84 lines
1.9 KiB
JavaScript
84 lines
1.9 KiB
JavaScript
const fs = require('node:fs/promises');
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let arr = []
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function count_1() {
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return arr.filter(x => x).length;
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}
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function count_2() {
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return arr.reduce((x, y) => x + y);
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}
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async function read_file() {
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const data = await fs.readFile("6-input", {encoding: 'utf8'});
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return data;
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}
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function parse_line(line) {
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let [type, ...rest] = line.split(" ")
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let obj = {type: "", bottom: [], top: []};
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if (type === "toggle") {
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obj.type = "toggle";
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} else {
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obj.type = rest[0];
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rest = rest.slice(1);
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}
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obj.bottom = rest[0].split(",").map(x => parseInt(x));
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obj.top = rest[2].split(",").map(x => parseInt(x));
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return obj
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}
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function execute_inst_1(inst) {
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for (let i = inst.bottom[0]; i <= inst.top[0]; ++i) {
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for (let j = inst.bottom[1]; j <= inst.top[1]; ++j) {
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if (inst.type === "on") {
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arr[(i * 1000) + j] = true;
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} else if (inst.type === "off") {
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arr[(i * 1000) + j] = false;
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} else {
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arr[(i * 1000) + j] = !arr[(i * 1000) + j];
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}
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}
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}
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}
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function execute_inst_2(inst) {
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for (let i = inst.bottom[0]; i <= inst.top[0]; ++i) {
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for (let j = inst.bottom[1]; j <= inst.top[1]; ++j) {
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if (inst.type === "on") {
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arr[(i * 1000) + j] += 1;
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} else if (inst.type === "off") {
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arr[(i * 1000) + j] = Math.max(0, arr[(i * 1000) + j] - 1);
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} else {
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arr[(i * 1000) + j] += 2;
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}
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}
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}
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}
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(async () => {
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let lines = (await read_file()).split(/\n/);
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const insts = lines.map(parse_line);
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for (let i = 0; i < 1000000; ++i) {
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arr.push(false);
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}
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for (let i = 0; i < insts.length; ++i) {
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execute_inst_1(insts[i]);
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}
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console.log("Round 1:", count_1());
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for (let i = 0; i < 1000000; ++i) {
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arr[i] = 0;
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}
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for (let i = 0; i < insts.length; ++i) {
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execute_inst_2(insts[i]);
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}
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console.log("Round 2:", count_2());
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})()
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// Local Variables:
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// compile-command: "node puzzle-6.js"
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// End:
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