39 lines
941 B
JavaScript
39 lines
941 B
JavaScript
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import * as fs from "fs";
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function load(filename) {
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return fs.readFileSync(filename, "utf8")
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.trim()
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.split("\n");
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}
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let example = load("example");
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let input = load("input");
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function countSides(cube, input) {
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let [x, y, z] = cube.split(",").map(n => parseInt(n));
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let count = 6;
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if (input.includes([x+1, y, z].join(","))) count--;
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if (input.includes([x-1, y, z].join(","))) count--;
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if (input.includes([x, y+1, z].join(","))) count--;
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if (input.includes([x, y-1, z].join(","))) count--;
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if (input.includes([x, y, z+1].join(","))) count--;
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if (input.includes([x, y, z-1].join(","))) count--;
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return count;
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}
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function solve(input) {
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let count = 0;
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input.forEach(cube => {
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count += countSides(cube, input);
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});
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return count;
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}
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const exampleOutput = solve(example);
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if (exampleOutput !== 64) {
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console.log("Example failed with " + exampleOutput);
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process.exit(1); // eslint-disable-line
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}
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console.log(solve(input));
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