import java.io.*;
 
public class Main {
public static void main(String args[]) throws IOException{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
 
    String s, a, b;
    s = in.readLine();
    int suma=0;
    int t = Integer.parseInt(s);
    if ((0 < t) && (t < 100)){
        for (int i=0; i<=t-1; i++){
            a = in.readLine();
            int n = Integer.parseInt(a);
            for (int j=0; j<=n-1; j++ ) {
                b = in.readLine();
                int g = Integer.parseInt(b);
                suma = suma + g;
            }
            System.out.println(suma);
        suma = 0;
        }
    }
}
}

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Mgo1CjEKMgozCjQKNQoyCi0xMDAKMTAw

2
5
1
2
3
4
5
2
-100
100