using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("vyvedi broi chislo");

        int n = int.Parse(Console.ReadLine());

        double sum = 1;

        for (int i=0 ; i<n ; i++)

        {

            Console.WriteLine("vyvedi chislo");

            double num= Double.Parse(Console.ReadLine());

            sum = sum * num ;

        }

        Console.Write(" Proizvedenieto e: ");

        Console.WriteLine(sum);

    } 

}