using System;

public class Program

{

    static int NumberOfRows(double width)

    {

        return Convert.ToInt32(Math.Floor(width / 1.2));

    }

    static int NumberOfWorkplacesOnRow(double height)

    {

        height -= 1;

        return Convert.ToInt32(Math.Floor(height / 0.7));

    }

    static void FindNumberOfWorkplaces(double width, double height)

    {

        int NumberOfWorkplaces = NumberOfWorkplacesOnRow(height) * NumberOfRows(width) - 3;

        Console.WriteLine("The workplaces are " + NumberOfWorkplaces + ".");

    }

    static double CheckWidth(double width)

    {

        while(width < 3 || 100 < width)

        {

            Console.WriteLine("The width must be between 3 and 100. Enter it again.");

            Console.Write("w = ");

            width = double.Parse(Console.ReadLine());

        }

        return width;

    }

    static double CheckHeight(double height, double width)

    {

        while(height < 3 || 100 < height || width < height)

        {

            Console.WriteLine("The height must be between 3 and 100 and it must be smaller than the width. Enter it again.");

            Console.Write("h = ");

            height = double.Parse(Console.ReadLine());

        }

        return height;

    }

    public static void Main()

    {

        Console.Write("w = ");

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

        Console.Write("h = ");

        double h = CheckHeight(double.Parse(Console.ReadLine()), w);

        FindNumberOfWorkplaces(w, h);

    }

}