public static long RunIntCode(List <int> instructions, IntCode intCode)
{
intCode.Restart();
intCode.Resume(instructions);
long val = 0;
while (!intCode.Halted)
{
intCode.Resume();
val = intCode.Compute();
if (!intCode.Halted)
{
Console.Write((char)val);
}
}
return(val);
}
public static void Execute(string filename)
{
string input = File.ReadAllText(filename);
IntCode intCode = new IntCode(input.Split(",").ToList().Select(o => long.Parse(o)).ToArray(), true);
char[,] tractorBeam = new char[50, 50];
int count = 0;
int lastRow = 0;
int previousCountPound = 1;
int previousPoundStart = 0;
for (int i = 0; i < tractorBeam.GetLength(0); i++)
{
int countPound = 0;
bool foundPound = false;
int iterations = i <= 5 ? 10 : previousCountPound * 4;
previousCountPound = 0;
for (int j = previousPoundStart; j < previousPoundStart + iterations && j < tractorBeam.GetLength(1); j++)
{
if (j > 0 && tractorBeam[i, j - 1] == '.' && foundPound)
{
break;
}
intCode.Restart();
intCode.Resume(new List <int>()
{
j, i
});
long x = intCode.Compute();
switch (x)
{
case 0:
tractorBeam[i, j] = '.';
break;
case 1:
if (!foundPound)
{
previousPoundStart = j;
}
previousCountPound++;
tractorBeam[i, j] = '#';
countPound++;
foundPound = true;
count++;
break;
default:
throw new ArgumentException($"Unknown coordinate {i},{j}");
}
}
if (countPound == 0 && i > 5)
{
lastRow = i;
break;
}
}
DrawMap(tractorBeam, lastRow);
Console.WriteLine($"Part One: {count}");
previousPoundStart = 1000;
int row = -1;
int col = -1;
for (int i = 731; i < 10_000; i++)
{
for (int j = previousPoundStart; j < previousPoundStart + 100; j++)
{
intCode.Restart();
intCode.Resume(new List <int>()
{
j, i
});
if (intCode.Compute() == 1)
{
intCode.Restart();
previousPoundStart = j;
intCode.Resume(new List <int>()
{
j + 99, i - 99
}); // 100 rows up, 100 rows to the right
if (intCode.Compute() == 1)
{
row = i - 99;
col = j;
}
break;
}
}
if (row != -1 && col != -1)
{
break;
}
}
Console.WriteLine($"Part Two: {col}*10000+{row} = {col*10_000+row}");
}
