using System;
using System.Linq;

namespace prob9009
{
    class Program
    {
        static void Main(string[] args)
        {
            int c = int.Parse(Console.ReadLine());
            long[] a = new long[c];
            for (int i = 0; i < c; i++)
            {
                a[i] = long.Parse(Console.ReadLine());
            }
            Console.WriteLine(a.Sum());
        }
    }
}