using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("enter the length of an array:");

        int n=Convert.ToInt32(Console.ReadLine());

        int[] arr=new int[n];

        int sum=0;

        Console.WriteLine(" the elements of an array:");

        for(int i=0;i<arr.Length;i++)

        {

            arr[i]=Convert.ToInt32(Console.ReadLine());

            sum=sum+arr[i];

        }

        Console.WriteLine(sum);

    }

}