// NOTA: si raccomanda di usare questo template anche se non lo si capisce completamente.

import java.util.*;
import java.io.*;
import java.lang.*;

public class taxi {

    public static void main(String[] args) throws FileNotFoundException, IOException {
        Locale.setDefault(Locale.US);
        InputStream fin = System.in;
        OutputStream fout = System.out;
        // decommenta le due righe seguenti se vuoi leggere/scrivere da file
        // fin = new FileInputStream("input.txt");
        // fout = new FileOutputStream("output.txt");

        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(fout));
        reader = new BufferedReader(new InputStreamReader(fin));
        scn = new StringTokenizer(reader.readLine());

        int T = Integer.parseInt(next());
        for (int test = 1; test <= T; ++test) {
            int N = Integer.parseInt(next());

            int[] G = new int[N];
            for (int i = 0; i < N; ++i)
                G[i] = Integer.parseInt(next());

            int ris = 0;


            // INSERISCI IL TUO CODICE QUI


            writer.write("Case #");
            writer.write(String.valueOf(test));
            writer.write(": ");
            writer.write(String.valueOf(ris));
            writer.write('\n');
        }

        writer.flush();
    }

    static String next() throws IOException {
        while (!scn.hasMoreTokens()) scn = new StringTokenizer(reader.readLine());
        return scn.nextToken();
    }

    static BufferedReader reader;
    static StringTokenizer scn;
}