#include <iostream>
using namespace std;

void loop_sum() 
{
    int N;
    cin >> N;
    long int a[N], sum = 0;
    for (int i = 0; i < N; i++) 
    {
        cin >> a[i];
        sum += a[i];
    }
    cout << sum << endl;
}

int main() {
    int times;
    cin >> times;
    while (times > 0) 
    {
        loop_sum();
        times--;
    }
    return 0;
}