// Written without an IDE!

import java.util.*;

import java.io.*;

public class main {

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

    String s = readTextFile("input/main.java", "");

    System.out.println(splitAtBrackets(s));

  }

  static List<String> splitAtBrackets(String s) {

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

    int lastI = 0;

    for (int i = 0; i < s.length(); i++) {

      boolean a = i == 0 || "{}()[]".indexOf(s.charAt(i-1)) >= 0;

      boolean b = "{}()[]".indexOf(s.charAt(i)) >= 0;

      if (a || b) {

        // split

        if (lastI != i)

          list.add(s.substring(lastI, i));

        lastI = i;

      }

    }

    if (s.length() > lastI)

      list.add(s.substring(lastI));

    // done

    return list;

  }

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

    if (!new java.io.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);

  }

}