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 java.util.concurrent.locks.*;
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.*;

class main {

  static boolean greetingDetector(String s) {
    return mmo2_match(collapse("hi!, how!, how're, how's, what, what's, hello!, ^good!"), collapse(s));
  }

  static boolean mmo2_match(MMOPattern pattern, String s) {
    return mmo2_match(pattern, s, false, false);
  }

  static boolean mmo2_match(MMOPattern pattern, String s, boolean startOfLine, boolean endOfLine) {
    if (pattern == null)
      return false;
    String s2 = trim(s);
    if (pattern instanceof MMOPattern.StartOfLine)
      return mmo2_match(((MMOPattern.StartOfLine) pattern).p, s2, true, endOfLine);
    if (pattern instanceof MMOPattern.EndOfLine)
      return mmo2_match(((MMOPattern.EndOfLine) pattern).p, s2, startOfLine, true);
    if (pattern instanceof MMOPattern.Phrase) {
      String p = ((MMOPattern.Phrase) pattern).phrase;
      if (((MMOPattern.Phrase) pattern).quoted)
        return cicWithSmartWordBoundary(s2, p);
      if (startsWith(p, "#"))
        return eqic(p, s2);
      return match3_startOrEndOfLine(p, s2, startOfLine, endOfLine);
    }
    if (pattern instanceof MMOPattern.And)
      return all(((MMOPattern.And) pattern).l, pat -> mmo2_match(pat, s2, startOfLine, endOfLine));
    if (pattern instanceof MMOPattern.Or)
      return any(((MMOPattern.Or) pattern).l, pat -> mmo2_match(pat, s2, startOfLine, endOfLine));
    if (pattern instanceof MMOPattern.Not)
      return !mmo2_match(((MMOPattern.Not) pattern).p, s2, startOfLine, endOfLine);
    throw fail("what. " + pattern);
  }

  static boolean mmo2_match(String pattern, String s) {
    return mmo2_match(mmo2_parsePattern(pattern), s);
  }

  static String collapse(String s) {
    return collapseWord(s);
  }

  static String trim(String s) {
    return s == null ? null : s.trim();
  }

  static String trim(StringBuilder buf) {
    return buf.toString().trim();
  }

  static String trim(StringBuffer buf) {
    return buf.toString().trim();
  }

  static boolean cicWithSmartWordBoundary(String a, String b) {
    return containsRegexpIC(a, phraseToRegExp(b));
  }

  static boolean startsWith(String a, String b) {
    return a != null && a.startsWith(unnull(b));
  }

  static boolean startsWith(String a, char c) {
    return nemptyString(a) && a.charAt(0) == c;
  }

  static boolean startsWith(String a, String b, Matches m) {
    if (!startsWith(a, b))
      return false;
    m.m = new String[] { substring(a, strL(b)) };
    return true;
  }

  static boolean startsWith(List a, List b) {
    if (a == null || listL(b) > listL(a))
      return false;
    for (int i = 0; i < listL(b); i++) if (neq(a.get(i), b.get(i)))
      return false;
    return true;
  }

  static boolean eqic(String a, String b) {
    if ((a == null) != (b == null))
      return false;
    if (a == null)
      return true;
    return a.equalsIgnoreCase(b);
  }

  static boolean eqic(char a, char b) {
    if (a == b)
      return true;
    char u1 = Character.toUpperCase(a);
    char u2 = Character.toUpperCase(b);
    if (u1 == u2)
      return true;
    return Character.toLowerCase(u1) == Character.toLowerCase(u2);
  }

  static boolean match3_startOrEndOfLine(String pat, String s, boolean startOfLine, boolean endOfLine) {
    if (startOfLine)
      return endOfLine ? match3(pat, s) : matchStart(pat, s);
    else
      return endOfLine ? matchEnd(pat, s) : find3(pat, s);
  }

  static boolean all(Object pred, Iterable l) {
    if (l != null)
      for (Object o : l) if (!isTrue(callF(pred, o)))
        return false;
    return true;
  }

  static <A> boolean all(Iterable<A> l, IF1<A, Boolean> f) {
    if (l != null)
      for (A a : l) if (!f.get(a))
        return false;
    return true;
  }

  static <A> boolean all(IF1<A, Boolean> f, Iterable<A> l) {
    return all(l, f);
  }

  static <A> boolean any(Object pred, Iterable<A> l) {
    if (l != null)
      for (A a : l) if (isTrue(callF(pred, a)))
        return true;
    return false;
  }

  static <A> boolean any(IF1<A, Boolean> pred, Iterable<A> l) {
    return any((Object) pred, l);
  }

  static <A> boolean any(Iterable<A> l, IF1<A, Boolean> pred) {
    return any(pred, l);
  }

  static RuntimeException fail() {
    throw new RuntimeException("fail");
  }

  static RuntimeException fail(Throwable e) {
    throw asRuntimeException(e);
  }

  static RuntimeException fail(Object msg) {
    throw new RuntimeException(String.valueOf(msg));
  }

  static RuntimeException fail(String msg) {
    throw new RuntimeException(msg == null ? "" : msg);
  }

  static RuntimeException fail(String msg, Throwable innerException) {
    throw new RuntimeException(msg, innerException);
  }

  static MMOPattern mmo2_parsePattern(String s) {
    s = trim(tok_deRoundBracket(trim(s)));
    List<String> tok = javaTokWithBrackets(s);
    List<String> l = tok_splitAtComma(tok);
    if (l(l) > 1)
      return new MMOPattern.Or(lambdaMap(__21 -> mmo2_parsePattern(__21), l));
    l = tok_splitAtPlus(tok);
    if (l(l) > 1)
      return new MMOPattern.And(lambdaMap(__22 -> mmo2_parsePattern(__22), l));
    if (startsWith(s, "!"))
      return new MMOPattern.Not(mmo2_parsePattern(dropFirst(s)));
    if (startsWith(s, "^"))
      return new MMOPattern.StartOfLine(mmo2_parsePattern(dropFirst(s)));
    if (endsWith(s, "$"))
      return new MMOPattern.EndOfLine(mmo2_parsePattern(dropLast(s)));
    l = tok_splitAtAsterisk(tok);
    if (l(l) == 2)
      return new MMOPattern.Weighted(parseDouble(second(l)), mmo2_parsePattern(first(l)));
    return new MMOPattern.Phrase(unquote(s), isQuoted(s));
  }

  static String collapseWord(String s) {
    if (s == null)
      return "";
    StringBuilder buf = new StringBuilder();
    for (int i = 0; i < l(s); i++) if (i == 0 || !charactersEqualIC(s.charAt(i), s.charAt(i - 1)))
      buf.append(s.charAt(i));
    return buf.toString();
  }

  static boolean containsRegexpIC(String s, String pat) {
    return compileRegexpIC(pat).matcher(s).find();
  }

  static String phraseToRegExp(String b) {
    return (startsWithLetterOrDigit(b) ? "\\b" : "") + regexpQuote(b) + (endsWithLetterOrDigit(b) ? "\\b" : "");
  }

  static String unnull(String s) {
    return s == null ? "" : s;
  }

  static <A> Collection<A> unnull(Collection<A> l) {
    return l == null ? emptyList() : l;
  }

  static <A> List<A> unnull(List<A> l) {
    return l == null ? emptyList() : l;
  }

  static int[] unnull(int[] l) {
    return l == null ? emptyIntArray() : l;
  }

  static char[] unnull(char[] l) {
    return l == null ? emptyCharArray() : l;
  }

  static double[] unnull(double[] l) {
    return l == null ? emptyDoubleArray() : l;
  }

  static <A, B> Map<A, B> unnull(Map<A, B> l) {
    return l == null ? emptyMap() : l;
  }

  static <A> Iterable<A> unnull(Iterable<A> i) {
    return i == null ? emptyList() : i;
  }

  static <A> A[] unnull(A[] a) {
    return a == null ? (A[]) emptyObjectArray() : a;
  }

  static BitSet unnull(BitSet b) {
    return b == null ? new BitSet() : b;
  }

  static <A, B> Pair<A, B> unnull(Pair<A, B> p) {
    return p != null ? p : new Pair(null, null);
  }

  static long unnull(Long l) {
    return l == null ? 0L : l;
  }

  static boolean nemptyString(String s) {
    return s != null && s.length() > 0;
  }

  static String substring(String s, int x) {
    return substring(s, x, strL(s));
  }

  static String substring(String s, int x, int y) {
    if (s == null)
      return null;
    if (x < 0)
      x = 0;
    int n = s.length();
    if (y < x)
      y = x;
    if (y > n)
      y = n;
    if (x >= y)
      return "";
    return s.substring(x, y);
  }

  static String substring(String s, CharSequence l) {
    return substring(s, l(l));
  }

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

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

  static boolean neq(Object a, Object b) {
    return !eq(a, b);
  }

  static boolean eq(Object a, Object b) {
    return a == b || a != null && b != null && a.equals(b);
  }

  static String asString(Object o) {
    return o == null ? null : o.toString();
  }

  static boolean match3(String pat, String s) {
    return match3(pat, s, null);
  }

  static boolean match3(String pat, String s, Matches matches) {
    if (pat == null || s == null)
      return false;
    return match3(pat, parse3_cachedInput(s), matches);
  }

  static boolean match3(String pat, List<String> toks, Matches matches) {
    List<String> tokpat = parse3_cachedPattern(pat);
    return match3(tokpat, toks, matches);
  }

  static boolean match3(List<String> tokpat, List<String> toks, Matches matches) {
    String[] m = match2(tokpat, toks);
    if (m == null)
      return false;
    if (matches != null)
      matches.m = m;
    return true;
  }

  static boolean matchStart(String pat, String s) {
    return matchStart(pat, s, null);
  }

  static boolean matchStart(String pat, String s, Matches matches) {
    if (s == null)
      return false;
    return matchStart(pat, parse3_cachedInput(s), matches);
  }

  static boolean matchStart(String pat, List<String> toks, Matches matches) {
    if (toks == null)
      return false;
    List<String> tokpat = parse3_cachedPattern(pat);
    if (toks.size() < tokpat.size())
      return false;
    String[] m = match2(tokpat, toks.subList(0, tokpat.size()));
    if (m == null)
      return false;
    if (matches != null) {
      matches.m = new String[m.length + 1];
      arraycopy(m, matches.m);
      matches.m[m.length] = joinSubList(toks, tokpat.size(), toks.size());
    }
    return true;
  }

  static boolean matchEnd(String pat, String s) {
    return matchEnd(pat, s, null);
  }

  static boolean matchEnd(String pat, String s, Matches matches) {
    if (s == null)
      return false;
    List<String> tokpat = parse3(pat), toks = parse3(s);
    if (toks.size() < tokpat.size())
      return false;
    String[] m = match2(tokpat, takeLast(l(tokpat), toks));
    if (m == null)
      return false;
    if (matches != null) {
      matches.m = new String[m.length + 1];
      arraycopy(m, matches.m);
      matches.m[m.length] = join(dropLast(l(tokpat), toks));
    }
    return true;
  }

  static boolean find3(String pat, String s) {
    return find3(pat, s, null);
  }

  static boolean find3(String pat, String s, Matches matches) {
    return find3(pat, parse3_cachedInput(s), matches);
  }

  static boolean find3(String pat, List<String> toks, Matches matches) {
    List<String> tokpat = parse3_cachedPattern(pat);
    String[] m = find2(tokpat, toks);
    if (m == null)
      return false;
    if (matches != null)
      matches.m = m;
    return true;
  }

  static boolean isTrue(Object o) {
    if (o instanceof Boolean)
      return ((Boolean) o).booleanValue();
    if (o == null)
      return false;
    if (o instanceof ThreadLocal)
      return isTrue(((ThreadLocal) o).get());
    throw fail(getClassName(o));
  }

  static Map<Class, ArrayList<Method>> callF_cache = newDangerousWeakHashMap();

  static <A, B> B callF(F1<A, B> f, A a) {
    return f == null ? null : f.get(a);
  }

  static <A, B> B callF(IF1<A, B> f, A a) {
    return f == null ? null : f.get(a);
  }

  static <A, B, C> C callF(IF2<A, B, C> f, A a, B b) {
    return f == null ? null : f.get(a, b);
  }

  static <A> void callF(VF1<A> f, A a) {
    if (f != null)
      f.get(a);
  }

  static Object callF(Object f, Object... args) {
    if (f instanceof String)
      return callMCWithVarArgs((String) f, args);
    return safeCallF(f, args);
  }

  static Object safeCallF(Object f, Object... args) {
    if (f instanceof Runnable) {
      ((Runnable) f).run();
      return null;
    }
    if (f == null)
      return null;
    Class c = f.getClass();
    ArrayList<Method> methods;
    synchronized (callF_cache) {
      methods = callF_cache.get(c);
      if (methods == null)
        methods = callF_makeCache(c);
    }
    int n = l(methods);
    if (n == 0) {
      throw fail("No get method in " + getClassName(c));
    }
    if (n == 1)
      return invokeMethod(methods.get(0), f, args);
    for (int i = 0; i < n; i++) {
      Method m = methods.get(i);
      if (call_checkArgs(m, args, false))
        return invokeMethod(m, f, args);
    }
    throw fail("No matching get method in " + getClassName(c));
  }

  static ArrayList<Method> callF_makeCache(Class c) {
    ArrayList<Method> l = new ArrayList();
    Class _c = c;
    do {
      for (Method m : _c.getDeclaredMethods()) if (m.getName().equals("get")) {
        makeAccessible(m);
        l.add(m);
      }
      if (!l.isEmpty())
        break;
      _c = _c.getSuperclass();
    } while (_c != null);
    callF_cache.put(c, l);
    return l;
  }

  static RuntimeException asRuntimeException(Throwable t) {
    if (t instanceof Error)
      _handleError((Error) t);
    return t instanceof RuntimeException ? (RuntimeException) t : new RuntimeException(t);
  }

  static String tok_deRoundBracket(String s) {
    return tok_isRoundBracketed(s) ? join(dropFirstThreeAndLastThree(javaTok(s))) : s;
  }

  static List<String> javaTokWithBrackets(String s) {
    return javaTokPlusBrackets(s);
  }

  static List<String> tok_splitAtComma(String s) {
    return tok_splitAtComma(javaTok(s));
  }

  static List<String> tok_splitAtComma(List<String> tok) {
    List<String> out = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      int j = smartIndexOf(tok, ",", i);
      out.add(joinSubList(tok, i + 1, j - 1));
      i = j;
    }
    return out;
  }

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

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

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

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

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

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

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

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

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

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

  static int l(Iterator i) {
    return iteratorCount_int_close(i);
  }

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

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

  static long l(File f) {
    return f == null ? 0 : f.length();
  }

  static int l(Object o) {
    return o == null ? 0 : o instanceof String ? l((String) o) : o instanceof Map ? l((Map) o) : o instanceof Collection ? l((Collection) o) : o instanceof Object[] ? l((Object[]) o) : o instanceof boolean[] ? l((boolean[]) o) : o instanceof byte[] ? l((byte[]) o) : o instanceof char[] ? l((char[]) o) : o instanceof short[] ? l((short[]) o) : o instanceof int[] ? l((int[]) o) : o instanceof float[] ? l((float[]) o) : o instanceof double[] ? l((double[]) o) : o instanceof long[] ? l((long[]) o) : (Integer) call(o, "size");
  }

  static <A, B> List<B> lambdaMap(IF1<A, B> f, Iterable<A> l) {
    return map(l, f);
  }

  static <A, B> List<B> lambdaMap(IF1<A, B> f, A[] l) {
    return map(l, f);
  }

  static List<String> tok_splitAtPlus(String s) {
    return tok_splitAtPlus(javaTokWithAllBrackets_cached(s));
  }

  static List<String> tok_splitAtPlus(List<String> tok) {
    return splitAtTokens(tok, "+");
  }

  static String[] dropFirst(int n, String[] a) {
    return drop(n, a);
  }

  static String[] dropFirst(String[] a) {
    return drop(1, a);
  }

  static Object[] dropFirst(Object[] a) {
    return drop(1, a);
  }

  static <A> List<A> dropFirst(List<A> l) {
    return dropFirst(1, l);
  }

  static <A> List<A> dropFirst(int n, Iterable<A> i) {
    return dropFirst(n, toList(i));
  }

  static <A> List<A> dropFirst(Iterable<A> i) {
    return dropFirst(toList(i));
  }

  static <A> List<A> dropFirst(int n, List<A> l) {
    return n <= 0 ? l : new ArrayList(l.subList(Math.min(n, l.size()), l.size()));
  }

  static <A> List<A> dropFirst(List<A> l, int n) {
    return dropFirst(n, l);
  }

  static String dropFirst(int n, String s) {
    return substring(s, n);
  }

  static String dropFirst(String s, int n) {
    return substring(s, n);
  }

  static String dropFirst(String s) {
    return substring(s, 1);
  }

  static boolean endsWith(String a, String b) {
    return a != null && a.endsWith(b);
  }

  static boolean endsWith(String a, char c) {
    return nempty(a) && lastChar(a) == c;
  }

  static boolean endsWith(String a, String b, Matches m) {
    if (!endsWith(a, b))
      return false;
    m.m = new String[] { dropLast(l(b), a) };
    return true;
  }

  static <A> A[] dropLast(A[] a) {
    return dropLast(a, 1);
  }

  static <A> A[] dropLast(A[] a, int n) {
    if (a == null)
      return null;
    n = Math.min(n, a.length);
    A[] b = arrayOfSameType(a, a.length - n);
    System.arraycopy(a, 0, b, 0, b.length);
    return b;
  }

  static <A> List<A> dropLast(List<A> l) {
    return subList(l, 0, l(l) - 1);
  }

  static <A> List<A> dropLast(int n, List<A> l) {
    return subList(l, 0, l(l) - n);
  }

  static <A> List<A> dropLast(Iterable<A> l) {
    return dropLast(asList(l));
  }

  static String dropLast(String s) {
    return substring(s, 0, l(s) - 1);
  }

  static String dropLast(String s, int n) {
    return substring(s, 0, l(s) - n);
  }

  static String dropLast(int n, String s) {
    return dropLast(s, n);
  }

  static List<String> tok_splitAtAsterisk(String s) {
    return tok_splitAtAsterisk(javaTokWithAllBrackets_cached(s));
  }

  static List<String> tok_splitAtAsterisk(List<String> tok) {
    return splitAtTokens(tok, "*");
  }

  static double parseDouble(String s) {
    return Double.parseDouble(s);
  }

  static <A> A second(List<A> l) {
    return get(l, 1);
  }

  static <A> A second(Iterable<A> l) {
    if (l == null)
      return null;
    Iterator<A> it = iterator(l);
    if (!it.hasNext())
      return null;
    it.next();
    return it.hasNext() ? it.next() : null;
  }

  static <A> A second(A[] bla) {
    return bla == null || bla.length <= 1 ? null : bla[1];
  }

  static <A, B> B second(Pair<A, B> p) {
    return p == null ? null : p.b;
  }

  static char second(String s) {
    return charAt(s, 1);
  }

  static Object first(Object list) {
    return first((Iterable) list);
  }

  static <A> A first(List<A> list) {
    return empty(list) ? null : list.get(0);
  }

  static <A> A first(A[] bla) {
    return bla == null || bla.length == 0 ? null : bla[0];
  }

  static <A> A first(Iterator<A> i) {
    return i == null || !i.hasNext() ? null : i.next();
  }

  static <A> A first(Iterable<A> i) {
    if (i == null)
      return null;
    Iterator<A> it = i.iterator();
    return it.hasNext() ? it.next() : null;
  }

  static Character first(String s) {
    return empty(s) ? null : s.charAt(0);
  }

  static Character first(CharSequence s) {
    return empty(s) ? null : s.charAt(0);
  }

  static <A, B> A first(Pair<A, B> p) {
    return p == null ? null : p.a;
  }

  static Byte first(byte[] l) {
    return empty(l) ? null : l[0];
  }

  static String unquote(String s) {
    if (s == null)
      return null;
    if (startsWith(s, '[')) {
      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.length() > 1) {
      char c = s.charAt(0);
      if (c == '\"' || c == '\'') {
        int l = endsWith(s, c) ? s.length() - 1 : s.length();
        StringBuilder sb = new StringBuilder(l - 1);
        for (int i = 1; i < l; i++) {
          char ch = s.charAt(i);
          if (ch == '\\') {
            char nextChar = (i == l - 1) ? '\\' : s.charAt(i + 1);
            if (nextChar >= '0' && nextChar <= '7') {
              String code = "" + nextChar;
              i++;
              if ((i < l - 1) && s.charAt(i + 1) >= '0' && s.charAt(i + 1) <= '7') {
                code += s.charAt(i + 1);
                i++;
                if ((i < l - 1) && s.charAt(i + 1) >= '0' && s.charAt(i + 1) <= '7') {
                  code += s.charAt(i + 1);
                  i++;
                }
              }
              sb.append((char) Integer.parseInt(code, 8));
              continue;
            }
            switch(nextChar) {
              case '\"':
                ch = '\"';
                break;
              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 'u':
                if (i >= l - 5) {
                  ch = 'u';
                  break;
                }
                int code = Integer.parseInt("" + s.charAt(i + 2) + s.charAt(i + 3) + s.charAt(i + 4) + s.charAt(i + 5), 16);
                sb.append(Character.toChars(code));
                i += 5;
                continue;
              default:
                ch = nextChar;
            }
            i++;
          }
          sb.append(ch);
        }
        return sb.toString();
      }
    }
    return s;
  }

  static boolean isQuoted(String s) {
    if (isNormalQuoted(s))
      return true;
    return isMultilineQuoted(s);
  }

  static boolean charactersEqualIC(char c1, char c2) {
    if (c1 == c2)
      return true;
    char u1 = Character.toUpperCase(c1);
    char u2 = Character.toUpperCase(c2);
    if (u1 == u2)
      return true;
    return Character.toLowerCase(u1) == Character.toLowerCase(u2);
  }

  static Map<String, java.util.regex.Pattern> compileRegexpIC_cache = syncMRUCache(10);

  static java.util.regex.Pattern compileRegexpIC(String pat) {
    java.util.regex.Pattern p = compileRegexpIC_cache.get(pat);
    if (p == null) {
      try {
        compileRegexpIC_cache.put(pat, p = java.util.regex.Pattern.compile(pat, Pattern.CASE_INSENSITIVE));
      } catch (PatternSyntaxException e) {
        throw rethrow(wrapPatternSyntaxException(e));
      }
    }
    return p;
  }

  static boolean startsWithLetterOrDigit(String s) {
    return nempty(s) && Character.isLetterOrDigit(s.charAt(0));
  }

  static String regexpQuote(String s) {
    return s.length() == 0 ? "" : Pattern.quote(s);
  }

  static boolean endsWithLetterOrDigit(String s) {
    return s != null && s.length() > 0 && Character.isLetterOrDigit(s.charAt(s.length() - 1));
  }

  static ArrayList emptyList() {
    return new ArrayList();
  }

  static ArrayList emptyList(int capacity) {
    return new ArrayList(max(0, capacity));
  }

  static ArrayList emptyList(Iterable l) {
    return l instanceof Collection ? emptyList(((Collection) l).size()) : emptyList();
  }

  static ArrayList emptyList(Object[] l) {
    return emptyList(l(l));
  }

  static <A> ArrayList<A> emptyList(Class<A> c) {
    return new ArrayList();
  }

  static int[] emptyIntArray_a = new int[0];

  static int[] emptyIntArray() {
    return emptyIntArray_a;
  }

  static char[] emptyCharArray = new char[0];

  static char[] emptyCharArray() {
    return emptyCharArray;
  }

  static double[] emptyDoubleArray = new double[0];

  static double[] emptyDoubleArray() {
    return emptyDoubleArray;
  }

  static Map emptyMap() {
    return new HashMap();
  }

  static Object[] emptyObjectArray_a = new Object[0];

  static Object[] emptyObjectArray() {
    return emptyObjectArray_a;
  }

  static String str(Object o) {
    return o == null ? "null" : o.toString();
  }

  static String str(char[] c) {
    return new String(c);
  }

  static Map<String, List<String>> parse3_cachedInput_cache = synchronizedMRUCache(1000);

  static List<String> parse3_cachedInput(String s) {
    List<String> tok = parse3_cachedInput_cache.get(s);
    if (tok == null)
      parse3_cachedInput_cache.put(s, tok = parse3(s));
    return tok;
  }

  static Map<String, List<String>> parse3_cachedPattern_cache = synchronizedMRUCache(1000);

  static synchronized List<String> parse3_cachedPattern(String s) {
    List<String> tok = parse3_cachedPattern_cache.get(s);
    if (tok == null)
      parse3_cachedPattern_cache.put(s, tok = parse3(s));
    return tok;
  }

  static String[] match2(List<String> pat, List<String> tok) {
    int i = pat.indexOf("...");
    if (i < 0)
      return match2_match(pat, tok);
    pat = new ArrayList<String>(pat);
    pat.set(i, "*");
    while (pat.size() < tok.size()) {
      pat.add(i, "*");
      pat.add(i + 1, "");
    }
    return match2_match(pat, tok);
  }

  static String[] match2_match(List<String> pat, List<String> tok) {
    List<String> result = new ArrayList<String>();
    if (pat.size() != tok.size()) {
      return null;
    }
    for (int i = 1; i < pat.size(); i += 2) {
      String p = pat.get(i), t = tok.get(i);
      if (eq(p, "*"))
        result.add(t);
      else if (!equalsIgnoreCase(unquote(p), unquote(t)))
        return null;
    }
    return result.toArray(new String[result.size()]);
  }

  static void arraycopy(Object[] a, Object[] b) {
    if (a != null && b != null)
      arraycopy(a, 0, b, 0, Math.min(a.length, b.length));
  }

  static void arraycopy(Object src, int srcPos, Object dest, int destPos, int n) {
    if (n != 0)
      System.arraycopy(src, srcPos, dest, destPos, n);
  }

  static String joinSubList(List<String> l, int i, int j) {
    return join(subList(l, i, j));
  }

  static String joinSubList(List<String> l, int i) {
    return join(subList(l, i));
  }

  static List<String> parse3(String s) {
    return dropPunctuation(javaTokPlusPeriod(s));
  }

  static <A> List<A> takeLast(List<A> l, int n) {
    return newSubList(l, l(l) - n);
  }

  static <A> List<A> takeLast(int n, List<A> l) {
    return takeLast(l, n);
  }

  static String takeLast(int n, String s) {
    return substring(s, l(s) - n);
  }

  static String takeLast(String s, int n) {
    return substring(s, l(s) - n);
  }

  public static <A> String join(String glue, Iterable<A> strings) {
    if (strings == null)
      return "";
    if (strings instanceof Collection) {
      if (((Collection) strings).size() == 1)
        return str(first(((Collection) strings)));
    }
    StringBuilder buf = new StringBuilder();
    Iterator<A> 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));
  }

  static <A> String join(Iterable<A> strings) {
    return join("", strings);
  }

  static <A> String join(Iterable<A> strings, String glue) {
    return join(glue, strings);
  }

  public static String join(String[] strings) {
    return join("", strings);
  }

  static String join(String glue, Pair p) {
    return p == null ? "" : str(p.a) + glue + str(p.b);
  }

  static String[] find2(List<String> pat, List<String> tok) {
    for (int idx = 0; idx < tok.size(); idx += 2) {
      String[] result = find2(pat, tok, idx);
      if (result != null)
        return result;
    }
    return null;
  }

  static String[] find2(List<String> pat, List<String> tok, int idx) {
    if (idx + pat.size() > tok.size())
      return null;
    List<String> result = new ArrayList();
    for (int i = 1; i < pat.size(); i += 2) {
      String p = pat.get(i), t = tok.get(idx + i);
      if (eq(p, "*"))
        result.add(t);
      else if (!p.equalsIgnoreCase(t))
        return null;
    }
    return toStringArray(result);
  }

  static String getClassName(Object o) {
    return o == null ? "null" : o instanceof Class ? ((Class) o).getName() : o.getClass().getName();
  }

  static <A, B> Map<A, B> newDangerousWeakHashMap() {
    return _registerDangerousWeakMap(synchroMap(new WeakHashMap()));
  }

  static <A, B> Map<A, B> newDangerousWeakHashMap(Object initFunction) {
    return _registerDangerousWeakMap(synchroMap(new WeakHashMap()), initFunction);
  }

  static Object callMCWithVarArgs(String method, Object... args) {
    return call_withVarargs(mc(), method, args);
  }

  static Object invokeMethod(Method m, Object o, Object... args) {
    try {
      try {
        return m.invoke(o, args);
      } catch (InvocationTargetException e) {
        throw rethrow(getExceptionCause(e));
      } catch (IllegalArgumentException e) {
        throw new IllegalArgumentException(e.getMessage() + " - was calling: " + m + ", args: " + joinWithSpace(classNames(args)));
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

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

  static Field makeAccessible(Field f) {
    try {
      f.setAccessible(true);
    } catch (Throwable e) {
      vmBus_send("makeAccessible_error", e, f);
    }
    return f;
  }

  static Method makeAccessible(Method m) {
    try {
      m.setAccessible(true);
    } catch (Throwable e) {
      vmBus_send("makeAccessible_error", e, m);
    }
    return m;
  }

  static Constructor makeAccessible(Constructor c) {
    try {
      c.setAccessible(true);
    } catch (Throwable e) {
      vmBus_send("makeAccessible_error", e, c);
    }
    return c;
  }

  static void _handleError(Error e) {
    call(javax(), "_handleError", e);
  }

  static boolean tok_isRoundBracketed(String s) {
    List<String> tok = tok_combineRoundBrackets_keep(javaTok(s));
    return l(tok) == 3 && startsWithAndEndsWith(tok.get(1), "(", ")");
  }

  static <A> List<A> dropFirstThreeAndLastThree(List<A> l) {
    return dropFirstAndLast(3, l);
  }

  static int javaTok_n, javaTok_elements;

  static boolean javaTok_opt = false;

  static List<String> javaTok(String s) {
    ++javaTok_n;
    ArrayList<String> tok = new ArrayList();
    int l = s == null ? 0 : s.length();
    int i = 0, n = 0;
    while (i < l) {
      int j = i;
      char c, d;
      while (j < l) {
        c = s.charAt(j);
        d = j + 1 >= l ? '\0' : s.charAt(j + 1);
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (c == '/' && d == '*') {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (c == '/' && d == '/') {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      tok.add(javaTok_substringN(s, i, j));
      ++n;
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      d = i + 1 >= l ? '\0' : s.charAt(i + 1);
      if (c == '\'' && Character.isJavaIdentifierStart(d) && i + 2 < l && "'\\".indexOf(s.charAt(i + 2)) < 0) {
        j += 2;
        while (j < l && Character.isJavaIdentifierPart(s.charAt(j))) ++j;
      } else if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          int c2 = s.charAt(j);
          if (c2 == opener || c2 == '\n' && opener == '\'') {
            ++j;
            break;
          } else if (c2 == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\''));
      else if (Character.isDigit(c)) {
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
        if (j < l && s.charAt(j) == 'L')
          ++j;
      } else if (c == '[' && d == '[') {
        do ++j; while (j + 1 < l && !s.substring(j, j + 2).equals("]]"));
        j = Math.min(j + 2, l);
      } else if (c == '[' && d == '=' && 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(javaTok_substringC(s, i, j));
      ++n;
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    javaTok_elements += tok.size();
    return tok;
  }

  static List<String> javaTok(List<String> tok) {
    return javaTokWithExisting(join(tok), tok);
  }

  static List<String> javaTokPlusBrackets(String s) {
    return tok_combineRoundOrCurlyBrackets_keep(javaTok(s));
  }

  static int smartIndexOf(String s, String sub, int i) {
    if (s == null)
      return 0;
    i = s.indexOf(sub, min(i, l(s)));
    return i >= 0 ? i : l(s);
  }

  static int smartIndexOf(String s, int i, char c) {
    return smartIndexOf(s, c, i);
  }

  static int smartIndexOf(String s, char c, int i) {
    if (s == null)
      return 0;
    i = s.indexOf(c, min(i, l(s)));
    return i >= 0 ? i : l(s);
  }

  static int smartIndexOf(String s, String sub) {
    return smartIndexOf(s, sub, 0);
  }

  static int smartIndexOf(String s, char c) {
    return smartIndexOf(s, c, 0);
  }

  static <A> int smartIndexOf(List<A> l, A sub) {
    return smartIndexOf(l, sub, 0);
  }

  static <A> int smartIndexOf(List<A> l, int start, A sub) {
    return smartIndexOf(l, sub, start);
  }

  static <A> int smartIndexOf(List<A> l, A sub, int start) {
    int i = indexOf(l, sub, start);
    return i < 0 ? l(l) : i;
  }

  static <A> int iteratorCount_int_close(Iterator<A> i) {
    try {
      int n = 0;
      if (i != null)
        while (i.hasNext()) {
          i.next();
          ++n;
        }
      if (i instanceof AutoCloseable)
        ((AutoCloseable) i).close();
      return n;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static Object call(Object o) {
    return callF(o);
  }

  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) {
    return call_withVarargs(o, method, args);
  }

  static List map(Iterable l, Object f) {
    return map(f, l);
  }

  static List map(Object f, Iterable l) {
    List x = emptyList(l);
    if (l != null)
      for (Object o : l) x.add(callF(f, o));
    return x;
  }

  static <A, B> List<B> map(Iterable<A> l, F1<A, B> f) {
    return map(f, l);
  }

  static <A, B> List<B> map(F1<A, B> f, Iterable<A> l) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) x.add(callF(f, o));
    return x;
  }

  static <A, B> List<B> map(IF1<A, B> f, Iterable<A> l) {
    return map(l, f);
  }

  static <A, B> List<B> map(Iterable<A> l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) x.add(f.get(o));
    return x;
  }

  static <A, B> List<B> map(IF1<A, B> f, A[] l) {
    return map(l, f);
  }

  static <A, B> List<B> map(A[] l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) x.add(f.get(o));
    return x;
  }

  static List map(Object f, Object[] l) {
    return map(f, asList(l));
  }

  static List map(Object[] l, Object f) {
    return map(f, l);
  }

  static List map(Object f, Map map) {
    return map(map, f);
  }

  static List map(Map map, Object f) {
    List x = new ArrayList();
    if (map != null)
      for (Object _e : map.entrySet()) {
        Map.Entry e = (Map.Entry) _e;
        x.add(callF(f, e.getKey(), e.getValue()));
      }
    return x;
  }

  static <A, B, C> List<C> map(Map<A, B> map, IF2<A, B, C> f) {
    return map(map, (Object) f);
  }

  static Map<String, List<String>> javaTokWithAllBrackets_cached_cache = synchronizedMRUCache(defaultTokenizerCacheSize());

  static List<String> javaTokWithAllBrackets_cached(String s) {
    List<String> tok = javaTokWithAllBrackets_cached_cache.get(s);
    if (tok == null)
      javaTokWithAllBrackets_cached_cache.put(s, tok = javaTokWithAllBrackets(s));
    return tok;
  }

  static List<String> splitAtTokens(String s, List<String> tokens) {
    return splitAtTokens(javaTok(s), tokens);
  }

  static List<String> splitAtTokens(List<String> tok, List<String> tokens) {
    List<String> l = new ArrayList();
    int i = 0;
    while (i < l(tok)) {
      int j = indexOfSubList(tok, tokens, i);
      if (i >= l(tok))
        break;
      if (j < 0)
        j = l(tok);
      l.add(trimJoin(tok.subList(i, j)));
      i = j + l(tokens);
    }
    return l;
  }

  static List<String> splitAtTokens(List<String> tok, String... tokens) {
    List<String> l = new ArrayList();
    int i = 0;
    while (i < l(tok)) {
      int j = indexOfSubList(tok, tokens, i);
      if (i >= l(tok))
        break;
      if (j < 0)
        j = l(tok);
      l.add(trimJoin(tok.subList(i, j)));
      i = j + l(tokens);
    }
    return l;
  }

  static String[] drop(int n, String[] a) {
    n = Math.min(n, a.length);
    String[] b = new String[a.length - n];
    System.arraycopy(a, n, b, 0, b.length);
    return b;
  }

  static Object[] drop(int n, Object[] a) {
    n = Math.min(n, a.length);
    Object[] b = new Object[a.length - n];
    System.arraycopy(a, n, b, 0, b.length);
    return b;
  }

  static <A> ArrayList<A> toList(A[] a) {
    return asList(a);
  }

  static ArrayList<Integer> toList(int[] a) {
    return asList(a);
  }

  static <A> ArrayList<A> toList(Set<A> s) {
    return asList(s);
  }

  static <A> ArrayList<A> toList(Iterable<A> s) {
    return asList(s);
  }

  static boolean nempty(Collection c) {
    return !empty(c);
  }

  static boolean nempty(CharSequence s) {
    return !empty(s);
  }

  static boolean nempty(Object[] o) {
    return !empty(o);
  }

  static boolean nempty(byte[] o) {
    return !empty(o);
  }

  static boolean nempty(int[] o) {
    return !empty(o);
  }

  static boolean nempty(Map m) {
    return !empty(m);
  }

  static boolean nempty(Iterator i) {
    return i != null && i.hasNext();
  }

  static boolean nempty(Object o) {
    return !empty(o);
  }

  static char lastChar(String s) {
    return empty(s) ? '\0' : s.charAt(l(s) - 1);
  }

  static <A> A[] arrayOfSameType(A[] a, int n) {
    return newObjectArrayOfSameType(a, n);
  }

  static <A> List<A> subList(List<A> l, int startIndex) {
    return subList(l, startIndex, l(l));
  }

  static <A> List<A> subList(int startIndex, int endIndex, List<A> l) {
    return subList(l, startIndex, endIndex);
  }

  static <A> List<A> subList(List<A> l, int startIndex, int endIndex) {
    if (l == null)
      return null;
    int n = l(l);
    startIndex = Math.max(0, startIndex);
    endIndex = Math.min(n, endIndex);
    if (startIndex >= endIndex)
      return ll();
    if (startIndex == 0 && endIndex == n)
      return l;
    return l.subList(startIndex, endIndex);
  }

  static <A> ArrayList<A> asList(A[] a) {
    return a == null ? new ArrayList<A>() : new ArrayList<A>(Arrays.asList(a));
  }

  static ArrayList<Integer> asList(int[] a) {
    if (a == null)
      return null;
    ArrayList<Integer> l = emptyList(a.length);
    for (int i : a) l.add(i);
    return l;
  }

  static ArrayList<Long> asList(long[] a) {
    if (a == null)
      return null;
    ArrayList<Long> l = emptyList(a.length);
    for (long i : a) l.add(i);
    return l;
  }

  static ArrayList<Float> asList(float[] a) {
    if (a == null)
      return null;
    ArrayList<Float> l = emptyList(a.length);
    for (float i : a) l.add(i);
    return l;
  }

  static ArrayList<Double> asList(double[] a) {
    if (a == null)
      return null;
    ArrayList<Double> l = emptyList(a.length);
    for (double i : a) l.add(i);
    return l;
  }

  static <A> ArrayList<A> asList(Iterable<A> s) {
    if (s instanceof ArrayList)
      return (ArrayList) s;
    ArrayList l = new ArrayList();
    if (s != null)
      for (A a : s) l.add(a);
    return l;
  }

  static <A> ArrayList<A> asList(Enumeration<A> e) {
    ArrayList l = new ArrayList();
    if (e != null)
      while (e.hasMoreElements()) l.add(e.nextElement());
    return l;
  }

  static <A> A get(List<A> l, int idx) {
    return l != null && 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;
  }

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

  static Object get(Object o, String field) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class)
        return get((Class) o, field);
      if (o instanceof Map)
        return ((Map) o).get(field);
      Field f = getOpt_findField(o.getClass(), field);
      if (f != null) {
        makeAccessible(f);
        return f.get(o);
      }
    } catch (Exception e) {
      throw asRuntimeException(e);
    }
    throw new RuntimeException("Field '" + field + "' not found in " + o.getClass().getName());
  }

  static Object get_raw(String field, Object o) {
    return get_raw(o, field);
  }

  static Object get_raw(Object o, String field) {
    try {
      if (o == null)
        return null;
      Field f = get_findField(o.getClass(), field);
      makeAccessible(f);
      return f.get(o);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static Object get(Class c, String field) {
    try {
      Field f = get_findStaticField(c, field);
      makeAccessible(f);
      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() & java.lang.reflect.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 Object get(String field, Object o) {
    return get(o, field);
  }

  static <A> Iterator<A> iterator(Iterable<A> c) {
    return c == null ? emptyIterator() : c.iterator();
  }

  static char charAt(String s, int i) {
    return s != null && i >= 0 && i < s.length() ? s.charAt(i) : '\0';
  }

  static boolean empty(Collection c) {
    return c == null || c.isEmpty();
  }

  static boolean empty(Iterable c) {
    return c == null || !c.iterator().hasNext();
  }

  static boolean empty(CharSequence s) {
    return s == null || s.length() == 0;
  }

  static boolean empty(Map map) {
    return map == null || map.isEmpty();
  }

  static boolean empty(Object[] o) {
    return o == null || o.length == 0;
  }

  static boolean empty(Object o) {
    if (o instanceof Collection)
      return empty((Collection) o);
    if (o instanceof String)
      return empty((String) o);
    if (o instanceof Map)
      return empty((Map) o);
    if (o instanceof Object[])
      return empty((Object[]) o);
    if (o instanceof byte[])
      return empty((byte[]) o);
    if (o == null)
      return true;
    throw fail("unknown type for 'empty': " + getType(o));
  }

  static boolean empty(Iterator i) {
    return i == null || !i.hasNext();
  }

  static boolean empty(double[] a) {
    return a == null || a.length == 0;
  }

  static boolean empty(float[] a) {
    return a == null || a.length == 0;
  }

  static boolean empty(int[] a) {
    return a == null || a.length == 0;
  }

  static boolean empty(long[] a) {
    return a == null || a.length == 0;
  }

  static boolean empty(byte[] a) {
    return a == null || a.length == 0;
  }

  static boolean empty(short[] a) {
    return a == null || a.length == 0;
  }

  static boolean empty(File f) {
    return getFileSize(f) == 0;
  }

  static boolean isNormalQuoted(String s) {
    int l = l(s);
    if (!(l >= 2 && s.charAt(0) == '"' && lastChar(s) == '"'))
      return false;
    int j = 1;
    while (j < l) if (s.charAt(j) == '"')
      return j == l - 1;
    else if (s.charAt(j) == '\\' && j + 1 < l)
      j += 2;
    else
      ++j;
    return false;
  }

  static boolean isMultilineQuoted(String s) {
    if (!startsWith(s, "["))
      return false;
    int i = 1;
    while (i < s.length() && s.charAt(i) == '=') ++i;
    return i < s.length() && s.charAt(i) == '[';
  }

  static <A, B> Map<A, B> syncMRUCache(int size) {
    return synchroMap(new MRUCache(size));
  }

  static RuntimeException rethrow(Throwable t) {
    if (t instanceof Error)
      _handleError((Error) t);
    throw t instanceof RuntimeException ? (RuntimeException) t : new RuntimeException(t);
  }

  static RuntimeException rethrow(String msg, Throwable t) {
    throw new RuntimeException(msg, t);
  }

  static RuntimeException wrapPatternSyntaxException(PatternSyntaxException e) {
    if (e == null)
      return null;
    String pat = e.getPattern();
    int i = e.getIndex();
    return new RuntimeException("Regular expression error between " + multiLineQuoteWithSpaces(substring(pat, 0, i)) + " and " + multiLineQuoteWithSpaces(substring(pat, i)) + " - " + e.getMessage());
  }

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

  static int max(int a, int b, int c) {
    return max(max(a, b), c);
  }

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

  static double max(double a, double b) {
    return Math.max(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 float max(float[] c) {
    if (c.length == 0)
      return Float.MAX_VALUE;
    float x = c[0];
    for (int i = 1; i < c.length; i++) x = Math.max(x, c[i]);
    return x;
  }

  static byte max(byte[] c) {
    byte x = -128;
    for (byte d : c) if (d > x)
      x = d;
    return x;
  }

  static short max(short[] c) {
    short x = -0x8000;
    for (short d : c) if (d > x)
      x = d;
    return x;
  }

  static int max(int[] c) {
    int x = Integer.MIN_VALUE;
    for (int d : c) if (d > x)
      x = d;
    return x;
  }

  static <A, B> Map<A, B> synchronizedMRUCache(int maxSize) {
    return synchroMap(new MRUCache(maxSize));
  }

  static boolean equalsIgnoreCase(String a, String b) {
    return eqic(a, b);
  }

  static boolean equalsIgnoreCase(char a, char b) {
    return eqic(a, b);
  }

  static List<String> dropPunctuation_keep = ll("*", "<", ">");

  static List<String> dropPunctuation(List<String> tok) {
    tok = new ArrayList<String>(tok);
    for (int i = 1; i < tok.size(); i += 2) {
      String t = tok.get(i);
      if (t.length() == 1 && !Character.isLetter(t.charAt(0)) && !Character.isDigit(t.charAt(0)) && !dropPunctuation_keep.contains(t)) {
        tok.set(i - 1, tok.get(i - 1) + tok.get(i + 1));
        tok.remove(i);
        tok.remove(i);
        i -= 2;
      }
    }
    return tok;
  }

  static String dropPunctuation(String s) {
    return join(dropPunctuation(nlTok(s)));
  }

  static List<String> javaTokPlusPeriod(String s) {
    List<String> tok = new ArrayList<String>();
    if (s == null)
      return tok;
    int l = s.length();
    int i = 0;
    while (i < l) {
      int j = i;
      char c;
      String cc;
      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));
      if (c == (char) 0x201C || c == (char) 0x201D)
        c = '"';
      if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          char _c = s.charAt(j);
          if (_c == (char) 0x201C || _c == (char) 0x201D)
            _c = '"';
          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) == '\''));
      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 <A> List<A> newSubList(List<A> l, int startIndex, int endIndex) {
    return cloneList(subList(l, startIndex, endIndex));
  }

  static <A> List<A> newSubList(List<A> l, int startIndex) {
    return cloneList(subList(l, startIndex));
  }

  static String[] toStringArray(Collection<String> c) {
    String[] a = new String[l(c)];
    Iterator<String> it = c.iterator();
    for (int i = 0; i < l(a); i++) a[i] = it.next();
    return a;
  }

  static String[] toStringArray(Object o) {
    if (o instanceof String[])
      return (String[]) o;
    else if (o instanceof Collection)
      return toStringArray((Collection<String>) o);
    else
      throw fail("Not a collection or array: " + getClassName(o));
  }

  static List<Pair> _registerDangerousWeakMap_preList;

  static <A> A _registerDangerousWeakMap(A map) {
    return _registerDangerousWeakMap(map, null);
  }

  static <A> A _registerDangerousWeakMap(A map, Object init) {
    callF(init, map);
    if (init instanceof String) {
      final String f = (String) init;
      init = new VF1<Map>() {

        public void get(Map map) {
          try {
            callMC(f, map);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "callMC(f, map)";
        }
      };
    }
    if (javax() == null) {
      if (_registerDangerousWeakMap_preList == null)
        _registerDangerousWeakMap_preList = synchroList();
      _registerDangerousWeakMap_preList.add(pair(map, init));
      return map;
    }
    call(javax(), "_registerDangerousWeakMap", map, init);
    return map;
  }

  static void _onLoad_registerDangerousWeakMap() {
    assertNotNull(javax());
    if (_registerDangerousWeakMap_preList == null)
      return;
    for (Pair p : _registerDangerousWeakMap_preList) _registerDangerousWeakMap(p.a, p.b);
    _registerDangerousWeakMap_preList = null;
  }

  static Map synchroMap() {
    return synchroHashMap();
  }

  static <A, B> Map<A, B> synchroMap(Map<A, B> map) {
    return Collections.synchronizedMap(map);
  }

  static Object call_withVarargs(Object o, String method, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        Class c = (Class) o;
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findStaticMethod(method, args);
        if (me != null)
          return invokeMethod(me, null, args);
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          methodSearch: for (Method m : methods) {
            {
              if (!(m.isVarArgs()))
                continue;
            }
            {
              if (!(isStaticMethod(m)))
                continue;
            }
            Object[] newArgs = massageArgsForVarArgsCall(m, args);
            if (newArgs != null)
              return invokeMethod(m, null, newArgs);
          }
        throw fail("Method " + c.getName() + "." + method + "(" + joinWithComma(classNames(args)) + ") not found");
      } else {
        Class c = o.getClass();
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(method, args);
        if (me != null)
          return invokeMethod(me, o, args);
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          methodSearch: for (Method m : methods) {
            {
              if (!(m.isVarArgs()))
                continue;
            }
            Object[] newArgs = massageArgsForVarArgsCall(m, args);
            if (newArgs != null)
              return invokeMethod(m, o, newArgs);
          }
        throw fail("Method " + c.getName() + "." + method + "(" + joinWithComma(classNames(args)) + ") not found");
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static Class mc() {
    return main.class;
  }

  static Throwable getExceptionCause(Throwable e) {
    Throwable c = e.getCause();
    return c != null ? c : e;
  }

  static String joinWithSpace(Iterable c) {
    return join(" ", c);
  }

  static String joinWithSpace(String... c) {
    return join(" ", c);
  }

  static List<String> classNames(Collection l) {
    return getClassNames(l);
  }

  static List<String> classNames(Object[] l) {
    return getClassNames(Arrays.asList(l));
  }

  static volatile StringBuffer local_log = new StringBuffer();

  static volatile Appendable print_log = local_log;

  static volatile int print_log_max = 1024 * 1024;

  static volatile int local_log_max = 100 * 1024;

  static boolean print_silent = false;

  static Object print_byThread_lock = new Object();

  static volatile ThreadLocal<Object> print_byThread;

  static volatile Object print_allThreads;

  static volatile Object print_preprocess;

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

  static <A> A print(String s, A o) {
    print((endsWithLetterOrDigit(s) ? s + ": " : s) + o);
    return o;
  }

  static <A> A print(A o) {
    ping_okInCleanUp();
    if (print_silent)
      return o;
    String s = o + "\n";
    print_noNewLine(s);
    return o;
  }

  static void print_noNewLine(String s) {
    Object f = getThreadLocal(print_byThread_dontCreate());
    if (f == null)
      f = print_allThreads;
    if (f != null)
      if (isFalse(f instanceof F1 ? ((F1) f).get(s) : callF(f, s)))
        return;
    print_raw(s);
  }

  static void print_raw(String s) {
    if (print_preprocess != null)
      s = (String) callF(print_preprocess, s);
    s = fixNewLines(s);
    Appendable loc = local_log;
    Appendable 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);
    vmBus_send("printed", mc(), s);
  }

  static void print_autoRotate() {
  }

  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 void vmBus_send(String msg, Object... args) {
    Object arg = vmBus_wrapArgs(args);
    pcallFAll(vm_busListeners_live(), msg, arg);
    pcallFAll(vm_busListenersByMessage_live().get(msg), msg, arg);
  }

  static void vmBus_send(String msg) {
    vmBus_send(msg, (Object) null);
  }

  static Class javax() {
    return getJavaX();
  }

  static List<String> tok_combineRoundBrackets_keep(List<String> tok) {
    List<String> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && eq(t, "(")) {
        int j = findEndOfBracketPart(tok, i);
        l.add(joinSubList(tok, i, j));
        i = j - 1;
      } else
        l.add(t);
    }
    return l;
  }

  static boolean startsWithAndEndsWith(String s, String prefix, String suffix) {
    return startsWith(s, prefix) && endsWith(s, suffix);
  }

  static <A> List<A> dropFirstAndLast(int n, List<A> l) {
    return cloneSubList(l, n, l(l) - n);
  }

  static <A> List<A> dropFirstAndLast(int m, int n, List<A> l) {
    return cloneSubList(l, m, l(l) - n);
  }

  static <A> List<A> dropFirstAndLast(List<A> l) {
    return dropFirstAndLast(1, l);
  }

  static String dropFirstAndLast(String s) {
    return substring(s, 1, l(s) - 1);
  }

  static String javaTok_substringN(String s, int i, int j) {
    if (i == j)
      return "";
    if (j == i + 1 && s.charAt(i) == ' ')
      return " ";
    return s.substring(i, j);
  }

  static String javaTok_substringC(String s, int i, int j) {
    return s.substring(i, j);
  }

  static List<String> javaTokWithExisting(String s, List<String> existing) {
    ++javaTok_n;
    int nExisting = javaTok_opt && existing != null ? existing.size() : 0;
    ArrayList<String> tok = existing != null ? new ArrayList(nExisting) : new ArrayList();
    int l = s.length();
    int i = 0, n = 0;
    while (i < l) {
      int j = i;
      char c, d;
      while (j < l) {
        c = s.charAt(j);
        d = j + 1 >= l ? '\0' : s.charAt(j + 1);
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (c == '/' && d == '*') {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (c == '/' && d == '/') {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      if (n < nExisting && javaTokWithExisting_isCopyable(existing.get(n), s, i, j))
        tok.add(existing.get(n));
      else
        tok.add(javaTok_substringN(s, i, j));
      ++n;
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      d = i + 1 >= l ? '\0' : s.charAt(i + 1);
      if (c == '\'' && Character.isJavaIdentifierStart(d) && i + 2 < l && "'\\".indexOf(s.charAt(i + 2)) < 0) {
        j += 2;
        while (j < l && Character.isJavaIdentifierPart(s.charAt(j))) ++j;
      } else if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          if (s.charAt(j) == opener) {
            ++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));
      else if (Character.isDigit(c)) {
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
        if (j < l && s.charAt(j) == 'L')
          ++j;
      } else if (c == '[' && d == '[') {
        do ++j; while (j + 1 < l && !s.substring(j, j + 2).equals("]]"));
        j = Math.min(j + 2, l);
      } else if (c == '[' && d == '=' && 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;
      if (n < nExisting && javaTokWithExisting_isCopyable(existing.get(n), s, i, j))
        tok.add(existing.get(n));
      else
        tok.add(javaTok_substringC(s, i, j));
      ++n;
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    javaTok_elements += tok.size();
    return tok;
  }

  static boolean javaTokWithExisting_isCopyable(String t, String s, int i, int j) {
    return t.length() == j - i && s.regionMatches(i, t, 0, j - i);
  }

  static List<String> tok_combineRoundOrCurlyBrackets_keep(List<String> tok) {
    List<String> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && eqOneOf(t, "{", "(")) {
        int j = findEndOfBracketPart(tok, i);
        l.add(joinSubList(tok, i, j));
        i = j - 1;
      } else
        l.add(t);
    }
    return l;
  }

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

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

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

  static float min(float a, float b, float c) {
    return min(min(a, b), c);
  }

  static double min(double a, double 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;
  }

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

  static byte min(byte[] c) {
    byte x = 127;
    for (byte d : c) if (d < x)
      x = d;
    return x;
  }

  static short min(short[] c) {
    short x = 0x7FFF;
    for (short d : c) if (d < x)
      x = d;
    return x;
  }

  static int min(int[] c) {
    int x = Integer.MAX_VALUE;
    for (int d : c) if (d < x)
      x = d;
    return x;
  }

  static <A> int indexOf(List<A> l, A a, int startIndex) {
    if (l == null)
      return -1;
    int n = l(l);
    for (int i = startIndex; i < n; i++) if (eq(l.get(i), a))
      return i;
    return -1;
  }

  static <A> int indexOf(List<A> l, int startIndex, A a) {
    return indexOf(l, a, startIndex);
  }

  static <A> int indexOf(List<A> l, A a) {
    if (l == null)
      return -1;
    return l.indexOf(a);
  }

  static int indexOf(String a, String b) {
    return a == null || b == null ? -1 : a.indexOf(b);
  }

  static int indexOf(String a, String b, int i) {
    return a == null || b == null ? -1 : a.indexOf(b, i);
  }

  static int indexOf(String a, char b) {
    return a == null ? -1 : a.indexOf(b);
  }

  static int indexOf(String a, int i, char b) {
    return indexOf(a, b, i);
  }

  static int indexOf(String a, char b, int i) {
    return a == null ? -1 : a.indexOf(b, i);
  }

  static int indexOf(String a, int i, String b) {
    return a == null || b == null ? -1 : a.indexOf(b, i);
  }

  static <A> int indexOf(A[] x, A a) {
    int n = l(x);
    for (int i = 0; i < n; i++) if (eq(x[i], a))
      return i;
    return -1;
  }

  static int defaultTokenizerCacheSize() {
    return 1000;
  }

  static List<String> javaTokWithAllBrackets(String s) {
    return javaTokPlusBrackets2(s);
  }

  static <A> int indexOfSubList(List<A> x, List<A> y) {
    return indexOfSubList(x, y, 0);
  }

  static <A> int indexOfSubList(List<A> x, List<A> y, int i) {
    outer: for (; i + l(y) <= l(x); i++) {
      for (int j = 0; j < l(y); j++) if (neq(x.get(i + j), y.get(j)))
        continue outer;
      return i;
    }
    return -1;
  }

  static <A> int indexOfSubList(List<A> x, A[] y, int i) {
    outer: for (; i + l(y) <= l(x); i++) {
      for (int j = 0; j < l(y); j++) if (neq(x.get(i + j), y[j]))
        continue outer;
      return i;
    }
    return -1;
  }

  static String trimJoin(List<String> s) {
    return trim(join(s));
  }

  static <A> A[] newObjectArrayOfSameType(A[] a, int n) {
    return (A[]) Array.newInstance(a.getClass().getComponentType(), n);
  }

  static <A> List<A> ll(A... a) {
    ArrayList l = new ArrayList(a.length);
    if (a != null)
      for (A x : a) l.add(x);
    return l;
  }

  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 Iterator emptyIterator() {
    return Collections.emptyIterator();
  }

  static String getType(Object o) {
    return getClassName(o);
  }

  static long getFileSize(String path) {
    return path == null ? 0 : new File(path).length();
  }

  static long getFileSize(File f) {
    return f == null ? 0 : f.length();
  }

  static AutoCloseable tempInterceptPrintIfNotIntercepted(F1<String, Boolean> f) {
    return print_byThread().get() == null ? tempInterceptPrint(f) : null;
  }

  static String multiLineQuoteWithSpaces(String s) {
    return multiLineQuote(" " + s + " ");
  }

  static List<String> nlTok(String s) {
    return javaTokPlusPeriod(s);
  }

  static <A> ArrayList<A> cloneList(Iterable<A> l) {
    return l instanceof Collection ? cloneList((Collection) l) : asList(l);
  }

  static <A> ArrayList<A> cloneList(Collection<A> l) {
    if (l == null)
      return new ArrayList();
    synchronized (collectionMutex(l)) {
      return new ArrayList<A>(l);
    }
  }

  static HashMap<String, List<Method>> callMC_cache = new HashMap();

  static String callMC_key;

  static Method callMC_value;

  static Object callMC(String method, String[] arg) {
    return callMC(method, new Object[] { arg });
  }

  static Object callMC(String method, Object... args) {
    try {
      Method me;
      if (callMC_cache == null)
        callMC_cache = new HashMap();
      synchronized (callMC_cache) {
        me = method == callMC_key ? callMC_value : null;
      }
      if (me != null)
        try {
          return invokeMethod(me, null, args);
        } catch (IllegalArgumentException e) {
          throw new RuntimeException("Can't call " + me + " with arguments " + classNames(args), e);
        }
      List<Method> m;
      synchronized (callMC_cache) {
        m = callMC_cache.get(method);
      }
      if (m == null) {
        if (callMC_cache.isEmpty()) {
          callMC_makeCache();
          m = callMC_cache.get(method);
        }
        if (m == null)
          throw fail("Method named " + method + " not found in main");
      }
      int n = m.size();
      if (n == 1) {
        me = m.get(0);
        synchronized (callMC_cache) {
          callMC_key = method;
          callMC_value = me;
        }
        try {
          return invokeMethod(me, null, args);
        } catch (IllegalArgumentException e) {
          throw new RuntimeException("Can't call " + me + " with arguments " + classNames(args), e);
        }
      }
      for (int i = 0; i < n; i++) {
        me = m.get(i);
        if (call_checkArgs(me, args, false))
          return invokeMethod(me, null, args);
      }
      throw fail("No method called " + method + " with arguments (" + joinWithComma(getClasses(args)) + ") found in main");
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static void callMC_makeCache() {
    synchronized (callMC_cache) {
      callMC_cache.clear();
      Class _c = (Class) mc(), c = _c;
      while (c != null) {
        for (Method m : c.getDeclaredMethods()) if ((m.getModifiers() & java.lang.reflect.Modifier.STATIC) != 0) {
          makeAccessible(m);
          multiMapPut(callMC_cache, m.getName(), m);
        }
        c = c.getSuperclass();
      }
    }
  }

  static <A> List<A> synchroList() {
    return Collections.synchronizedList(new ArrayList<A>());
  }

  static <A> List<A> synchroList(List<A> l) {
    return Collections.synchronizedList(l);
  }

  static <A, B> Pair<A, B> pair(A a, B b) {
    return new Pair(a, b);
  }

  static <A> Pair<A, A> pair(A a) {
    return new Pair(a, a);
  }

  static <A> A assertNotNull(A a) {
    assertTrue(a != null);
    return a;
  }

  static <A> A assertNotNull(String msg, A a) {
    assertTrue(msg, a != null);
    return a;
  }

  static Map synchroHashMap() {
    return Collections.synchronizedMap(new HashMap());
  }

  static final Map<Class, _MethodCache> callOpt_cache = newDangerousWeakHashMap();

  static Object callOpt_cached(Object o, String methodName, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        Class c = (Class) o;
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(methodName, args);
        if (me == null || (me.getModifiers() & Modifier.STATIC) == 0)
          return null;
        return invokeMethod(me, null, args);
      } else {
        Class c = o.getClass();
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(methodName, args);
        if (me == null)
          return null;
        return invokeMethod(me, o, args);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static _MethodCache callOpt_getCache(Class c) {
    synchronized (callOpt_cache) {
      _MethodCache cache = callOpt_cache.get(c);
      if (cache == null)
        callOpt_cache.put(c, cache = new _MethodCache(c));
      return cache;
    }
  }

  static boolean isStaticMethod(Method m) {
    return methodIsStatic(m);
  }

  static Object[] massageArgsForVarArgsCall(Method m, Object[] args) {
    Class<?>[] types = m.getParameterTypes();
    int n = types.length - 1, nArgs = args.length;
    if (nArgs < n)
      return null;
    for (int i = 0; i < n; i++) if (!argumentCompatibleWithType(args[i], types[i]))
      return null;
    Class varArgType = types[n].getComponentType();
    for (int i = n; i < nArgs; i++) if (!argumentCompatibleWithType(args[i], varArgType))
      return null;
    Object[] newArgs = new Object[n + 1];
    arraycopy(args, 0, newArgs, 0, n);
    Object[] varArgs = arrayOfType(varArgType, nArgs - n);
    arraycopy(args, n, varArgs, 0, nArgs - n);
    newArgs[n] = varArgs;
    return newArgs;
  }

  static <A> String joinWithComma(Collection<A> c) {
    return join(", ", c);
  }

  static String joinWithComma(String... c) {
    return join(", ", c);
  }

  static String joinWithComma(Pair p) {
    return p == null ? "" : joinWithComma(str(p.a), str(p.b));
  }

  static List<String> getClassNames(Collection l) {
    List<String> out = new ArrayList();
    if (l != null)
      for (Object o : l) out.add(o == null ? null : getClassName(o));
    return out;
  }

  static void ping_okInCleanUp() {
    if (ping_pauseAll || ping_anyActions)
      ping_impl(true);
  }

  static Object getThreadLocal(Object o, String name) {
    ThreadLocal t = (ThreadLocal) (getOpt(o, name));
    return t != null ? t.get() : null;
  }

  static <A> A getThreadLocal(ThreadLocal<A> tl) {
    return tl == null ? null : tl.get();
  }

  static <A> A getThreadLocal(ThreadLocal<A> tl, A defaultValue) {
    return or(getThreadLocal(tl), defaultValue);
  }

  static ThreadLocal<Object> print_byThread_dontCreate() {
    return print_byThread;
  }

  static boolean isFalse(Object o) {
    return eq(false, o);
  }

  static String fixNewLines(String s) {
    int i = indexOf(s, '\r');
    if (i < 0)
      return s;
    int l = s.length();
    StringBuilder out = new StringBuilder(l);
    out.append(s, 0, i);
    for (; i < l; i++) {
      char c = s.charAt(i);
      if (c != '\r')
        out.append(c);
      else {
        out.append('\n');
        if (i + 1 < l && s.charAt(i + 1) == '\n')
          ++i;
      }
    }
    return out.toString();
  }

  static void print_append(Appendable buf, String s, int max) {
    try {
      synchronized (buf) {
        buf.append(s);
        if (buf instanceof StringBuffer)
          rotateStringBuffer(((StringBuffer) buf), max);
        else if (buf instanceof StringBuilder)
          rotateStringBuilder(((StringBuilder) buf), max);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static Object vmBus_wrapArgs(Object... args) {
    return empty(args) ? null : l(args) == 1 ? args[0] : args;
  }

  static void pcallFAll(Collection l, Object... args) {
    if (l != null)
      for (Object f : cloneList(l)) pcallF(f, args);
  }

  static void pcallFAll(Iterator it, Object... args) {
    while (it.hasNext()) pcallF(it.next(), args);
  }

  static Set vm_busListeners_live_cache;

  static Set vm_busListeners_live() {
    if (vm_busListeners_live_cache == null)
      vm_busListeners_live_cache = vm_busListeners_live_load();
    return vm_busListeners_live_cache;
  }

  static Set vm_busListeners_live_load() {
    return vm_generalIdentityHashSet("busListeners");
  }

  static Map<String, Set> vm_busListenersByMessage_live_cache;

  static Map<String, Set> vm_busListenersByMessage_live() {
    if (vm_busListenersByMessage_live_cache == null)
      vm_busListenersByMessage_live_cache = vm_busListenersByMessage_live_load();
    return vm_busListenersByMessage_live_cache;
  }

  static Map<String, Set> vm_busListenersByMessage_live_load() {
    return vm_generalHashMap("busListenersByMessage");
  }

  static Class __javax;

  static Class getJavaX() {
    try {
      return __javax;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static boolean odd(int i) {
    return (i & 1) != 0;
  }

  static boolean odd(long i) {
    return (i & 1) != 0;
  }

  static boolean odd(BigInteger i) {
    return odd(toInt(i));
  }

  static int findEndOfBracketPart(List<String> cnc, int i) {
    int j = i + 2, level = 1;
    while (j < cnc.size()) {
      if (eqOneOf(cnc.get(j), "{", "("))
        ++level;
      else if (eqOneOf(cnc.get(j), "}", ")"))
        --level;
      if (level == 0)
        return j + 1;
      ++j;
    }
    return cnc.size();
  }

  static <A> List<A> cloneSubList(List<A> l, int startIndex, int endIndex) {
    return newSubList(l, startIndex, endIndex);
  }

  static <A> List<A> cloneSubList(List<A> l, int startIndex) {
    return newSubList(l, startIndex);
  }

  static boolean eqOneOf(Object o, Object... l) {
    for (Object x : l) if (eq(o, x))
      return true;
    return false;
  }

  static List<String> javaTokPlusBrackets2(String s) {
    return tok_combineRoundCurlySquareBrackets_keep(javaTok(s));
  }

  static ThreadLocal<Object> print_byThread() {
    synchronized (print_byThread_lock) {
      if (print_byThread == null)
        print_byThread = new ThreadLocal();
    }
    return print_byThread;
  }

  static AutoCloseable tempInterceptPrint(F1<String, Boolean> f) {
    return tempSetThreadLocal(print_byThread(), f);
  }

  static String multiLineQuote(String s) {
    for (int i = 0; ; i++) {
      String closer = "]" + rep('=', i) + "]";
      if (!contains(s, closer))
        return "[" + rep('=', i) + "[" + s + closer;
    }
  }

  static Object collectionMutex(List l) {
    return l;
  }

  static Object collectionMutex(Object o) {
    if (o instanceof List)
      return o;
    String c = className(o);
    if (eq(c, "java.util.TreeMap$KeySet"))
      c = className(o = getOpt(o, "m"));
    else if (eq(c, "java.util.HashMap$KeySet"))
      c = className(o = get_raw(o, "this$0"));
    if (eqOneOf(c, "java.util.TreeMap$AscendingSubMap", "java.util.TreeMap$DescendingSubMap"))
      c = className(o = get_raw(o, "m"));
    return o;
  }

  static List<Class> getClasses(Object[] array) {
    List<Class> l = emptyList(l(array));
    for (Object o : array) l.add(_getClass(o));
    return l;
  }

  static <A, B> void multiMapPut(Map<A, List<B>> map, A a, B b) {
    List<B> l = map.get(a);
    if (l == null)
      map.put(a, l = new ArrayList());
    l.add(b);
  }

  static void assertTrue(Object o) {
    if (!(eq(o, true)))
      throw fail(str(o));
  }

  static boolean assertTrue(String msg, boolean b) {
    if (!b)
      throw fail(msg);
    return b;
  }

  static boolean assertTrue(boolean b) {
    if (!b)
      throw fail("oops");
    return b;
  }

  static boolean methodIsStatic(Method m) {
    return (m.getModifiers() & Modifier.STATIC) != 0;
  }

  static boolean argumentCompatibleWithType(Object arg, Class type) {
    return arg == null ? !type.isPrimitive() : isInstanceX(type, arg);
  }

  static <A> A[] arrayOfType(Class<A> type, int n) {
    return makeArray(type, n);
  }

  static <A> A[] arrayOfType(int n, Class<A> type) {
    return arrayOfType(type, n);
  }

  static volatile boolean ping_pauseAll = false;

  static int ping_sleep = 100;

  static volatile boolean ping_anyActions = false;

  static Map<Thread, Object> ping_actions = newWeakHashMap();

  static ThreadLocal<Boolean> ping_isCleanUpThread = new ThreadLocal();

  static boolean ping() {
    if (ping_pauseAll || ping_anyActions)
      ping_impl(true);
    return true;
  }

  static boolean ping_impl(boolean okInCleanUp) {
    try {
      if (ping_pauseAll && !isAWTThread()) {
        do Thread.sleep(ping_sleep); while (ping_pauseAll);
        return true;
      }
      if (ping_anyActions) {
        if (!okInCleanUp && !isTrue(ping_isCleanUpThread.get()))
          failIfUnlicensed();
        Object action = null;
        synchronized (ping_actions) {
          if (!ping_actions.isEmpty()) {
            action = ping_actions.get(currentThread());
            if (action instanceof Runnable)
              ping_actions.remove(currentThread());
            if (ping_actions.isEmpty())
              ping_anyActions = false;
          }
        }
        if (action instanceof Runnable)
          ((Runnable) action).run();
        else if (eq(action, "cancelled"))
          throw fail("Thread cancelled.");
      }
      return false;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static Object getOpt(Object o, String field) {
    return getOpt_cached(o, field);
  }

  static Object getOpt(String field, Object o) {
    return getOpt_cached(o, field);
  }

  static Object getOpt_raw(Object o, String field) {
    try {
      Field f = getOpt_findField(o.getClass(), field);
      if (f == null)
        return null;
      makeAccessible(f);
      return f.get(o);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static Object getOpt(Class c, String field) {
    try {
      if (c == null)
        return null;
      Field f = getOpt_findStaticField(c, field);
      if (f == null)
        return null;
      makeAccessible(f);
      return f.get(null);
    } catch (Exception __e) {
      throw rethrow(__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() & java.lang.reflect.Modifier.STATIC) != 0)
        return f;
      _c = _c.getSuperclass();
    } while (_c != null);
    return null;
  }

  static <A> A or(A a, A b) {
    return a != null ? a : b;
  }

  static void rotateStringBuffer(StringBuffer buf, int max) {
    try {
      if (buf == null)
        return;
      synchronized (buf) {
        if (buf.length() <= max)
          return;
        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);
        }
        buf.trimToSize();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static void rotateStringBuilder(StringBuilder buf, int max) {
    try {
      if (buf == null)
        return;
      synchronized (buf) {
        if (buf.length() <= max)
          return;
        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);
        }
        buf.trimToSize();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static Object pcallF(Object f, Object... args) {
    return pcallFunction(f, args);
  }

  static <A, B> B pcallF(F1<A, B> f, A a) {
    try {
      return f == null ? null : f.get(a);
    } catch (Throwable __e) {
      return null;
    }
  }

  static <A> void pcallF(VF1<A> f, A a) {
    try {
      if (f != null)
        f.get(a);
    } catch (Throwable __e) {
      _handleException(__e);
    }
  }

  static Set vm_generalIdentityHashSet(Object name) {
    synchronized (get(javax(), "generalMap")) {
      Set set = (Set) (vm_generalMap_get(name));
      if (set == null)
        vm_generalMap_put(name, set = syncIdentityHashSet());
      return set;
    }
  }

  static Map vm_generalHashMap(Object name) {
    synchronized (get(javax(), "generalMap")) {
      Map m = (Map) (vm_generalMap_get(name));
      if (m == null)
        vm_generalMap_put(name, m = syncHashMap());
      return m;
    }
  }

  static int toInt(Object o) {
    if (o == null)
      return 0;
    if (o instanceof Number)
      return ((Number) o).intValue();
    if (o instanceof String)
      return parseInt(((String) o));
    if (o instanceof Boolean)
      return boolToInt(((Boolean) o));
    throw fail("woot not int: " + getClassName(o));
  }

  static int toInt(long l) {
    if (l != (int) l)
      throw fail("Too large for int: " + l);
    return (int) l;
  }

  static List<String> tok_combineRoundCurlySquareBrackets_keep(List<String> tok) {
    List<String> l = new ArrayList();
    for (int i = 0; i < l(tok); i++) {
      String t = tok.get(i);
      if (odd(i) && eqOneOf(t, "{", "(", "[")) {
        int j = findEndOfBracketPart2(tok, i);
        l.add(joinSubList(tok, i, j));
        i = j - 1;
      } else
        l.add(t);
    }
    return l;
  }

  static <A> AutoCloseable tempSetThreadLocal(final ThreadLocal<A> tl, A a) {
    if (tl == null)
      return null;
    final A prev = setThreadLocal(tl, a);
    return new AutoCloseable() {

      public String toString() {
        return "tl.set(prev);";
      }

      public void close() throws Exception {
        tl.set(prev);
      }
    };
  }

  static String rep(int n, char c) {
    return repeat(c, n);
  }

  static String rep(char c, int n) {
    return repeat(c, n);
  }

  static <A> List<A> rep(A a, int n) {
    return repeat(a, n);
  }

  static <A> List<A> rep(int n, A a) {
    return repeat(n, a);
  }

  static boolean contains(Collection c, Object o) {
    return c != null && c.contains(o);
  }

  static boolean contains(Object[] x, Object o) {
    if (x != null)
      for (Object a : x) if (eq(a, o))
        return true;
    return false;
  }

  static boolean contains(String s, char c) {
    return s != null && s.indexOf(c) >= 0;
  }

  static boolean contains(String s, String b) {
    return s != null && s.indexOf(b) >= 0;
  }

  static boolean contains(BitSet bs, int i) {
    return bs != null && bs.get(i);
  }

  static String className(Object o) {
    return getClassName(o);
  }

  static Class<?> _getClass(String name) {
    try {
      return Class.forName(name);
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static Class _getClass(Object o) {
    return o == null ? null : o instanceof Class ? (Class) o : o.getClass();
  }

  static Class _getClass(Object realm, String name) {
    try {
      return getClass(realm).getClassLoader().loadClass(classNameToVM(name));
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static <A> A[] makeArray(Class<A> type, int n) {
    return (A[]) Array.newInstance(type, n);
  }

  static <A, B> Map<A, B> newWeakHashMap() {
    return _registerWeakMap(synchroMap(new WeakHashMap()));
  }

  static boolean isAWTThread() {
    if (isAndroid())
      return false;
    if (isHeadless())
      return false;
    return isAWTThread_awt();
  }

  static boolean isAWTThread_awt() {
    return SwingUtilities.isEventDispatchThread();
  }

  static void failIfUnlicensed() {
    assertTrue("license off", licensed());
  }

  static Thread currentThread() {
    return Thread.currentThread();
  }

  static class getOpt_Map extends WeakHashMap {

    getOpt_Map() {
      if (getOpt_special == null)
        getOpt_special = new HashMap();
      clear();
    }

    public void clear() {
      super.clear();
      put(Class.class, getOpt_special);
      put(String.class, getOpt_special);
    }
  }

  static final Map<Class, HashMap<String, Field>> getOpt_cache = _registerDangerousWeakMap(synchroMap(new getOpt_Map()));

  static HashMap getOpt_special;

  static Object getOpt_cached(Object o, String field) {
    try {
      if (o == null)
        return null;
      Class c = o.getClass();
      HashMap<String, Field> map;
      synchronized (getOpt_cache) {
        map = getOpt_cache.get(c);
        if (map == null)
          map = getOpt_makeCache(c);
      }
      if (map == getOpt_special) {
        if (o instanceof Class)
          return getOpt((Class) o, field);
        if (o instanceof Map)
          return ((Map) o).get(field);
      }
      Field f = map.get(field);
      if (f != null)
        return f.get(o);
      return null;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static HashMap<String, Field> getOpt_makeCache(Class c) {
    HashMap<String, Field> map;
    if (isSubtypeOf(c, Map.class))
      map = getOpt_special;
    else {
      map = new HashMap();
      if (!reflection_classesNotToScan().contains(c.getName())) {
        Class _c = c;
        do {
          for (Field f : _c.getDeclaredFields()) {
            makeAccessible(f);
            String name = f.getName();
            if (!map.containsKey(name))
              map.put(name, f);
          }
          _c = _c.getSuperclass();
        } while (_c != null);
      }
    }
    if (getOpt_cache != null)
      getOpt_cache.put(c, map);
    return map;
  }

  static Object pcallFunction(Object f, Object... args) {
    try {
      return callFunction(f, args);
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return null;
  }

  static volatile PersistableThrowable _handleException_lastException;

  static List _handleException_onException = synchroList(ll("printStackTrace2"));

  static void _handleException(Throwable e) {
    _handleException_lastException = persistableThrowable(e);
    Throwable e2 = innerException(e);
    if (e2.getClass() == RuntimeException.class && eq(e2.getMessage(), "Thread cancelled.") || e2 instanceof InterruptedException)
      return;
    for (Object f : cloneList(_handleException_onException)) try {
      callF(f, e);
    } catch (Throwable e3) {
      printStackTrace2(e3);
    }
  }

  static Object vm_generalMap_get(Object key) {
    return vm_generalMap().get(key);
  }

  static Object vm_generalMap_put(Object key, Object value) {
    return mapPutOrRemove(vm_generalMap(), key, value);
  }

  static <A> Set<A> syncIdentityHashSet() {
    return (Set) synchronizedSet(identityHashSet());
  }

  static Map syncHashMap() {
    return synchroHashMap();
  }

  static int parseInt(String s) {
    return emptyString(s) ? 0 : Integer.parseInt(s);
  }

  static int parseInt(char c) {
    return Integer.parseInt(str(c));
  }

  static int boolToInt(boolean b) {
    return b ? 1 : 0;
  }

  static int findEndOfBracketPart2(List<String> cnc, int i) {
    int j = i + 2, level = 1;
    while (j < cnc.size()) {
      if (eqOneOf(cnc.get(j), "{", "(", "["))
        ++level;
      else if (eqOneOf(cnc.get(j), "}", ")", "]"))
        --level;
      if (level == 0)
        return j + 1;
      ++j;
    }
    return cnc.size();
  }

  static Throwable printStackTrace2(Throwable e) {
    print(getStackTrace2(e));
    return e;
  }

  static void printStackTrace2() {
    printStackTrace2(new Throwable());
  }

  static void printStackTrace2(String msg) {
    printStackTrace2(new Throwable(msg));
  }

  static <A> A setThreadLocal(ThreadLocal<A> tl, A value) {
    if (tl == null)
      return null;
    A old = tl.get();
    tl.set(value);
    return old;
  }

  static String repeat(char c, int n) {
    n = Math.max(n, 0);
    char[] chars = new char[n];
    for (int i = 0; i < n; i++) chars[i] = c;
    return new String(chars);
  }

  static <A> List<A> repeat(A a, int n) {
    n = Math.max(n, 0);
    List<A> l = new ArrayList(n);
    for (int i = 0; i < n; i++) l.add(a);
    return l;
  }

  static <A> List<A> repeat(int n, A a) {
    return repeat(a, n);
  }

  static Class<?> getClass(String name) {
    try {
      return Class.forName(name);
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static Class getClass(Object o) {
    return o instanceof Class ? (Class) o : o.getClass();
  }

  static Class getClass(Object realm, String name) {
    try {
      try {
        return getClass(realm).getClassLoader().loadClass(classNameToVM(name));
      } catch (ClassNotFoundException e) {
        return null;
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static String classNameToVM(String name) {
    return name.replace(".", "$");
  }

  static List _registerWeakMap_preList;

  static <A> A _registerWeakMap(A map) {
    if (javax() == null) {
      if (_registerWeakMap_preList == null)
        _registerWeakMap_preList = synchroList();
      _registerWeakMap_preList.add(map);
      return map;
    }
    try {
      call(javax(), "_registerWeakMap", map);
    } catch (Throwable e) {
      printException(e);
      print("Upgrade JavaX!!");
    }
    return map;
  }

  static void _onLoad_registerWeakMap() {
    assertNotNull(javax());
    if (_registerWeakMap_preList == null)
      return;
    for (Object o : _registerWeakMap_preList) _registerWeakMap(o);
    _registerWeakMap_preList = null;
  }

  static int isAndroid_flag;

  static boolean isAndroid() {
    if (isAndroid_flag == 0)
      isAndroid_flag = System.getProperty("java.vendor").toLowerCase().indexOf("android") >= 0 ? 1 : -1;
    return isAndroid_flag > 0;
  }

  static Boolean isHeadless_cache;

  static boolean isHeadless() {
    if (isHeadless_cache != null)
      return isHeadless_cache;
    if (isAndroid())
      return isHeadless_cache = true;
    if (GraphicsEnvironment.isHeadless())
      return isHeadless_cache = true;
    try {
      SwingUtilities.isEventDispatchThread();
      return isHeadless_cache = false;
    } catch (Throwable e) {
      return isHeadless_cache = true;
    }
  }

  static volatile boolean licensed_yes = true;

  static boolean licensed() {
    if (!licensed_yes)
      return false;
    ping_okInCleanUp();
    return true;
  }

  static void licensed_off() {
    licensed_yes = false;
  }

  static void clear(Collection c) {
    if (c != null)
      c.clear();
  }

  static void clear(Map map) {
    if (map != null)
      map.clear();
  }

  static <A, B> void put(Map<A, B> map, A a, B b) {
    if (map != null)
      map.put(a, b);
  }

  static <A> void put(List<A> l, int i, A a) {
    if (l != null && i >= 0 && i < l(l))
      l.set(i, a);
  }

  static <A, B> B mapGet2(Map<A, B> map, A a) {
    return map == null ? null : map.get(a);
  }

  static <A, B> B mapGet2(A a, Map<A, B> map) {
    return map == null ? null : map.get(a);
  }

  static boolean isSubtypeOf(Class a, Class b) {
    return b.isAssignableFrom(a);
  }

  static Set<String> reflection_classesNotToScan_value = litset("jdk.internal.loader.URLClassPath");

  static Set<String> reflection_classesNotToScan() {
    return reflection_classesNotToScan_value;
  }

  static Object callFunction(Object f, Object... args) {
    return callF(f, args);
  }

  static PersistableThrowable persistableThrowable(Throwable e) {
    return e == null ? null : new PersistableThrowable(e);
  }

  static Throwable innerException(Throwable e) {
    return getInnerException(e);
  }

  static Map vm_generalMap_map;

  static Map vm_generalMap() {
    if (vm_generalMap_map == null)
      vm_generalMap_map = (Map) get(javax(), "generalMap");
    return vm_generalMap_map;
  }

  static <A, B> B mapPutOrRemove(Map<A, B> map, A key, B value) {
    if (map != null && key != null)
      if (value != null)
        return map.put(key, value);
      else
        return map.remove(key);
    return null;
  }

  static <A> Set<A> synchronizedSet() {
    return synchroHashSet();
  }

  static <A> Set<A> synchronizedSet(Set<A> set) {
    return Collections.synchronizedSet(set);
  }

  static <A> Set<A> identityHashSet() {
    return Collections.newSetFromMap(new IdentityHashMap());
  }

  static boolean emptyString(String s) {
    return s == null || s.length() == 0;
  }

  static String getStackTrace2(Throwable e) {
    return hideCredentials(getStackTrace(unwrapTrivialExceptionWraps(e)) + replacePrefix("java.lang.RuntimeException: ", "FAIL: ", hideCredentials(str(innerException2(e)))) + "\n");
  }

  static <A extends Throwable> A printException(A e) {
    printStackTrace(e);
    return e;
  }

  static <A> HashSet<A> litset(A... items) {
    return lithashset(items);
  }

  static Throwable getInnerException(Throwable e) {
    if (e == null)
      return null;
    while (e.getCause() != null) e = e.getCause();
    return e;
  }

  static Throwable getInnerException(Runnable r) {
    return getInnerException(getException(r));
  }

  static <A> Set<A> synchroHashSet() {
    return Collections.synchronizedSet(new HashSet<A>());
  }

  static String hideCredentials(URL url) {
    return url == null ? null : hideCredentials(str(url));
  }

  static String hideCredentials(String url) {
    try {
      if (startsWithOneOf(url, "http://", "https://") && isAGIBlueDomain(hostNameFromURL(url)))
        return url;
    } catch (Throwable e) {
      print("HideCredentials", e);
    }
    return url.replaceAll("([&?])(_pass|key|cookie)=[^&\\s\"]*", "$1$2=<hidden>");
  }

  static String hideCredentials(Object o) {
    return hideCredentials(str(o));
  }

  static String getStackTrace(Throwable throwable) {
    lastException(throwable);
    return getStackTrace_noRecord(throwable);
  }

  static String getStackTrace_noRecord(Throwable throwable) {
    StringWriter writer = new StringWriter();
    throwable.printStackTrace(new PrintWriter(writer));
    return hideCredentials(writer.toString());
  }

  static String getStackTrace() {
    return getStackTrace_noRecord(new Throwable());
  }

  static Throwable unwrapTrivialExceptionWraps(Throwable e) {
    if (e == null)
      return e;
    while (e.getClass() == RuntimeException.class && e.getCause() != null && eq(e.getMessage(), str(e.getCause()))) e = e.getCause();
    return e;
  }

  static String replacePrefix(String prefix, String replacement, String s) {
    if (!startsWith(s, prefix))
      return s;
    return replacement + substring(s, l(prefix));
  }

  static Throwable innerException2(Throwable e) {
    if (e == null)
      return null;
    while (empty(e.getMessage()) && e.getCause() != null) e = e.getCause();
    return e;
  }

  static <A extends Throwable> A printStackTrace(A e) {
    print(getStackTrace(e));
    return e;
  }

  static void printStackTrace() {
    printStackTrace(new Throwable());
  }

  static void printStackTrace(String msg) {
    printStackTrace(new Throwable(msg));
  }

  static void printStackTrace(String msg, Throwable e) {
    printStackTrace(new Throwable(msg, e));
  }

  static <A> HashSet<A> lithashset(A... items) {
    HashSet<A> set = new HashSet();
    for (A a : items) set.add(a);
    return set;
  }

  static Throwable getException(Runnable r) {
    try {
      callF(r);
      return null;
    } catch (Throwable e) {
      return e;
    }
  }

  static boolean startsWithOneOf(String s, String... l) {
    for (String x : l) if (startsWith(s, x))
      return true;
    return false;
  }

  static boolean startsWithOneOf(String s, Matches m, String... l) {
    for (String x : l) if (startsWith(s, x, m))
      return true;
    return false;
  }

  static boolean isAGIBlueDomain(String domain) {
    return domainIsUnder(domain, theAGIBlueDomain());
  }

  static String hostNameFromURL(String url) {
    try {
      return new URL(url).getHost();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static volatile PersistableThrowable lastException_lastException;

  static PersistableThrowable lastException() {
    return lastException_lastException;
  }

  static void lastException(Throwable e) {
    lastException_lastException = persistableThrowable(e);
  }

  static boolean domainIsUnder(String domain, String mainDomain) {
    return eqic(domain, mainDomain) || ewic(domain, "." + mainDomain);
  }

  static String theAGIBlueDomain() {
    return "agi.blue";
  }

  static boolean ewic(String a, String b) {
    return endsWithIgnoreCase(a, b);
  }

  static boolean ewic(String a, String b, Matches m) {
    return endsWithIgnoreCase(a, b, m);
  }

  static boolean endsWithIgnoreCase(String a, String b) {
    int la = l(a), lb = l(b);
    return la >= lb && regionMatchesIC(a, la - lb, b, 0, lb);
  }

  static boolean endsWithIgnoreCase(String a, String b, Matches m) {
    if (!endsWithIgnoreCase(a, b))
      return false;
    m.m = new String[] { substring(a, 0, l(a) - l(b)) };
    return true;
  }

  static boolean regionMatchesIC(String a, int offsetA, String b, int offsetB, int len) {
    return a != null && a.regionMatches(true, offsetA, b, offsetB, len);
  }

  final static class _MethodCache {

    final Class c;

    final HashMap<String, List<Method>> cache = new HashMap();

    _MethodCache(Class c) {
      this.c = c;
      _init();
    }

    void _init() {
      Class _c = c;
      while (_c != null) {
        for (Method m : _c.getDeclaredMethods()) if (!isAbstract(m) && !reflection_isForbiddenMethod(m))
          multiMapPut(cache, m.getName(), makeAccessible(m));
        _c = _c.getSuperclass();
      }
      for (Class intf : allInterfacesImplementedBy(c)) for (Method m : intf.getDeclaredMethods()) if (m.isDefault() && !reflection_isForbiddenMethod(m))
        multiMapPut(cache, m.getName(), makeAccessible(m));
    }

    Method findMethod(String method, Object[] args) {
      try {
        List<Method> m = cache.get(method);
        if (m == null)
          return null;
        int n = m.size();
        for (int i = 0; i < n; i++) {
          Method me = m.get(i);
          if (call_checkArgs(me, args, false))
            return me;
        }
        return null;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    Method findStaticMethod(String method, Object[] args) {
      try {
        List<Method> m = cache.get(method);
        if (m == null)
          return null;
        int n = m.size();
        for (int i = 0; i < n; i++) {
          Method me = m.get(i);
          if (isStaticMethod(me) && call_checkArgs(me, args, false))
            return me;
        }
        return null;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }
  }

  static abstract class VF1<A> implements IVF1<A> {

    public abstract void get(A a);
  }

  static class MRUCache<A, B> extends LinkedHashMap<A, B> {

    int maxSize = 10;

    MRUCache() {
    }

    MRUCache(int maxSize) {
      this.maxSize = maxSize;
    }

    protected boolean removeEldestEntry(Map.Entry eldest) {
      return size() > maxSize;
    }

    Object _serialize() {
      return ll(maxSize, cloneLinkedHashMap(this));
    }

    static MRUCache _deserialize(List l) {
      MRUCache m = new MRUCache();
      m.maxSize = (int) first(l);
      m.putAll((LinkedHashMap) second(l));
      return m;
    }
  }

  static interface IF2<A, B, C> {

    C get(A a, B b);
  }

  static class Matches {

    String[] m;

    Matches() {
    }

    Matches(String... m) {
      this.m = m;
    }

    String get(int i) {
      return i < m.length ? m[i] : null;
    }

    String unq(int i) {
      return unquote(get(i));
    }

    String tlc(int i) {
      return unq(i).toLowerCase();
    }

    boolean bool(int i) {
      return "true".equals(unq(i));
    }

    String rest() {
      return m[m.length - 1];
    }

    int psi(int i) {
      return Integer.parseInt(unq(i));
    }

    public String toString() {
      return "Matches(" + joinWithComma(quoteAll(asList(m))) + ")";
    }

    public int hashCode() {
      return _hashCode(toList(m));
    }

    public boolean equals(Object o) {
      return o instanceof Matches && arraysEqual(m, ((Matches) o).m);
    }
  }

  static interface IF1<A, B> {

    B get(A a);
  }

  static class PersistableThrowable {

    String className;

    String msg;

    String stacktrace;

    PersistableThrowable() {
    }

    PersistableThrowable(Throwable e) {
      if (e == null)
        className = "Crazy Null Error";
      else {
        className = getClassName(e).replace('/', '.');
        msg = e.getMessage();
        stacktrace = getStackTrace_noRecord(e);
      }
    }

    public String toString() {
      return nempty(msg) ? className + ": " + msg : className;
    }
  }

  static class MMOPattern {

    static class Phrase extends MMOPattern implements IFieldsToList {

      String phrase;

      boolean quoted = false;

      Phrase() {
      }

      Phrase(String phrase, boolean quoted) {
        this.quoted = quoted;
        this.phrase = phrase;
      }

      public String toString() {
        return shortClassName(this) + "(" + phrase + ", " + quoted + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof Phrase))
          return false;
        Phrase __1 = (Phrase) o;
        return eq(phrase, __1.phrase) && eq(quoted, __1.quoted);
      }

      public int hashCode() {
        int h = -1905095975;
        h = boostHashCombine(h, _hashCode(phrase));
        h = boostHashCombine(h, _hashCode(quoted));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { phrase, quoted };
      }
    }

    static class And extends MMOPattern implements IFieldsToList {

      List<MMOPattern> l;

      And() {
      }

      And(List<MMOPattern> l) {
        this.l = l;
      }

      public String toString() {
        return shortClassName(this) + "(" + l + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof And))
          return false;
        And __2 = (And) o;
        return eq(l, __2.l);
      }

      public int hashCode() {
        int h = 65975;
        h = boostHashCombine(h, _hashCode(l));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { l };
      }
    }

    static class Or extends MMOPattern implements IFieldsToList {

      List<MMOPattern> l;

      Or() {
      }

      Or(List<MMOPattern> l) {
        this.l = l;
      }

      public String toString() {
        return shortClassName(this) + "(" + l + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof Or))
          return false;
        Or __3 = (Or) o;
        return eq(l, __3.l);
      }

      public int hashCode() {
        int h = 2563;
        h = boostHashCombine(h, _hashCode(l));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { l };
      }
    }

    static class Not extends MMOPattern implements IFieldsToList {

      MMOPattern p;

      Not() {
      }

      Not(MMOPattern p) {
        this.p = p;
      }

      public String toString() {
        return shortClassName(this) + "(" + p + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof Not))
          return false;
        Not __4 = (Not) o;
        return eq(p, __4.p);
      }

      public int hashCode() {
        int h = 78515;
        h = boostHashCombine(h, _hashCode(p));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { p };
      }
    }

    static class Weighted extends MMOPattern implements IFieldsToList {

      static final String _fieldOrder = "weight p";

      double weight;

      MMOPattern p;

      Weighted() {
      }

      Weighted(double weight, MMOPattern p) {
        this.p = p;
        this.weight = weight;
      }

      public String toString() {
        return shortClassName(this) + "(" + weight + ", " + p + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof Weighted))
          return false;
        Weighted __5 = (Weighted) o;
        return weight == __5.weight && eq(p, __5.p);
      }

      public int hashCode() {
        int h = -446368457;
        h = boostHashCombine(h, _hashCode(weight));
        h = boostHashCombine(h, _hashCode(p));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { weight, p };
      }
    }

    static class StartOfLine extends MMOPattern implements IFieldsToList {

      MMOPattern p;

      StartOfLine() {
      }

      StartOfLine(MMOPattern p) {
        this.p = p;
      }

      public String toString() {
        return shortClassName(this) + "(" + p + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof StartOfLine))
          return false;
        StartOfLine __6 = (StartOfLine) o;
        return eq(p, __6.p);
      }

      public int hashCode() {
        int h = -326863539;
        h = boostHashCombine(h, _hashCode(p));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { p };
      }
    }

    static class EndOfLine extends MMOPattern implements IFieldsToList {

      MMOPattern p;

      EndOfLine() {
      }

      EndOfLine(MMOPattern p) {
        this.p = p;
      }

      public String toString() {
        return shortClassName(this) + "(" + p + ")";
      }

      public boolean equals(Object o) {
        if (!(o instanceof EndOfLine))
          return false;
        EndOfLine __7 = (EndOfLine) o;
        return eq(p, __7.p);
      }

      public int hashCode() {
        int h = -810372346;
        h = boostHashCombine(h, _hashCode(p));
        return h;
      }

      public Object[] _fieldsToList() {
        return new Object[] { p };
      }
    }
  }

  static abstract class F1<A, B> {

    abstract B get(A a);
  }

  static class Pair<A, B> implements Comparable<Pair<A, B>> {

    A a;

    B b;

    Pair() {
    }

    Pair(A a, B b) {
      this.b = b;
      this.a = a;
    }

    public int hashCode() {
      return hashCodeFor(a) + 2 * hashCodeFor(b);
    }

    public boolean equals(Object o) {
      if (o == this)
        return true;
      if (!(o instanceof Pair))
        return false;
      Pair t = (Pair) o;
      return eq(a, t.a) && eq(b, t.b);
    }

    public String toString() {
      return "<" + a + ", " + b + ">";
    }

    public int compareTo(Pair<A, B> p) {
      if (p == null)
        return 1;
      int i = ((Comparable<A>) a).compareTo(p.a);
      if (i != 0)
        return i;
      return ((Comparable<B>) b).compareTo(p.b);
    }
  }

  static class Not<A> implements IFieldsToList, Transformable, Visitable {

    A a;

    Not() {
    }

    Not(A a) {
      this.a = a;
    }

    public String toString() {
      return shortClassName(this) + "(" + a + ")";
    }

    public boolean equals(Object o) {
      if (!(o instanceof Not))
        return false;
      Not __0 = (Not) o;
      return eq(a, __0.a);
    }

    public int hashCode() {
      int h = 78515;
      h = boostHashCombine(h, _hashCode(a));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { a };
    }

    public Object transformUsing(IF1 f) {
      return new Not((A) f.get(a));
    }

    public void visitUsing(IVF1 f) {
      f.get(a);
    }

    Boolean get(Object o) {
      return not((Boolean) callF(a, o));
    }
  }

  static interface IFieldsToList {

    Object[] _fieldsToList();
  }

  static class And<A> implements IFieldsToList, Transformable, Visitable {

    A a;

    A b;

    And() {
    }

    And(A a, A b) {
      this.b = b;
      this.a = a;
    }

    public String toString() {
      return shortClassName(this) + "(" + a + ", " + b + ")";
    }

    public boolean equals(Object o) {
      if (!(o instanceof And))
        return false;
      And __0 = (And) o;
      return eq(a, __0.a) && eq(b, __0.b);
    }

    public int hashCode() {
      int h = 65975;
      h = boostHashCombine(h, _hashCode(a));
      h = boostHashCombine(h, _hashCode(b));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { a, b };
    }

    public Object transformUsing(IF1 f) {
      return new And((A) f.get(a), (A) f.get(b));
    }

    public void visitUsing(IVF1 f) {
      f.get(a);
      f.get(b);
    }
  }

  static interface IVF1<A> {

    void get(A a);
  }

  static interface Visitable {

    void visitUsing(IVF1 f);
  }

  static interface Transformable {

    Object transformUsing(IF1 f);
  }

  static boolean isAbstract(Class c) {
    return (c.getModifiers() & Modifier.ABSTRACT) != 0;
  }

  static boolean isAbstract(Method m) {
    return (m.getModifiers() & Modifier.ABSTRACT) != 0;
  }

  static boolean reflection_isForbiddenMethod(Method m) {
    return m.getDeclaringClass() == Object.class && eqOneOf(m.getName(), "finalize", "clone", "registerNatives");
  }

  static Set<Class> allInterfacesImplementedBy(Class c) {
    if (c == null)
      return null;
    HashSet<Class> set = new HashSet();
    allInterfacesImplementedBy_find(c, set);
    return set;
  }

  static void allInterfacesImplementedBy_find(Class c, Set<Class> set) {
    if (c.isInterface() && !set.add(c))
      return;
    do {
      for (Class intf : c.getInterfaces()) allInterfacesImplementedBy_find(intf, set);
    } while ((c = c.getSuperclass()) != null);
  }

  static Method findMethod(Object o, String method, Object... args) {
    return findMethod_cached(o, method, args);
  }

  static boolean findMethod_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 Method findStaticMethod(Class c, String method, Object... args) {
    Class _c = c;
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (!m.getName().equals(method))
          continue;
        if ((m.getModifiers() & Modifier.STATIC) == 0 || !findStaticMethod_checkArgs(m, args))
          continue;
        return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  static boolean findStaticMethod_checkArgs(Method m, Object[] args) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length)
      return false;
    for (int i = 0; i < types.length; i++) if (!(args[i] == null || isInstanceX(types[i], args[i])))
      return false;
    return true;
  }

  static <A, B> LinkedHashMap<A, B> cloneLinkedHashMap(Map<A, B> map) {
    return map == null ? new LinkedHashMap() : new LinkedHashMap(map);
  }

  static List<String> quoteAll(Collection<String> l) {
    List<String> x = new ArrayList();
    for (String s : l) x.add(quote(s));
    return x;
  }

  static int _hashCode(Object a) {
    return a == null ? 0 : a.hashCode();
  }

  static boolean arraysEqual(Object[] a, Object[] b) {
    if (a.length != b.length)
      return false;
    for (int i = 0; i < a.length; i++) if (neq(a[i], b[i]))
      return false;
    return true;
  }

  static String shortClassName(Object o) {
    if (o == null)
      return null;
    Class c = o instanceof Class ? (Class) o : o.getClass();
    String name = c.getName();
    return shortenClassName(name);
  }

  static int boostHashCombine(int a, int b) {
    return a ^ (b + 0x9e3779b9 + (a << 6) + (a >> 2));
  }

  static int hashCodeFor(Object a) {
    return a == null ? 0 : a.hashCode();
  }

  static Boolean not(Boolean b) {
    return b == null ? null : !b;
  }

  static Method findMethod_cached(Object o, String method, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        _MethodCache cache = callOpt_getCache(((Class) o));
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          for (Method m : methods) if (isStaticMethod(m) && findMethod_checkArgs(m, args, false))
            return m;
        return null;
      } else {
        _MethodCache cache = callOpt_getCache(o.getClass());
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          for (Method m : methods) if (findMethod_checkArgs(m, args, false))
            return m;
        return null;
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static String quote(Object o) {
    if (o == null)
      return "null";
    return quote(str(o));
  }

  static String quote(String s) {
    if (s == null)
      return "null";
    StringBuilder out = new StringBuilder((int) (l(s) * 1.5 + 2));
    quote_impl(s, out);
    return out.toString();
  }

  static void quote_impl(String s, StringBuilder out) {
    out.append('"');
    int l = s.length();
    for (int i = 0; i < l; i++) {
      char c = s.charAt(i);
      if (c == '\\' || c == '"')
        out.append('\\').append(c);
      else if (c == '\r')
        out.append("\\r");
      else if (c == '\n')
        out.append("\\n");
      else if (c == '\t')
        out.append("\\t");
      else if (c == '\0')
        out.append("\\0");
      else
        out.append(c);
    }
    out.append('"');
  }

  static String shortenClassName(String name) {
    if (name == null)
      return null;
    int i = lastIndexOf(name, "$");
    if (i < 0)
      i = lastIndexOf(name, ".");
    return i < 0 ? name : substring(name, i + 1);
  }

  static int lastIndexOf(String a, String b) {
    return a == null || b == null ? -1 : a.lastIndexOf(b);
  }

  static int lastIndexOf(String a, char b) {
    return a == null ? -1 : a.lastIndexOf(b);
  }

  static <A> int lastIndexOf(List<A> l, int i, A a) {
    if (l == null)
      return -1;
    for (i = min(l(l), i) - 1; i >= 0; i--) if (eq(l.get(i), a))
      return i;
    return -1;
  }

  static <A> int lastIndexOf(List<A> l, A a) {
    if (l == null)
      return -1;
    for (int i = l(l) - 1; i >= 0; i--) if (eq(l.get(i), a))
      return i;
    return -1;
  }
}