54 lines
1.6 KiB
JavaScript
54 lines
1.6 KiB
JavaScript
var input = require("fs").readFileSync("input.txt").toString().replace(/\r/g, "");
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var bots = [];
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var outputs = [];
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input.split("\n").filter((a)=>(a)).forEach((line)=>{
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if(line.indexOf("bot") == 0){
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var lineData = line.match(/bot ([0-9]+) gives low to ([^ ]+) ([0-9]+) and high to ([^ ]+) ([0-9]+)/);
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if(!bots[parseInt(lineData[1])]){
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bots[parseInt(lineData[1])] = {};
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}
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bots[parseInt(lineData[1])].low = [lineData[2], parseInt(lineData[3])];
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bots[parseInt(lineData[1])].high = [lineData[4], parseInt(lineData[5])];
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}
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else{
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var lineData = line.match(/value ([0-9]+) goes to bot ([0-9]+)/);
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if(!bots[parseInt(lineData[2])]){
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bots[parseInt(lineData[2])] = {};
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}
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if(!bots[parseInt(lineData[2])].values){
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bots[parseInt(lineData[2])].values = [];
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}
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bots[parseInt(lineData[2])].values.push(parseInt(lineData[1]));
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}
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});
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function resolveBot(id){
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var bot = bots[id];
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bot.values = bot.values.sort((a, b)=>(a - b));
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var low = bot.values[0];
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var high = bot.values[1];
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if((low == 17) && (high == 61)){
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console.log("Found", id);
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}
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bot.values = [];
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give(bot.low[0], bot.low[1], low);
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give(bot.high[0], bot.high[1], high);
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}
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function give(type, target, value){
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if(type == "bot"){
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if(!bots[target].values) bots[target].values = [];
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bots[target].values.push(value);
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if(bots[target].values.length == 2){
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resolveBot(target);
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}
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}
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else{
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outputs[target] = value;
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}
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}
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resolveBot(bots.map((a, i)=>{a.id=i; return a;}).filter((a)=>(a.values)).filter((a)=>(a.values.length == 2))[0].id);
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