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export const main = async (lines: string[]): Promise<number | string> => {
let card = 0;
const counts = new Map<number, number>();
lines.forEach((_, i) => counts.set(i, 1));
for (const line of lines) {
const [cardS, numbersS] = line.split(" | ");
const cardNums = cardS
.split(":")
.at(1)!
.split(" ")
.filter((x) => x)
.map((x) => x.trim())
.map((x) => parseInt(x));
const winners = numbersS
.split(" ")
.filter((x) => x)
.map((x) => x.trim())
.map((x) => parseInt(x));
const winnerSet = new Set<number>(winners);
const wins = cardNums.reduce(
(acc, x) => acc + (winnerSet.has(x) ? 1 : 0),
0
);
const currCardCount = counts.get(card) ?? 1;
for (let _ = 0; _ < currCardCount; _++) {
for (let i = 1; i <= Math.min(wins, lines.length - 1); i++) {
const currCount = counts.get(card + i) ?? 1;
counts.set(card + i, currCount + 1);
}
}
card++;
}
console.log(counts);
return Array.from(counts.keys())
.map((x) => counts.get(x)!)
.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").filter((x) => x && x.length);
console.log("=== COMPUTATION ===\n");
const answer = await main(lines);
console.log("\n=== /COMPUTATION ===\n");
console.log("=== ANSWER TO P2 ===");
console.log(answer);
}
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