#include <iostream>
using namespace std;
int main(int argc, const char * argv[])
{
int a,b,sum,n;
cin >>n;
sum=0;
while(n--)
{
cin >>b;
while(b--)
{
cin >>a;
sum+=a;
}
cout <<sum<<endl;
sum=0;
}
return 0;
}