[Init] Solved solutions

cs/466A.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace _466A
+{
+	class Program
+	{
+		static void Main(string[] args)
+		{
+			int[] a = Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
+			int b = a[0] * a[2];
+			int c = (a[0] % a[1] == 0) ? a[0] / a[1] * a[3] : (a[0] / a[1] + 1) * a[3];
+			int d = a[0] / a[1] * a[3] + (a[0] % a[1]) * a[2];
+			Console.WriteLine(Math.Min(b, Math.Min(c, d)));
+		}
+	}
+}