34 lines
1,016 B
JavaScript
34 lines
1,016 B
JavaScript
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const { Glib, Sets, Vector, twodee } = require('../../lib');
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const parse = (input) =>
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Glib.fromLines(input).map((line) => {
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const [id, at, offset, size] = line.split(' ');
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const offsetPoint = Vector.fromString(`(${offset.slice(0, -1)})`);
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const sizeVector = Vector.fromString(`(${size.replace('x', ',')})`);
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const rectangle = new twodee.Rectangle(offsetPoint, sizeVector);
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return {
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id: id.slice(1),
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rectangle,
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};
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});
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module.exports = {
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'1': (input) => {
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return parse(input)
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.flatMap(({ rectangle }) => rectangle.allPoints().map((pt) => pt.string))
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.frequency()
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.glibValues.filter((v) => v >= 2n).length;
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},
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'2': (input) => {
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const claimed = parse(input)
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.flatMap(({ rectangle }) => rectangle.allPoints().map((pt) => pt.string))
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.frequency();
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return parse(input)
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.filter(({ rectangle }) =>
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rectangle.allPoints().every((pt) => claimed.get(pt.string) === 1n),
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)
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.map((i) => i.id)
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.join();
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},
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};
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