'''

5192->1192. Critical Connections in a Network
Difficulty: Hard
There are n servers numbered from 0 to n-1 connected by undirected server-to-server connections forming a network where connections[i] = [a, b] represents a connection between servers a and b.

Any server can reach any other server directly or indirectly through the network.

A critical connection is a connection that,

if removed, will make some server unable to reach some other server.

Return all critical connections in the network in any order.



Example 1:



Input: n = 4, connections = [[0,1],[1,2],[2,0],[1,3]]
Output: [[1,3]]
Explanation: [[3,1]] is also accepted.


Constraints:

1 <= n <= 10^5
n-1 <= connections.length <= 10^5
connections[i][0] != connections[i][1]
There are no repeated connections.

'''

class Solution(object):
    def criticalConnections(self, n, connections):
        """
        :type n: int
        :type connections: List[List[int]]
        :rtype: List[List[int]]
        """
        for var in locals().keys():
            setattr(self, str(var), locals()[var])
        pass


n=1234
connection="ssss"
print(Solution().criticalConnections(n, connection))
