import java.util.*;
class Investment
{
    public static void main(String[] args) 
    {
        Scanner input=new Scanner(System.in);
        System.out.print("Enter the value of p: ");
        double p=input.nextDouble();

        System.out.print("Enter the value of r: ");
        double r=input.nextDouble();

        System.out.print("Enter the value of n: ");
        double n=input.nextDouble();

        double v1=1+r;
        double v2=Math.pow(v1,n);
        double v=p*v2;
        Double d=new Double(v);
        System.out.println(d);
    }
}