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# Title Acceptance Difficulty
542 01 Matrix 32.6% Medium
529 Minesweeper 51.8% Medium
515 Find Largest Value in Each Tree Row 53.2% Medium
513 Find Bottom Left Tree Value 55.7% Medium
505 The Maze II 35.5% Medium
499 The Maze III 31.6% Hard
490 The Maze 42.1% Medium
417 Pacific Atlantic Water Flow 33.1% Medium
407 Trapping Rain Water II 36.1% Hard
323 Number of Connected Components in an Undirected Graph 47.3% Medium
317 Shortest Distance from All Buildings 33.4% Hard
310 Minimum Height Trees 28.6% Medium
301 Remove Invalid Parentheses 34.9% Hard
286 Walls and Gates 43.3% Medium
279 Perfect Squares 35.8% Medium
261 Graph Valid Tree 37.2% Medium
210 Course Schedule II 26.5% Medium
207 Course Schedule 31.1% Medium
200 Number of Islands 33.3% Medium
199 Binary Tree Right Side View 39.6% Medium
133 Clone Graph 25.1% Medium
130 Surrounded Regions 17.8% Medium
126 Word Ladder II 13.8% Hard
111 Minimum Depth of Binary Tree 32.6% Easy
107 Binary Tree Level Order Traversal II 38.7% Easy
103 Binary Tree Zigzag Level Order Traversal 33.2% Medium
102 Binary Tree Level Order Traversal 38.1% Medium
101 Symmetric Tree 37.7% Easy
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