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https://github.com/Smaug123/advent-of-code-2021
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8 lines
324 B
Mathematica
8 lines
324 B
Mathematica
(* ::Package:: *)
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nums=Import[StringJoin[NotebookDirectory[], "/input.txt"],"Table"];
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part1 = 1##&@@Tr[1##&@@@(#/."up"->-"down")]&;
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part2=1##&@@Rest@Fold[Function[{state,elt},Switch[elt[[1]],"forward",state+{0,elt[[2]],state[[1]] elt[[2]]},"down",MapAt[elt[[2]]+#&,state,1],"up",MapAt[#-elt[[2]]&,state,1]]],{0,0,0},#]&;
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