using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Hello{
    public static void Main(){
        long input = Int64.Parse(Console.ReadLine());
        long ans = 0;
        for (int i = 0; i < input; i++) {
            ans += Int64.Parse(Console.ReadLine());
        }
        Console.WriteLine(ans);
    }
}