29 lines
725 B
JavaScript
29 lines
725 B
JavaScript
var input = require("fs").readFileSync("input.txt").toString().replace("\n", "");
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var nums = input.split(" ").map(a=>(parseInt(a)));
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function parseTree(ints){
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var numChildren = ints[0];
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var numMeta = ints[1];
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var children = [];
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var i = 0;
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while(numChildren > 0){
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var childParsed = parseTree(ints.slice(2 + i));
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i += childParsed[1].length;
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children.push(childParsed[0]);
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numChildren--;
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}
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return [{children: children, meta: ints.slice(2+i, 2+i+numMeta)}, ints.slice(0, 2+i+numMeta)]
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}
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function treeMetaTotal(tree){
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var total = 0;
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for(var child of tree.children){
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total += treeMetaTotal(child);
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}
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total += tree.meta.reduce((a,b)=>(a+b));
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return total;
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}
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console.log(treeMetaTotal(parseTree(nums)[0]));
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