import java.net.*;
import java.io.*;
import javax.swing.*;
import java.util.regex.*;
import java.util.*;
// Syntax: thread { doSomething(); }
// Short for: new Thread() { public void run() { doSomething(); }}.start();
// similar for daemon {}


public class main {
  public static void main(String[] args) throws Exception {
    String s = loadMainJava();
    
    Pattern regex = Pattern.compile("(thread|daemon)\\s*\\{");
    
    for (int i = 0; i < 100; i++) {
      if (i == 99) System.out.println("Warning: 100 iterations!");
      Matcher matcher = regex.matcher(s);
      if (!matcher.find())
        break;

      int start = matcher.start(), end = matcher.end();
      int endOfBlock = findEndOfBlock(s, end);
      boolean daemon = matcher.group().startsWith("d");
      
      String var = "_t_" + i;
      String code = "Thread " + var + " = new Thread() {\n" +
        "public void run() {\n" +
        "try {\n" +
        s.substring(end, endOfBlock) + "} catch (Exception _e) {\n" +
          "  throw _e instanceof RuntimeException ? (RuntimeException) _e : new RuntimeException(_e); } }\n};\n" +
        (daemon ? var + ".setDaemon(true);\n" : "") +
        var + ".start();";
      s = s.substring(0, start) + code + s.substring(endOfBlock+1);
    }
    
    saveMainJava(s);
  }
  
  // start is the index AFTER the opening bracket
  // returns index OF closing bracket
  static int findEndOfBlock(String s, int start) {
    int level = 1;
    for (int i = start; i < s.length(); i++) {
      if (s.charAt(i) == '{') ++level;
      else if (s.charAt(i) == '}') --level;
      if (level == 0)
        return i;
    }
    return s.length();
  }

  static String mainJava;
  
  static String loadMainJava() throws IOException {
    if (mainJava != null) return mainJava;
    return loadTextFile("input/main.java", "");
  }

  static void saveMainJava(String s) throws IOException {
    if (mainJava != null)
      mainJava = s;
    else
      saveTextFile("output/main.java", s);
  }
  
  static void saveMainJava(List<String> tok) throws IOException {
    saveMainJava(join(tok));
  }


  public static String join(String glue, Iterable<String> strings) {
    StringBuilder buf = new StringBuilder();
    Iterator<String> i = strings.iterator();
    if (i.hasNext()) {
      buf.append(i.next());
      while (i.hasNext())
        buf.append(glue).append(i.next());
    }
    return buf.toString();
  }
  
  public static String join(String glue, String[] strings) {
    return join(glue, Arrays.asList(strings));
  }
  
  public static String join(Iterable<String> strings) {
    return join("", strings);
  }
  
  public static String join(String[] strings) {
    return join("", strings);
  }


  /** 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);
  }
}