using System;
using System.Collections.Generic;
namespace yuki56
{
    class Problem
    {

        public static List<string[]> getinputdata (){

            List<string[]> list_temp = new List<string[]>();
            string strdata = Console.ReadLine ();

            while (strdata!=null) {

                string[] s_temp = strdata.Split (' ');

                list_temp.Add (s_temp);

                strdata = Console.ReadLine ();

            }

            return list_temp;
        }


        public static void Main (string[] args)
        {
            List<string[]> list_result = new List<string[]>();
            list_result = getinputdata ();

            int d = int.Parse(list_result[0][0]);
            int p = int.Parse(list_result[0][1]);

            Console.WriteLine((double)d + (d * p)/100);

        }
    }
}