59 lines
1.3 KiB
TypeScript
59 lines
1.3 KiB
TypeScript
type Race = {
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time: number;
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distance: number;
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};
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const races: Race[] = [];
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const timeFrom = new Date().getTime();
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// const input = `Time: 47 70 75 66
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// Distance: 282 1079 1147 1062`.split("\n");
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const input = `Time: 47707566
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Distance: 282107911471062`.split("\n");
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// parse input
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const [t, ...rtimes] = input[0].split(" ");
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const times = rtimes.filter((o) => o !== "").map((o) => Number(o));
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const [d, ...rdist] = input[1].split(" ");
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const dist = rdist.filter((o) => o !== "").map((o) => Number(o));
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for (let i = 0; i < times.length; i++) {
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races.push({ time: times[i], distance: dist[i] });
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}
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console.log(races);
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function getSpeed(race: Race, holdTime: number): number {
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return (race.time - holdTime) * holdTime;
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}
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const counts: number[] = [];
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for (const race of races) {
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let from = 1;
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let to = 1;
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for (let i = 0; i < race.time; i++) {
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if (getSpeed(race, i) > race.distance) {
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from = i;
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break;
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}
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}
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for (let i = race.time; i >= 0; i--) {
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if (getSpeed(race, i) > race.distance) {
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to = i;
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break;
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}
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}
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counts.push(to - from + 1);
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}
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let mul = 1;
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for (const count of counts) {
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mul *= count;
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}
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console.log(mul);
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const timeTotal = new Date().getTime() - timeFrom;
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console.log(`Time took: ${timeTotal}ms`);
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