public static void Main()
float nylon = float.Parse(Console.ReadLine());
float nylonSum = 1.5f * nylon;
float paint = 1.1f * float.Parse(Console.ReadLine());
float paintSum = 14.5f * paint;
float thinner = float.Parse(Console.ReadLine());
float thinnerSum = 5f * thinner;
float allMatsSum = nylonSum + paintSum + thinnerSum + 3f + 0.4f;
float builderHours = float.Parse(Console.ReadLine());
float builderSum = builderHours * (0.3f * allMatsSum);
float allSum = builderSum + allMatsSum;
Console.WriteLine(Math.Round(allSum, 2));