#include <iostream>
using namespace std;
int main()
{
    int n,m,a,sum=0;
    while(cin>>n)
    {
        while (n--)
        {
            cin>>m;
            sum=0;
            while (m--)
            {
                cin>>a;
                sum=sum+a;
            }
            if(n>0)
            cout<<sum<<endl<<endl;
            else
            cout<<sum<<endl;
        }
    }

    return 0;

}