import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
import java.math.*;
public class main {

static PersistentMap<String, String> urlToText;

public static void main(String[] args) throws Exception {
  urlToText = new PersistentMap("urlToText");
}

static synchronized String html(String uri) {
  uri = dropPrefix("/", uri);
  
  if (empty(uri) || eq(uri, "list")) {
    List<String> list = new ArrayList<String>();
    for (String url : keys(urlToText)) {
      list.add(a("/" + url, "href", pageLink(url)));
    }
    return h3("Pages") + ul(list);
  }
    
  String html = urlToText.get(tlc(uri));
  return or2(html, "?");
}

static synchronized boolean hasURL(String bla) {
  return urlToText.containsKey(tlc(bla));
}

static synchronized String getTextForURL(String bla) {
  return urlToText.get(tlc(bla));
}

// returns previous text if any
static synchronized String setURL(String bla, String text) {
  return urlToText.put(tlc(bla), text);
}


static String a(String noun) {
  if (eq(noun, "")) return "?";
  return ("aeiou".indexOf(noun.charAt(0)) >= 0 ? "an " : "a ") + noun;
}

static String a(String contents, Object... params) {
  return htag("a", contents, params);
}

static <A, B> Set<A> keys(Map<A, B> map) {
  return map.keySet();
}

static Set keys(Object map) {
  return keys((Map) map);
}
static String ul(List<String> list) {
  StringBuilder buf = new StringBuilder();
  for (String s : list)
    buf.append(tag("li", s));
  return tag("ul", buf);
}
static String tlc(String s) {
  return toLowerCase(s);
}
static String h3(String s) {
  return tag("h3", s);
}
static boolean eq(Object a, Object b) {
  if (a == null) return b == null;
  if (a.equals(b)) return true;
  if (a instanceof BigInteger) {
    if (b instanceof Integer) return a.equals(BigInteger.valueOf((Integer) b));
    if (b instanceof Long) return a.equals(BigInteger.valueOf((Long) b));
  }
  return false;
}
static String dropPrefix(String prefix, String s) {
  return s.startsWith(prefix) ? s.substring(l(prefix)) : s;
}
static String or2(String a, String b) {
  return nempty(a) ? a : b;
}
static boolean empty(Collection c) {
  return isEmpty(c);
}

static boolean empty(String s) {
  return isEmpty(s);
}

static boolean empty(Map map) {
  return map == null || map.isEmpty();
}
static String pageLink(String pageName) {
  return "/" + parseSnippetID(getProgramID()) + addPrefix("/", pageName);
}

static String pageLink() {
  return pageLink("");
}

static String htag(String tag, String contents, Object... params) {
  StringBuilder buf = new StringBuilder();
  buf.append("<" + tag);
  for (int i = 0; i < l(params); i += 2) {
    Object val = get(params, i+1);
    if (val != null) {
      String s = str(val);
      if (!empty(s))
        buf.append(" " + get(params, i) + "=" + htmlQuote(s));
    }
  }
  buf.append(">" + contents + "</" + tag + ">");
  return str(buf);
}

// the usual convenience shortcut for StringBuilder instead of string...
static String htag(String tag, StringBuilder contents, Object... params) {
  return htag(tag, str(contents), params);
}

// same with StringBuffer
static String htag(String tag, StringBuffer contents, Object... params) {
  return htag(tag, str(contents), params);
}
static String programID;

static String getProgramID() {
  return programID;
}

// TODO: ask JavaX instead
static String getProgramID(Class c) {
  return or((String) getOpt(c, "programID"), "?");
}

static String getProgramID(Object o) {
  return getProgramID(getMainClass(o));
}
static List<String> toLowerCase(List<String> strings) {
  List<String> x = new ArrayList<String>();
  for (String s : strings)
    x.add(s.toLowerCase());
  return x;
}

static String[] toLowerCase(String[] strings) {
  String[] x = new String[l(strings)];
  for (int i = 0; i < l(strings); i++)
    x[i] = strings[i].toLowerCase();
  return x;
}

static String toLowerCase(String s) {
  return s == null ? "" : s.toLowerCase();
}
static boolean nempty(Collection c) {
  return !isEmpty(c);
}

static boolean nempty(String s) {
  return !isEmpty(s);
}
static boolean isEmpty(Collection c) {
  return c == null || c.isEmpty();
}

static boolean isEmpty(String s) {
  return s == null || s.length() == 0;
}
static int l(Object[] array) {
  return array == null ? 0 : array.length;
}

static int l(byte[] array) {
  return array == null ? 0 : array.length;
}

static int l(int[] array) {
  return array == null ? 0 : array.length;
}

static int l(char[] array) {
  return array == null ? 0 : array.length;
}

static int l(Collection c) {
  return c == null ? 0 : c.size();
}

static int l(Map m) {
  return m == null ? 0 : m.size();
}

static int l(String s) {
  return s == null ? 0 : s.length();
} 


public static long parseSnippetID(String snippetID) {
  long id = Long.parseLong(shortenSnippetID(snippetID));
  if (id == 0) fail("0 is not a snippet ID");
  return id;
}
static String tag(String tag, String contents, Object... params) {
  return htag(tag, contents, params);
}

static String tag(String tag, StringBuilder contents, Object... params) {
  return htag(tag, contents, params);
}

static String tag(String tag, StringBuffer contents, Object... params) {
  return htag(tag, contents, params);
}
static String addPrefix(String prefix, String s) {
  return s.startsWith(prefix) ? s : prefix + s;
}

static String htmlQuote(String s) {
  return "\"" + htmlencode(s) + "\"";
}
// get purpose 1: access a list/array (safer version of x.get(y))

static <A> A get(List<A> l, int idx) {
  return idx >= 0 && idx < l(l) ? l.get(idx) : null;
}

static <A> A get(A[] l, int idx) {
  return idx >= 0 && idx < l(l) ? l[idx] : null;
}

// get purpose 2: access a field by reflection or a map

static Object get(Object o, String field) {
  if (o instanceof Class) return get((Class) o, field);
  
  if (o instanceof Map)
    return ((Map) o).get(field);
    
  if (o.getClass().getName().equals("main$DynamicObject"))
    return call(get_raw(o, "fieldValues"), "get", field);
    
  return get_raw(o, field);
}

static Object get_raw(Object o, String field) {
  try {
    Field f = get_findField(o.getClass(), field);
    f.setAccessible(true);
    return f.get(o);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

static Object get(Class c, String field) {
  try {
    Field f = get_findStaticField(c, field);
    f.setAccessible(true);
    return f.get(null);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

static Field get_findStaticField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field) && (f.getModifiers() & Modifier.STATIC) != 0)
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  throw new RuntimeException("Static field '" + field + "' not found in " + c.getName());
}

static Field get_findField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  throw new RuntimeException("Field '" + field + "' not found in " + c.getName());
}
static String shortenSnippetID(String snippetID) {
  if (snippetID.startsWith("#"))
    snippetID = snippetID.substring(1);
  String httpBlaBla = "http://tinybrain.de/";
  if (snippetID.startsWith(httpBlaBla))
    snippetID = snippetID.substring(httpBlaBla.length());
  return "" + parseLong(snippetID);
}
static Class getMainClass() { try {
 
  return Class.forName("main");

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

static Class getMainClass(Object o) { try {
 
  return (o instanceof Class ? (Class) o : o.getClass()).getClassLoader().loadClass("main");

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
static <A> A or(A a, A b) {
  return a != null ? a : b;
}
static String str(Object o) {
  return String.valueOf(o);
}
  static RuntimeException fail() {
    throw new RuntimeException("fail");
  }
  
  static RuntimeException fail(Object msg) {
    throw new RuntimeException(String.valueOf(msg));
  }
  
  static RuntimeException fail(String msg) {
    throw new RuntimeException(unnull(msg));
  }
    
  static RuntimeException fail(String msg, Object... args) {
    throw new RuntimeException(format(msg, args));
  }
static Object getOpt(Object o, String field) {
  if (o instanceof String) o = getBot ((String) o);
  if (o == null) return null;
  if (o instanceof Class) return getOpt((Class) o, field);
  
  if (o.getClass().getName().equals("main$DynamicObject"))
    return call(getOpt_raw(o, "fieldValues"), "get", field);
  
  if (o instanceof Map) return ((Map) o).get(field);
  
  return getOpt_raw(o, field);
}

static Object getOpt_raw(Object o, String field) {
  try {
    Field f = getOpt_findField(o.getClass(), field);
    if (f == null) return null;
    f.setAccessible(true);
    return f.get(o);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

static Object getOpt(Class c, String field) {
  try {
    Field f = getOpt_findStaticField(c, field);
    if (f == null) return null;
    f.setAccessible(true);
    return f.get(null);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

static Field getOpt_findStaticField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field) && (f.getModifiers() & Modifier.STATIC) != 0)
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  return null;
}

static Field getOpt_findField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  return null;
}


  static String unnull(String s) {
    return s == null ? "" : s;
  }
  
  static List unnull(List l) {
    return l == null ? emptyList() : l;
  }
static Object getBot(String botID) {
  return call(getMainBot(), "getBot", botID);
}

  static String format(String pat, Object... args) {
    return format3(pat, args);
  }

  // automagically encode a whole map (keys+values)
  static Map htmlencode(Map o) {
    HashMap bla = new HashMap();
    for (Object key : keys(o)) {
      Object value = o.get(key);
      bla.put(htmlencode(key), htmlencode(value));
    }
    return bla;
  }

  static String htmlencode(Object o) {
    return htmlencode(string(o));
  }
  
  static String htmlencode(String s) {
    if (s == null) return "";
    StringBuilder out = new StringBuilder(Math.max(16, s.length()));
    for (int i = 0; i < s.length(); i++) {
        char c = s.charAt(i);
        if (c > 127 || c == '"' || c == '<' || c == '>' || c == '&') {
            out.append("&#");
            out.append((int) c);
            out.append(';');
        } else {
            out.append(c);
        }
    }
    return out.toString();
  }
  // varargs assignment fixer for a single string array argument
  static Object call(Object o, String method, String[] arg) {
    return call(o, method, new Object[] {arg});
  }
  
  static Object call(Object o, String method, Object... args) {
    try {
      if (o instanceof Class) {
        Method m = call_findStaticMethod((Class) o, method, args, false);
        m.setAccessible(true);
        return m.invoke(null, args);
      } else {
        Method m = call_findMethod(o, method, args, false);
        m.setAccessible(true);
        return m.invoke(o, args);
      }
    } catch (Exception e) {
      throw e instanceof RuntimeException ? (RuntimeException) e : new RuntimeException(e);
    }
  }

  static Method call_findStaticMethod(Class c, String method, Object[] args, boolean debug) {
    Class _c = c;
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (debug)
          System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
        if (!m.getName().equals(method)) {
          if (debug) System.out.println("Method name mismatch: " + method);
          continue;
        }

        if ((m.getModifiers() & Modifier.STATIC) == 0 || !call_checkArgs(m, args, debug))
          continue;

        return m;
      }
      c = c.getSuperclass();
    }
    throw new RuntimeException("Method '" + method + "' (static) with " + args.length + " parameter(s) not found in " + _c.getName());
  }

  static Method call_findMethod(Object o, String method, Object[] args, boolean debug) {
    Class c = o.getClass();
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (debug)
          System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
        if (m.getName().equals(method) && call_checkArgs(m, args, debug))
          return m;
      }
      c = c.getSuperclass();
    }
    throw new RuntimeException("Method '" + method + "' (non-static) with " + args.length + " parameter(s) not found in " + o.getClass().getName());
  }

  private static boolean call_checkArgs(Method m, Object[] args, boolean debug) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++)
      if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
        if (debug)
          System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
        return false;
      }
    return true;
  }


static long parseLong(String s) {
  return Long.parseLong(s);
}

  static String format3(String pat, Object... args) {
    if (args.length == 0) return pat;
    
    List<String> tok = javaTokPlusPeriod(pat);
    int argidx = 0;
    for (int i = 1; i < tok.size(); i += 2)
      if (tok.get(i).equals("*"))
        tok.set(i, format3_formatArg(argidx < args.length ? args[argidx++] : "null"));
    return join(tok);
  }
  
  static String format3_formatArg(Object arg) {
    if (arg == null) return "null";
    if (arg instanceof String) {
      String s = (String) arg;
      return isIdentifier(s) || isNonNegativeInteger(s) ? s : quote(s);
    }
    if (arg instanceof Integer || arg instanceof Long) return String.valueOf(arg);
    return quote(structure(arg));
  }
  

static String string(Object o) {
  return String.valueOf(o);
}
static Object mainBot;

static Object getMainBot() {
  return mainBot;
}
static List emptyList() {
  return Collections.emptyList();
}
// extended over Class.isInstance() to handle primitive types
static boolean isInstanceX(Class type, Object arg) {
  if (type == boolean.class) return arg instanceof Boolean;
  if (type == int.class) return arg instanceof Integer;
  if (type == long.class) return arg instanceof Long;
  if (type == float.class) return arg instanceof Float;
  if (type == short.class) return arg instanceof Short;
  if (type == char.class) return arg instanceof Character;
  if (type == byte.class) return arg instanceof Byte;
  if (type == double.class) return arg instanceof Double;
  return type.isInstance(arg);
}

static boolean isIdentifier(String s) {
  return isJavaIdentifier(s);
}
  static String quote(String s) {
    if (s == null) return "null";
    return "\"" + s.replace("\\", "\\\\").replace("\"", "\\\"").replace("\r", "\\r").replace("\n", "\\n") + "\"";
  }
  
  static String quote(long l) {
    return quote("" + l);
  }

  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);
  }

static boolean isNonNegativeInteger(String s) {
  return s != null && Pattern.matches("\\d+", s);
}
// "seen" is now default
static String structure(Object o) {
  return structure(o, 0, new IdentityHashMap());
}

static String structure_seen(Object o) {
  return structure(o, 0, new IdentityHashMap());
}

// leave to false, unless unstructure() breaks
static boolean structure_allowShortening = false;
  
static String structure(Object o, int stringSizeLimit, IdentityHashMap<Object, Integer> seen) {
  if (o == null) return "null";
  
  // these are never back-referenced (for readability)
  
  if (o instanceof String)
    return quote(stringSizeLimit != 0 ? shorten((String) o, stringSizeLimit) : (String) o);
    
  if (o instanceof BigInteger)
    return "bigint(" + o + ")";
  
  if (o instanceof Double)
    return "d(" + quote(str(o)) + ")";
    
  if (o instanceof Long)
    return o + "L";
  
  if (seen != null) {
    Integer ref = seen.get(o);
    if (ref != null)
      return "r" + ref;
      
    seen.put(o, seen.size()+1);
  }

  String name = o.getClass().getName();

  StringBuilder buf = new StringBuilder();
  
  if (o instanceof HashSet)
    return "hashset" + structure(new ArrayList((Set) o), stringSizeLimit, seen);

  if (o instanceof TreeSet)
    return "treeset" + structure(new ArrayList((Set) o), stringSizeLimit, seen);
  
  if (o instanceof Collection) {
    for (Object x : (Collection) o) {
      if (buf.length() != 0) buf.append(", ");
      buf.append(structure(x, stringSizeLimit, seen));
    }
    return "[" + buf + "]";
  }
  
  if (o instanceof Map) {
    for (Object e : ((Map) o).entrySet()) {
      if (buf.length() != 0) buf.append(", ");
      buf.append(structure(((Map.Entry) e).getKey(), stringSizeLimit, seen));
      buf.append("=");
      buf.append(structure(((Map.Entry) e).getValue(), stringSizeLimit, seen));
    }
    return (o instanceof HashMap ? "hashmap" : "") + "{" + buf + "}";
  }
  
  if (o.getClass().isArray()) {
    int n = Array.getLength(o);
    for (int i = 0; i < n; i++) {
      if (buf.length() != 0) buf.append(", ");
      buf.append(structure(Array.get(o, i), stringSizeLimit, seen));
    }
    return "array{" + buf + "}";
  }

  if (o instanceof Class)
    return "class(" + quote(((Class) o).getName()) + ")";
    
  if (o instanceof Throwable)
    return "exception(" + quote(((Throwable) o).getMessage()) + ")";
    
  // Need more cases? This should cover all library classes...
  if (name.startsWith("java.") || name.startsWith("javax."))
    return String.valueOf(o);
    
  String shortName = o.getClass().getName().replaceAll("^main\\$", "");
  
  if (shortName.equals("Lisp")) {
    buf.append("l(" + structure(getOpt(o, "head"), stringSizeLimit, seen));
    List args = (List) ( getOpt(o, "args"));
    if (nempty(args))
      for (int i = 0; i < l(args); i++) {
        buf.append(", ");
        Object arg = args.get(i);
        
        // sweet shortening
        if (arg != null && eq(arg.getClass().getName(), "main$Lisp") && isTrue(call(arg, "isEmpty")))
          arg = get(arg, "head");
          
        buf.append(structure(arg, stringSizeLimit, seen));
      }
    buf.append(")");
    return str(buf);
  }
    
  int numFields = 0;
  String fieldName = "";
  if (shortName.equals("DynamicObject")) {
    shortName = (String) get(o, "className");
    Map<String, Object> fieldValues = (Map) get(o, "fieldValues");
    
    for (String _fieldName : fieldValues.keySet()) {
      fieldName = _fieldName;
      Object value = fieldValues.get(fieldName);
      if (value != null) {
        if (buf.length() != 0) buf.append(", ");
        buf.append(fieldName + "=" + structure(value, stringSizeLimit, seen));
      }
      ++numFields;
   }
  } else {
    // regular class
    // TODO: go to superclasses too
    Field[] fields = o.getClass().getDeclaredFields();
    for (Field field : fields) {
      if ((field.getModifiers() & Modifier.STATIC) != 0)
        continue;
      fieldName = field.getName();
      
      // skip outer object reference
      if (fieldName.indexOf("$") >= 0) continue;

      Object value;
      try {
        field.setAccessible(true);
        value = field.get(o);
      } catch (Exception e) {
        value = "?";
      }
      
      // put special cases here...
  
      if (value != null) {
        if (buf.length() != 0) buf.append(", ");
        buf.append(fieldName + "=" + structure(value, stringSizeLimit, seen));
      }
      ++numFields;
    }
  }
  
  String b = buf.toString();
  
  if (numFields == 1 && structure_allowShortening)
    b = b.replaceAll("^" + fieldName + "=", ""); // drop field name if only one
  String s = shortName;
  if (buf.length() != 0)
    s += "(" + b + ")";
  return s;
}
// This is made for NL parsing.
// It's javaTok extended with "..." token, "$n" and "#n" and
// special quotes (which are converted to normal ones).

static List<String> javaTokPlusPeriod(String s) {
  List<String> tok = new ArrayList<String>();
  int l = s.length();
  
  int i = 0;
  while (i < l) {
    int j = i;
    char c; String cc;
    
    // scan for whitespace
    while (j < l) {
      c = s.charAt(j);
      cc = s.substring(j, Math.min(j+2, l));
      if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
        ++j;
      else if (cc.equals("/*")) {
        do ++j; while (j < l && !s.substring(j, Math.min(j+2, l)).equals("*/"));
        j = Math.min(j+2, l);
      } else if (cc.equals("//")) {
        do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
      } else
        break;
    }
    
    tok.add(s.substring(i, j));
    i = j;
    if (i >= l) break;
    c = s.charAt(i);
    cc = s.substring(i, Math.min(i+2, l));

    // scan for non-whitespace
    if (c == '\u201C' || c == '\u201D') c = '"'; // normalize quotes
    if (c == '\'' || c == '"') {
      char opener = c;
      ++j;
      while (j < l) {
        char _c = s.charAt(j);
        if (_c == '\u201C' || _c == '\u201D') _c = '"'; // normalize quotes
        if (_c == opener) {
          ++j;
          break;
        } else if (s.charAt(j) == '\\' && j+1 < l)
          j += 2;
        else
          ++j;
      }
      if (j-1 >= i+1) {
        tok.add(opener + s.substring(i+1, j-1) + opener);
        i = j;
        continue;
      }
    } else if (Character.isJavaIdentifierStart(c))
      do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\'')); // for things like "this one's"
    else if (Character.isDigit(c))
      do ++j; while (j < l && Character.isDigit(s.charAt(j)));
    else if (cc.equals("[[")) {
      do ++j; while (j+1 < l && !s.substring(j, j+2).equals("]]"));
      j = Math.min(j+2, l);
    } else if (cc.equals("[=") && i+2 < l && s.charAt(i+2) == '[') {
      do ++j; while (j+2 < l && !s.substring(j, j+3).equals("]=]"));
      j = Math.min(j+3, l);
    } else if (s.substring(j, Math.min(j+3, l)).equals("..."))
      j += 3;
    else if (c == '$' || c == '#')
      do ++j; while (j < l && Character.isDigit(s.charAt(j)));
    else
      ++j;

    tok.add(s.substring(i, j));
    i = j;
  }
  
  if ((tok.size() % 2) == 0) tok.add("");
  return tok;
}


static String shorten(String s, int max) {
  if (s == null) return "";
  return s.length() <= max ? s : s.substring(0, Math.min(s.length(), max)) + "...";
}
static boolean isTrue(Object o) {
  return booleanValue(o);
}
static boolean isJavaIdentifier(String s) {
  if (s.length() == 0 || !Character.isJavaIdentifierStart(s.charAt(0)))
    return false;
  for (int i = 1; i < s.length(); i++)
    if (!Character.isJavaIdentifierPart(s.charAt(i)))
      return false;
  return true;
}

static boolean booleanValue(Object o) {
  return eq(true, o);
}

// a persistent map using a clever combination of persisting and logging
// (well, only logging as of now)
// Note: don't put in static initializer (programID not set yet)
static class PersistentMap<A, B> extends AbstractMap<A, B> {
  Map<A, B> m = new TreeMap<A, B>();
  File file;
  String id; // unique ID of this map
  
  PersistentMap(String fileName) {
    this(getProgramFile(fileName));
  }
  
  PersistentMap(String progID, String fileName) {
    this(getProgramFile(progID, fileName));
  }
  
  PersistentMap(File file) {
  this.file = file;
    for (String s : scanLog(file)) try { 
      List l = (List) ( unstructure(s));
      Object cmd = l.get(0);
      if (eq(cmd, "add"))
        m.put((A) l.get(1), (B) l.get(2));
      else if (eq(cmd, "remove"))
        m.remove((A) l.get(1));
      else if (eq(cmd, "id"))
        id = (String) l.get(1);
      else
        print("Unknown command in log: " + l.get(0));
    } catch (Throwable __e) { printStackTrace(__e); }
    
    if (id == null) {
      id = makeRandomID(12);
      logQuoted(file, structure(litlist("id", id)));
    }
  }
  
  // just delegates
  
  public int size() {
    return m.size();
  }
  
  public B get(Object a) {
    return m.get(a);
  }
  
  // TODO: calling remove() in the iterator will have unpersisted
  // effects.
  public Set<Map.Entry<A,B>> entrySet() {
    return m.entrySet();
  }
  
  // delegates with logging

  public B put(A a, B b) {
    B c = m.get(a);
    if (neq(b, c)) {
      m.put(a, b);
      logQuoted(file, structure(litlist("add", a, b)));
    }
    return c;
  }
  
  public B remove(Object a) {
    B result = m.remove(a);
    logQuoted(file, structure(litlist("remove", a)));
    return result;
  }
  
  // unique id of this map
  public String id() {
    return id;
  }
}

static boolean neq(Object a, Object b) {
  return !eq(a, b);
}
static void printStackTrace(Throwable e) {
  // we go to system.out now - system.err is nonsense
  print(getStackTrace(e));
}

static void printStackTrace() {
  printStackTrace(new Throwable());
}
static class DynamicObject {
  String className;
  Map<String, Object> fieldValues = new TreeMap<String, Object>();
}

static Object unstructure(String text) {
  return unstructure(text, false);
}

// actually it's now almost the same as jsonDecode :)
static Object unstructure(String text, final boolean allDynamic) {
  final List<String> tok = javaTok(text);
  
  class X {
    int i = 1;

    Object parse() {
      String t = tok.get(i);
      if (t.startsWith("\"")) {
        String s = unquote(tok.get(i));
        i += 2;
        return s;
      }
      if (t.equals("hashset"))
        return parseHashSet();
      if (t.equals("treeset"))
        return parseTreeSet();
      if (t.equals("hashmap"))
        return parseHashMap();
      if (t.equals("{"))
        return parseMap();
      if (t.equals("["))
        return parseList();
      if (t.equals("array"))
        return parseArray();
      if (t.equals("class"))
        return parseClass();
      if (t.equals("bigint"))
        return parseBigInt();
      if (t.equals("d"))
        return parseDouble();
      if (t.equals("l"))
        return parseLisp();
      if (t.equals("null")) {
        i += 2; return null;
      }
      if (t.equals("false")) {
        i += 2; return false;
      }
      if (t.equals("true")) {
        i += 2; return true;
      }
      if (t.equals("-")) {
        t = tok.get(i+2);
        i += 4;
        t = dropSuffix("L", t);
        long l = -Long.parseLong(t);
        return l == (int) l ? (int) l : l;
      }
      if (isInteger(t) || isLongConstant(t)) {
        i += 2;
        t = dropSuffix("L", t);
        long l = Long.parseLong(t);
        return l == (int) l ? (int) l : l;
      }
      if (isJavaIdentifier(t)) {
        Class c = allDynamic ? null : findClass(t);
        DynamicObject dO = null;
        Object o = null;
        if (c != null)
          o = nuObject(c);
        else {
          dO = new DynamicObject();
          dO.className = t;
        }
        i += 2;
        if (i < tok.size() && tok.get(i).equals("(")) {
          consume("(");
          while (!tok.get(i).equals(")")) {
            // It's like parsing a map.
            //Object key = parse();
            //if (tok.get(i).equals(")"))
            //  key = onlyField();
            String key = unquote(tok.get(i));
            i += 2;
            consume("=");
            Object value = parse();
            if (o != null)
              setOpt(o, key, value);
            else
              dO.fieldValues.put(key, value);
            if (tok.get(i).equals(",")) i += 2;
          }
          consume(")");
        }
        return o != null ? o : dO;
      }
      throw new RuntimeException("Unknown token " + (i+1) + ": " + t);
    }
    
    Object parseSet(Set set) {
      set.addAll((List) parseList());
      return set;
    }
    
    Object parseLisp() {
      consume("l");
      consume("(");
      List list = new ArrayList();
      while (!tok.get(i).equals(")")) {
        list.add(parse());
        if (tok.get(i).equals(",")) i += 2;
      }
      consume(")");
      return newObject("main$Lisp", (String) list.get(0), subList(list, 1));
    }
    
    Object parseList() {
      consume("[");
      List list = new ArrayList();
      while (!tok.get(i).equals("]")) {
        list.add(parse());
        if (tok.get(i).equals(",")) i += 2;
      }
      consume("]");
      return list;
    }
    
    Object parseArray() {
      consume("array");
      consume("{");
      List list = new ArrayList();
      while (!tok.get(i).equals("}")) {
        list.add(parse());
        if (tok.get(i).equals(",")) i += 2;
      }
      consume("}");
      return list.toArray();
    }
    
    Object parseClass() {
      consume("class");
      consume("(");
      String name = tok.get(i);
      i += 2;
      consume(")");
      Class c = allDynamic ? null : findClass(name);
      if (c != null) return c;
      DynamicObject dO = new DynamicObject();
      dO.className = "java.lang.Class";
      dO.fieldValues.put("name", name);
      return dO;
    }
    
    Object parseBigInt() {
      consume("bigint");
      consume("(");
      String val = tok.get(i);
      i += 2;
      if (eq(val, "-")) {
        val = "-" + tok.get(i);
        i += 2;
      }
      consume(")");
      return new BigInteger(val);
    }
    
    Object parseDouble() {
      consume("d");
      consume("(");
      String val = unquote(tok.get(i));
      i += 2;
      consume(")");
      return Double.parseDouble(val);
    }
    
    Object parseHashMap() {
      consume("hashmap");
      return parseMap(new HashMap());
    }
    
    Object parseHashSet() {
      consume("hashset");
      return parseSet(new HashSet());
    }
    
    Object parseTreeSet() {
      consume("treeset");
      return parseSet(new TreeSet());
    }
    
    Object parseMap() {
      return parseMap(new TreeMap());
    }
    
    Object parseMap(Map map) {
      consume("{");
      while (!tok.get(i).equals("}")) {
        Object key = unstructure(tok.get(i));
        i += 2;
        consume("=");
        Object value = parse();
        map.put(key, value);
        if (tok.get(i).equals(",")) i += 2;
      }
      consume("}");
      return map;
    }
    
    void consume(String s) {
      if (!tok.get(i).equals(s)) {
        String prevToken = i-2 >= 0 ? tok.get(i-2) : "";
        String nextTokens = join(tok.subList(i, Math.min(i+4, tok.size())));
        fail(quote(s) + " expected: " + prevToken + " " + nextTokens + " (" + i + "/" + tok.size() + ")");
      }
      i += 2;
    }
  }
  
  return new X().parse();
}
static void logQuoted(String logFile, String line) {
  logQuoted(getProgramFile(logFile), line);
}

static void logQuoted(File logFile, String line) {
  appendToFile(logFile, quote(line) + "\n");
}
static <A> ArrayList<A> litlist(A... a) {
  return new ArrayList<A>(Arrays.asList(a));
}
static File getProgramFile(String progID, String fileName) {
  return new File(getProgramDir(progID), fileName);
}

static File getProgramFile(String fileName) {
  return getProgramFile(getProgramID(), fileName);
}

static List<String> scanLog(String progID, String fileName) {
  return scanLog(getProgramFile(progID, fileName));
}

static List<String> scanLog(String fileName) {
  return scanLog(getProgramFile(fileName));
}

static List<String> scanLog(File file) {
  List<String> l = new ArrayList<String>();
  for (String s : toLines(file))
    if (isQuoted(s))
      l.add(unquote(s));
  return l;
}
static String makeRandomID(int length) {
  Random random = new Random();
  char[] id = new char[length];
  for (int i = 0; i < id.length; i++)
    id[i] = (char) ((int) 'a' + random.nextInt(26));
  return new String(id);
}
static volatile StringBuffer local_log = new StringBuffer(); // not redirected
static volatile StringBuffer print_log = local_log; // might be redirected, e.g. to main bot

// in bytes - will cut to half that
static volatile int print_log_max = 1024*1024;
static volatile int local_log_max = 100*1024;

static void print() {
  print("");
}

// slightly overblown signature to return original object...
static <A> A print(A o) {
  String s = String.valueOf(o) + "\n";
  StringBuffer loc = local_log;
  StringBuffer buf = print_log;
  int loc_max = print_log_max;
  if (buf != loc && buf != null) {
    print_append(buf, s, print_log_max);
    loc_max = local_log_max;
  }
  if (loc != null) 
    print_append(loc, s, loc_max);
  System.out.print(s);
  return o;
}

static void print(long l) {
  print(String.valueOf(l));
}

static void print_append(StringBuffer buf, String s, int max) {
  synchronized(buf) {
    buf.append(s);
    max /= 2;
    if (buf.length() > max) try {
      int newLength = max/2;
      int ofs = buf.length()-newLength;
      String newString = buf.substring(ofs);
      buf.setLength(0);
      buf.append("[...] ").append(newString);
    } catch (Exception e) {
      buf.setLength(0);
    }
  }
}

static boolean isInteger(String s) {
  return s != null && Pattern.matches("\\-?\\d+", s);
}
static String getStackTrace(Throwable throwable) {
  StringWriter writer = new StringWriter();
  throwable.printStackTrace(new PrintWriter(writer));
  return writer.toString();
}
 // Let's just generally synchronize this to be safe.
 static synchronized void appendToFile(String path, String s) { try {
 
    new File(path).getParentFile().mkdirs();
    //print("[Logging to " + path + "]");
    Writer writer = new BufferedWriter(new OutputStreamWriter(
      new FileOutputStream(path, true), "UTF-8"));
    writer.write(s);
    writer.close();
  
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
  
  static void appendToFile(File path, String s) {
    appendToFile(path.getPath(), s);
  }

// supports the usual quotings (', ", variable length double brackets)
static boolean isQuoted(String s) {
  if (s.startsWith("'") || s.startsWith("\"")) return true;
  if (!s.startsWith("[")) return false;
  int i = 1;
  while (i < s.length() && s.charAt(i) == '=') ++i;
  return i < s.length() && s.charAt(i) == '[';
  //return Pattern.compile("^\\[=*\\[").matcher(s).find();
}
// currently finds only inner classes of class "main"
// returns null on not found
// this is the simple version that is not case-tolerant
static Class findClass(String name) {
  try {
    return Class.forName("main$" + name);
  } catch (ClassNotFoundException e) {
    return null;
  }
}
static Object nuObject(String className, Object... args) { try {
 
  return nuObject(Class.forName(className), args);

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

static Object nuObject(Class c, Object... args) { try {
 
  Constructor m = nuObject_findConstructor(c, args);
  m.setAccessible(true);
  return m.newInstance(args);

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

static Constructor nuObject_findConstructor(Class c, Object... args) {
  for (Constructor m : c.getDeclaredConstructors()) {
    if (!nuObject_checkArgs(m.getParameterTypes(), args, false))
      continue;
    return m;
  }
  throw new RuntimeException("Constructor with " + args.length + " matching parameter(s) not found in " + c.getName());
}

 static boolean nuObject_checkArgs(Class[] types, Object[] args, boolean debug) {
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++)
      if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
        if (debug)
          System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
        return false;
      }
    return true;
  }
// replacement for class JavaTok
// maybe incomplete, might want to add floating point numbers
// todo also: extended multi-line strings

static List<String> javaTok(String s) {
  List<String> tok = new ArrayList<String>();
  int l = s.length();
  
  int i = 0;
  while (i < l) {
    int j = i;
    char c; String cc;
    
    // scan for whitespace
    while (j < l) {
      c = s.charAt(j);
      cc = s.substring(j, Math.min(j+2, l));
      if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
        ++j;
      else if (cc.equals("/*")) {
        do ++j; while (j < l && !s.substring(j, Math.min(j+2, l)).equals("*/"));
        j = Math.min(j+2, l);
      } else if (cc.equals("//")) {
        do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
      } else
        break;
    }
    
    tok.add(s.substring(i, j));
    i = j;
    if (i >= l) break;
    c = s.charAt(i); // cc is not needed in rest of loop body
    cc = s.substring(i, Math.min(i+2, l));

    // scan for non-whitespace
    if (c == '\'' || c == '"') {
      char opener = c;
      ++j;
      while (j < l) {
        if (s.charAt(j) == opener || s.charAt(j) == '\n') { // end at \n to not propagate unclosed string literal errors
          ++j;
          break;
        } else if (s.charAt(j) == '\\' && j+1 < l)
          j += 2;
        else
          ++j;
      }
    } else if (Character.isJavaIdentifierStart(c))
      do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || "'".indexOf(s.charAt(j)) >= 0)); // for stuff like "don't"
    else if (Character.isDigit(c)) {
      do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      if (j < l && s.charAt(j) == 'L') ++j; // Long constants like 1L
    } else if (cc.equals("[[")) {
      do ++j; while (j+1 < l && !s.substring(j, j+2).equals("]]"));
      j = Math.min(j+2, l);
    } else if (cc.equals("[=") && i+2 < l && s.charAt(i+2) == '[') {
      do ++j; while (j+2 < l && !s.substring(j, j+3).equals("]=]"));
      j = Math.min(j+3, l);
    } else
      ++j;

    tok.add(s.substring(i, j));
    i = j;
  }
  
  if ((tok.size() % 2) == 0) tok.add("");
  return tok;
}

static List<String> javaTok(List<String> tok) {
  return javaTok(join(tok));
}
static double parseDouble(String s) {
  return Double.parseDouble(s);
}
static Object newObject(Class c, Object... args) {
  return nuObject(c, args);
}

static Object newObject(String className, Object... args) {
  return nuObject(className, args);
}

static boolean isLongConstant(String s) {
  if (!s.endsWith("L")) return false;
  s = s.substring(0, l(s)-1);
  return isInteger(s);
}
static List<String> toLines(File f) {
  return toLines(loadTextFile(f));
}

  public static List<String> toLines(String s) {
    List<String> lines = new ArrayList<String>();
    if (s == null) return lines;
    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 unquote(String s) {
    if (s.startsWith("[")) {
      int i = 1;
      while (i < s.length() && s.charAt(i) == '=') ++i;
      if (i < s.length() && s.charAt(i) == '[') {
        String m = s.substring(1, i);
        if (s.endsWith("]" + m + "]"))
          return s.substring(i+1, s.length()-i-1);
      }
    }
    
    if (s.startsWith("\"") /*&& s.endsWith("\"")*/ && s.length() > 1) {
      String st = s.substring(1, s.endsWith("\"") ? s.length()-1 : s.length());
      StringBuilder sb = new StringBuilder(st.length());
  
      for (int i = 0; i < st.length(); i++) {
        char ch = st.charAt(i);
        if (ch == '\\') {
          char nextChar = (i == st.length() - 1) ? '\\' : st
                  .charAt(i + 1);
          // Octal escape?
          if (nextChar >= '0' && nextChar <= '7') {
              String code = "" + nextChar;
              i++;
              if ((i < st.length() - 1) && st.charAt(i + 1) >= '0'
                      && st.charAt(i + 1) <= '7') {
                  code += st.charAt(i + 1);
                  i++;
                  if ((i < st.length() - 1) && st.charAt(i + 1) >= '0'
                          && st.charAt(i + 1) <= '7') {
                      code += st.charAt(i + 1);
                      i++;
                  }
              }
              sb.append((char) Integer.parseInt(code, 8));
              continue;
          }
          switch (nextChar) {
          case '\\':
              ch = '\\';
              break;
          case 'b':
              ch = '\b';
              break;
          case 'f':
              ch = '\f';
              break;
          case 'n':
              ch = '\n';
              break;
          case 'r':
              ch = '\r';
              break;
          case 't':
              ch = '\t';
              break;
          case '\"':
              ch = '\"';
              break;
          case '\'':
              ch = '\'';
              break;
          // Hex Unicode: u????
          case 'u':
              if (i >= st.length() - 5) {
                  ch = 'u';
                  break;
              }
              int code = Integer.parseInt(
                      "" + st.charAt(i + 2) + st.charAt(i + 3)
                              + st.charAt(i + 4) + st.charAt(i + 5), 16);
              sb.append(Character.toChars(code));
              i += 5;
              continue;
          default:
            ch = nextChar; // added by Stefan
          }
          i++;
        }
        sb.append(ch);
      }
      return sb.toString();      
    } else
      return s; // return original
  }
static <A> List<A> subList(List<A> l, int startIndex) {
  return subList(l, startIndex, l(l));
}

static <A> List<A> subList(List<A> l, int startIndex, int endIndex) {
  startIndex = max(0, min(l(l), startIndex));
  endIndex = max(0, min(l(l), endIndex));
  if (startIndex > endIndex) return litlist();
  return l.subList(startIndex, endIndex);
}
static String dropSuffix(String suffix, String s) {
  return s.endsWith(suffix) ? s.substring(0, l(s)-l(suffix)) : s;
}
static File getProgramDir() {
  return programDir();
}

static File getProgramDir(String snippetID) {
  return programDir(snippetID);
}
  static void setOpt(Object o, String field, Object value) {
    if (o instanceof Class) setOpt((Class) o, field, value);
    else try {
      Field f = setOpt_findField(o.getClass(), field);
      if (f != null)
        smartSet(f, o, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  
  static void setOpt(Class c, String field, Object value) {
    try {
      Field f = setOpt_findStaticField(c, field);
      if (f != null)
        smartSet(f, null, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  
  static Field setOpt_findField(Class<?> c, String field) {
    for (Field f : c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    return null;
  }
  
  static Field setOpt_findStaticField(Class<?> c, String field) {
    for (Field f : c.getDeclaredFields())
      if (f.getName().equals(field) && (f.getModifiers() & Modifier.STATIC) != 0)
        return f;
    return null;
  }

static File programDir() {
  return programDir(getProgramID());
}

static File programDir(String snippetID) {
  return new File(javaxDataDir(), formatSnippetID(snippetID));
}

static int min(int a, int b) {
  return Math.min(a, b);
}

static double min(double[] c) {
  double x = Double.MAX_VALUE;
  for (double d : c) x = Math.min(x, d);
  return x;
}

  public static String loadTextFile(String fileName) {
    try {
      return loadTextFile(fileName, null);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
  
  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(File fileName) {
    try {
      return loadTextFile(fileName, null);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }

  public static String loadTextFile(File fileName, String defaultContents) throws IOException {
    try {
      return loadTextFile(fileName.getPath(), defaultContents);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
  
  public static String loadTextFile(Reader reader) throws IOException {
    StringBuilder builder = new StringBuilder();
    try {
      char[] buffer = new char[1024];
      int n;
      while (-1 != (n = reader.read(buffer)))
        builder.append(buffer, 0, n);
        
    } finally {
      reader.close();
    }
    return builder.toString();
  }
static int max(int a, int b) {
  return Math.max(a, b);
}

static long max(int a, long b) {
  return Math.max((long) a, b);
}

static long max(long a, long b) {
  return Math.max(a, b);
}

static double max(int a, double b) {
  return Math.max((double) a, b);
}

static int max(Collection<Integer> c) {
  int x = Integer.MIN_VALUE;
  for (int i : c) x = max(x, i);
  return x;
}

static double max(double[] c) {
  if (c.length == 0) return Double.MIN_VALUE;
  double x = c[0];
  for (int i = 1; i < c.length; i++) x = Math.max(x, c[i]);
  return x;
}

static void smartSet(Field f, Object o, Object value) throws Exception {
  f.setAccessible(true);
  
  // take care of common case (long to int)
  if (f.getType() == int.class && value instanceof Long)
    value = ((Long) value).intValue();
    
  f.set(o, value);
}

static String formatSnippetID(String id) {
  return "#" + parseSnippetID(id);
}

static String formatSnippetID(long id) {
  return "#" + id;
}
static File javaxDataDir_dir; // can be set to work on different base dir

static File javaxDataDir() {
  return javaxDataDir_dir != null ? javaxDataDir_dir : new File(userHome(), "JavaX-Data");
}

static String _userHome;
static String userHome() {
  if (_userHome == null) {
    if (isAndroid())
      _userHome = "/storage/sdcard0/";
    else
      _userHome = System.getProperty("user.home");
    //System.out.println("userHome: " + _userHome);
  }
  return _userHome;
}


static boolean isAndroid() { return System.getProperty("java.vendor").toLowerCase().indexOf("android") >= 0; }
}