21 lines
554 B
JavaScript
21 lines
554 B
JavaScript
const fs = require('fs');
|
|
const input = fs.readFileSync('input.txt', 'utf-8').split('\n')[0].split(' ').map(Number);
|
|
|
|
function parse(arr) {
|
|
if (arr[0] == 0) {
|
|
return ([2 + arr[1], arr.slice(2, 2 + arr[1])]);
|
|
}
|
|
let meta = []
|
|
let pointer = 2;
|
|
for (let i = 0; i < arr[0]; i++) {
|
|
let child = parse(arr.slice(pointer, arr.length));
|
|
pointer += child[0];
|
|
meta = meta.concat(child[1]);
|
|
}
|
|
meta = meta.concat(arr.slice(pointer, pointer + arr[1]))
|
|
return [pointer + arr[1], meta];
|
|
}
|
|
|
|
let v = parse(input)[1];
|
|
console.log(v.reduce((a, b) => a + b));
|