import java.util.Scanner;

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