using System;
using System.Linq;
using System.Collections.Generic;

namespace test20190423
{
    class Program
    {
        static void Main(string[] args)
        {
            var ss = Console.ReadLine().Split(new String[] { " " }, StringSplitOptions.RemoveEmptyEntries).Select(x => int.Parse(x)).ToArray();
            Console.WriteLine((int)(ss[0] + ss[0] * ss[1] / 100.0));
            Console.ReadLine();
        }
    }
}