static void Main(string[] args)
{
var contents = System.IO.File.ReadAllLines("input.txt");
List <event_record> records = new List <event_record>();
int guard_on_duty = 0;
for (int i = 0; i < contents.Length; i++)
{
string currow = contents[i];
if (currow.Contains("#"))
{
guard_on_duty = Int32.Parse(currow.Split(" ")[3].Replace("#", ""));
}
else
{
guard_on_duty = 0;
}
event_record record = new event_record()
{
timestamp = pull_datetime_from_record(currow),
index = i,
begin_shift = currow.Contains("#"),
fall_asleep = currow.Contains("falls"),
wake_up = currow.Contains("wakes"),
guard_id = guard_on_duty
};
records.Add(record);
}
int guard_last_seen = 0;
foreach (var record in records.OrderBy(e => e.timestamp))
{
if (record.guard_id != 0)
{
guard_last_seen = record.guard_id;
}
else
{
record.guard_id = guard_last_seen;
}
}
Part1(records);
}
public static void Part1(List <event_record> records)
{
List <int> guards_list = records.Select(e => e.guard_id).Distinct().ToList();
List <guard> guards = new List <guard>();
foreach (var item in guards_list)
{
guard guard = new guard();
guard.id = item;
List <event_record> specific_list = records.Where(e => e.guard_id == item && e.begin_shift == false).OrderBy(e => e.timestamp).ToList();
for (int i = 0; i < specific_list.Count(); i = i + 2)
{
event_record currow = specific_list[i];
event_record next_row = specific_list[i + 1];
TimeSpan span = next_row.timestamp.Subtract(currow.timestamp);
guard.total_sleep += span.Minutes;
DateTime start = currow.timestamp;
while (start < next_row.timestamp)
{
guard.asleep_minute.Add(start.Minute);
start = start.AddMinutes(1);
}
}
guards.Add(guard);
}
Console.WriteLine("Sleepiest Guard");
Console.WriteLine(guards.OrderByDescending(e => e.total_sleep).First().id);
Console.WriteLine("Sleepiest Minute");
var most = (from i in guards.First(e => e.id == guards.OrderByDescending(f => f.total_sleep).First().id).asleep_minute
group i by i into grp
orderby grp.Count() descending
select grp.Key).First();
Console.WriteLine(most);
Console.WriteLine("Multiplied");
Console.WriteLine(guards.OrderByDescending(e => e.total_sleep).First().id *most);
Part2(guards);
}