using System;

namespace MyApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
            double w = double.Parse(Console.ReadLine());
            double h = double.Parse(Console.ReadLine());
            if (3 <= h)
            {
                if (h <= w)
                {
                    if (w <= 100)
                    {
                        double smW = (w * 100);
                        double smH = ((h * 100) - 100);
                        int placeW = (int)Math.Floor(smW / 120);
                        int placeH = (int)Math.Floor(smH / 70);
                        int allPlace = (placeH * placeW) - 3;

                        Console.WriteLine(allPlace);
                    }

                }
            }
        }
    }
}