aoc 1+2

www/statics/aoc/2018/10_solution-2.linq

@@ -0,0 +1,56 @@
+<Query Kind="Program" />
+
+class P { public int XX, YY, VX, VY; }
+
+List<P> input;
+
+void Main()
+{
+	input = File
+		.ReadAllLines(Path.Combine(Path.GetDirectoryName(Util.CurrentQueryPath), @"10_input.txt"))
+		.Where(p => !string.IsNullOrWhiteSpace(p))
+		.Select(l => new P
+		{
+			XX = int.Parse(l.Substring(10, 6).Trim()),
+			YY = int.Parse(l.Substring(18, 6).Trim()),
+			VX = int.Parse(l.Substring(36, 2).Trim()),
+			VY = int.Parse(l.Substring(40, 2).Trim()),
+		})
+		.ToList();
+
+
+
+	for (int i = 1; ; i++)
+	{
+		foreach (var v in input) { v.XX += v.VX; v.YY += v.VY; }
+
+
+		if (input.Any(Alone)) continue;
+		//Print();
+		i.Dump();
+		return;
+	}
+
+}
+
+bool Alone(P p) => !input.Any(i => i != p && Math.Abs(i.XX - p.XX) <= 1 && Math.Abs(i.YY - p.YY) <= 1);
+
+void Print()
+{
+	int minX = input.Min(i => i.XX);
+	int maxX = input.Max(i => i.XX);
+	int minY = input.Min(i => i.YY);
+	int maxY = input.Max(i => i.YY);
+
+	var b = new StringBuilder();
+	for (int y = minY; y <= maxY; y++)
+	{
+		for (int x = minX; x <= maxX; x++)
+		{
+			b.Append(input.Any(i => i.XX == x && i.YY == y) ? '#' : '.');
+		}
+		b.AppendLine();
+	}
+	b.ToString().Dump();
+
+}