import java.util.Scanner;

public class No9008 {
	public static void main(String[]args) {
		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();

		int sum = 0;

		for(int i=0; i<n;i++) {


			sum += sc.nextLong();
		}

		System.out.println(sum);


	}


}