08. Fish Tank

using System;

namespace Nums1_10
{
    class Program
    {
        static void Main(string[] args)
        {
            double dalzhina = double.Parse(Console.ReadLine());
            double shirochina = double.Parse(Console.ReadLine());
            double visochina = double.Parse(Console.ReadLine());
            double procenti = double.Parse(Console.ReadLine());

            double obemAkvarium = dalzhina * shirochina * visochina; // кубични см
            double obshtoLitri = obemAkvarium * 0.001; //литри при 1л=1дм3
            double procentA = procenti * 0.01;
            double nujniLitri = obshtoLitri * (1 - procentA);

            Console.WriteLine(nujniLitri);





        }
    }
}