Created
December 20, 2021 05:54
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#AdventOfCode - Day 20 Part 2 (pre-golfing, but still ugly...)
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| // comment out top line if you are running it first time... don't blast that fetch! | |
| // I=(await(await fetch("https://adventofcode.com/2021/day/20/input")).text()); | |
| // I=`..#.#..#####.#.#.#.###.##.....###.##.#..###.####..#####..#....#..#..##..###..######.###...####..#..#####..##..#.#####...##.#.#..#.##..#.#......#.###.######.###.####...#.##.##..#..#..#####.....#.#....###..#.##......#.....#..#..#..##..#...##.######.####.####.#.#...#.......#..#.#.#...####.##.#......#..#...##.#.##..#...##.#.##..###.#......#.#.......#.#.#.####.###.##...#.....####.#..#..#.##.#....##..#.####....##...##..#...#......#.#.......#.......##..####..#...#.#.#...##..#.#..###..#####........#..####......#..# | |
| // #..#. | |
| // #.... | |
| // ##..# | |
| // ..#.. | |
| // ..###`; | |
| [key,...rest]=I.split(/\n+/) | |
| l=(x,y,z)=>((rest[y]&&rest[y][x]||key[(count%2)&&511])=='#')<<z | |
| for(count=50;count--;console.log(rest=output))for(output=[],y=0;line=rest[y]||[],y<rest.length+4;y++)for(x=0;x<rest[0].length+4;x++){ | |
| out=l(x-2,y-2,8)+l(x-1,y-2,7)+l(x,y-2,6) | |
| +l(x-2,y-1,5)+l(x-1,y-1,4)+l(x,y-1,3) | |
| +l(x-2,y,2)+l(x-1,y,1)+l(x,y,0); | |
| (output[y]??=[])[x]=key[out]; | |
| } | |
| output.reduce((m,line,y)=>m+line.reduce((m,c,x)=>m+l(x,y,0),0),0) |
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