#include <iostream>
using namespace std;
short n,m,o,sum;
int main()
{
	cin >> n;
	for (int i = 1;i <= n;i++)
	{
		cin >> m;
		for (int j = 1;j <= m;j++)
		{
			cin >> o;
			sum += o;
		}
		cout << sum << endl << endl;
		sum = 0;
	}
	return 0;
}