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