mftrhu on Keybase, GitHub, HackerNews, Reddit

I usually program in Python, but my first language - a long, long time ago - was Pascal, and lately I have gone back to it to solve these challenges. How d can get their solutions to be so fast is still beyond me.

A few notes on Pascal:

• SetLength(arr, len) gives you arr[0..len-1], and not, as I misread, arr[1..len].
• As a corollary to the previous item, dynamic arrays are mostly not necessary here.
• Unless messing around with $mode, "An integer is 16-bit in TP or FPC modes, or 32-bit in ObjFPC or Delphi modes." - better use int32 or int64 instead.
• Unless messing around with $mode, string will be an alias for ShortString, and ShortString can only contain up to 255 characters (and will truncate the input silently) - better use AnsiString instead.
• As a corollary to the previous two items, messing around with $mode is probably a good idea as it seem to default to Turbo Pascal (tp) mode. Set {$mode fpc} to avoid some issues (e.g. case not working with strings), set {$mode objfpc} to avoid the most common pitfalls.