19 lines
393 B
Nix
19 lines
393 B
Nix
|
{lib, ...}: {file}: rec {
|
||
|
|
content = builtins.readFile file;
|
||
|
|
|
||
|
|
muls = memory: memory
|
||
|
|
|> builtins.split ''mul\(([0-9]{0,3}),([0-9]{0,3})\)''
|
||
|
|
|> builtins.filter builtins.isList
|
||
|
|
;
|
||
|
|
|
||
|
|
mul = builtins.foldl'
|
||
|
|
(acc: n: let
|
||
|
|
nums = map lib.strings.toInt n;
|
||
|
|
in acc + ( builtins.elemAt nums 0 ) * ( builtins.elemAt nums 1 ))
|
||
|
|
0
|
||
|
|
;
|
||
|
|
|
||
|
|
part1result = content |> muls |> mul;
|
||
|
|
|
||
|
|
}
|