#include <bits/stdc++.h>
#define fast() ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define lli long long int
#define endl "\n"

using namespace std;
 
void solve(){
    lli n,sum=0;
    cin >> n;
    lli a[n];
    for(lli i = 0; i < n; i++){
        cin >> a[i];
        sum += a[i];
    }
    cout <<sum<<endl;

}
 
signed main() {
    fast();
    int t;
    cin >> t;
    while (t--)
        solve();
    return 0;
}