#include <iostream>
using namespace std;
int main()
{
int t, n, a, suma = 0;
cin >> t;
for(int x = 0 ; x < t ; x++)
{
cin >> n;
for(int z = 0 ; z < n ; z++)
{
cin >> a;
suma += a;
}
cout << suma;
}
return 0;
}
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