For the test file, we have to make a prediction for each product (0,1) for each customer. But I am unable to understand the format of the submission file. For example if I take the first entry in submission file which is "F86J5PC X P5DA"

F86J5PC - This appears to the customer id

P5DA - this is the product id.

So do we have to a prediction whether the customer (F86J5PC ) will buy the product (P5DA ) or not ?

Or do we have to make the prediction for ALL the products that customer (F86J5PC ) might be interested in ...just like in TEST FILE?

Thanks !