static void Main(string[] args)
{
{
int totalFuel1 = 0;
foreach (var line in File.ReadLines("input/1.txt"))
{
int mass = Int32.Parse(line);
int fuel = (mass / 3) - 2;
if (fuel > 0)
{
totalFuel1 += fuel;
}
}
Console.WriteLine($"D1P1 fuel: {totalFuel1}");
}
{
int totalFuel2 = 0;
foreach (var line in File.ReadLines("input/1.txt"))
{
int mass = Int32.Parse(line);
int fuel = (mass / 3) - 2;
while (fuel > 0)
{
totalFuel2 += fuel;
fuel = (fuel / 3) - 2;
}
}
Console.WriteLine($"D1P2 fuel: {totalFuel2}");
}
{
var rawOpCodes = File.ReadAllText("input/2.txt");
var opCodes = rawOpCodes.Split(",").Select(s => Int32.Parse(s)).ToList();
opCodes[1] = 12;
opCodes[2] = 2;
for (int i = 0; opCodes[i] != 99; i += 4)
{
if (opCodes[i] == 1)
{
opCodes[opCodes[i + 3]] = opCodes[opCodes[i + 1]] + opCodes[opCodes[i + 2]];
}
else if (opCodes[i] == 2)
{
opCodes[opCodes[i + 3]] = opCodes[opCodes[i + 1]] * opCodes[opCodes[i + 2]];
}
else if (opCodes[i] != 99)
{
throw new Exception("");
}
}
Console.WriteLine($"D2P1: {opCodes[0]}");
}
{
var rawOpCodes = File.ReadAllText("input/2.txt");
var opCodesSource = rawOpCodes.Split(",").Select(s => Int32.Parse(s)).ToList();
Parallel.ForEach(Enumerable.Range(0, 99), (int noun) =>
{
Parallel.ForEach(Enumerable.Range(0, 99), (int verb) =>
{
List <int> opCodes = new List <int>();
opCodes.AddRange(opCodesSource);
opCodes[1] = noun;
opCodes[2] = verb;
for (int i = 0; opCodes[i] != 99; i += 4)
{
if (opCodes[i] == 1)
{
opCodes[opCodes[i + 3]] = opCodes[opCodes[i + 1]] + opCodes[opCodes[i + 2]];
}
else if (opCodes[i] == 2)
{
opCodes[opCodes[i + 3]] = opCodes[opCodes[i + 1]] * opCodes[opCodes[i + 2]];
}
else if (opCodes[i] != 99)
{
throw new Exception("");
}
}
if (opCodes[0] == 19690720)
{
Console.WriteLine($"D2P2: {100 * noun + verb}");
}
});
});
}
{
var paths = File.ReadAllText("input/3.txt");
var wires = paths.Split(new String[] { "\r\n", "\r", "\n" }, StringSplitOptions.RemoveEmptyEntries).Select(p => p.Split(",").ToList()).ToList();
if (wires.Count() != 2)
{
throw new Exception();
}
var d = new Day3(wires[0], wires[1]);
d.FindClosestIntersection();
d.FindLeastSteps();
}
{
int count = 0;
Parallel.For(246540, 787419, p =>
{
var password = Convert.ToString(p);
if (password.Length != 6)
{
throw new Exception();
}
bool bSuccess = false;
for (int i = 1; i < 6; ++i)
{
if (password[i] == password[i - 1])
{
bSuccess = true;
}
else if (password[i] < password[i - 1])
{
bSuccess = false;
break;
}
}
if (bSuccess)
{
Interlocked.Increment(ref count);
}
});
Console.WriteLine($"D4P1: {count}");
}
{
int count = 0;
Parallel.For(246540, 787419, p =>
{
var password = Convert.ToString(p);
if (password.Length != 6)
{
throw new Exception();
}
bool bIncrement = true;
bool bPair = false;
int pairCount = 1;
for (int i = 1; i < 6; ++i)
{
if (password[i] < password[i - 1])
{
bIncrement = false;
break;
}
if (password[i] == password[i - 1])
{
++pairCount;
}
else
{
if (pairCount == 2)
{
bPair = true;
}
pairCount = 1;
}
}
if (pairCount == 2)
{
bPair = true;
}
if (bPair && bIncrement)
{
Interlocked.Increment(ref count);
}
});
Console.WriteLine($"D4P2: {count}");
}
{
var paths = File.ReadAllText("input/5.txt");
var d = new Day5Part1(paths.Split(",").Select(i => int.Parse(i)).ToList());
int output = d.Execute();
Console.WriteLine($"D5P1: {output}");
}
{
var paths = File.ReadAllText("input/5.txt");
var d = new IntcodeComputer(paths.Split(",").Select(i => int.Parse(i)).ToList());
int output = d.Execute(5);
Console.WriteLine($"D5P1: {output}");
}
}
