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  • The best prep is going back and completing previous years, gives you a good idea of what scaffolding may be useful.

    Reading in maps into arrays (like today) is a common theme.

    (I don't bother with any pre-written code or scaffolding but I will go and copy/paste from previous submissions if I realise there's a useful chunk of time that could be saved.)

    If this year is like any of the previous ones they'll be some form of a pseudo computer that you need to implement that will come back again and again (and slowly be built up), so there will be some reuse built in.

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