using System;

public class Program

{

    public static void Main()

    {

        double t = 0.2;

        Console.Write("Side of field in metres: ");

        var side = int.Parse(Console.ReadLine());

        var area = side*side;

        Console.Write("Width of one tile: ");

        var w = double.Parse(Console.ReadLine());

        Console.Write("Length of one tile: ");

        var l = double.Parse(Console.ReadLine());

        var tarea = w*l;

        Console.Write("Width of bench: ");

        var m = int.Parse(Console.ReadLine());

        Console.Write("Length of bench: ");

        var o = int.Parse(Console.ReadLine());

        var barea = m*o;

        var narea = area-barea;

        var ntile = narea/tarea;

        var ntime = ntile*t;

        Console.WriteLine("Tiles needed: "+Math.Round(ntile, 2));

        Console.WriteLine("Time needed: "+Math.Round(ntime, 2));

    }

}

//Mihail 8V