leetcode-problems-by-popularity.md

Leetcode Problems Sorted By Popularity

Leetcode does not allow sorting problems by upvotes/downvotes. That is probably to encourage users to attempt newer problems. However, for someone with limited preparation time, going through the most popular questions first might be helpful. Hence, here is a list of Leetcode questions sorted by popularity. The data are accurate as of 13th July 2021. [Raw Markdown]

Rank	Problem	Difficulty	Upvotes	Downvotes
1	1. Two Sum	Easy	22445	760
2	3. Longest Substring Without Repeating Characters	Medium	15724	778
3	53. Maximum Subarray	Easy	13025	620
4	2. Add Two Numbers	Medium	12715	2909
5	42. Trapping Rain Water	Hard	12461	178
6	5. Longest Palindromic Substring	Medium	11908	739
7	15. 3Sum	Medium	11652	1152
8	4. Median of Two Sorted Arrays	Hard	11147	1600
9	11. Container With Most Water	Medium	10462	745
10	121. Best Time to Buy and Sell Stock	Easy	9459	392
11	200. Number of Islands	Medium	9202	255
12	146. LRU Cache	Medium	9131	361
13	22. Generate Parentheses	Medium	8752	360
14	33. Search in Rotated Sorted Array	Medium	8620	704
15	287. Find the Duplicate Number	Medium	8291	873
16	56. Merge Intervals	Medium	8250	399
17	20. Valid Parentheses	Easy	8127	333
18	560. Subarray Sum Equals K	Medium	8115	273
19	300. Longest Increasing Subsequence	Medium	8090	174
20	238. Product of Array Except Self	Medium	8058	583
21	23. Merge k Sorted Lists	Hard	7845	368
22	206. Reverse Linked List	Easy	7649	143
23	198. House Robber	Medium	7598	201
24	322. Coin Change	Medium	7548	207
25	21. Merge Two Sorted Lists	Easy	7458	815
26	152. Maximum Product Subarray	Medium	7438	240
27	70. Climbing Stairs	Easy	7235	223
28	139. Word Break	Medium	7221	340
29	76. Minimum Window Substring	Hard	7180	467
30	55. Jump Game	Medium	6961	443
31	46. Permutations	Medium	6719	139
32	136. Single Number	Easy	6687	215
33	101. Symmetric Tree	Easy	6675	175
34	17. Letter Combinations of a Phone Number	Medium	6642	548
35	98. Validate Binary Search Tree	Medium	6641	727
36	39. Combination Sum	Medium	6625	166
37	236. Lowest Common Ancestor of a Binary Tree	Medium	6524	219
38	84. Largest Rectangle in Histogram	Hard	6475	112
39	239. Sliding Window Maximum	Hard	6469	245
40	207. Course Schedule	Medium	6410	269
41	78. Subsets	Medium	6364	118
42	41. First Missing Positive	Hard	6308	1063
43	124. Binary Tree Maximum Path Sum	Hard	6304	421
44	34. Find First and Last Position of Element in Sorted Array	Medium	6289	215
45	31. Next Permutation	Medium	6259	2079
46	79. Word Search	Medium	6210	252
47	215. Kth Largest Element in an Array	Medium	6196	382
48	160. Intersection of Two Linked Lists	Easy	6142	685
49	10. Regular Expression Matching	Hard	6141	877
50	72. Edit Distance	Hard	6077	72
51	128. Longest Consecutive Sequence	Medium	6074	279
52	19. Remove Nth Node From End of List	Medium	6000	331
53	283. Move Zeroes	Easy	5992	178
54	75. Sort Colors	Medium	5974	328
55	49. Group Anagrams	Medium	5954	242
56	105. Construct Binary Tree from Preorder and Inorder Traversal	Medium	5934	145
57	234. Palindrome Linked List	Easy	5807	454
58	226. Invert Binary Tree	Easy	5673	81
59	169. Majority Element	Easy	5667	271
60	62. Unique Paths	Medium	5660	251
61	48. Rotate Image	Medium	5611	365
62	138. Copy List with Random Pointer	Medium	5602	845
63	32. Longest Valid Parentheses	Hard	5591	194
64	437. Path Sum III	Medium	5523	326
65	347. Top K Frequent Elements	Medium	5468	286
66	155. Min Stack	Easy	5456	495
67	394. Decode String	Medium	5438	250
68	127. Word Ladder	Hard	5413	1454
69	102. Binary Tree Level Order Traversal	Medium	5231	113
70	543. Diameter of Binary Tree	Easy	5182	318
71	240. Search a 2D Matrix II	Medium	5161	96
72	621. Task Scheduler	Medium	5156	965
73	64. Minimum Path Sum	Medium	5145	86
74	94. Binary Tree Inorder Traversal	Easy	5144	223
75	7. Reverse Integer	Easy	5121	7734
76	189. Rotate Array	Medium	5025	961
77	96. Unique Binary Search Trees	Medium	4980	183
78	763. Partition Labels	Medium	4965	203
79	221. Maximal Square	Medium	4958	115
80	141. Linked List Cycle	Easy	4954	641
81	45. Jump Game II	Medium	4944	202
82	208. Implement Trie (Prefix Tree)	Medium	4865	72
83	114. Flatten Binary Tree to Linked List	Medium	4854	425
84	416. Partition Equal Subset Sum	Medium	4837	94
85	91. Decode Ways	Medium	4801	3516
86	295. Find Median from Data Stream	Hard	4795	85
87	279. Perfect Squares	Medium	4745	247
88	617. Merge Two Binary Trees	Easy	4696	203
89	122. Best Time to Buy and Sell Stock II	Easy	4695	2099
90	14. Longest Common Prefix	Easy	4695	2340
91	739. Daily Temperatures	Medium	4668	135
92	85. Maximal Rectangle	Hard	4654	92
93	647. Palindromic Substrings	Medium	4649	141
94	297. Serialize and Deserialize Binary Tree	Hard	4648	208
95	148. Sort List	Medium	4633	183
96	494. Target Sum	Medium	4603	182
97	142. Linked List Cycle II	Medium	4595	330
98	438. Find All Anagrams in a String	Medium	4509	207
99	448. Find All Numbers Disappeared in an Array	Easy	4481	312
100	338. Counting Bits	Easy	4389	225
101	337. House Robber III	Medium	4386	71
102	199. Binary Tree Right Side View	Medium	4357	233
103	104. Maximum Depth of Binary Tree	Easy	4324	102
104	108. Convert Sorted Array to Binary Search Tree	Easy	4298	293
105	26. Remove Duplicates from Sorted Array	Easy	4291	7480
106	54. Spiral Matrix	Medium	4289	688
107	92. Reverse Linked List II	Medium	4280	219
108	230. Kth Smallest Element in a BST	Medium	4275	92
109	378. Kth Smallest Element in a Sorted Matrix	Medium	4274	202
110	406. Queue Reconstruction by Height	Medium	4218	465
111	210. Course Schedule II	Medium	4214	178
112	25. Reverse Nodes in k-Group	Hard	4172	415
113	209. Minimum Size Subarray Sum	Medium	4158	147
114	315. Count of Smaller Numbers After Self	Hard	4137	123
115	581. Shortest Unsorted Continuous Subarray	Medium	4125	188
116	863. All Nodes Distance K in Binary Tree	Medium	4041	80
117	24. Swap Nodes in Pairs	Medium	4041	223
118	212. Word Search II	Hard	4031	150
119	123. Best Time to Buy and Sell Stock III	Hard	3945	93
120	35. Search Insert Position	Easy	3913	307
121	309. Best Time to Buy and Sell Stock with Cooldown	Medium	3901	128
122	173. Binary Search Tree Iterator	Medium	3899	327
123	442. Find All Duplicates in an Array	Medium	3876	188
124	312. Burst Balloons	Hard	3870	116
125	110. Balanced Binary Tree	Easy	3870	243
126	131. Palindrome Partitioning	Medium	3869	122
127	153. Find Minimum in Rotated Sorted Array	Medium	3868	312
128	73. Set Matrix Zeroes	Medium	3857	388
129	103. Binary Tree Zigzag Level Order Traversal	Medium	3818	132
130	380. Insert Delete GetRandom O(1)	Medium	3812	221
131	116. Populating Next Right Pointers in Each Node	Medium	3785	174
132	695. Max Area of Island	Medium	3779	114
133	74. Search a 2D Matrix	Medium	3771	209
134	572. Subtree of Another Tree	Easy	3736	182
135	18. 4Sum	Medium	3736	448
136	994. Rotting Oranges	Medium	3726	221
137	746. Min Cost Climbing Stairs	Easy	3725	766
138	399. Evaluate Division	Medium	3681	288
139	16. 3Sum Closest	Medium	3653	183
140	329. Longest Increasing Path in a Matrix	Hard	3640	61
141	51. N-Queens	Hard	3606	116
142	301. Remove Invalid Parentheses	Hard	3599	170
143	402. Remove K Digits	Medium	3590	155
144	9. Palindrome Number	Easy	3581	1789
145	100. Same Tree	Easy	3578	94
146	516. Longest Palindromic Subsequence	Medium	3492	222
147	143. Reorder List	Medium	3488	155
148	112. Path Sum	Easy	3486	644
149	1143. Longest Common Subsequence	Medium	3483	41
150	235. Lowest Common Ancestor of a Binary Search Tree	Easy	3477	142
151	328. Odd Even Linked List	Medium	3470	346
152	204. Count Primes	Easy	3469	835
153	202. Happy Number	Easy	3454	550
154	140. Word Break II	Hard	3448	447
155	109. Convert Sorted List to Binary Search Tree	Medium	3444	102
156	518. Coin Change 2	Medium	3413	80
157	133. Clone Graph	Medium	3397	1801
158	134. Gas Station	Medium	3384	453
159	973. K Closest Points to Origin	Medium	3379	167
160	179. Largest Number	Medium	3373	331
161	310. Minimum Height Trees	Medium	3368	139
162	547. Number of Provinces	Medium	3342	193
163	268. Missing Number	Easy	3340	2591
164	120. Triangle	Medium	3339	332
165	787. Cheapest Flights Within K Stops	Medium	3324	124
166	95. Unique Binary Search Trees II	Medium	3310	220
167	47. Permutations II	Medium	3303	81
168	44. Wildcard Matching	Hard	3299	155
169	450. Delete Node in a BST	Medium	3289	116
170	698. Partition to K Equal Sum Subsets	Medium	3281	202
171	162. Find Peak Element	Medium	3271	2812
172	692. Top K Frequent Words	Medium	3270	212
173	57. Insert Interval	Medium	3215	264
174	211. Design Add and Search Words Data Structure	Medium	3205	134
175	767. Reorganize String	Medium	3205	150
176	82. Remove Duplicates from Sorted List II	Medium	3204	129
177	387. First Unique Character in a String	Easy	3202	154
178	222. Count Complete Tree Nodes	Medium	3186	265
179	63. Unique Paths II	Medium	3186	305
180	665. Non-decreasing Array	Medium	3165	646
181	983. Minimum Cost For Tickets	Medium	3148	61
182	37. Sudoku Solver	Hard	3147	114
183	40. Combination Sum II	Medium	3140	94
184	213. House Robber II	Medium	3135	68
185	113. Path Sum II	Medium	3076	88
186	130. Surrounded Regions	Medium	3070	832
187	218. The Skyline Problem	Hard	3058	170
188	67. Add Binary	Easy	3045	370
189	525. Contiguous Array	Medium	3028	148
190	229. Majority Element II	Medium	3027	230
191	118. Pascal's Triangle	Easy	3008	142
192	669. Trim a Binary Search Tree	Medium	2984	212
193	203. Remove Linked List Elements	Easy	2966	129
194	463. Island Perimeter	Easy	2959	151
195	167. Two Sum II - Input array is sorted	Easy	2948	756
196	332. Reconstruct Itinerary	Medium	2947	1343
197	106. Construct Binary Tree from Inorder and Postorder Traversal	Medium	2946	57
198	410. Split Array Largest Sum	Hard	2930	97
199	289. Game of Life	Medium	2913	357
200	237. Delete Node in a Linked List	Easy	2906	9573
201	785. Is Graph Bipartite?	Medium	2898	239
202	242. Valid Anagram	Easy	2886	169
203	658. Find K Closest Elements	Medium	2882	347
204	395. Longest Substring with At Least K Repeating Characters	Medium	2866	281
205	90. Subsets II	Medium	2865	114
206	680. Valid Palindrome II	Easy	2862	182
207	137. Single Number II	Medium	2841	415
208	36. Valid Sudoku	Medium	2840	581
209	83. Remove Duplicates from Sorted List	Easy	2835	154
210	503. Next Greater Element II	Medium	2833	97
211	771. Jewels and Stones	Easy	2831	434
212	264. Ugly Number II	Medium	2830	169
213	316. Remove Duplicate Letters	Medium	2830	204
214	743. Network Delay Time	Medium	2821	253
215	145. Binary Tree Postorder Traversal	Easy	2816	119
216	257. Binary Tree Paths	Easy	2800	143
217	540. Single Element in a Sorted Array	Medium	2798	88
218	97. Interleaving String	Medium	2794	142
219	392. Is Subsequence	Easy	2782	249
220	99. Recover Binary Search Tree	Medium	2776	105
221	714. Best Time to Buy and Sell Stock with Transaction Fee	Medium	2767	77
222	538. Convert BST to Greater Tree	Medium	2765	146
223	43. Multiply Strings	Medium	2755	1096
224	654. Maximum Binary Tree	Medium	2744	276
225	1004. Max Consecutive Ones III	Medium	2743	41
226	424. Longest Repeating Character Replacement	Medium	2732	127
227	876. Middle of the Linked List	Easy	2725	79
228	61. Rotate List	Medium	2721	1174
229	977. Squares of a Sorted Array	Easy	2706	117
230	111. Minimum Depth of Binary Tree	Easy	2697	843
231	718. Maximum Length of Repeated Subarray	Medium	2695	65
232	979. Distribute Coins in Binary Tree	Medium	2694	86
233	188. Best Time to Buy and Sell Stock IV	Hard	2687	144
234	50. Pow(x, n)	Medium	2679	4018
235	334. Increasing Triplet Subsequence	Medium	2677	171
236	721. Accounts Merge	Medium	2676	471
237	844. Backspace String Compare	Easy	2674	120
238	567. Permutation in String	Medium	2673	82
239	126. Word Ladder II	Hard	2672	304
240	1192. Critical Connections in a Network	Hard	2665	127
241	344. Reverse String	Easy	2646	799
242	938. Range Sum of BST	Easy	2640	301
243	117. Populating Next Right Pointers in Each Node II	Medium	2638	203
244	28. Implement strStr()	Easy	2619	2534
245	684. Redundant Connection	Medium	2616	265
246	542. 01 Matrix	Medium	2612	137
247	451. Sort Characters By Frequency	Medium	2611	155
248	174. Dungeon Game	Hard	2584	54
249	459. Repeated Substring Pattern	Easy	2584	258
250	66. Plus One	Easy	2583	3403
251	227. Basic Calculator II	Medium	2576	391
252	6. ZigZag Conversion	Medium	2575	6206
253	445. Add Two Numbers II	Medium	2566	203
254	713. Subarray Product Less Than K	Medium	2554	97
255	129. Sum Root to Leaf Numbers	Medium	2546	64
256	678. Valid Parenthesis String	Medium	2527	69
257	77. Combinations	Medium	2512	89
258	144. Binary Tree Preorder Traversal	Easy	2510	93
259	260. Single Number III	Medium	2507	140
260	86. Partition List	Medium	2505	427
261	60. Permutation Sequence	Hard	2502	373
262	986. Interval List Intersections	Medium	2492	66
263	430. Flatten a Multilevel Doubly Linked List	Medium	2485	196
264	350. Intersection of Two Arrays II	Easy	2478	540
265	456. 132 Pattern	Medium	2474	150
266	341. Flatten Nested List Iterator	Medium	2467	891
267	377. Combination Sum IV	Medium	2466	274
268	673. Number of Longest Increasing Subsequence	Medium	2463	128
269	687. Longest Univalue Path	Medium	2450	568
270	662. Maximum Width of Binary Tree	Medium	2436	423
271	278. First Bad Version	Easy	2434	890
272	224. Basic Calculator	Hard	2423	218
273	856. Score of Parentheses	Medium	2421	74
274	1011. Capacity To Ship Packages Within D Days	Medium	2420	62
275	205. Isomorphic Strings	Easy	2420	512
276	1249. Minimum Remove to Make Valid Parentheses	Medium	2400	50
277	417. Pacific Atlantic Water Flow	Medium	2387	609
278	241. Different Ways to Add Parentheses	Medium	2377	125
279	81. Search in Rotated Sorted Array II	Medium	2362	601
280	1130. Minimum Cost Tree From Leaf Values	Medium	2354	173
281	27. Remove Element	Easy	2340	3765
282	107. Binary Tree Level Order Traversal II	Medium	2330	256
283	435. Non-overlapping Intervals	Medium	2320	69
284	461. Hamming Distance	Easy	2318	179
285	797. All Paths From Source to Target	Medium	2284	99
286	354. Russian Doll Envelopes	Hard	2273	62
287	421. Maximum XOR of Two Numbers in an Array	Medium	2258	224
288	653. Two Sum IV - Input is a BST	Easy	2256	161
289	652. Find Duplicate Subtrees	Medium	2239	252
290	784. Letter Case Permutation	Medium	2235	127
291	69. Sqrt(x)	Easy	2232	2482
292	1277. Count Square Submatrices with All Ones	Medium	2231	38
293	460. LFU Cache	Hard	2226	159
294	907. Sum of Subarray Minimums	Medium	2217	136
295	733. Flood Fill	Easy	2201	263
296	125. Valid Palindrome	Easy	2201	4043
297	1048. Longest String Chain	Medium	2194	116
298	336. Palindrome Pairs	Hard	2180	199
299	115. Distinct Subsequences	Hard	2178	82
300	637. Average of Levels in Binary Tree	Easy	2167	210
301	307. Range Sum Query - Mutable	Medium	2163	120
302	454. 4Sum II	Medium	2160	85
303	373. Find K Pairs with Smallest Sums	Medium	2157	142
304	1008. Construct Binary Search Tree from Preorder Traversal	Medium	2139	50
305	735. Asteroid Collision	Medium	2133	179
306	486. Predict the Winner	Medium	2118	115
307	752. Open the Lock	Medium	2088	71
308	449. Serialize and Deserialize BST	Medium	2086	99
309	841. Keys and Rooms	Medium	2067	140
310	474. Ones and Zeroes	Medium	2060	298
311	132. Palindrome Partitioning II	Hard	2055	59
312	80. Remove Duplicates from Sorted Array II	Medium	2039	820
313	404. Sum of Left Leaves	Easy	2036	189
314	290. Word Pattern	Easy	2034	236
315	216. Combination Sum III	Medium	2015	67
316	368. Largest Divisible Subset	Medium	2014	95
317	1110. Delete Nodes And Return Forest	Medium	1992	59
318	407. Trapping Rain Water II	Hard	1990	43
319	792. Number of Matching Subsequences	Medium	1989	114
320	895. Maximum Frequency Stack	Hard	1987	37
321	135. Candy	Hard	1978	218
322	415. Add Strings	Easy	1977	408
323	1047. Remove All Adjacent Duplicates In String	Easy	1975	114
324	1029. Two City Scheduling	Medium	1970	205
325	862. Shortest Subarray with Sum at Least K	Hard	1969	45
326	724. Find Pivot Index	Easy	1963	326
327	29. Divide Two Integers	Medium	1963	7328
328	992. Subarrays with K Different Integers	Hard	1958	29
329	12. Integer to Roman	Medium	1956	3318
330	650. 2 Keys Keyboard	Medium	1952	138
331	217. Contains Duplicate	Easy	1939	860
332	583. Delete Operation for Two Strings	Medium	1938	38
333	232. Implement Queue using Stacks	Easy	1932	173
334	190. Reverse Bits	Easy	1932	615
335	413. Arithmetic Slices	Medium	1929	208
336	1365. How Many Numbers Are Smaller Than the Current Number	Easy	1926	45
337	452. Minimum Number of Arrows to Burst Balloons	Medium	1920	66
338	150. Evaluate Reverse Polish Notation	Medium	1920	550
339	93. Restore IP Addresses	Medium	1915	579
340	968. Binary Tree Cameras	Hard	1912	29
341	953. Verifying an Alien Dictionary	Easy	1909	751
342	376. Wiggle Subsequence	Medium	1907	81
343	1423. Maximum Points You Can Obtain from Cards	Medium	1898	84
344	905. Sort Array By Parity	Easy	1895	99
345	946. Validate Stack Sequences	Medium	1892	36
346	304. Range Sum Query 2D - Immutable	Medium	1866	222
347	974. Subarray Sums Divisible by K	Medium	1837	122
348	168. Excel Sheet Column Title	Easy	1835	321
349	171. Excel Sheet Column Number	Easy	1827	212
350	371. Sum of Two Integers	Medium	1824	2896
351	343. Integer Break	Medium	1819	277
352	151. Reverse Words in a String	Medium	1814	3344
353	59. Spiral Matrix II	Medium	1813	134
354	696. Count Binary Substrings	Easy	1798	302
355	628. Maximum Product of Three Numbers	Easy	1794	462
356	214. Shortest Palindrome	Hard	1780	156
357	918. Maximum Sum Circular Subarray	Medium	1774	78
358	997. Find the Town Judge	Easy	1773	138
359	1209. Remove All Adjacent Duplicates in String II	Medium	1766	36
360	282. Expression Add Operators	Hard	1761	294
361	1038. Binary Search Tree to Greater Sum Tree	Medium	1752	117
362	740. Delete and Earn	Medium	1750	133
363	741. Cherry Pickup	Hard	1749	100
364	875. Koko Eating Bananas	Medium	1746	101
365	987. Vertical Order Traversal of a Binary Tree	Hard	1743	2616
366	403. Frog Jump	Hard	1736	137
367	409. Longest Palindrome	Easy	1724	108
368	154. Find Minimum in Rotated Sorted Array II	Hard	1718	284
369	871. Minimum Number of Refueling Stops	Hard	1717	35
370	701. Insert into a Binary Search Tree	Medium	1716	103
371	821. Shortest Distance to a Character	Easy	1711	111
372	659. Split Array into Consecutive Subsequences	Medium	1706	500
373	220. Contains Duplicate III	Medium	1703	1768
374	706. Design HashMap	Easy	1695	187
375	947. Most Stones Removed with Same Row or Column	Medium	1670	478
376	191. Number of 1 Bits	Easy	1662	656
377	493. Reverse Pairs	Hard	1656	155
378	901. Online Stock Span	Medium	1650	180
379	801. Minimum Swaps To Make Sequences Increasing	Hard	1649	119
380	1002. Find Common Characters	Easy	1649	152
381	894. All Possible Full Binary Trees	Medium	1646	139
382	1480. Running Sum of 1d Array	Easy	1643	147
383	670. Maximum Swap	Medium	1641	97
384	980. Unique Paths III	Hard	1633	96
385	887. Super Egg Drop	Hard	1631	103
386	1302. Deepest Leaves Sum	Medium	1629	62
387	349. Intersection of Two Arrays	Easy	1616	1626
388	700. Search in a Binary Search Tree	Easy	1611	135
389	605. Can Place Flowers	Easy	1598	497
390	363. Max Sum of Rectangle No Larger Than K	Hard	1596	99
391	886. Possible Bipartition	Medium	1592	39
392	897. Increasing Order Search Tree	Easy	1591	545
393	480. Sliding Window Median	Hard	1575	104
394	814. Binary Tree Pruning	Medium	1574	58
395	509. Fibonacci Number	Easy	1574	231
396	646. Maximum Length of Pair Chain	Medium	1571	91
397	273. Integer to English Words	Hard	1571	3891
398	704. Binary Search	Easy	1561	68
399	557. Reverse Words in a String III	Easy	1553	109
400	1235. Maximum Profit in Job Scheduling	Hard	1551	16
401	632. Smallest Range Covering Elements from K Lists	Hard	1544	28
402	934. Shortest Bridge	Medium	1542	95
403	554. Brick Wall	Medium	1534	76
404	1019. Next Greater Node In Linked List	Medium	1534	79
405	324. Wiggle Sort II	Medium	1534	695
406	164. Maximum Gap	Hard	1533	245
407	1010. Pairs of Songs With Total Durations Divisible by 60	Medium	1525	88
408	611. Valid Triangle Number	Medium	1525	112
409	231. Power of Two	Easy	1525	227
410	119. Pascal's Triangle II	Easy	1523	229
411	1046. Last Stone Weight	Easy	1500	39
412	513. Find Bottom Left Tree Value	Medium	1499	179
413	559. Maximum Depth of N-ary Tree	Easy	1498	62
414	501. Find Mode in Binary Search Tree	Easy	1495	448
415	219. Contains Duplicate II	Easy	1494	1483
416	485. Max Consecutive Ones	Easy	1492	388
417	719. Find K-th Smallest Pair Distance	Hard	1486	52
418	630. Course Schedule III	Hard	1483	48
419	959. Regions Cut By Slashes	Medium	1481	292
420	766. Toeplitz Matrix	Easy	1472	97
421	201. Bitwise AND of Numbers Range	Medium	1472	150
422	712. Minimum ASCII Delete Sum for Two Strings	Medium	1470	58
423	412. Fizz Buzz	Easy	1459	1652
424	865. Smallest Subtree with all the Deepest Nodes	Medium	1456	305
425	697. Degree of an Array	Easy	1455	1011
426	832. Flipping an Image	Easy	1453	186
427	729. My Calendar I	Medium	1452	50
428	834. Sum of Distances in Tree	Hard	1449	48
429	515. Find Largest Value in Each Tree Row	Medium	1449	73
430	1043. Partition Array for Maximum Sum	Medium	1448	163
431	1027. Longest Arithmetic Subsequence	Medium	1447	81
432	1041. Robot Bounded In Circle	Medium	1447	394
433	172. Factorial Trailing Zeroes	Easy	1445	1458
434	355. Design Twitter	Medium	1443	243
435	1438. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit	Medium	1436	70
436	464. Can I Win	Medium	1436	230
437	1306. Jump Game III	Medium	1434	40
438	688. Knight Probability in Chessboard	Medium	1433	249
439	526. Beautiful Arrangement	Medium	1427	226
440	1155. Number of Dice Rolls With Target Sum	Medium	1420	65
441	1512. Number of Good Pairs	Easy	1420	113
442	849. Maximize Distance to Closest Person	Medium	1420	135
443	1049. Last Stone Weight II	Medium	1416	53
444	443. String Compression	Medium	1416	3454
445	950. Reveal Cards In Increasing Order	Medium	1415	228
446	881. Boats to Save People	Medium	1403	51
447	303. Range Sum Query - Immutable	Easy	1403	1427
448	389. Find the Difference	Easy	1397	324
449	498. Diagonal Traverse	Medium	1396	429
450	1290. Convert Binary Number in a Linked List to Integer	Easy	1392	73
451	530. Minimum Absolute Difference in BST	Easy	1392	100
452	367. Valid Perfect Square	Easy	1388	196
453	921. Minimum Add to Make Parentheses Valid	Medium	1380	89
454	890. Find and Replace Pattern	Medium	1380	105
455	889. Construct Binary Tree from Preorder and Postorder Traversal	Medium	1379	66
456	1026. Maximum Difference Between Node and Ancestor	Medium	1374	42
457	1470. Shuffle the Array	Easy	1373	142
458	703. Kth Largest Element in a Stream	Easy	1373	869
459	657. Robot Return to Origin	Easy	1372	699
460	981. Time Based Key-Value Store	Medium	1371	158
461	318. Maximum Product of Word Lengths	Medium	1370	88
462	1094. Car Pooling	Medium	1369	42
463	1022. Sum of Root To Leaf Binary Numbers	Easy	1369	98
464	30. Substring with Concatenation of All Words	Hard	1367	1543
465	1091. Shortest Path in Binary Matrix	Medium	1366	83
466	931. Minimum Falling Path Sum	Medium	1361	85
467	528. Random Pick with Weight	Medium	1355	2959
468	1007. Minimum Domino Rotations For Equal Row	Medium	1328	196
469	556. Next Greater Element III	Medium	1326	276
470	1268. Search Suggestions System	Medium	1324	101
471	689. Maximum Sum of 3 Non-Overlapping Subarrays	Hard	1322	86
472	175. Combine Two Tables	Easy	1320	164
473	472. Concatenated Words	Hard	1315	160
474	802. Find Eventual Safe States	Medium	1307	249
475	187. Repeated DNA Sequences	Medium	1304	343
476	813. Largest Sum of Averages	Medium	1298	64
477	857. Minimum Cost to Hire K Workers	Hard	1297	154
478	778. Swim in Rising Water	Hard	1290	99
479	872. Leaf-Similar Trees	Easy	1288	51
480	845. Longest Mountain in Array	Medium	1285	49
481	258. Add Digits	Easy	1276	1344
482	674. Longest Continuous Increasing Subsequence	Easy	1268	149
483	877. Stone Game	Medium	1266	1473
484	942. DI String Match	Easy	1260	499
485	1092. Shortest Common Supersequence	Hard	1257	31
486	1351. Count Negative Numbers in a Sorted Matrix	Easy	1252	58
487	476. Number Complement	Easy	1251	88
488	852. Peak Index in a Mountain Array	Easy	1251	1422
489	176. Second Highest Salary	Easy	1250	595
490	1035. Uncrossed Lines	Medium	1244	24
491	929. Unique Email Addresses	Easy	1243	225
492	532. K-diff Pairs in an Array	Medium	1243	1618
493	594. Longest Harmonious Subsequence	Easy	1240	129
494	1074. Number of Submatrices That Sum to Target	Hard	1239	33
495	795. Number of Subarrays with Bounded Maximum	Medium	1237	79
496	566. Reshape the Matrix	Easy	1236	135
497	807. Max Increase to Keep City Skyline	Medium	1236	356
498	815. Bus Routes	Hard	1235	38
499	166. Fraction to Recurring Decimal	Medium	1235	2401
500	1221. Split a String in Balanced Strings	Easy	1233	649
501	645. Set Mismatch	Easy	1232	461
502	1219. Path with Maximum Gold	Medium	1229	41
503	58. Length of Last Word	Easy	1227	3362
504	381. Insert Delete GetRandom O(1) - Duplicates allowed	Hard	1222	96
505	796. Rotate String	Easy	1219	72
506	1122. Relative Sort Array	Easy	1219	82
507	473. Matchsticks to Square	Medium	1216	104
508	477. Total Hamming Distance	Medium	1210	68
509	1395. Count Number of Teams	Medium	1208	132
510	225. Implement Stack using Queues	Easy	1207	704
511	685. Redundant Connection II	Hard	1197	252
512	1539. Kth Missing Positive Number	Easy	1192	75
513	765. Couples Holding Hands	Hard	1191	73
514	937. Reorder Data in Log Files	Easy	1189	3075
515	1079. Letter Tile Possibilities	Medium	1185	41
516	589. N-ary Tree Preorder Traversal	Easy	1184	68
517	576. Out of Boundary Paths	Medium	1182	173
518	769. Max Chunks To Make Sorted	Medium	1177	148
519	783. Minimum Distance Between BST Nodes	Easy	1177	270
520	68. Text Justification	Hard	1172	2156
521	622. Design Circular Queue	Medium	1171	145
522	327. Count of Range Sum	Hard	1169	129
523	1315. Sum of Nodes with Even-Valued Grandparent	Medium	1166	41
524	147. Insertion Sort List	Medium	1163	701
525	690. Employee Importance	Easy	1163	976
526	636. Exclusive Time of Functions	Medium	1154	1887
527	922. Sort Array By Parity II	Easy	1151	59
528	414. Third Maximum Number	Easy	1146	1886
529	345. Reverse Vowels of a String	Easy	1142	1555
530	791. Custom Sort String	Medium	1141	227
531	951. Flip Equivalent Binary Trees	Medium	1138	58
532	1031. Maximum Sum of Two Non-Overlapping Subarrays	Medium	1135	55
533	925. Long Pressed Name	Easy	1133	198
534	565. Array Nesting	Medium	1132	120
535	1314. Matrix Block Sum	Medium	1127	192
536	1329. Sort the Matrix Diagonally	Medium	1125	156
537	590. N-ary Tree Postorder Traversal	Easy	1122	75
538	375. Guess Number Higher or Lower II	Medium	1116	1550
539	873. Length of Longest Fibonacci Subsequence	Medium	1111	43
540	13. Roman to Integer	Easy	1107	91
541	1319. Number of Operations to Make Network Connected	Medium	1105	18
542	836. Rectangle Overlap	Easy	1104	339
543	89. Gray Code	Medium	1104	2023
544	228. Summary Ranges	Easy	1102	753
545	686. Repeated String Match	Medium	1100	855
546	725. Split Linked List in Parts	Medium	1096	159
547	643. Maximum Average Subarray I	Easy	1093	141
548	859. Buddy Strings	Easy	1090	747
549	896. Monotonic Array	Easy	1089	46
550	429. N-ary Tree Level Order Traversal	Medium	1089	67
551	1089. Duplicate Zeros	Easy	1088	368
552	941. Valid Mountain Array	Easy	1085	102
553	524. Longest Word in Dictionary through Deleting	Medium	1082	303
554	1305. All Elements in Two Binary Search Trees	Medium	1080	42
555	648. Replace Words	Medium	1074	146
556	491. Increasing Subsequences	Medium	1066	142
557	52. N-Queens II	Hard	1065	193
558	773. Sliding Puzzle	Hard	1064	32
559	870. Advantage Shuffle	Medium	1056	68
560	1000. Minimum Cost to Merge Stones	Hard	1055	65
561	939. Minimum Area Rectangle	Medium	1055	186
562	441. Arranging Coins	Easy	1054	816
563	1448. Count Good Nodes in Binary Tree	Medium	1051	43
564	957. Prison Cells After N Days	Medium	1048	1350
565	331. Verify Preorder Serialization of a Binary Tree	Medium	1046	61
566	1239. Maximum Length of a Concatenated String with Unique Characters	Medium	1044	97
567	419. Battleships in a Board	Medium	1041	643
568	1504. Count Submatrices With All Ones	Medium	1039	78
569	1081. Smallest Subsequence of Distinct Characters	Medium	1039	119
570	606. Construct String from Binary Tree	Easy	1036	1411
571	846. Hand of Straights	Medium	1034	101
572	912. Sort an Array	Medium	1033	409
573	975. Odd Even Jump	Hard	1027	305
574	1353. Maximum Number of Events That Can Be Attended	Medium	1024	143
575	321. Create Maximum Number	Hard	1023	281
576	299. Bulls and Cows	Medium	1023	1108
577	1342. Number of Steps to Reduce a Number to Zero	Easy	1020	90
578	819. Most Common Word	Easy	1015	2186
579	779. K-th Symbol in Grammar	Medium	1013	212
580	1248. Count Number of Nice Subarrays	Medium	1012	27
581	1162. As Far from Land as Possible	Medium	1004	40
582	1482. Minimum Number of Days to Make m Bouquets	Medium	998	25
583	1254. Number of Closed Islands	Medium	998	27
584	1171. Remove Zero Sum Consecutive Nodes from Linked List	Medium	990	60
585	508. Most Frequent Subtree Sum	Medium	990	161
586	720. Longest Word in Dictionary	Medium	990	1145
587	623. Add One Row to Tree	Medium	987	166
588	1337. The K Weakest Rows in a Matrix	Easy	985	70
589	178. Rank Scores	Medium	983	176
590	475. Heaters	Medium	983	955
591	880. Decoded String at Index	Medium	980	168
592	529. Minesweeper	Medium	978	697
593	804. Unique Morse Code Words	Easy	978	881
594	313. Super Ugly Number	Medium	975	177
595	563. Binary Tree Tilt	Easy	974	1628
596	462. Minimum Moves to Equal Array Elements II	Medium	972	63
597	1383. Maximum Performance of a Team	Hard	967	37
598	1105. Filling Bookcase Shelves	Medium	965	58
599	679. 24 Game	Hard	962	190
600	383. Ransom Note	Easy	962	249
601	342. Power of Four	Easy	961	261
602	1146. Snapshot Array	Medium	955	173
603	382. Linked List Random Node	Medium	955	243
604	1202. Smallest String With Swaps	Medium	952	34
605	274. H-Index	Medium	952	1552
606	535. Encode and Decode TinyURL	Medium	951	1922
607	935. Knight Dialer	Medium	950	307
608	453. Minimum Moves to Equal Array Elements	Easy	949	1296
609	847. Shortest Path Visiting All Nodes	Hard	947	91
610	1431. Kids With the Greatest Number of Candies	Easy	942	206
611	728. Self Dividing Numbers	Easy	942	329
612	1161. Maximum Level Sum of a Binary Tree	Medium	941	44
613	87. Scramble String	Hard	941	847
614	1376. Time Needed to Inform All Employees	Medium	940	79
615	838. Push Dominoes	Medium	939	81
616	707. Design Linked List	Medium	938	944
617	455. Assign Cookies	Easy	937	130
618	546. Remove Boxes	Hard	934	63
619	1312. Minimum Insertion Steps to Make a String Palindrome	Hard	929	15
620	1367. Linked List in Binary Tree	Medium	929	36
621	990. Satisfiability of Equality Equations	Medium	928	9
622	991. Broken Calculator	Medium	928	134
623	1044. Longest Duplicate Substring	Hard	925	266
624	930. Binary Subarrays With Sum	Medium	922	35
625	914. X of a Kind in a Deck of Cards	Easy	917	232
626	917. Reverse Only Letters	Easy	916	45
627	1025. Divisor Game	Easy	916	2367
628	1140. Stone Game II	Medium	914	205
629	860. Lemonade Change	Easy	912	103
630	965. Univalued Binary Tree	Easy	910	52
631	1186. Maximum Subarray Sum with One Deletion	Medium	909	34
632	1021. Remove Outermost Parentheses	Easy	906	932
633	181. Employees Earning More Than Their Managers	Easy	898	119
634	1266. Minimum Time Visiting All Points	Easy	897	137
635	1382. Balance a Binary Search Tree	Medium	896	36
636	671. Second Minimum Node In a Binary Tree	Easy	896	1165
637	827. Making A Large Island	Hard	895	25
638	730. Count Different Palindromic Subsequences	Hard	890	53
639	1325. Delete Leaves With a Given Value	Medium	883	18
640	731. My Calendar II	Medium	883	107
641	1071. Greatest Common Divisor of Strings	Easy	882	203
642	843. Guess the Word	Hard	878	925
643	1293. Shortest Path in a Grid with Obstacles Elimination	Hard	877	14
644	775. Global and Local Inversions	Medium	877	270
645	520. Detect Capital	Easy	877	299
646	263. Ugly Number	Easy	862	848
647	1032. Stream of Characters	Hard	861	123
648	599. Minimum Index Sum of Two Lists	Easy	861	256
649	1299. Replace Elements with Greatest Element on Right Side	Easy	860	151
650	165. Compare Version Numbers	Medium	859	1743
651	1190. Reverse Substrings Between Each Pair of Parentheses	Medium	858	28
652	1463. Cherry Pickup II	Hard	855	11
653	1283. Find the Smallest Divisor Given a Threshold	Medium	855	136
654	799. Champagne Tower	Medium	848	62
655	969. Pancake Sorting	Medium	847	1070
656	467. Unique Substrings in Wraparound String	Medium	846	113
657	1477. Find Two Non-overlapping Sub-arrays Each With Target Sum	Medium	840	48
658	1052. Grumpy Bookstore Owner	Medium	840	77
659	1338. Reduce Array Size to The Half	Medium	836	67
660	962. Maximum Width Ramp	Medium	834	25
661	432. All O`one Data Structure	Hard	833	104
662	926. Flip String to Monotone Increasing	Medium	832	26
663	1262. Greatest Sum Divisible by Three	Medium	832	26
664	1396. Design Underground System	Medium	832	61
665	888. Fair Candy Swap	Easy	829	172
666	386. Lexicographical Numbers	Medium	828	99
667	284. Peeking Iterator	Medium	828	576
668	292. Nim Game	Easy	826	1938
669	1024. Video Stitching	Medium	822	39
670	853. Car Fleet	Medium	815	308
671	1296. Divide Array in Sets of K Consecutive Numbers	Medium	810	73
672	1358. Number of Substrings Containing All Three Characters	Medium	808	18
673	1466. Reorder Routes to Make All Paths Lead to the City Zero	Medium	808	25
674	639. Decode Ways II	Hard	805	689
675	943. Find the Shortest Superstring	Hard	797	112
676	436. Find Right Interval	Medium	797	204
677	638. Shopping Offers	Medium	796	549
678	1129. Shortest Path with Alternating Colors	Medium	793	42
679	780. Reaching Points	Hard	793	132
680	705. Design HashSet	Easy	790	115
681	185. Department Top Three Salaries	Hard	790	167
682	1335. Minimum Difficulty of a Job Schedule	Hard	789	93
683	745. Prefix and Suffix Search	Hard	789	293
684	552. Student Attendance Record II	Hard	788	140
685	682. Baseball Game	Easy	787	1258
686	1108. Defanging an IP Address	Easy	786	1272
687	1013. Partition Array Into Three Parts With Equal Sum	Easy	784	93
688	676. Implement Magic Dictionary	Medium	784	167
689	1114. Print in Order	Easy	783	139
690	1123. Lowest Common Ancestor of Deepest Leaves	Medium	782	658
691	401. Binary Watch	Easy	782	1407
692	709. To Lower Case	Easy	781	2048
693	575. Distribute Candies	Easy	778	1049
694	916. Word Subsets	Medium	777	113
695	668. Kth Smallest Number in Multiplication Table	Hard	776	25
696	1207. Unique Number of Occurrences	Easy	775	27
697	1326. Minimum Number of Taps to Open to Water a Garden	Hard	774	71
698	388. Longest Absolute File Path	Medium	773	1788
699	898. Bitwise ORs of Subarrays	Medium	772	154
700	1371. Find the Longest Substring Containing Vowels in Even Counts	Medium	770	30
701	837. New 21 Game	Medium	769	468
702	855. Exam Room	Medium	768	315
703	1530. Number of Good Leaf Nodes Pairs	Medium	767	15
704	861. Score After Flipping Matrix	Medium	763	154
705	910. Smallest Range II	Medium	762	295
706	811. Subdomain Visit Count	Easy	762	935
707	446. Arithmetic Slices II - Subsequence	Hard	761	72
708	754. Reach a Number	Medium	758	560
709	1457. Pseudo-Palindromic Paths in a Binary Tree	Medium	757	25
710	1109. Corporate Flight Bookings	Medium	749	128
711	1295. Find Numbers with Even Number of Digits	Easy	748	84
712	744. Find Smallest Letter Greater Than Target	Easy	748	828
713	633. Sum of Square Numbers	Medium	745	396
714	923. 3Sum With Multiplicity	Medium	739	128
715	1557. Minimum Number of Vertices to Reach All Nodes	Medium	738	48
716	1145. Binary Tree Coloring Game	Medium	738	151
717	1220. Count Vowels Permutation	Hard	733	82
718	867. Transpose Matrix	Easy	733	342
719	1345. Jump Game IV	Hard	731	47
720	1028. Recover a Tree From Preorder Traversal	Hard	730	26
721	470. Implement Rand10() Using Rand7()	Medium	729	244
722	1039. Minimum Score Triangulation of Polygon	Medium	728	95
723	945. Minimum Increment to Make Array Unique	Medium	724	31
724	1347. Minimum Number of Steps to Make Two Strings Anagram	Medium	724	46
725	715. Range Module	Hard	724	55
726	539. Minimum Time Difference	Medium	722	176
727	967. Numbers With Same Consecutive Differences	Medium	721	127
728	1104. Path In Zigzag Labelled Binary Tree	Medium	719	209
729	988. Smallest String Starting From Leaf	Medium	718	131
730	1528. Shuffle String	Easy	718	189
731	978. Longest Turbulent Subarray	Medium	717	135
732	184. Department Highest Salary	Medium	717	145
733	675. Cut Off Trees for Golf Event	Hard	717	426
734	1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts	Medium	716	180
735	182. Duplicate Emails	Easy	714	39
736	823. Binary Trees With Factors	Medium	710	94
737	818. Race Car	Hard	702	75
738	677. Map Sum Pairs	Medium	701	96
739	726. Number of Atoms	Hard	700	181
740	961. N-Repeated Element in Size 2N Array	Easy	700	267
741	398. Random Pick Index	Medium	700	876
742	1288. Remove Covered Intervals	Medium	697	27
743	609. Find Duplicate File in System	Medium	696	835
744	177. Nth Highest Salary	Medium	695	513
745	1124. Longest Well-Performing Interval	Medium	694	77
746	1160. Find Words That Can Be Formed by Characters	Easy	694	102
747	693. Binary Number with Alternating Bits	Easy	691	95
748	500. Keyboard Row	Easy	691	783
749	1498. Number of Subsequences That Satisfy the Given Sum Condition	Medium	687	67
750	374. Guess Number Higher or Lower	Easy	687	2170
751	1200. Minimum Absolute Difference	Easy	686	35
752	842. Split Array into Fibonacci Sequence	Medium	686	216
753	1514. Path with Maximum Probability	Medium	685	17
754	989. Add to Array-Form of Integer	Easy	685	104
755	828. Count Unique Characters of All Substrings of a Given String	Hard	682	69
756	319. Bulb Switcher	Medium	682	1310
757	1014. Best Sightseeing Pair	Medium	679	27
758	1137. N-th Tribonacci Number	Easy	679	60
759	1372. Longest ZigZag Path in a Binary Tree	Medium	676	14
760	629. K Inverse Pairs Array	Hard	675	103
761	405. Convert a Number to Hexadecimal	Easy	675	139
762	1381. Design a Stack With Increment Operation	Medium	673	57
763	330. Patching Array	Hard	672	86
764	1323. Maximum 69 Number	Easy	672	96
765	768. Max Chunks To Make Sorted II	Hard	671	25
766	1436. Destination City	Easy	671	48
767	829. Consecutive Numbers Sum	Hard	669	836
768	884. Uncommon Words from Two Sentences	Easy	668	110
769	1406. Stone Game III	Hard	665	11
770	1334. Find the City With the Smallest Number of Neighbors at a Threshold Distance	Medium	665	37
771	738. Monotone Increasing Digits	Medium	665	78
772	1488. Avoid Flood in The City	Medium	661	144
773	180. Consecutive Numbers	Medium	661	149
774	1443. Minimum Time to Collect All Apples in a Tree	Medium	660	68
775	1267. Count Servers that Communicate	Medium	659	63
776	1552. Magnetic Force Between Two Balls	Medium	657	63
777	1304. Find N Unique Integers Sum up to Zero	Easy	656	353
778	357. Count Numbers with Unique Digits	Medium	656	1069
779	1574. Shortest Subarray to be Removed to Make Array Sorted	Medium	650	19
780	541. Reverse String II	Easy	650	1787
781	1282. Group the People Given the Group Size They Belong To	Medium	646	394
782	1005. Maximize Sum Of Array After K Negations	Easy	645	61
783	627. Swap Salary	Easy	644	319
784	1442. Count Triplets That Can Form Two Arrays of Equal XOR	Medium	642	35
785	764. Largest Plus Sign	Medium	639	129
786	854. K-Similar Strings	Hard	638	45
787	1286. Iterator for Combination	Medium	636	48
788	1339. Maximum Product of Splitted Binary Tree	Medium	636	48
789	1054. Distant Barcodes	Medium	634	29
790	1405. Longest Happy String	Medium	633	114
791	1525. Number of Good Ways to Split a String	Medium	632	17
792	1309. Decrypt String from Alphabet to Integer Mapping	Easy	632	59
793	482. License Key Formatting	Easy	626	916
794	940. Distinct Subsequences II	Hard	624	19
795	1232. Check If It Is a Straight Line	Easy	624	98
796	38. Count and Say	Medium	621	1896
797	933. Number of Recent Calls	Easy	620	2255
798	390. Elimination Game	Medium	618	438
799	1191. K-Concatenation Maximum Sum	Medium	617	55
800	1247. Minimum Swaps to Make Strings Equal	Medium	616	184
801	664. Strange Printer	Hard	615	57
802	820. Short Encoding of Words	Medium	614	231
803	595. Big Countries	Easy	614	783
804	1368. Minimum Cost to Make at Least One Valid Path in a Grid	Hard	613	6
805	1042. Flower Planting With No Adjacent	Medium	613	585
806	1291. Sequential Digits	Medium	612	56
807	952. Largest Component Size by Common Factor	Hard	612	69
808	196. Delete Duplicate Emails	Easy	612	899
809	1352. Product of the Last K Numbers	Medium	611	34
810	1020. Number of Enclaves	Medium	610	28
811	1218. Longest Arithmetic Subsequence of Given Difference	Medium	610	33
812	1189. Maximum Number of Balloons	Easy	609	50
813	1281. Subtract the Product and Sum of Digits of an Integer	Easy	608	156
814	790. Domino and Tromino Tiling	Medium	605	314
815	1446. Consecutive Characters	Easy	604	16
816	835. Image Overlap	Medium	604	789
817	1547. Minimum Cost to Cut a Stick	Hard	602	10
818	433. Minimum Genetic Mutation	Medium	599	77
819	864. Shortest Path to Get All Keys	Hard	598	23
820	1389. Create Target Array in the Given Order	Easy	598	804
821	717. 1-bit and 2-bit Characters	Easy	598	1535
822	1320. Minimum Distance to Type a Word Using Two Fingers	Hard	597	25
823	1095. Find in Mountain Array	Hard	597	44
824	1483. Kth Ancestor of a Tree Node	Hard	596	65
825	1310. XOR Queries of a Subarray	Medium	594	25
826	753. Cracking the Safe	Hard	594	871
827	995. Minimum Number of K Consecutive Bit Flips	Hard	592	45
828	197. Rising Temperature	Easy	588	277
829	667. Beautiful Arrangement II	Medium	588	905
830	1472. Design Browser History	Medium	586	69
831	803. Bricks Falling When Hit	Hard	586	155
832	971. Flip Binary Tree To Match Preorder Traversal	Medium	586	220
833	1356. Sort Integers by The Number of 1 Bits	Easy	585	26
834	600. Non-negative Integers without Consecutive Ones	Hard	585	81
835	1439. Find the Kth Smallest Sum of a Matrix With Sorted Rows	Hard	584	7
836	976. Largest Perimeter Triangle	Easy	583	59
837	396. Rotate Function	Medium	583	190
838	183. Customers Who Never Order	Easy	582	58
839	839. Similar String Groups	Hard	582	152
840	1344. Angle Between Hands of a Clock	Medium	581	133
841	920. Number of Music Playlists	Hard	580	60
842	805. Split Array With Same Average	Hard	580	98
843	1103. Distribute Candies to People	Easy	580	157
844	777. Swap Adjacent in LR String	Medium	580	533
845	306. Additive Number	Medium	579	552
846	223. Rectangle Area	Medium	579	899
847	1424. Diagonal Traverse II	Medium	577	65
848	397. Integer Replacement	Medium	575	376
849	1572. Matrix Diagonal Sum	Easy	573	12
850	1461. Check If a String Contains All Binary Codes of Size K	Medium	573	64
851	826. Most Profit Assigning Work	Medium	573	87
852	985. Sum of Even Numbers After Queries	Easy	571	196
853	1380. Lucky Numbers in a Matrix	Easy	570	50
854	1475. Final Prices With a Special Discount in a Shop	Easy	569	43
855	1486. XOR Operation in an Array	Easy	568	242
856	1292. Maximum Side Length of a Square with Sum Less than or Equal to Threshold	Medium	567	43
857	275. H-Index II	Medium	567	887
858	514. Freedom Trail	Hard	565	28
859	1402. Reducing Dishes	Hard	565	102
860	1425. Constrained Subsequence Sum	Hard	564	25
861	1234. Replace the Substring for Balanced String	Medium	563	121
862	1551. Minimum Operations to Make Array Equal	Medium	562	103
863	786. K-th Smallest Prime Fraction	Hard	561	33
864	1411. Number of Ways to Paint N × 3 Grid	Hard	560	26
865	502. IPO	Hard	560	53
866	1354. Construct Target Array With Multiple Sums	Hard	560	68
867	1223. Dice Roll Simulation	Hard	559	166
868	458. Poor Pigs	Hard	559	1055
869	1373. Maximum Sum BST in Binary Tree	Hard	558	79
870	691. Stickers to Spell Word	Hard	557	55
871	824. Goat Latin	Easy	555	980
872	71. Simplify Path	Medium	554	154
873	1546. Maximum Number of Non-Overlapping Subarrays With Sum Equals Target	Medium	553	11
874	1387. Sort Integers by The Power Value	Medium	550	70
875	1300. Sum of Mutated Array Closest to Target	Medium	548	72
876	817. Linked List Components	Medium	548	1498
877	1375. Bulb Switcher III	Medium	547	88
878	915. Partition Array into Disjoint Intervals	Medium	546	39
879	1497. Check If Array Pairs Are Divisible by k	Medium	545	47
880	1313. Decompress Run-Length Encoded List	Easy	545	907
881	948. Bag of Tokens	Medium	544	273
882	1464. Maximum Product of Two Elements in an Array	Easy	543	96
883	1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree	Medium	537	716
884	732. My Calendar III	Hard	534	127
885	262. Trips and Users	Hard	534	377
886	902. Numbers At Most N Given Digit Set	Hard	532	70
887	1125. Smallest Sufficient Team	Hard	531	10
888	1156. Swap For Longest Repeated Character Substring	Medium	529	52
889	830. Positions of Large Groups	Easy	522	106
890	1518. Water Bottles	Easy	521	43
891	911. Online Election	Medium	521	427
892	996. Number of Squareful Arrays	Hard	520	23
893	1331. Rank Transform of an Array	Easy	518	41
894	468. Validate IP Address	Medium	518	2091
895	1578. Minimum Deletion Cost to Avoid Repeating Letters	Medium	517	25
896	1222. Queens That Can Attack the King	Medium	517	101
897	1252. Cells with Odd Values in a Matrix	Easy	517	843
898	1366. Rank Teams by Votes	Medium	516	61
899	932. Beautiful Array	Medium	512	619
900	833. Find And Replace in String	Medium	510	577
901	593. Valid Square	Medium	510	635
902	1509. Minimum Difference Between Largest and Smallest Value in Three Moves	Medium	509	64
903	1287. Element Appearing More Than 25% In Sorted Array	Easy	505	35
904	1544. Make The String Great	Easy	503	45
905	352. Data Stream as Disjoint Intervals	Hard	503	123
906	400. Nth Digit	Medium	500	1282
907	1138. Alphabet Board Path	Medium	499	118
908	1278. Palindrome Partitioning III	Hard	498	11
909	956. Tallest Billboard	Hard	497	19
910	365. Water and Jug Problem	Medium	497	932
911	1478. Allocate Mailboxes	Hard	496	8
912	919. Complete Binary Tree Inserter	Medium	494	65
913	1217. Minimum Cost to Move Chips to The Same Position	Easy	494	73
914	391. Perfect Rectangle	Hard	494	90
915	913. Cat and Mouse	Hard	494	93
916	1201. Ugly Number III	Medium	494	316
917	850. Rectangle Area II	Hard	493	34
918	1456. Maximum Number of Vowels in a Substring of Given Length	Medium	490	27
919	1414. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K	Medium	488	42
920	1009. Complement of Base 10 Integer	Easy	488	45
921	809. Expressive Words	Medium	487	1191
922	447. Number of Boomerangs	Medium	486	779
923	626. Exchange Seats	Medium	485	316
924	1499. Max Value of Equation	Hard	483	19
925	1419. Minimum Number of Frogs Croaking	Medium	482	32
926	747. Largest Number At Least Twice of Others	Easy	482	692
927	722. Remove Comments	Medium	480	1287
928	1493. Longest Subarray of 1's After Deleting One Element	Medium	478	10
929	949. Largest Time for Given Digits	Medium	473	847
930	523. Continuous Subarray Sum	Medium	472	86
931	641. Design Circular Deque	Medium	469	48
932	869. Reordered Power of 2	Medium	469	155
933	1553. Minimum Number of Days to Eat N Oranges	Hard	467	37
934	954. Array of Doubled Pairs	Medium	467	65
935	1567. Maximum Length of Subarray With Positive Product	Medium	465	7
936	781. Rabbits in Forest	Medium	465	403
937	788. Rotated Digits	Easy	464	1560
938	1526. Minimum Number of Increments on Subarrays to Form a Target Array	Hard	462	31
939	1415. The k-th Lexicographical String of All Happy Strings of Length n	Medium	460	15
940	1203. Sort Items by Groups Respecting Dependencies	Hard	459	72
941	936. Stamping The Sequence	Hard	459	114
942	1510. Stone Game IV	Hard	457	27
943	1458. Max Dot Product of Two Subsequences	Hard	456	10
944	1529. Bulb Switcher IV	Medium	456	22
945	1361. Validate Binary Tree Nodes	Medium	456	167
946	924. Minimize Malware Spread	Hard	456	349
947	88. Merge Sorted Array	Easy	454	62
948	710. Random Pick with Blacklist	Hard	452	79
949	1208. Get Equal Substrings Within Budget	Medium	450	34
950	1289. Minimum Falling Path Sum II	Hard	449	48
951	1462. Course Schedule IV	Medium	447	43
952	1460. Make Two Arrays Equal by Reversing Sub-arrays	Easy	447	85
953	1524. Number of Sub-arrays With Odd Sum	Medium	446	18
954	1394. Find Lucky Integer in an Array	Easy	445	17
955	517. Super Washing Machines	Hard	444	168
956	1187. Make Array Strictly Increasing	Hard	443	11
957	848. Shifting Letters	Medium	442	76
958	521. Longest Uncommon Subsequence I	Easy	442	4900
959	440. K-th Smallest in Lexicographical Order	Hard	438	64
960	8. String to Integer (atoi)	Medium	438	1198
961	1481. Least Number of Unique Integers after K Removals	Medium	437	45
962	761. Special Binary String	Hard	437	146
963	233. Number of Digit One	Hard	434	783
964	825. Friends Of Appropriate Ages	Medium	432	869
965	1434. Number of Ways to Wear Different Hats to Each Other	Hard	431	5
966	1349. Maximum Students Taking Exam	Hard	431	10
967	1450. Number of Students Doing Homework at a Given Time	Easy	428	109
968	1340. Jump Game V	Hard	426	17
969	1400. Construct K Palindrome Strings	Medium	426	50
970	1346. Check If N and Its Double Exist	Easy	424	65
971	507. Perfect Number	Easy	422	760
972	1018. Binary Prefix Divisible By 5	Easy	420	123
973	1233. Remove Sub-Folders from the Filesystem	Medium	415	65
974	1297. Maximum Number of Occurrences of a Substring	Medium	411	225
975	1494. Parallel Courses II	Hard	410	34
976	1106. Parsing A Boolean Expression	Hard	409	22
977	1003. Check If Word Is Valid After Substitutions	Medium	406	403
978	1370. Increasing Decreasing String	Easy	406	468
979	1502. Can Make Arithmetic Progression From Sequence	Easy	405	33
980	1261. Find Elements in a Contaminated Binary Tree	Medium	405	65
981	1413. Minimum Value to Get Positive Step by Step Sum	Easy	404	123
982	1023. Camelcase Matching	Medium	402	181
983	1072. Flip Columns For Maximum Number of Equal Rows	Medium	400	32
984	1388. Pizza With 3n Slices	Hard	399	5
985	1392. Longest Happy Prefix	Hard	399	20
986	1184. Distance Between Bus Stops	Easy	398	46
987	1115. Print FooBar Alternately	Medium	397	30
988	1269. Number of Ways to Stay in the Same Place After Some Steps	Hard	396	24
989	1177. Can Make Palindrome from Substring	Medium	395	201
990	1170. Compare Strings by Frequency of the Smallest Character	Medium	393	828
991	598. Range Addition II	Easy	392	633
992	756. Pyramid Transition Matrix	Medium	391	393
993	1015. Smallest Integer Divisible by K	Medium	391	397
994	903. Valid Permutations for DI Sequence	Hard	386	33
995	1542. Find Longest Awesome Substring	Hard	383	8
996	1328. Break a Palindrome	Medium	383	336
997	1391. Check if There is a Valid Path in a Grid	Medium	382	192
998	564. Find the Closest Palindrome	Hard	382	1009
999	1449. Form Largest Integer With Digits That Add up to Target	Hard	379	6
1000	1541. Minimum Insertions to Balance a Parentheses String	Medium	378	80
1001	620. Not Boring Movies	Easy	378	340
1002	1275. Find Winner on a Tic Tac Toe Game	Easy	377	115
1003	1422. Maximum Score After Splitting a String	Easy	376	21
1004	757. Set Intersection Size At Least Two	Hard	376	47
1005	1473. Paint House III	Hard	375	20
1006	1537. Get the Maximum Score	Hard	373	26
1007	851. Loud and Rich	Medium	371	369
1008	1535. Find the Winner of an Array Game	Medium	370	24
1009	900. RLE Iterator	Medium	370	112
1010	1408. String Matching in an Array	Easy	368	64
1011	1566. Detect Pattern of Length M Repeated K or More Times	Easy	367	55
1012	1492. The kth Factor of n	Medium	365	145
1013	420. Strong Password Checker	Hard	364	1042
1014	1520. Maximum Number of Non-Overlapping Substrings	Hard	363	48
1015	1260. Shift 2D Grid	Easy	363	126
1016	893. Groups of Special-Equivalent Strings	Easy	363	1333
1017	955. Delete Columns to Make Sorted II	Medium	362	56
1018	1255. Maximum Score Words Formed by Letters	Hard	361	28
1019	1496. Path Crossing	Easy	360	7
1020	1128. Number of Equivalent Domino Pairs	Easy	360	181
1021	1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence	Easy	359	13
1022	1579. Remove Max Number of Edges to Keep Graph Fully Traversable	Hard	358	3
1023	1263. Minimum Moves to Move a Box to Their Target Location	Hard	358	20
1024	1433. Check If a String Can Break Another String	Medium	357	94
1025	1562. Find Latest Group of Size M	Medium	356	80
1026	891. Sum of Subsequence Widths	Hard	356	119
1027	427. Construct Quad Tree	Medium	356	522
1028	699. Falling Squares	Hard	355	66
1029	1139. Largest 1-Bordered Square	Medium	355	67
1030	1508. Range Sum of Sorted Subarray Sums	Medium	355	70
1031	1359. Count All Valid Pickup and Delivery Options	Hard	354	43
1032	423. Reconstruct Original Digits from English	Medium	354	1045
1033	649. Dota2 Senate	Medium	353	268
1034	885. Spiral Matrix III	Medium	353	424
1035	504. Base 7	Easy	352	171
1036	1131. Maximum of Absolute Value Expression	Medium	352	277
1037	1513. Number of Substrings With Only 1s	Medium	351	17
1038	1178. Number of Valid Words for Each Puzzle	Hard	350	36
1039	1163. Last Substring in Lexicographical Order	Hard	350	379
1040	762. Prime Number of Set Bits in Binary Representation	Easy	350	413
1041	999. Available Captures for Rook	Easy	350	520
1042	1404. Number of Steps to Reduce a Number in Binary Representation to One	Medium	349	26
1043	1240. Tiling a Rectangle with the Fewest Squares	Hard	349	336
1044	1157. Online Majority Element In Subarray	Hard	346	39
1045	1284. Minimum Number of Flips to Convert Binary Matrix to Zero Matrix	Hard	345	36
1046	497. Random Point in Non-overlapping Rectangles	Medium	345	543
1047	736. Parse Lisp Expression	Hard	344	255
1048	908. Smallest Range I	Easy	344	1412
1049	372. Super Pow	Medium	343	930
1050	960. Delete Columns to Make Sorted III	Hard	341	9
1051	892. Surface Area of 3D Shapes	Easy	340	491
1052	1444. Number of Ways of Cutting a Pizza	Hard	339	8
1053	1451. Rearrange Words in a Sentence	Medium	338	56
1054	858. Mirror Reflection	Medium	338	676
1055	879. Profitable Schemes	Hard	335	35
1056	561. Array Partition I	Easy	332	68
1057	984. String Without AAA or BBB	Medium	332	299
1058	1561. Maximum Number of Coins You Can Get	Medium	331	61
1059	1030. Matrix Cells in Distance Order	Easy	331	163
1060	434. Number of Segments in a String	Easy	330	892
1061	1491. Average Salary Excluding the Minimum and Maximum Salary	Easy	329	64
1062	868. Binary Gap	Easy	329	567
1063	1420. Build Array Where You Can Find The Maximum Exactly K Comparisons	Hard	327	8
1064	927. Three Equal Parts	Hard	327	67
1065	537. Complex Number Multiplication	Medium	327	855
1066	1531. String Compression II	Hard	324	32
1067	1036. Escape a Large Maze	Hard	324	121
1068	928. Minimize Malware Spread II	Hard	322	63
1069	1559. Detect Cycles in 2D Grid	Hard	320	9
1070	883. Projection Area of 3D Shapes	Easy	320	1014
1071	478. Generate Random Point in a Circle	Medium	318	617
1072	1441. Build an Array With Stack Operations	Easy	317	553
1073	661. Image Smoother	Easy	314	1332
1074	806. Number of Lines To Write String	Easy	313	1010
1075	326. Power of Three	Easy	312	42
1076	393. UTF-8 Validation	Medium	312	1310
1077	1536. Minimum Swaps to Arrange a Binary Grid	Medium	311	54
1078	878. Nth Magical Number	Hard	311	72
1079	596. Classes More Than 5 Students	Easy	311	806
1080	1012. Numbers With Repeated Digits	Hard	310	55
1081	492. Construct the Rectangle	Easy	307	296
1082	1417. Reformat The String	Easy	306	61
1083	640. Solve the Equation	Medium	306	612
1084	149. Max Points on a Line	Hard	304	76
1085	1437. Check If All 1's Are at Least Length K Places Away	Easy	304	186
1086	966. Vowel Spellchecker	Medium	304	663
1087	385. Mini Parser	Medium	303	1007
1088	1573. Number of Ways to Split a String	Medium	300	47
1089	1001. Grid Illumination	Hard	300	85
1090	587. Erect the Fence	Hard	299	204
1091	1147. Longest Chunked Palindrome Decomposition	Hard	298	19
1092	1471. The k Strongest Values in an Array	Medium	298	78
1093	488. Zuma Game	Hard	298	329
1094	1096. Brace Expansion II	Hard	294	174
1095	794. Valid Tic-Tac-Toe State	Medium	294	811
1096	1386. Cinema Seat Allocation	Medium	293	172
1097	1179. Reformat Department Table	Easy	291	218
1098	1318. Minimum Flips to Make a OR b Equal to c	Medium	290	30
1099	1324. Print Words Vertically	Medium	290	78
1100	1534. Count Good Triplets	Easy	288	688
1101	1558. Minimum Numbers of Function Calls to Make Target Array	Medium	287	16
1102	1080. Insufficient Nodes in Root to Leaf Paths	Medium	285	400
1103	1227. Airplane Seat Assignment Probability	Medium	284	520
1104	998. Maximum Binary Tree II	Medium	283	545
1105	1519. Number of Nodes in the Sub-Tree With the Same Label	Medium	278	272
1106	906. Super Palindromes	Hard	278	357
1107	798. Smallest Rotation with Highest Score	Hard	277	18
1108	1576. Replace All ?'s to Avoid Consecutive Repeating Characters	Easy	277	119
1109	1363. Largest Multiple of Three	Hard	275	43
1110	1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold	Medium	275	46
1111	192. Word Frequency	Medium	275	191
1112	1224. Maximum Equal Frequency	Hard	274	30
1113	1206. Design Skiplist	Hard	273	33
1114	899. Orderly Queue	Hard	273	232
1115	1195. Fizz Buzz Multithreaded	Medium	272	203
1116	1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree	Hard	271	35
1117	944. Delete Columns to Make Sorted	Easy	271	1893
1118	1117. Building H2O	Medium	268	77
1119	1416. Restore The Array	Hard	267	8
1120	812. Largest Triangle Area	Easy	267	1173
1121	1017. Convert to Base -2	Medium	266	196
1122	874. Walking Robot Simulation	Easy	266	1042
1123	1078. Occurrences After Bigram	Easy	265	258
1124	1237. Find Positive Integer Solution for a Given Equation	Medium	262	975
1125	1330. Reverse Subarray To Maximize Array Value	Hard	261	30
1126	866. Prime Palindrome	Medium	261	662
1127	1116. Print Zero Even Odd	Medium	259	177
1128	601. Human Traffic of Stadium	Hard	257	435
1129	1503. Last Moment Before All Ants Fall Out of a Plank	Medium	256	157
1130	1040. Moving Stones Until Consecutive II	Medium	256	441
1131	1575. Count All Possible Routes	Hard	254	12
1132	1545. Find Kth Bit in Nth Binary String	Medium	254	22
1133	1172. Dinner Plate Stacks	Hard	253	38
1134	1550. Three Consecutive Odds	Easy	253	39
1135	1403. Minimum Subsequence in Non-Increasing Order	Easy	252	309
1136	1409. Queries on a Permutation With Key	Medium	252	440
1137	1563. Stone Game V	Hard	249	51
1138	592. Fraction Addition and Subtraction	Medium	246	379
1139	1487. Making File Names Unique	Medium	246	394
1140	748. Shortest Completing Word	Easy	245	743
1141	1377. Frog Position After T Seconds	Hard	243	76
1142	1505. Minimum Possible Integer After at Most K Adjacent Swaps On Digits	Hard	242	14
1143	963. Minimum Area Rectangle II	Medium	242	337
1144	1569. Number of Ways to Reorder Array to Get Same BST	Hard	241	35
1145	1476. Subrectangle Queries	Medium	241	661
1146	1556. Thousand Separator	Easy	240	8
1147	1523. Count Odd Numbers in an Interval Range	Easy	238	26
1148	793. Preimage Size of Factorial Zeroes Function	Hard	238	64
1149	789. Escape The Ghosts	Medium	238	381
1150	1307. Verbal Arithmetic Puzzle	Hard	236	67
1151	522. Longest Uncommon Subsequence II	Medium	236	693
1152	466. Count The Repetitions	Hard	235	216
1153	1253. Reconstruct a 2-Row Binary Matrix	Medium	234	19
1154	1540. Can Convert String in K Moves	Medium	234	179
1155	519. Random Flip Matrix	Medium	230	80
1156	1301. Number of Paths with Max Score	Hard	224	14
1157	816. Ambiguous Coordinates	Medium	223	536
1158	1568. Minimum Number of Days to Disconnect Island	Hard	221	102
1159	1034. Coloring A Border	Medium	221	405
1160	964. Least Operators to Express Number	Hard	220	56
1161	1374. Generate a String With Characters That Have Odd Counts	Easy	220	836
1162	1521. Find a Value of a Mysterious Function Closest to Target	Hard	219	8
1163	1111. Maximum Nesting Depth of Two Valid Parentheses Strings	Medium	218	984
1164	483. Smallest Good Base	Hard	217	381
1165	193. Valid Phone Numbers	Easy	214	585
1166	1090. Largest Values From Labels	Medium	213	480
1167	808. Soup Servings	Medium	212	652
1168	384. Shuffle an Array	Medium	208	249
1169	553. Optimal Division	Medium	208	1245
1170	840. Magic Squares In Grid	Medium	208	1385
1171	882. Reachable Nodes In Subdivided Graph	Hard	204	162
1172	1144. Decrease Elements To Make Array Zigzag	Medium	203	127
1173	195. Tenth Line	Easy	200	282
1174	1399. Count Largest Group	Easy	199	548
1175	1397. Find All Good Strings	Hard	198	90
1176	496. Next Greater Element I	Easy	196	17
1177	1385. Find the Distance Value Between Two Arrays	Easy	193	839
1178	335. Self Crossing	Hard	192	419
1179	1016. Binary String With Substrings Representing 1 To N	Medium	189	418
1180	1317. Convert Integer to the Sum of Two No-Zero Integers	Easy	187	183
1181	1452. People Whose List of Favorite Companies Is Not a Subset of Another List	Medium	184	173
1182	1169. Invalid Transactions	Medium	184	1067
1183	65. Valid Number	Hard	182	364
1184	1401. Circle and Rectangle Overlapping	Medium	180	48
1185	1185. Day of the Week	Easy	180	1600
1186	672. Bulb Switcher II	Medium	178	1010
1187	1175. Prime Arrangements	Easy	177	304
1188	1037. Valid Boomerang	Easy	171	306
1189	982. Triples with Bitwise AND Equal To Zero	Hard	170	165
1190	1154. Day of the Year	Easy	170	239
1191	1577. Number of Ways Where Square of Number Is Equal to Product of Two Numbers	Medium	169	38
1192	1073. Adding Two Negabinary Numbers	Medium	169	75
1193	1447. Simplified Fractions	Medium	167	29
1194	970. Powerful Integers	Medium	167	56
1195	1210. Minimum Moves to Reach Target with Rotations	Hard	165	51
1196	1467. Probability of a Two Boxes Having The Same Number of Distinct Balls	Hard	165	126
1197	1333. Filter Restaurants by Vegan-Friendly, Price and Distance	Medium	164	144
1198	1276. Number of Burgers with No Waste of Ingredients	Medium	164	168
1199	1238. Circular Permutation in Binary Representation	Medium	163	139
1200	1250. Check If It Is a Good Array	Hard	159	226
1201	782. Transform to Chessboard	Hard	158	161
1202	1311. Get Watched Videos by Your Friends	Medium	158	249
1203	749. Contain Virus	Hard	155	326
1204	1507. Reformat Date	Easy	152	231
1205	1560. Most Visited Sector in a Circular Track	Easy	145	333
1206	1226. The Dining Philosophers	Medium	137	154
1207	1298. Maximum Candies You Can Get from Boxes	Hard	136	102
1208	1418. Display Table of Food Orders in a Restaurant	Medium	136	266
1209	457. Circular Array Loop	Medium	135	118
1210	481. Magical String	Medium	134	790
1211	1051. Height Checker	Easy	133	20
1212	1006. Clumsy Factorial	Medium	132	185
1213	1515. Best Position for a Service Centre	Hard	126	167
1214	1362. Closest Divisors	Medium	123	72
1215	1390. Four Divisors	Medium	123	128
1216	1316. Distinct Echo Substrings	Hard	118	141
1217	1033. Moving Stones Until Consecutive	Easy	118	545
1218	1360. Number of Days Between Two Dates	Easy	117	576
1219	558. Logical OR of Two Binary Grids Represented as Quad-Trees	Medium	115	373
1220	1432. Max Difference You Can Get From Changing an Integer	Medium	113	153
1221	591. Tag Validator	Hard	111	488
1222	1410. HTML Entity Parser	Medium	107	234
1223	479. Largest Palindrome Product	Hard	104	1390
1224	831. Masking Personal Information	Medium	99	368
1225	1453. Maximum Number of Darts Inside of a Circular Dartboard	Hard	96	219
1226	551. Student Attendance Record I	Easy	95	9
1227	770. Basic Calculator IV	Hard	95	922
1228	822. Card Flipping Game	Medium	90	552
1229	904. Fruit Into Baskets	Medium	86	5
1230	810. Chalkboard XOR Game	Hard	86	215
1231	506. Relative Ranks	Easy	84	3
1232	1357. Apply Discount Every n Orders	Medium	82	136
1233	194. Transpose File	Medium	82	217
1234	1332. Remove Palindromic Subsequences	Easy	70	140
1235	1053. Previous Permutation With One Swap	Medium	65	8
1236	495. Teemo Attacking	Easy	61	7
1237	972. Equal Rational Numbers	Hard	58	164
1238	1348. Tweet Counts Per Frequency	Medium	44	83
1239	655. Print Binary Tree	Medium	26	32
1240	909. Snakes and Ladders	Medium	20	2
1241	1093. Statistics from a Large Sample	Medium	20	25