import { readFileSync } from "fs"; const t0 = performance.now(); const lines = readFileSync("input.txt") .toString() .split("\n") .filter((e) => e.length > 0); const cards = lines.map((line) => { const id = parseInt(line.match(/^Card\s{1,}(\d{1,3}):/)[1]); const left = line .match(/:\s*((?:\s*\d{1,2})+)\s*\|/)[1] .split(/\s{1,}/) .map((num) => parseInt(num)); const right = line .match(/\|\s*((?:\s*\d{1,2})+)\s*$/)[1] .split(/\s{1,}/) .map((e) => parseInt(e)); const matches = right.filter((a) => left.some((b) => a === b)); return { id, left, right, matches }; }); const points = cards.map((e) => e.matches.length > 0 ? 2 ** (e.matches.length - 1) : 0 ); const sum = points.reduce((a, i) => a + i); console.log(sum); const t1 = performance.now(); console.log(`Runtime: ${t1 - t0}ms`);