import java.awt.image.*;
import javax.imageio.ImageIO;
import java.io.*;

class j2b {

static public void main(String[] args){
  try {BufferedImage I = ImageIO.read(new File(args[0]));
    WritableRaster wr = I.getRaster();
    if(0<1) b2j.swr(wr);
    try {
      DataOutputStream os = new DataOutputStream(new FileOutputStream(args[1]));
      int X = I.getWidth(), Y = I.getHeight();
      os.writeInt(X); os.writeInt(Y);
      int pn = wr.getNumDataElements();
      for(int i = 0; i<Y; ++i) {
        byte[] id = (byte[])wr.getDataElements(0, i, X, 1, null);
        if(pn==4) for(int w=0;w<X;++w) for(int x=0;x<3;++x) id[3*w+x]=id[4*w+x];
        if(pn==1) {byte[]n = new byte[3*X]; for(int w=0;w<X;++w) 
            for(int x=0;x<3;++x) n[3*w+x] = id[w]; id = n;}
        os.write(id, 0, 3*X);}}
    catch (IOException e){System.err.println("File not written.");}}
  catch (IOException e) {System.err.println("File not read.");}}}

class b2j {

static public void main(String[] args){
  try {
    DataInputStream is = new DataInputStream(new FileInputStream(args[0]));
    int X = is.readInt(), Y = is.readInt();
    System.out.println("X="+X+", Y="+Y);
    BufferedImage I = new BufferedImage(X, Y, BufferedImage.TYPE_3BYTE_BGR);
    WritableRaster wr = I.getRaster();
    if(0<0) swr(wr);
    byte[] bc = new byte[3*X];
    for(int i = 0; i<Y; ++i) {is.read(bc); wr.setDataElements(0, i, X, 1, bc);}
    try {ImageIO.write(I, "jpg", new File(args[1]));}
    catch (IOException e) {System.err.println("image not saved.");}}
  catch (IOException e) {System.err.println("File "+args[0]+" not read.");}}

static public void swr(WritableRaster wr) {System.err.println(
     "bounds="+wr.getBounds()
    +", getNumDataElements="+wr.getNumDataElements()
    +", getTransferType="+wr.getTransferType());}}