using System;
using System.Linq;
class Program
{
    static void Main()
    {
        double[] inp = Console.ReadLine().Split().Select(double.Parse).ToArray();
        // 消費税小数点
        const double tax = 0.01;
        // 支払い合計算出
        double ans = inp[0] + (inp[0] * (inp[1] * tax));
        Console.WriteLine(Math.Floor(ans));
    }
}