using System;

class No51
{
    static void Main()
    {
        var shigoto = Double.Parse(Console.ReadLine());
        var deadLine = Int32.Parse(Console.ReadLine());
        for (int i = deadLine; i > 1; --i)
        {
            shigoto -= Math.Floor(shigoto / Math.Pow(i, 2));
        }
        Console.WriteLine(shigoto);
    }
}