using System;

namespace test
{
    class Program
    {
        static void Main(string[] args)
        {
            double squareSide = double.Parse(Console.ReadLine());
            double tileW = double.Parse(Console.ReadLine());
            double tileL = double.Parse(Console.ReadLine());
            double benchW = double.Parse(Console.ReadLine());
            double benchL = double.Parse(Console.ReadLine());

            double totalArea = squareSide * squareSide;
            totalArea = totalArea - (benchL * benchW);

            double tileTotalArea = tileL * tileW;

            double numberOfTiles = totalArea / tileTotalArea;
            double totalTime = numberOfTiles * 0.2;

            Console.WriteLine($"Number of tiles needed: {numberOfTiles}");
            Console.WriteLine($"Total time needed: {totalTime}");

        }
    }
}