using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace DataBytes___Lab
{
    class Program
    {
        static void Main(string[] args)
        {
            int number = int.Parse(Console.ReadLine());
            decimal result = 1;

            for (int i = 1; i <= number; i++)
            {
                decimal currentNumber = decimal.Parse(Console.ReadLine());
                result *= currentNumber;                
            }
            Console.WriteLine(result);                       
         }
    }
}