using System;

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter the height in pixels");
            int a = int.Parse(Console.ReadLine());
            Console.WriteLine("Enter the width in pixels");
            int b = int.Parse(Console.ReadLine());
            Console.WriteLine( a * b / 80 + " whole rectangles");
        }
    }
}