import java.io.*;
import java.nio.*;
import java.nio.channels.*;

public class X2 {
  public static void main (String [] args) throws Exception {
    FileChannel in = new FileInputStream(args[0]).getChannel();
    new FileOutputStream(args[1]).getChannel().write(in.map(
      FileChannel.MapMode.READ_ONLY, 0, in.size()));
  }
}