import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc= new Scanner(System.in);
		int N = sc.nextInt();
		long sum =0;
		long [] score = new long[N]; //long型のn個の配列を作成
		for(int i=1 ; i<=N ; i++){
			score [N] = sc.nextLong();
			sum += score[N];
			}
		System.out.println(sum);
		}
}