import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.InflaterInputStream;
public class Main {
public static void main(String[] argv) throws Exception {
double data[] = { 1.1, 2.2, 3.3, 4.4, 5.5, 6.6 };
DataOutputStream fout = new DataOutputStream(new DeflaterOutputStream(new FileOutputStream(
"data.dat")));
fout.writeInt(data.length);
for (double d : data)
fout.writeDouble(d);
DataInputStream fin = new DataInputStream(new InflaterInputStream(new FileInputStream(
"data.dat")));
int num = fin.readInt();
double avg = 0.0;
double d;
for (int i = 0; i < num; i++) {
d = fin.readDouble();
avg += d;
System.out.print(d + " ");
}
fin.close();
fout.close();
}
}