51 lines
1.3 KiB
TypeScript
51 lines
1.3 KiB
TypeScript
export const main = async (lines: string[]): Promise<number | string> => {
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const colors = new Map<string, number>([
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["red", 12],
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["green", 13],
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["blue", 14],
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]);
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const games = lines
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.filter((x) => x)
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.map((line) => line.split(":").at(-1) as string)
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.map((line) => line.split(";").map((x) => x.trim()));
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const unplayableGames = new Set<number>();
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for (let i = 0; i < games.length; i++) {
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const game = games[i];
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for (const play of game) {
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const sets = play.split(",").map((x) => x.trim());
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for (const [num, color] of sets.map((s) => s.split(" "))) {
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const totalColors = colors.get(color) ?? 0;
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if (parseInt(num) > totalColors) {
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unplayableGames.add(i + 1);
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}
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}
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}
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}
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const n = games.length;
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const perfect = (n * (n + 1)) / 2;
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return perfect - Array.from(unplayableGames).reduce((acc, x) => acc + x, 0);
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};
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//
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const isrun = process.argv.length > 1 && process.argv[1] === import.meta.path;
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if (isrun) {
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const file = Bun.file("./problem.txt");
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const text = await file.text();
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const lines = text.split("\n");
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console.log("=== COMPUTATION ===\n");
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const answer = await main(lines);
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console.log("\n=== /COMPUTATION ===\n");
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console.log("=== ANSWER TO P1 ===");
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console.log(answer);
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}
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