import java.io.*;
import mp.Op3;
public class ch0215
{    public static void main(String[] args) throws IOException
     {
     int f=Op3.intValue( );
     System.out.println("2*f="+2*f);
     float ff=Op3.floatValue( );
     System.out.println("2*ff="+2*ff);
     String s=Op3.stringValue( );
     System.out.println("Äã¼üÈëµÄ×Ö·û´®ÊÇ£º"+s);
   }
  }
