import javax.imageio.*;

import java.awt.image.*;

import java.awt.*;

import java.security.NoSuchAlgorithmException;

import java.security.MessageDigest;

import java.lang.reflect.*;

import java.net.*;

import java.io.*;

import javax.swing.*;

import java.util.regex.*;

import java.util.List;

import java.util.zip.*;

import java.util.*;

public class main {

  public static void main(String[] args) throws Exception {

    saveMainJava(moveImportsUp(loadMainJava()));

  }

  static String loadMainJava() throws IOException {

    return loadTextFile("input/main.java", "");

  }

  static void saveMainJava(String s) throws IOException {

    saveTextFile("output/main.java", s);

  }

static String moveImportsUp(String s) {

  List<String> l = toLines(s);

  List<String> x = new ArrayList<String>();

  Pattern p = Pattern.compile("^\\s*import\\s");

  for (ListIterator<String> i = l.listIterator(); i.hasNext(); ) {

    String line = i.next();

    if (p.matcher(line).find()) {

      x.add(line);

      i.remove();

    }

  }

  x.addAll(l);

  return fromLines(x);

}

  /** writes safely (to temp file, then rename) */

  public static void saveTextFile(String fileName, String contents) throws IOException {

    File file = new File(fileName);

    File parentFile = file.getParentFile();

    if (parentFile != null)

      parentFile.mkdirs();

    String tempFileName = fileName + "_temp";

    FileOutputStream fileOutputStream = new FileOutputStream(tempFileName);

    OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream, "UTF-8");

    PrintWriter printWriter = new PrintWriter(outputStreamWriter);

    printWriter.print(contents);

    printWriter.close();

    if (file.exists() && !file.delete())

      throw new IOException("Can't delete " + fileName);

    if (!new File(tempFileName).renameTo(file))

      throw new IOException("Can't rename " + tempFileName + " to " + fileName);

  }

  public static String loadTextFile(String fileName, String defaultContents) throws IOException {

    if (!new File(fileName).exists())

      return defaultContents;

    FileInputStream fileInputStream = new FileInputStream(fileName);

    InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");

    return loadTextFile(inputStreamReader);

  }

  public static String loadTextFile(Reader reader) throws IOException {

    StringBuilder builder = new StringBuilder();

    try {

      BufferedReader bufferedReader = new BufferedReader(reader);

      String line;

      while ((line = bufferedReader.readLine()) != null)

        builder.append(line).append('\n');

    } finally {

      reader.close();

    }

    return builder.length() == 0 ? "" : builder.substring(0, builder.length()-1);

  }

 public static List<String> toLines(String s) {

    List<String> lines = new ArrayList<String>();

    int start = 0;

    while (true) {

      int i = toLines_nextLineBreak(s, start);

      if (i < 0) {

        if (s.length() > start) lines.add(s.substring(start));

        break;

      }

      lines.add(s.substring(start, i));

      if (s.charAt(i) == '\r' && i+1 < s.length() && s.charAt(i+1) == '\n')

        i += 2;

      else

        ++i;

      start = i;

    }

    return lines;

  }

  private static int toLines_nextLineBreak(String s, int start) {

    for (int i = start; i < s.length(); i++) {

      char c = s.charAt(i);

      if (c == '\r' || c == '\n')

        return i;

    }

    return -1;

  }

  public static String fromLines(List<String> lines) {

    StringBuilder buf = new StringBuilder();

    for (String line : lines) {

      buf.append(line).append('\n');

    }

    return buf.toString();

  }

}