import java.util.Scanner;

class No_9008{
	public static void main(String[] args){
		
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		long sum = 0; 
		
		for(int i = 0;i < n;i++){
		sum += sc.nextLong();
		}
		
		System.out.println(sum);
		}
		}