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Good luck
FYI one of the features of Advent of Code is that we all get given different inputs so our answers will be different.
The examples are all the same but each of us gets different inputs for us to solve
As soon as I read that the smallest of each list is paired up together, I knew to just sort both lists and find the difference. Getting the absolute value was just found by testing the result, because the example doesn't account for negative differences.
I think the only way is to either use the anonymous name, which you can set on the settings page, or create a github account, and transfer your data to a new advent of code account that logged in with your new github account (you can transfer from the settings page).