using System;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var line1 = Console.ReadLine();
        var count = Convert.ToInt32(line1);

        var total = 0l;
        foreach (var i in Enumerable.Range(0, count))
        {
            total += Convert.ToInt64(Console.ReadLine());
        }
        Console.WriteLine(total.ToString());
    }
}