using System;

public class Program

{

    public static Double Calculate(string input){

        if(input.Split() is [var initial, var count, var rate])

        {

            return Double.Parse(initial)*Math.Pow(1+Double.Parse(rate)/12/100, int.Parse(count));

        }else return Double.NaN;

    }

    public static void Main()

    {

        Console.WriteLine(Calculate("100000 6 20.5"));

    }

}