using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Hello{
    public static void Main(){
        long num = Int64.Parse(Console.ReadLine());
        string[] input = Console.ReadLine().Split();
        long ans = 0;
        foreach (var i in input) {
            ans += Int64.Parse(i);
        }
        Console.WriteLine(ans);
    }
}