public override async ValueTask <string> Solve_1()
{
var flashCout = 0;
for (int i = 0; i < 100; i++)
{
foreach (var item in _input)
{
_input[item.pos]++;
}
List <(System.Drawing.Point pos, char value)> toFlash = new();
do
{
toFlash = _input.Where(x => x.value > '9' && x.value != '+').ToList();
foreach (var item in toFlash)
{
_input[item.pos] = '+';
flashCout++;
var neigh = _input.Get8NeighborsOf(item.pos);
foreach (var n in neigh.Where(x => _input[x] != '+'))
{
_input[n]++;
}
}
} while (toFlash.Any());
foreach (var item in _input.Where(x => x.value == '+'))
{
_input[item.pos] = '0';
}
}
return(flashCout.ToString());
}
private char?Life(Point pos)
{
/*
* If a seat is empty (L) and there are no occupied seats adjacent to it, the seat becomes occupied.
* If a seat is occupied (#) and four or more seats adjacent to it are also occupied, the seat becomes empty.
* Otherwise, the seat's state does not change.
*/
var occupiedN = grid.Get8NeighborsOf(pos).Count(c => grid[c] == '#');
if (grid[pos] == 'L' && occupiedN == 0)
{
return('#');
}
if (grid[pos] == '#' && occupiedN >= 4)
{
return('L');
}
return(null);
}