| 401. | 1368. Minimum Cost to Make at Least One Valid Path in a Grid - Day 18/31 Leetcode January Challenge | 15 | |
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| 402. | 1310. XOR Queries of a Subarray - Day 13/30 Leetcode September Challenge | 11 | |
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| 403. | 1671. Minimum Number of Removals to Make Mountain Array - Day 30/31 Leetcode October Challenge | 25 | |
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| 404. | Larry doesn't know greedy! Leetcode Biweekly Contest 144 (Disaster) with commentary | 11 | |
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| 405. | Advent of Code 2024 Day 2 | 16 | |
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| 406. | 3316. Find Maximum Removals From Source String (Leetcode Medium) | 5 | |
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| 407. | 3398. Smallest Substring With Identical Characters I (Leetcode Hard) | 4 | |
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| 408. | 664. Strange Printer - Day 21/31 Leetcode August Challenge | 37 | |
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| 409. | Mistakes Galore! Leetcode Biweekly Contest 140 (57th) with commentary | 4 | |
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| 410. | All the maths! Leetcode Weekly Contest 422 (36th) with commentary | 11 | |
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| 411. | 3324. Find the Sequence of Strings Appeared on the Screen (Leetcode Medium) | 1 | |
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| 412. | 641. Design Circular Deque - Day 28/30 Leetcode September Challenge | 24 | |
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| 413. | Advent of Code 2024 Day 10 | 11 | |
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| 414. | 3254. Find the Power of K-Size Subarrays I (Leetcode Medium) | 4 | |
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| 415. | 3331. Find Subtree Sizes After Changes (Leetcode Medium) | 2 | |
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| 416. | Bitmask Bob! Leetcode Weekly Contest 414 (24th) with commentary | 15 | |
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| 417. | 2416. Sum of Prefix Scores of Strings - Day 25/30 Leetcode September Challenge | 14 | |
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| 418. | 3379. Transformed Array (Leetcode Easy) | 4 | |
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| 419. | 264. Ugly Number II - Day 18/31 Leetcode August Challenge | 13 | |
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| 420. | 3301. Maximize the Total Height of Unique Towers (Leetcode Medium) | 1 | |
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| 421. | 320. Generalized Abbreviation - Week 4/5 Leetcode August Challenge | 3 | |
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| 422. | 362. Design Hit Counter (Leetcode Medium) | 8 | |
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| 423. | 265. Paint House II - Week 5/5 Leetcode October Challenge | 9 | |
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| 424. | 860. Lemonade Change - Day 15/31 Leetcode August Challenge | 11 | |
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| 425. | 2707. Extra Characters in a String - Day 23/30 Leetcode September Challenge | 18 | |
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| 426. | 267. Palindrome Permutation II (Leetcode Medium) | 5 | |
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| 427. | 762. Prime Number of Set Bits in Binary Representation (Leetcode Easy) | 14 | |
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| 428. | 592. Fraction Addition and Subtraction - Day 22/31 Leetcode August Challenge | 14 | |
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| 429. | 3295. Report Spam Message (Leetcode Medium) | 6 | |
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| 430. | 885. Spiral Matrix III - Day 8/31 Leetcode August Challenge | 22 | |
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| 431. | 1945. Sum of Digits of String After Convert - Day 3/30 Leetcode September Challenge | 31 | |
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| 432. | 3251. Find the Count of Monotonic Pairs II (Leetcode Hard) | 8 | |
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| 433. | 2807. Insert Greatest Common Divisors in Linked List - Day 10/30 Leetcode September Challenge | 22 | |
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| 434. | 1653. Minimum Deletions to Make String Balanced - Day 30/31 Leetcode July Challenge | 29 | |
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| 435. | 3643. Flip Square Submatrix Vertically (Leetcode Easy) | 5 | |
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| 436. | 3627. Maximum Median Sum of Subsequences of Size 3 (Leetcode Medium) | 3 | |
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| 437. | 3266. Final Array State After K Multiplication Operations II (Leetcode Hard) | 10 | |
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| 438. | 3652. Best Time to Buy and Sell Stock using Strategy (Leetcode Medium) | 6 | |
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| 439. | 3479. Fruits Into Baskets III - Day 6/31 Leetcode August Challenge | 27 | |
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| 440. | 2176. Count Equal and Divisible Pairs in an Array - Day 17/30 Leetcode April Challenge | 16 | |
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| 441. | 3660. Jump Game IX (Leetcode Medium) | 7 | |
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| 442. | 1166. Design File System - Week 3/5 Leetcode August Challenge | 12 | |
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| 443. | What's the basis! Leetcode Weekly Contest 460 (Virtual) with commentary | 8 | |
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| 444. | 3514. Number of Unique XOR Triplets II (Leetcode Medium) | 5 | |
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| 445. | 314. Binary Tree Vertical Order Traversal - Week 1/5 Leetcode August Challenge | 6 | |
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| 446. | 3644. Maximum K to Sort a Permutation (Leetcode Medium) | 14 | |
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| 447. | 2044. Count Number of Maximum Bitwise-OR Subsets - Day 28/31 Leetcode July Challenge | 25 | |
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| 448. | 368. Largest Divisible Subset - Day 6/30 Leetcode April Challenge | 17 | |
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| 449. | 3602. Hexadecimal and Hexatrigesimal Conversion (Leetcode Easy) | 6 | |
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| 450. | 3553. Minimum Weighted Subgraph With the Required Paths II (Leetcode Hard) | 3 | |
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| 451. | 527. Word Abbreviation - Week 4/5 Leetcode July Challenge | 4 | |
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| 452. | 3502. Minimum Cost to Reach Every Position (Leetcode Easy) | 3 | |
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| 453. | 3304. Find the K-th Character in String Game I - Day 3/31 Leetcode July Challenge | 32 | |
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| 454. | 1863. Sum of All Subset XOR Totals - Day 5/30 Leetcode April Challenge | 16 | |
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| 455. | 3608. Minimum Time for K Connected Components (Leetcode Medium) | 4 | |
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| 456. | 2914. Minimum Number of Changes to Make Binary String Beaut.. - Day 5/30 Leetcode November Challenge | 20 | |
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| 457. | 3596. Minimum Cost Path with Alternating Directions I (Leetcode Medium) | 13 | |
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| 458. | 3449. Maximize the Minimum Game Score (Leetcode Hard) | 2 | |
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| 459. | 3603. Minimum Cost Path with Alternating Directions II (Leetcode Medium) | 3 | |
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| 460. | 3287. Find the Maximum Sequence Value of Array (Leetcode Hard) | 6 | |
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| 461. | 3423. Maximum Difference Between Adjacent Elements in a Circular Array - Day 12/30 Leetcode June | 11 | |
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| 462. | Advent of Code 2024 Day 4 | 13 | |
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| 463. | 1394. Find Lucky Integer in an Array - Day 5/31 Leetcode July Challenge | 23 | |
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| 464. | 719. Find K-th Smallest Pair Distance - Day 14/31 Leetcode August Challenge | 20 | |
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| 465. | 3024. Type of Triangle - Day 19/31 Leetcode May Challenge | 20 | |
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| 466. | Close but not quite! Leetcode Weekly Contest 426 (Virtual 101st) with commentary | 8 | |
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| 467. | 3597. Partition String (Leetcode Medium) | 2 | |
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| 468. | 333. Largest BST Subtree - Week 1/5 Leetcode July Challenge | 18 | |
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| 469. | 3519. Count Numbers with Non-Decreasing Digits (Leetcode Hard) | 4 | |
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| 470. | 1975. Maximum Matrix Sum - Day 24/30 Leetcode November Challenge | 6 | |
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| 471. | 3573. Best Time to Buy and Sell Stock V (Leetcode Medium) | 3 | |
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| 472. | 3600. Maximize Spanning Tree Stability with Upgrades (Leetcode Hard) | 9 | |
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| 473. | 3470. Permutations IV (Leetcode Hard) | 3 | |
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| 474. | 1861. Rotating the Box - Day 23/30 Leetcode November Challenge | 9 | |
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| 475. | Tricky edge cases! Leetcode Weekly Contest 449 (Virtual 42nd) with commentary | 1 | |
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| 476. | 3572. Maximize Y‑Sum by Picking a Triplet of Distinct X‑Values (Leetcode Medium) | 3 | |
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| 477. | 1749. Maximum Absolute Sum of Any Subarray - Day 26/28 Leetcode February Challenge | 15 | |
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| 478. | Solved 5 problems! Leetcode Biweekly Contest 138 (93rd) with commentary | 9 | |
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| 479. | 3532. Path Existence Queries in a Graph I (Leetcode Medium) | 1 | |
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| 480. | 3558. Number of Ways to Assign Edge Weights I (Leetcode Medium) | 1 | |
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| 481. | 3456. Find Special Substring of Length K (Leetcode Easy) | 3 | |
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| 482. | 703. Kth Largest Element in a Stream - Day 12/31 Leetcode August Challenge | 19 | |
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| 483. | 3507. Minimum Pair Removal to Sort Array I (Leetcode Easy) | 4 | |
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| 484. | 3518. Smallest Palindromic Rearrangement II (Leetcode Hard) | 6 | |
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| 485. | 3407. Substring Matching Pattern (Leetcode Easy) | 6 | |
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| 486. | 273. Integer to English Words - Day 7/31 Leetcode August Challenge | 28 | |
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| 487. | 2523. Closest Prime Numbers in Range - Day 7/31 Leetcode March Challenge | 25 | |
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| 488. | 1922. Count Good Numbers - Day 13/30 Leetcode April Challenge | 12 | |
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| 489. | Advent of Code 2024 Day 14 | 14 | |
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| 490. | 1395. Count Number of Teams - Day 29/31 Leetcode July Challenge | 12 | |
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| 491. | 3459. Length of Longest V-Shaped Diagonal Segment (Leetcode Hard) | 8 | |
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| 492. | 3375. Minimum Operations to Make Array Values Equal to K - Day 8/30 Leetcode April Challenge | 23 | |
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| 493. | Advent of Code 2024 Day 6 | 17 | |
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| 494. | 2210. Count Hills and Valleys in an Array - Day 27/31 Leetcode July Challenge | 34 | |
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| 495. | 1400. Construct K Palindrome Strings - Day 11/31 Leetcode January Challenge | 19 | |
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| 496. | 416. Partition Equal Subset Sum - Day 7/30 Leetcode April Challenge | 15 | |
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| 497. | 1196. How Many Apples Can You Put into the Basket (Leetcode Easy) | 7 | |
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| 498. | 3599. Partition Array to Minimize XOR (Leetcode Medium) | 3 | |
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| 499. | Advent of Code 2024 Day 25 | 0 | |
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| 500. | 3510. Minimum Pair Removal to Sort Array II (Leetcode Hard) | 5 | |
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