using System;

public class Program

{

    public static void Main()

    {

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

        int[] array = new int[n];

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

        {

            Console.Write("a[ " + i + "] = ");

            array[i] = int.Parse(Console.ReadLine());

        }

        Console.WriteLine();

        int sum = 0;

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

        {

            sum += array[i];

        }

        Console.WriteLine("Sum is: " + sum);

    }

}