import java.util.Scanner;

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