import java.lang.*;
import java.util.*;

public class Solve
{
    public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);
        
        int n = in.nextInt();
        long sum = 0L;
        
        for (int i = 0; i < n; i++)
        {
            sum += in.nextLong();
        }
        
        System.out.println(sum);
    }
}