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![[Leetcode] 323. Number of Connected Components in an Undirected Graph](/_next/image?url=https%3A%2F%2Fi.ytimg.com%2Fvi%2FYX6VGR0u8vM%2Fhq720.jpg%3Fsqp%3D-oaymwExCNAFEJQDSFryq4qpAyMIARUAAIhCGAHwAQH4Af4JgAK-BYoCDAgAEAEYZSBlKGUwDw%3D%3D%26rs%3DAOn4CLDhNd_HB5T147cbewUdZljE1HBSyw&w=256&q=75)