using System;

class Program
{

    static void Main()
    {

        long n = long.Parse(Console.ReadLine());
        string s = Console.ReadLine();

        string[] strs = s.Split(" ");

        long sum = 0;
        foreach (string str in strs)
        {
            sum += long.Parse(str);
        }

        Console.WriteLine("{0}", sum);

        
    }
}