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     public   static   void  scaleImage(InputStream imgInputStream,
            OutputStream imgOutputStream,  int  scale)
    {
         try
        {
            Image src  =  javax.imageio.ImageIO.read(imgInputStream);
             int  width  =  ( int ) (src.getWidth( null )  *  scale  /   100.0 );
             int  height  =  ( int ) (src.getHeight( null )  *  scale  /   100.0 );
            BufferedImage bufferedImage  =   new  BufferedImage(width, height,
                    BufferedImage.TYPE_INT_RGB);
             bufferedImage.getGraphics().drawImage(
                    src.getScaledInstance(width, height, Image.SCALE_SMOOTH),
                     0 ,  0 ,  null );
            JPEGImageEncoder encoder  =  JPEGCodec
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import java.util.Arrays;
import java.util.ArrayList;
public class SpanningTree{
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