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    I like your solution to show the maze with Strings. I was thinking about something similar, but didnt found any good signs to show the different walls of a field.

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    This comment is hidden because it contains spoiler information about the solution

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    I'm a bit confused. I'm not meant to calculate the factorial. So I need to get the trailing zeros of the factorial (that I'm not meant to calculate) by some kind of mathematical stunt? Every solution I have would calculate the factorial in some way, to get the trailing zeros.