39 lines
941 B
JavaScript
39 lines
941 B
JavaScript
|
import * as fs from "fs";
|
||
|
|
|
||
|
|
function load(filename) {
|
||
|
|
return fs.readFileSync(filename, "utf8")
|
||
|
|
.trim()
|
||
|
|
.split("\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
let example = load("example");
|
||
|
|
let input = load("input");
|
||
|
|
|
||
|
|
function countSides(cube, input) {
|
||
|
|
let [x, y, z] = cube.split(",").map(n => parseInt(n));
|
||
|
|
let count = 6;
|
||
|
|
if (input.includes([x+1, y, z].join(","))) count--;
|
||
|
|
if (input.includes([x-1, y, z].join(","))) count--;
|
||
|
|
if (input.includes([x, y+1, z].join(","))) count--;
|
||
|
|
if (input.includes([x, y-1, z].join(","))) count--;
|
||
|
|
if (input.includes([x, y, z+1].join(","))) count--;
|
||
|
|
if (input.includes([x, y, z-1].join(","))) count--;
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
function solve(input) {
|
||
|
|
let count = 0;
|
||
|
|
input.forEach(cube => {
|
||
|
|
count += countSides(cube, input);
|
||
|
|
});
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
const exampleOutput = solve(example);
|
||
|
|
if (exampleOutput !== 64) {
|
||
|
|
console.log("Example failed with " + exampleOutput);
|
||
|
|
process.exit(1); // eslint-disable-line
|
||
|
|
}
|
||
|
|
|
||
|
|
console.log(solve(input));
|