using System;
using System.Linq;
using System.Collections.Generic;
using static System.Console;

public class hello{
    public static void Main(){
        var n = long.Parse(ReadLine().Trim()); 
        long[] s = new long[n];
        s = ReadLine().Trim().Split(' ').Select(long.Parse).ToArray();
        long sum = 0;
        for(int i=0;i<n;i++){
            sum += s[i];
        }
        WriteLine(sum);
    }
}