using System;
using System.IO;
using System.Linq;

namespace yukicore
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            var tmp = Console.ReadLine()
                .Split(' ').Select(x => decimal.Parse(x))
                .ToArray();
            
            Console.WriteLine((int)(0.01m * tmp[0] * (100 + tmp[1])));
        }

   
    }
}