using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace No9009
{
    public class Program
    {
        public static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            List<long> list = new List<long>();

            for(int i=0; i<n; i++)
            {
                list.Add(long.Parse(Console.ReadLine()));
            }

            Console.WriteLine(list.Sum());
        }
    }
}