import java.util.Scanner;

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

}