public static long Puzzle2()
{
var memory = new Dictionary <long, long>();
var mask = string.Empty;
foreach (var line in Input.LoadLines("Puzzles.Input.input14.txt"))
{
var match = MaskDecoder.Match(line);
if (match.Success)
{
mask = match.Groups[1].Value;
}
else
{
var result = AssignmentDecoder.Match(line);
var address = long.Parse(result.Groups[1].Value);
var value = long.Parse(result.Groups[2].Value);
foreach (var singleAddress in PermuteAddress(
address | Convert.ToInt64(mask.Replace('X', '0'), 2),
mask
.Reverse()
.Select((c, i) => (c, i))
.Where(t => t.c == 'X')
.Select(t => 0x1L << t.i)
.ToArray()))
{
memory[singleAddress] = value;
}
}
}
return(memory.Values.Sum());
}
public static long Puzzle1()
{
var memory = new Dictionary <long, long>();
var maskOr = default(long);
var maskAnd = default(long);
foreach (var line in Input.LoadLines("Puzzles.Input.input14.txt"))
{
var match = MaskDecoder.Match(line);
if (match.Success)
{
var mask = match.Groups[1].Value;
maskOr = Convert.ToInt64(mask.Replace('X', '0'), 2);
maskAnd = ~Convert.ToInt64(mask.Replace('1', 'X').Replace('0', '1').Replace('X', '0'), 2);
}
else
{
var result = AssignmentDecoder.Match(line);
var address = long.Parse(result.Groups[1].Value);
var value = long.Parse(result.Groups[2].Value);
memory[address] = value & maskAnd | maskOr;
}
}
return(memory.Values.Sum());
}