Aquarium

using System;
using System.Diagnostics.Metrics;

namespace firstLesson
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int length = int.Parse(Console.ReadLine());
            int width = int.Parse(Console.ReadLine());
            int height = int.Parse(Console.ReadLine());
            double percent = double.Parse(Console.ReadLine());

            double volumeLiters = length * width * height * 0.001;
            double waterPercent = 1 - (percent / 100);

            double result = volumeLiters * waterPercent;

            string formattedResult = result.ToString("F2");

            Console.WriteLine(formattedResult);

        }
    }
}