using System;

namespace yukicoder
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] str = Console.ReadLine().Split(' ');
            double a = double.Parse(str[0]);
            double b = double.Parse(str[1]);
            double c;
            double num = 0;
            b = b * 0.01;
            c = a * b;
            num = Math.Floor(a + c);
            Console.WriteLine("{0}" ,num);
        }
    }
}