import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int t = in.nextInt();
       
        for(int i = 0; i < t;i++){
            int s = in.nextInt();
            long num = 0;
            for(int j = 0; j < s;j++){
                if(in.hasNext()){
                    num += in.nextInt();
                }
            }
            System.out.println(num);
        }
    }
}