import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc1= new Scanner(System.in);
		int N = sc1.nextInt();
		int sum =0;
		for(int i=1 ; i<=N ; i++){
			Scanner sc2 = new Scanner(System.in);
			int An = sc2.nextInt();
			sum += An;
			}
		System.out.println(sum);
		}
}