are Divisible by Three	🟢	py
✅	2456	Most Popular Video Creator	🟠	py
✅	2457	Minimum Addition to Make Integer Beautiful	🟠	py
✅	2458	Height of Binary Tree After Subtree Removal Queries	🔴	py
	🔒 2459	Sort Array by Moving Items to Empty Space	🔴
✅	2460	Apply Operations to an Array	🟢	py
✅	2461	Maximum Sum of Distinct Subarrays With Length K	🟠	py
✅	2462	Total Cost to Hire K Workers	🟠	py
✅	2463	Minimum Total Distance Traveled	🔴	py
	🔒 2464	Minimum Subarrays in a Valid Split	🟠
✅	2465	Number of Distinct Averages	🟢	py
✅	2466	Count Ways To Build Good Strings	🟠	py
✅	2467	Most Profitable Path in a Tree	🟠	py
✅	2468	Split Message Based on Limit	🔴	py
✅	2469	Convert the Temperature	🟢	py
✅	2470	Number of Subarrays With LCM Equal to K	🟠	py
✅	2471	Minimum Number of Operations to Sort a Binary Tree by Level	🟠	py
✅	2472	Maximum Number of Non-overlapping Palindrome Substrings	🔴	py
	🔒 2473	Minimum Cost to Buy Apples	🟠
	🔒 2474	Customers With Strictly Increasing Purchases	🔴
✅	2475	Number of Unequal Triplets in Array	🟢	py
✅	2476	Closest Nodes Queries in a Binary Search Tree	🟠	py
✅	2477	Minimum Fuel Cost to Report to the Capital	🟠	py
✅	2478	Number of Beautiful Partitions	🔴	py cpp
	🔒 2479	Maximum XOR of Two Non-Overlapping Subtrees	🔴
	🔒 2480	Form a Chemical Bond	🟢
✅	2481	Minimum Cuts to Divide a Circle	🟢	py
✅	2482	Difference Between Ones and Zeros in Row and Column	🟠	py
✅	2483	Minimum Penalty for a Shop	🟠	py
✅	2484	Count Palindromic Subsequences	🔴	py
✅	2485	Find the Pivot Integer	🟢	py
✅	2486	Append Characters to String to Make Subsequence	🟠	py
✅	2487	Remove Nodes From Linked List	🟠	py
✅	2488	Count Subarrays With Median K	🔴	py
	🔒 2489	Number of Substrings With Fixed Ratio	🟠
✅	2490	Circular Sentence	🟢	py
✅	2491	Divide Players Into Teams of Equal Skill	🟠	py
✅	2492	Minimum Score of a Path Between Two Cities	🟠	py
✅	2493	Divide Nodes Into the Maximum Number of Groups	🔴	py
	🔒 2494	Merge Overlapping Events in the Same Hall	🔴
	🔒 2495	Number of Subarrays Having Even Product	🟠
✅	2496	Maximum Value of a String in an Array	🟢	py
✅	2497	Maximum Star Sum of a Graph	🟠	py
✅	2498	Frog Jump II	🟠	py
✅	2499	Minimum Total Cost to Make Arrays Unequal	🔴	py
✅	2500	Delete Greatest Value in Each Row	🟢	py
✅	2501	Longest Square Streak in an Array	🟠	py
✅	2502	Design Memory Allocator	🟠	py
✅	2503	Maximum Number of Points From Grid Queries	🔴	py
	🔒 2504	Concatenate the Name and the Profession	🟢
	🔒 2505	Bitwise OR of All Subsequence Sums	🟠
✅	2506	Count Pairs Of Similar Strings	🟢	py
✅	2507	Smallest Value After Replacing With Sum of Prime Factors	🟠	py
✅	2508	Add Edges to Make Degrees of All Nodes Even	🔴	py
✅	2509	Cycle Length Queries in a Tree	🔴	py
	🔒 2510	Check if There is a Path With Equal Number of 0's And 1's	🟠
✅	2511	Maximum Enemy Forts That Can Be Captured	🟢	py
✅	2512	Reward Top K Students	🟠