var input = require("fs").readFileSync("input.txt").toString().split("\n").filter(a=>a);
var timeline = [];
var events = input.sort((a,b)=>{
	var pa = a.match(/\[(\d+-\d+-\d+ (\d+):(\d+))\] (.*)/);
	var pb = b.match(/\[(\d+-\d+-\d+ (\d+):(\d+))\] (.*)/);
	return new Date(pa[1]).getTime() - new Date(pb[1]).getTime();
})

console.log(events);

var guards = [];
var lastGuard = -1;
for(var event of events){
	var p = event.match(/\[(\d+-\d+-\d+ (\d+):(\d+))\] (.*)/);
	var time = (parseInt(p[2])*60) + parseInt(p[3])
	if(p[4].includes("begins shift")){
		lastGuard = parseInt(p[4].match(/\#(\d+)/)[1]);
	}
	else{
		if(!guards[lastGuard]){
			guards[lastGuard] = [];
		}
		guards[lastGuard].push(time);
	}
}

var guardMins = guards.map(times=>{
	var mins = [];
	for(var i = 0; i < times.length; i+=2){
		for(var t = times[i]; t != times[i+1]; t=(t+1)%(24*60)){
			console.log(t);
			if(!mins[t]){
				mins[t] = 0;
			}
			mins[t]++;
		}
	}
	return mins;
});

console.log(guards);
var mostInMin = Math.max.apply(null, guardMins.reduce((a,b)=>(a.concat(b))).filter(a=>a));
console.log(mostInMin);
var bestGuard = guardMins.indexOf(guardMins.filter(a=>(a.indexOf(mostInMin) != -1))[0]);
var bestMin = guardMins[bestGuard].indexOf(mostInMin);
console.log(bestGuard, bestMin, bestGuard * bestMin);