just to be sure, could you upload the actual input file
You can put it in a zip folder to upload here.
Also, it is unclear how the input file will look if a person's mother and/or father are unknown.
Can you get any rules on the structure of the input file from the instructor?
Any ideas about the file format?
I'm sorry,After reviewing the question, I regret that I won't be able to assist you at this time.
I am opting out and opening the question up to other professionals here who may be able to help.