{ "data": { "question": { "questionId": "1300", "questionFrontendId": "1192", "boundTopicId": null, "title": "Critical Connections in a Network", "titleSlug": "critical-connections-in-a-network", "content": "

There are n servers numbered from 0 to n - 1 connected by undirected server-to-server connections forming a network where connections[i] = [ai, bi] represents a connection between servers ai and bi. Any server can reach other servers directly or indirectly through the network.

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A critical connection is a connection that, if removed, will make some servers unable to reach some other server.

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Return all critical connections in the network in any order.

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Example 1:

\n\"\"\n
\nInput: n = 4, connections = [[0,1],[1,2],[2,0],[1,3]]\nOutput: [[1,3]]\nExplanation: [[3,1]] is also accepted.\n
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Example 2:

\n\n
\nInput: n = 2, connections = [[0,1]]\nOutput: [[0,1]]\n
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Constraints:

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