You have an undirected, connected graph of n nodes labeled from 0 to n - 1. You are given an array graph where graph[i] is a list of all the nodes connected with node i by an edge.
Return the length of the shortest path that visits every node. You may start and stop at any node, you may revisit nodes multiple times, and you may reuse edges.
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Example 1:
\n![\"\"](\"https://assets.leetcode.com/uploads/2021/05/12/shortest1-graph.jpg\")
\n\nInput: graph = [[1,2,3],[0],[0],[0]]\nOutput: 4\nExplanation: One possible path is [1,0,2,0,3]\n\n\n
Example 2:
\n![\"\"](\"https://assets.leetcode.com/uploads/2021/05/12/shortest2-graph.jpg\")
\n\nInput: graph = [[1],[0,2,4],[1,3,4],[2],[1,2]]\nOutput: 4\nExplanation: One possible path is [0,1,4,2,3]\n\n\n
\n
Constraints:
\n\nn == graph.length1 <= n <= 120 <= graph[i].length < ngraph[i] does not contain i.graph[a] contains b, then graph[b] contains a.Compiled with clang 11 using the latest C++ 20 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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