adventofcode-2016/day10/part2.js

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2016-12-10 22:17:02 +00:00
var input = require("fs").readFileSync("input.txt").toString().replace(/\r/g, "");
var bots = [];
var outputs = [];
input.split("\n").filter((a)=>(a)).forEach((line)=>{
if(line.indexOf("bot") == 0){
var lineData = line.match(/bot ([0-9]+) gives low to ([^ ]+) ([0-9]+) and high to ([^ ]+) ([0-9]+)/);
if(!bots[parseInt(lineData[1])]){
bots[parseInt(lineData[1])] = {};
}
bots[parseInt(lineData[1])].low = [lineData[2], parseInt(lineData[3])];
bots[parseInt(lineData[1])].high = [lineData[4], parseInt(lineData[5])];
}
else{
var lineData = line.match(/value ([0-9]+) goes to bot ([0-9]+)/);
if(!bots[parseInt(lineData[2])]){
bots[parseInt(lineData[2])] = {};
}
if(!bots[parseInt(lineData[2])].values){
bots[parseInt(lineData[2])].values = [];
}
bots[parseInt(lineData[2])].values.push(parseInt(lineData[1]));
}
});
function resolveBot(id){
var bot = bots[id];
bot.values = bot.values.sort((a, b)=>(a - b));
give(bot.low[0], bot.low[1], bot.values[0]);
give(bot.high[0], bot.high[1], bot.values[1]);
bot.values = [];
}
function give(type, target, value){
if(type == "bot"){
if(!bots[target].values) bots[target].values = [];
bots[target].values.push(value);
if(bots[target].values.length == 2){
resolveBot(target);
}
}
else{
outputs[target] = value;
}
}
resolveBot(bots.map((a, i)=>{a.id=i; return a;}).filter((a)=>(a.values)).filter((a)=>(a.values.length == 2))[0].id);
console.log(outputs);
console.log(outputs[0] * outputs[1] * outputs[2]);