Set up pytorch model

I need a basic nn set up that learns assigning m integers to m integers.,
e.g. [4,3,11,22,1,23,9,5,6,16,12,0,0,0,0] -> [2,2,1,1,3,2,3,2,1,3,2,0,0,0,0]
would be one assignement. I prepare the training data after the set up.
Please store a few randomly chosen training assignements in a .txt-file to initialize
the method. Note that, one use case has fixed m, you may set it up with m,=20, doesn't matter. ¨

I need to clearly see in the code where to upload my training data.

If you understand what I basically need, you're welcome to bid.

Thanks and best regards
Daniel