In this task, you are given a date in a particular format and you need to convert to another format. If given format is "dd/mm/yyyy" then convert to "mm/dd/yyyy". If given format is "mm/dd/yyyy" then convert to "dd/mm/yyyy".

Example Input: 01/12/1680, input_format=mm/dd/yyyy
Example Output: 12/01/1680

Example Input: 05/13/1838, input_format=mm/dd/yyyy
Example Output: 13/05/1838

Example Input: 15/08/2018, input_format=dd/mm/yyyy
Example Output:
08/15/2018