import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        // int １つ分を読み込む
        int n = sc.nextInt();

        long l = 0;
        for (int i=0; i<n; i++) {
            l += sc.nextLong();
        }

        System.out.println(l);

        sc.close();
    }
}