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);
}
}
}


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