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

namespace ConsoleApp13
{
    class Program
    {
        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());
            Console.ReadLine();


        }
    }
}