using System;

public class Program
{
	public static void Main(string[] args)
	{
		string s = Console.ReadLine();	
		string[] nums = Console.ReadLine().Split(' ');
		long sum = 0;
		for (int i = 0; i < nums.Length; i++) {
			sum += long.Parse(nums[i]);
		}
		Console.WriteLine(sum + "\n");
	}
}