import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class Lab9
{
  public static void main(String[] args) throws IOException
  {
    {
      // Part A
      long t1 = System.currentTimeMillis();
      FileInputStream fis = new FileInputStream(args[0]);
      FileOutputStream fos = new FileOutputStream(args[1]);
      int b = fis.read();
      while (b != -1)
      {
        fos.write(b);
        b = fis.read();
      }
      fos.flush();
      fos.close();
      fis.close();
      long t2 = System.currentTimeMillis();
      System.out.println("Time = " + (t2 - t1));
    }

    {
      // Part B
      long t1 = System.currentTimeMillis();
      FileInputStream fis = new FileInputStream(args[0]);
      FileOutputStream fos = new FileOutputStream(args[1]);
      byte[] buffer = new byte[64 * 1024];
      int bytes = fis.read(buffer);
      while (bytes != -1)
      {
        fos.write(buffer, 0, bytes);
        bytes = fis.read(buffer);
      }
      fos.flush();
      fos.close();
      fis.close();
      long t2 = System.currentTimeMillis();
      System.out.println("Time = " + (t2 - t1));
    }

    {
      // Part C
      long t1 = System.currentTimeMillis();
      FileInputStream fis = new FileInputStream(args[0]);
      BufferedInputStream bis = new BufferedInputStream(fis);
      FileOutputStream fos = new FileOutputStream(args[1]);
      BufferedOutputStream bos = new BufferedOutputStream(fos);
      int b = bis.read();
      while (b != -1)
      {
        bos.write(b);
        b = bis.read();
      }
      bos.flush();
      bos.close();
      bis.close();
      long t2 = System.currentTimeMillis();
      System.out.println("Time = " + (t2 - t1));
    }
  }
}