#include <iostream>
using namespace std;
int testy;
int n, liczba, suma=0;
int main()
{
cin>>testy;
for (int i=0; i<testy; i++)
{
cin>>n;
for(int x=0;x<n;x++)
{
cin>>liczba;
suma+=liczba;
}
cout<<suma<<endl;
}
return 0;
}
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