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# Title Acceptance Difficulty
542 01 Matrix 33.0% Medium
529 Minesweeper 49.9% Medium
515 Find Largest Value in Each Tree Row 54.8% Medium
513 Find Bottom Left Tree Value 55.6% Medium
505 The Maze II 36.5% Medium
499 The Maze III 32.1% Hard
490 The Maze 42.9% Medium
417 Pacific Atlantic Water Flow 33.6% Medium
407 Trapping Rain Water II 36.9% Hard
323 Number of Connected Components in an Undirected Graph 47.8% Medium
317 Shortest Distance from All Buildings 33.8% Hard
310 Minimum Height Trees 28.8% Medium
301 Remove Invalid Parentheses 35.0% Hard
286 Walls and Gates 43.9% Medium
279 Perfect Squares 36.6% Medium
261 Graph Valid Tree 37.6% Medium
210 Course Schedule II 27.7% Medium
207 Course Schedule 31.9% Medium
200 Number of Islands 34.3% Medium
199 Binary Tree Right Side View 40.6% Medium
133 Clone Graph 25.1% Medium
130 Surrounded Regions 18.3% Medium
126 Word Ladder II 14.1% Hard
111 Minimum Depth of Binary Tree 33.0% Easy
107 Binary Tree Level Order Traversal II 39.9% Easy
103 Binary Tree Zigzag Level Order Traversal 34.3% Medium
102 Binary Tree Level Order Traversal 39.4% Medium
101 Symmetric Tree 38.6% Easy
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