Any best task (i.e. those that use 1s), need all rows that are all 0s turned into -1s.
Any worst task (i.e. those that use -1s), need all rows that are all 0s turned into 1s.
Implementation of that conversion is potentially tricky, it's possible to do it in Excel by using the "Text to columns" tool and some clever logic to identify and replace rows, or if you know some programming, you could do it with code.