aoc23-11.mts

import { Advent, f, fm, chr, ord } from "advent";
import { Set, Map } from "immutable";

const { compute, computeCheck } = await Advent({ day: 11 });

compute(2, async (input) => {
	const data = input.parse(f.cGrid());

	let rows: number[] = [];

	for (let i = 0; i < data.length; i++) {
		if (data[i].every((c) => c === ".")) {
			// data.splice(i, 0, data[i].map(() => "."));
			// i++;
			rows.push(i);
		}
	}

	let cols: number[] = [];

	for (let j = 0; j < data[0].length; j++) {
		if (data.every((row) => row[j] === ".")) {
			// data.forEach((row) => row.splice(j, 0, "."));
			// j++;
			cols.push(j);
		}
	}

	let coords: [number, number][] = [];

	for (let i = 0; i < data.length; i++) {
		for (let j = 0; j < data[i].length; j++) {
			if (data[i][j] === "#") {
				coords.push([i, j]);
			}
		}
	}

	let ans = 0;

	for (let i = 0; i < coords.length; i++) {
		for (let j = i+1; j < coords.length; j++) {
			ans += Math.abs(coords[i][0] - coords[j][0]) + Math.abs(coords[i][1] - coords[j][1]);
			let rmin = Math.min(coords[i][0], coords[j][0]);
			let rmax = Math.max(coords[i][0], coords[j][0]);
			let cmin = Math.min(coords[i][1], coords[j][1]);
			let cmax = Math.max(coords[i][1], coords[j][1]);

			ans += 999999 * (rows.filter((r) => rmin <= r && r <= rmax).length);
			ans += 999999 * (cols.filter((c) => cmin <= c && c <= cmax).length);
		}
	}

	return ans;
});