import java.util.Scanner;

public class Solution {

	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		Scanner input2 = new Scanner(System.in);
		int amount = input.nextInt();
		String num = input2.nextLine();
		String[] numbers = num.split(" ");
        input.close();
        input2.close();
		int result = 0;
		for(int i = 0; i < amount; ++i){
			int temp = Integer.parseInt(numbers[i]);
			result += temp;
		}
		System.out.println(result);
	}
}