static void Main(string[] args)
{
var memory = new Dictionary <long, long>();
var mask = new Bitmask();
foreach (string line in File.ReadLines("input.txt"))
{
var data = line.Split(" = ");
if (data[0] == "mask")
{
mask = Bitmask.FromString(data[1]);
}
else
{
var value = int.Parse(data[1]);
var place = int.Parse(new String(data[0].Where(Char.IsDigit).ToArray()));
foreach (var modifiedPlace in mask.Apply(place))
{
memory[modifiedPlace] = value;
}
}
}
long sum = 0L;
foreach (var entry in memory)
{
sum += entry.Value;
}
Console.WriteLine(sum);
}
