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Max-Min conversion
Basic Accuracy: 54.6% Submissions: 368 Points: 1

Given a number N. You can perform an operation on it multiple times, in which you can change digit 5 to 6 and vice versa.
You have to return the sum of the maximum number and the minimum number which can be obtained by performing such operations.

Example 1:

Input: N = 35
Output: 71
Explanation: The maximum number which can be
formed is 36 and the minimum number which can
be formed is 35 itself. 

Example 2:

Input: N = 22
Output: 44
Explanation: The maximum number and minimum
number which can be formed is 22 itself.

Your Task:
You need not take any input or print anything. Your task is to complete the function performOperation() which takes a single Number as input and returns the sum of maximum and minimum number.

Expected Time Complexity: O(Log10N)
Expected Auxiliary Space: O(Log10N)

Constraints:
1 ≤ N ≤ 1018

 

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