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# Title Acceptance Difficulty
515 Find Largest Value in Each Tree Row 52.7% Medium
513 Find Bottom Left Tree Value 55.1% Medium
505 The Maze II 34.4% Medium
499 The Maze III 31.9% Hard
490 The Maze 42.7% Medium
417 Pacific Atlantic Water Flow 32.9% Medium
407 Trapping Rain Water II 35.9% Hard
323 Number of Connected Components in an Undirected Graph 47.1% Medium
317 Shortest Distance from All Buildings 33.4% Hard
310 Minimum Height Trees 28.6% Medium
301 Remove Invalid Parentheses 34.8% Hard
286 Walls and Gates 43.0% Medium
279 Perfect Squares 35.5% Medium
261 Graph Valid Tree 36.9% Medium
210 Course Schedule II 26.1% Medium
207 Course Schedule 30.8% Medium
200 Number of Islands 32.8% Medium
199 Binary Tree Right Side View 39.2% Medium
133 Clone Graph 25.0% Medium
130 Surrounded Regions 17.7% Medium
126 Word Ladder II 13.7% Hard
111 Minimum Depth of Binary Tree 32.5% Easy
107 Binary Tree Level Order Traversal II 38.3% Easy
103 Binary Tree Zigzag Level Order Traversal 32.7% Medium
102 Binary Tree Level Order Traversal 37.6% Medium
101 Symmetric Tree 37.4% Easy
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