import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		int N = 0;
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		long ans = 0;

		for (int i = 0; i < n; i++) {
			long m = sc.nextLong();
			ans += m;
		}
		System.out.println(ans);
	}
}