import java.util.Scanner;
public class Main {
    public static void main (String[] args) {
        
        Scanner sc = new Scanner(System.in);
        int c = sc.nextInt();
        long a = 0;
        
        for(int i = 0 ; i < c ; i++){
           long ans = sc.nextLong();
           a += ans; 
        }
        System.out.println(a);
    }
}