#include <iostream>

using namespace std;

int main() {
    int N, M;
    while (cin >> N) {
        for (int i = 0; i < N; i++) {
            cin >> M;
            int val = 0, result = 0;
            for (int j = 0;j < M;j ++){
                cin >> val;
                result += val;
            }
            cout << result << endl;
            if (i != N-1) {
                cout << endl;
            }
        }
    }
    return 0;
}