import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
import java.math.*;
public class main {
// adapters are immutable! (plus returns a modified clone)
abstract static class Adapter {
  abstract boolean canMatch(String in, String out);
  Adapter plus(String in, String out) { return this; }
  String get(String in) { return in; }
  double size() { return 0; }
}

static class WordAdapter extends Adapter {
  Map<String, String> wordMap = new TreeMap<String, String>();
  
  List<String> tok(String s) {
    return nlTok2(dropPunctuation2(s));
  }
  
  boolean canMatch(String in, String out) {
    List<String> t1 = tok(in), t2 = tok(out);
    return l(t1) == l(t2);
  }
  
  Adapter plus(String in, String out) {
    List<String> t1 = tok(in), t2 = tok(out);
    if (l(t1) != l(t2)) return this;
    
    WordAdapter a = (WordAdapter) ( nuObject(getClass()));
    a.wordMap = cloneMap(wordMap);
    for (int i = 1; i < l(t1); i += 2) {
      String w1 = t1.get(i), w2 = t2.get(i);
      if (!eqic(w1, w2))
        // just overwrite - be flexible!
        a.wordMap.put(w1.toLowerCase(), w2.toLowerCase());
    }
    return a;
  }
  
  String get(String s) {
    List<String> tok = nlTok2(s);
    for (int i = 1; i < l(tok); i += 2) {
      String w = lookupToken(tok.get(i));
      if (nempty(w))
        tok.set(i, w);
    }
    return join(tok);
  }
  
  String lookupToken(String s) {
    return wordMap.get(s.toLowerCase());
  }
  
  double size() {
    return l(wordMap);
  }
  
  public String toString() {
    return structure(wordMap);
  }
}
 // WordAdapter

static boolean adapt_debug;

// put func {}'s returning a string in there
// not using _log parameter anymore
static void makeGenerators(List<Gen> l, List<String> _log) {
  gen(l, new Object() { Object get() { return  "3" ; }
  public String toString() { return "\"3\""; }});
  gen(l, "plus1", new Object() { Object get() { return  parseLong(gI())+1 ; }
  public String toString() { return "parseLong(gI())+1"; }});
  gen(l, "delta", new Object() { Object get() { return  parseLong(g0())*2-parseLong(g1()) ; }
  public String toString() { return "parseLong(g0())*2-parseLong(g1())"; }});
  gen(l, "delta unicode", new Object() { Object get() { 
    String a = g1(), b = g0();
    if (l(a) == 1 && l(b) == 1)
      return intToChar(charToInt(b)*2-charToInt(a)); return null;
   }
  public String toString() { return "S a = g1(), b = g0();\n    if (l(a) == 1 && l(b) == 1)\n      ret intToChar(charToInt(b)*2-charToInt(a));\n    null;"; }});
  gen(l, "exponential", new Object() { Object get() { return  sqr(parseLong(g0()))/parseLong(g1()) ; }
  public String toString() { return "sqr(parseLong(g0()))/parseLong(g1())"; }});
  gen(l, "assoc", gOneAssoc());
  gen(l, "adjective magic", new Object() { Object get() { return 
    lineAbove(findAdjectiveComment(findAdjective()))
  ; }
  public String toString() { return "lineAbove(findAdjectiveComment(findAdjective()))"; }});
  gen(l, "complete line", new Object() { Object get() { return 
    gSearchNeqNoSystem(new Object() { Object get(String s) { return  startsWithIgnoreCase(s, gI()) ; }
  public String toString() { return "startsWithIgnoreCase(s, gI())"; }})
  ; }
  public String toString() { return "gSearchNeqNoSystem(new O { O get(S s) { ret  startsWithIgnoreCase(s, gI()) ; }\n  public S toString() { ret \"startsWithIgnoreCase(s, gI())\"; }})"; }});
  gen(l, "longest prefix match -> answer", new Object() { Object get() { return 
    lineBelow(gLongestPrefixMatchNeqIdx(gI()))
  ; }
  public String toString() { return "lineBelow(gLongestPrefixMatchNeqIdx(gI()))"; }});
  gen(l, "word search", new Object() { Object get() { return 
    gSearchNeqNoSystem(new Object() { Object get(String s) { return  match(gI(), s) ; }
  public String toString() { return "match(gI(), s)"; }})
  ; }
  public String toString() { return "gSearchNeqNoSystem(new O { O get(S s) { ret  match(gI(), s) ; }\n  public S toString() { ret \"match(gI(), s)\"; }})"; }});
  gen(l, "raw string search", new Object() { Object get() { return 
    gSearchNeqNoSystem(new Object() { Object get(String s) { return  containsIgnoreCase(s, gI()) ; }
  public String toString() { return "containsIgnoreCase(s, gI())"; }})
  ; }
  public String toString() { return "gSearchNeqNoSystem(new O { O get(S s) { ret  containsIgnoreCase(s, gI()) ; }\n  public S toString() { ret \"containsIgnoreCase(s, gI())\"; }})"; }});
  gen(l, "raw string search (!java)", new Object() { Object get() { return 
    gSearchNeqNoSystem(new Object() { Object get(String s) { return  s.startsWith("!java") && containsIgnoreCase(s, gI()) ; }
  public String toString() { return "s.startsWith(\"!java\") && containsIgnoreCase(s, gI())"; }})
  ; }
  public String toString() { return "gSearchNeqNoSystem(new O { O get(S s) { ret  s.startsWith(\"!java\") && containsIgnoreCase(s, gI()) ; }\n  public S toString() { ret \"s.startsWith(\\\"!java\\\") && containsIgnoreCase(s, gI())\"; }})"; }});
  gen(l, "yes/no from java", new Object() { Object get() { 
    List<String> tok = javaTok(gI());
    if (contains(tok, "t")) return "yes";
    if (contains(tok, "f")) return "no"; return null;
   }
  public String toString() { return "L<S> tok = javaTok(gI());\n    if (contains(tok, \"t\")) ret \"yes\";\n    if (contains(tok, \"f\")) ret \"no\";\n    null;"; }});
  gen(l, "learned", new Object() { Object get() { 
    for (List<String> learn : gLearns()) {
      if (l(learn) >= 2 && match(first(learn), gI()))
        { String _a_1 = lastNonSystemLine(learn); if (!empty(_a_1)) return _a_1; }
    } return null;
   }
  public String toString() { return "for (L<S> learn : gLearns()) {\n      if (l(learn) >= 2 && match(first(learn), gI()))\n        try answer lastNonSystemLine(learn);\n    }\n    null;"; }});
  gen(l, "learned (single step)", new Object() { Object get() { 
    for (List<String> learn : gLearns()) {
      for (int i = 0; i < l(learn)-1; i++)
        if (match(learn.get(i), gI()))
          return learn.get(i+1);
    } return null;
   }
  public String toString() { return "for (L<S> learn : gLearns()) {\n      for (int i = 0; i < l(learn)-1; i++)\n        if (match(learn.get(i), gI()))\n          ret learn.get(i+1);\n    }\n    null;"; }});
  
  gen(l, "learned (single step 2)", new Object() { Object get() { 
    thislearn: for (List<String> learn : gLearns()) {
      List<String> log = gLog();
      int j = l(log)-l(learn)+1; // TODO: wrong logic
      if (j < 0) return null;
      for (int i = 0; i < l(learn)-1; i++)
        if (!match(learn.get(i), log.get(j+i)))
          break thislearn;
      return last(learn); // all entries match
    } return null;
   }
  public String toString() { return "thislearn: for (L<S> learn : gLearns()) {\n      L<S> log = gLog();\n      int j = l(log)-l(learn)+1; // TODO: wrong logic\n      if (j < 0) null;\n      for (int i = 0; i < l(learn)-1; i++)\n        if (!match(learn.get(i), log.get(j+i)))\n          break thislearn;\n      ret last(learn); // all entries match\n    }\n    null;"; }});
  
  gen(l, "learned (single step 2, with adapter)", new Object() { Object get() { 
    List<String> log = gLog();
    String bestResult = null;
    double bestValue = 0;
    thislearn: for (List<String> learn : gLearns()) {
      if (adapt_debug) print("Testing learn: " + struct(learn));
      
      // j is starting point of match in log
      j: for (int j = l(log)-l(learn)+1; j < l(log); j++) try {
        if (adapt_debug) print("\nl(log)=" + l(log) + ", j=" + j);
        Adapter adapter = new WordAdapter();
        int k;
        for (k = j; k < l(log); k++) {
          String in = learn.get(k-j), out = log.get(k);
          if (adapt_debug) print(in + " => " + out);
          if (!adapter.canMatch(in, out)) {
            if (adapt_debug) print("Can't match");
            continue j;
          }
          adapter = adapter.plus(in, out);
          if (adapt_debug) printStructure("  ", adapter);
        }
        double v = adapter.size();
        if (bestResult == null || v < bestValue) {
          bestResult = adapter.get(learn.get(k-j));
          bestValue = v;
          if (adapt_debug) print("New best: " + formatDouble(bestValue, 1) + " -- " + bestResult);
        }
      } catch (Throwable __e) { printStackTrace(__e); }
    }
    return bestResult;
   }
  public String toString() { return "L<S> log = gLog();\n    S bestResult = null;\n    double bestValue = 0;\n    thislearn: for (L<S> learn : gLearns()) {\n      if (adapt_debug) print(\"Testing learn: \" + struct(learn));\n      \n      // j is starting point of match in log\n      j: for (int j = l(log)-l(learn)+1; j < l(log); j++) pcall {\n        if (adapt_debug) print(\"\\nl(log)=\" + l(log) + \", j=\" + j);\n        Adapter adapter = new WordAdapter();\n        int k;\n        for (k = j; k < l(log); k++) {\n          S in = learn.get(k-j), out = log.get(k);\n          if (adapt_debug) print(in + \" => \" + out);\n          if (!adapter.canMatch(in, out)) {\n            if (adapt_debug) print(\"Can't match\");\n            continue j;\n          }\n          adapter = adapter.plus(in, out);\n          if (adapt_debug) printStructure(\"  \", adapter);\n        }\n        double v = adapter.size();\n        if (bestResult == null || v < bestValue) {\n          bestResult = adapter.get(learn.get(k-j));\n          bestValue = v;\n          if (adapt_debug) print(\"New best: \" + formatDouble(bestValue, 1) + \" -- \" + bestResult);\n        }\n      }\n    }\n    ret bestResult;"; }});
  
  gen(l, "grow suffix", new Object() { Object get() { 
    String a = g1(), b = g0();
    if (b.startsWith(a))
      return b + b.substring(l(a)); return null;
   }
  public String toString() { return "S a = g1(), b = g0();\n    if (b.startsWith(a))\n      ret b + b.substring(l(a));\n    null;"; }});
  
  gen(l, "grow prefix", new Object() { Object get() { 
    String a = g1(), b = g0();
    return growPrefix(a, b);
   }
  public String toString() { return "S a = g1(), b = g0();\n    ret growPrefix(a, b);"; }});
  
  gen(l, "strip common prefix + grow prefix", new Object() { Object get() { 
    String a = g1(), b = g0();
    int l = lCommonPrefix(a, b);
    if (l == 0) return null;
    String s = growPrefix(a.substring(l), b.substring(l));
    if (empty(s)) return null;
    return a.substring(0, l) + s;
   }
  public String toString() { return "S a = g1(), b = g0();\n    int l = lCommonPrefix(a, b);\n    if (l == 0) null;\n    S s = growPrefix(a.substring(l), b.substring(l));\n    if (empty(s)) null;\n    ret a.substring(0, l) + s;"; }});
}

static String findAdjective() { return findAdjective(gI()); }

static String findAdjective(String s) {
  return findOneOfTheWords(s, "crazy", "nice");
}

static int findAdjectiveComment(final String adjective) {
  if (adjective == null) return -1;
  return gSearchIdx(new Object() { Object get(String s) { return 
    matchStart("that's", s) && find3(adjective, s)
  ; }
  public String toString() { return "matchStart(\"that's\", s) && find3(adjective, s)"; }});
}

static Object gOneAssoc() {
  return new Object() { Object get() { 
    List<String> log = genLog();
    for (int i = l(log)-2; i >= 0; i--)
      if (eqic(log.get(i), last(log)))
        return log.get(i+1); return null;
   }
  public String toString() { return "L<S> log = genLog();\n    for (int i = l(log)-2; i >= 0; i--)\n      if (eqic(log.get(i), last(log)))\n        ret log.get(i+1);\n    null;"; }};
}
static String struct(Object o) {
  return structure(o);
}
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 {
 
  return getClass(realm).getClassLoader().loadClass(classNameToVM(name));

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
static String gI() {
  return last(genLog());
}
static String gSearchNeqNoSystem(Object predicate) {
  return _get(genLog(), gSearchNeqNoSystemIdx(predicate));
}
// replacement for class JavaTok
// maybe incomplete, might want to add floating point numbers
// todo also: extended multi-line strings

static int javaTok_n, javaTok_elements;
static boolean javaTok_opt;

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

static List<String> javaTok(String s, List<String> existing) {
  ++javaTok_n;
  int nExisting = javaTok_opt && existing != null ? existing.size() : 0;
  List<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; String cc;
    
    // scan for whitespace
    while (j < l) {
      c = s.charAt(j);
      cc = s.substring(j, Math.min(j+2, l));
      if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
        ++j;
      else if (cc.equals("/*")) {
        do ++j; while (j < l && !s.substring(j, Math.min(j+2, l)).equals("*/"));
        j = Math.min(j+2, l);
      } else if (cc.equals("//")) {
        do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
      } else
        break;
    }
    
    if (n < nExisting && javaTok_isCopyable(existing.get(n), s, i, j))
      tok.add(existing.get(n));
    else
      tok.add(quickSubstring(s, i, j));
    ++n;
    i = j;
    if (i >= l) break;
    c = s.charAt(i); // cc is not needed in rest of loop body
    cc = s.substring(i, Math.min(i+2, l));

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

    if (n < nExisting && javaTok_isCopyable(existing.get(n), s, i, j))
      tok.add(existing.get(n));
    else
      tok.add(quickSubstring(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 javaTok(join(tok), tok);
}

static boolean javaTok_isCopyable(String t, String s, int i, int j) {
  return t.length() == j-i
    && s.regionMatches(i, t, 0, j-i); // << could be left out, but that's brave
}
static int lCommonPrefix(String a, String b) {
  int i = 0;
  while (i < a.length() && i < b.length() && a.charAt(i) == b.charAt(i))
    ++i;
  return i;
}

static String lineAbove(int i) {
  return get(genLog(), i-1);
}
// reduced NL parsing without quoted strings and some other stuff

static List<String> nlTok2(String s) {
  List<String> tok = new ArrayList<String>();
  int l = s.length();
  
  int i = 0;
  while (i < l) {
    int j = i;
    char c;
    
    // scan for whitespace
    while (j < l) {
      c = s.charAt(j);
      if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
        ++j;
      else
        break;
    }
    
    tok.add(s.substring(i, j));
    i = j;
    if (i >= l) break;
    c = s.charAt(i);

    // scan for non-whitespace
    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
      ++j;

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

static String lineBelow(int i) {
  return get(genLog(), i+1);
}
static boolean empty(Collection c) {
  return isEmpty(c);
}

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

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

static 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);
  return false;
}
// assumes the function returns toString()
static void gen(List<Gen> l, Object func) {
  l.add(new Gen(str(func), func));
}

static void gen(List<Gen> l, String name, Object func) {
  l.add(new Gen(name, func));
}

static void gen(List<Gen> l, int line, Object func) {
  gen(l, str(line), func);
}

static void gen(List<Gen> l, Quine q) {
  gen(l, q.text, q.value);
}

  static boolean find3(String pat, String s) {
    return find3(pat, s, null);
  }
  
  static boolean find3(String pat, String s, Matches matches) {
    List<String> tokpat = parse3(pat), toks = parse3(s);
    String[] m = find2(tokpat, toks);
    //print(structure(tokpat) + " on " + structure(toks) + " => " + structure(m));
    if (m == null)
      return false;
    else {
      if (matches != null) matches.m = m;
      return true;
    }
  }
static long sqr(long l) {
  return l*l;
}
  static boolean matchStart(String pat, String s) {
    return matchStart(pat, s, null);
  }
  
  // matches are as you expect, plus an extra item for the rest string
  static boolean matchStart(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, toks.subList(0, tokpat.size()));
    //print(structure(tokpat) + " on " + structure(toks) + " => " + structure(m));
    if (m == null)
      return false;
    else {
      if (matches != null) {
        matches.m = new String[m.length+1];
        arraycopy(m, matches.m);
        matches.m[m.length] = join(toks.subList(tokpat.size(), toks.size())); // for Matches.rest()
      }
      return true;
    }
  }
  public static String join(String glue, Iterable<String> strings) {
    StringBuilder buf = new StringBuilder();
    Iterator<String> i = strings.iterator();
    if (i.hasNext()) {
      buf.append(i.next());
      while (i.hasNext())
        buf.append(glue).append(i.next());
    }
    return buf.toString();
  }
  
  public static String join(String glue, String[] strings) {
    return join(glue, Arrays.asList(strings));
  }
  
  public static String join(Iterable<String> strings) {
    return join("", strings);
  }
  
  public static String join(String[] strings) {
    return join("", strings);
  }

static void printStructure(String prefix, Object o) {
  print(prefix + structure(o));
}

static void printStructure(Object o) {
  print(structure(o));
}

static String findOneOfTheWords(String s, String... words) {
  List<String> tok = nlTok(s);
  for (int i = 1; i < l(tok); i += 2)
    if (eqicOneOf(tok.get(i), words))
      return tok.get(i); return null;
}

  public static String formatDouble(double d, int digits) {
    String format = "0.";
    for (int i = 0; i < digits; i++) format += "#";
    return new java.text.DecimalFormat(format, new java.text.DecimalFormatSymbols(Locale.ENGLISH)).format(d);
  }

static String growPrefix(String a, String b) {
  if (b.endsWith(a))
    return b.substring(0, l(b)-l(a)) + b; return null;
}
static <A, B> Map<A, B> cloneMap(Map<A, B> map) {
  // assume mutex is equal to collection, which will be true unless you explicitly pass a mutex to synchronizedList() which no one ever does.
  synchronized(map) {
    return new HashMap(map);
  }
}
static <A> A last(List<A> l) {
  return l.isEmpty() ? null : l.get(l.size()-1);
}
static boolean nempty(Collection c) {
  return !isEmpty(c);
}

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

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

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

static boolean match(String pat, String s, Matches matches) {
  return match3(pat, s, matches);
}

static boolean eqic(String a, String b) {
  if ((a == null) != (b == null)) return false;
  if (a == null) return true;
  return a.equalsIgnoreCase(b);
}
static String g0() {
  return last(genLog());
}
static String g1() {
  return nextToLast(genLog());
}
static boolean containsIgnoreCase(List<String> l, String s) {
  for (String x : l)
    if (eqic(x, s))
      return true;
  return false;
}

static boolean containsIgnoreCase(String[] l, String s) {
  for (String x : l)
    if (eqic(x, s))
      return true;
  return false;
}

static boolean containsIgnoreCase(String s, char c) {
  return indexOfIgnoreCase(s, String.valueOf(c)) >= 0;
}

static boolean containsIgnoreCase(String a, String b) {
  return indexOfIgnoreCase(a, b) >= 0;
}
static int l(Object[] array) {
  return array == null ? 0 : array.length;
}

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

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

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

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

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

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

static int l(Object o) {
  return l((List) o); // incomplete
}

static String lastNonSystemLine(List<String> l) {
  for (int i = l(l)-1; i >= 0; i--)
    if (!isSystemLine(l.get(i)))
      return l.get(i); return null;
}
static String structure(Object o) {
  HashSet refd = new HashSet();
  return structure_2(structure_1(o, 0, new IdentityHashMap(), refd), refd);
}

// leave to false, unless unstructure() breaks
static boolean structure_allowShortening = false;

static String structure_1(Object o, int stringSizeLimit, IdentityHashMap<Object, Integer> seen, HashSet<Integer> refd) {
  if (o == null) return "null";
  
  // these are never back-referenced (for readability)
  
  if (o instanceof String)
    return quote(stringSizeLimit != 0 ? shorten((String) o, stringSizeLimit) : (String) o);
    
  if (o instanceof BigInteger)
    return "bigint(" + o + ")";
  
  if (o instanceof Double)
    return "d(" + quote(str(o)) + ")";
    
  if (o instanceof Long)
    return o + "L";
  
  if (o instanceof Integer)
    return str(o);
    
  if (o instanceof Boolean)
    return ((Boolean) o).booleanValue() ? "t" : "f";
    
  if (o instanceof Character)
    return quoteCharacter((Character) o);
    
  if (o instanceof File)
    return "File " + quote(((File) o).getPath());
    
  // referencable objects follow
  
  Integer ref = seen.get(o);
  if (ref != null) {
    refd.add(ref);
    return "r" + ref;
  }
      
  ref = seen.size()+1;
  seen.put(o, ref);
  String r = "m" + ref + " "; // marker

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

  StringBuilder buf = new StringBuilder();
  
  if (o instanceof HashSet)
    return r + "hashset " + structure_1(new ArrayList((Set) o), stringSizeLimit, seen, refd);

  if (o instanceof TreeSet)
    return r + "treeset " + structure_1(new ArrayList((Set) o), stringSizeLimit, seen, refd);
  
  if (o instanceof Collection) {
    for (Object x : (Collection) o) {
      if (buf.length() != 0) buf.append(", ");
      buf.append(structure_1(x, stringSizeLimit, seen, refd));
    }
    return r + "[" + buf + "]";
  }
  
  if (o instanceof Map) {
    for (Object e : ((Map) o).entrySet()) {
      if (buf.length() != 0) buf.append(", ");
      buf.append(structure_1(((Map.Entry) e).getKey(), stringSizeLimit, seen, refd));
      buf.append("=");
      buf.append(structure_1(((Map.Entry) e).getValue(), stringSizeLimit, seen, refd));
    }
    return r + (o instanceof HashMap ? "hashmap" : "") + "{" + buf + "}";
  }
  
  if (o.getClass().isArray()) {
    int n = Array.getLength(o);
    for (int i = 0; i < n; i++) {
      if (buf.length() != 0) buf.append(", ");
      buf.append(structure_1(Array.get(o, i), stringSizeLimit, seen, refd));
    }
    return r + "array{" + buf + "}";
  }

  if (o instanceof Class)
    return r + "class(" + quote(((Class) o).getName()) + ")";
    
  if (o instanceof Throwable)
    return r + "exception(" + quote(((Throwable) o).getMessage()) + ")";
    
  if (o instanceof BitSet) {
    BitSet bs = (BitSet) o;
    for (int i = bs.nextSetBit(0); i >= 0; i = bs.nextSetBit(i+1)) {
      if (buf.length() != 0) buf.append(", ");
       buf.append(i);
    }
    return "bitset{" + buf + "}";
  }
    
  // Need more cases? This should cover all library classes...
  if (name.startsWith("java.") || name.startsWith("javax."))
    return r + String.valueOf(o);
    
  String shortName = o.getClass().getName().replaceAll("^main\\$", "");
  
  if (shortName.equals("Lisp")) {
    buf.append("l(" + structure_1(getOpt(o, "head"), stringSizeLimit, seen, refd));
    List args = (List) ( getOpt(o, "args"));
    if (nempty(args))
      for (int i = 0; i < l(args); i++) {
        buf.append(", ");
        Object arg = args.get(i);
        
        // sweet shortening
        if (arg != null && eq(arg.getClass().getName(), "main$Lisp") && isTrue(call(arg, "isEmpty")))
          arg = get(arg, "head");
          
        buf.append(structure_1(arg, stringSizeLimit, seen, refd));
      }
    buf.append(")");
    return r + str(buf);
  }
    
  int numFields = 0;
  String fieldName = "";
  if (shortName.equals("DynamicObject")) {
    shortName = (String) get(o, "className");
    Map<String, Object> fieldValues = (Map) get(o, "fieldValues");
    
    for (String _fieldName : fieldValues.keySet()) {
      fieldName = _fieldName;
      Object value = fieldValues.get(fieldName);
      if (value != null) {
        if (buf.length() != 0) buf.append(", ");
        buf.append(fieldName + "=" + structure_1(value, stringSizeLimit, seen, refd));
      }
      ++numFields;
   }
  } else {
    // regular class
    
    Class c = o.getClass();
    while (c != Object.class) {
      Field[] fields = c.getDeclaredFields();
      for (Field field : fields) {
        if ((field.getModifiers() & Modifier.STATIC) != 0)
          continue;
        fieldName = field.getName();
        
        // skip outer object reference
        if (fieldName.indexOf("$") >= 0) continue;
  
        Object value;
        try {
          field.setAccessible(true);
          value = field.get(o);
        } catch (Exception e) {
          value = "?";
        }
        
        // put special cases here...
    
        if (value != null) {
          if (buf.length() != 0) buf.append(", ");
          buf.append(fieldName + "=" + structure_1(value, stringSizeLimit, seen, refd));
        }
        ++numFields;
      }
      c = c.getSuperclass();
    }
  }
  
  String b = buf.toString();
  
  if (numFields == 1 && structure_allowShortening)
    b = b.replaceAll("^" + fieldName + "=", ""); // drop field name if only one
  String s = shortName;
  if (buf.length() != 0)
    s += "(" + b + ")";
  return r + s;
}

// drop unused markers
static String structure_2(String s, HashSet<Integer> refd) {
  List<String> tok = javaTok(s);
  StringBuilder out = new StringBuilder();
  for (int i = 1; i < l(tok); i += 2) {
    String t = tok.get(i);
    if (t.startsWith("m") && isInteger(t.substring(1))
      && !refd.contains(parseInt(t.substring(1))))
      continue;
    out.append(t).append(tok.get(i+1));
  }
  return str(out);
}

static boolean gLongestPrefixMatchNeqIdx_debug;

static int gLongestPrefixMatchNeqIdx(String line) {
  line = line.toLowerCase();
  if (gLongestPrefixMatchNeqIdx_debug)
    print("line=" + line);
  List<String> log = gLog();
  int best = -1, bestIdx = -1;
  for (int i = l(log)-1; i >= 0; i--) {
    String s = log.get(i).toLowerCase();
    { if (eq(s, line)) continue; }
    int n = l(commonPrefix(s, line));
    if (gLongestPrefixMatchNeqIdx_debug)
      print("i=" + i + ", n=" + n + ", line=" + quote(log.get(i)));
    if (n > best) {
      bestIdx = i;
      best = n;
    }
  }
  return bestIdx;
}
static List<String> dropPunctuation2(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)) /* && !dropPunctuation2_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 dropPunctuation2(String s) {
  return join(dropPunctuation(nlTok2(s)));
}
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.indexOf(c) >= 0;
}
static List<String> gLog() {
  return genLog();
}

static void gLog_set(List<String> log) {
  genLog_set(log);
}

static void gLog_clear() {
  genLog_clear();
}
static volatile StringBuffer local_log = new StringBuffer(); // not redirected
static volatile StringBuffer print_log = local_log; // might be redirected, e.g. to main bot

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

static boolean print_silent; // total mute if set

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

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

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

static void print(char c) {
  print(String.valueOf(c));
}

static void print_append(StringBuffer buf, String s, int max) {
  synchronized(buf) {
    buf.append(s);
    max /= 2;
    if (buf.length() > max) try {
      int newLength = max/2;
      int ofs = buf.length()-newLength;
      String newString = buf.substring(ofs);
      buf.setLength(0);
      buf.append("[...] ").append(newString);
    } catch (Exception e) {
      buf.setLength(0);
    }
  }
}
// accepts a string as predicate (then compares with "eq")
static int gSearchIdx(Object predicate) {
  return gSearchIdx(predicate, 0);
}

static int gSearchIdx(Object predicate, int startIdx) {
  if (predicate == null) return -1;
  if (predicate instanceof String) {
    final String _s = (String) predicate;
    predicate = new Object() { Object get(String s) { return  eq(s, _s) ; }
  public String toString() { return "eq(s, _s)"; }};
  }
  
  List<String> log = genLog();
  for (int i = l(log)-startIdx-1; i >= 0; i--)
    if (isTrue(callF(predicate, log.get(i))))
      return i;
  return -1;
}
static long parseLong(String s) {
  if (s == null) return 0;
  return Long.parseLong(dropSuffix("L", s));
}

static long parseLong(Object s) {
  return Long.parseLong((String) s);
}
static int charToInt(String s) {
  return empty(s) ? 0 : (int) s.charAt(0);
}

static int charToInt(char c) {
  return (int) c;
}
static char intToChar(int i) {
  return (char) i;
}
static Object nuObject(String className, Object... args) { try {
 
  return nuObject(Class.forName(className), args);

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

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

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

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

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

 static boolean nuObject_checkArgs(Class[] types, Object[] args, boolean debug) {
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++)
      if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
        if (debug)
          System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
        return false;
      }
    return true;
  }
static List<List<String>> gLearns() {
  List<String> log = gLog();
  List<List<String>> parts = new ArrayList();
  for (int i = l(log)-1; i >= 0; i--) {
    String cmd = log.get(i);
    { if (!(cmd.startsWith("!learn"))) continue; } // fancy new "unless" syntax!
    Matches mm = new Matches();
    { if (!(match("!learn *-*", log.get(i), mm))) continue; }
    int m = mm.psi(0), n = mm.psi(1);
    //print("i=" + i +", m=" + m + ", n=" + n);
    List<String> part = subList(log, i-n, i-m+1);
    parts.add(part);
  }
  return parts;
}
static boolean startsWithIgnoreCase(String a, String b) {
  return a != null && a.regionMatches(true, 0, b, 0, b.length());
}
static Object first(Object list) {
  return ((List) list).isEmpty() ? null : ((List) list).get(0);
}

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

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


// match2 matches multiple "*" (matches a single token) wildcards and zero or one "..." wildcards (matches multiple tokens)

static String[] match2(List<String> pat, List<String> tok) {
  // standard case (no ...)
  int i = pat.indexOf("...");
  if (i < 0) return match2_match(pat, tok);
  
  pat = new ArrayList<String>(pat); // We're modifying it, so copy first
  pat.set(i, "*");
  while (pat.size() < tok.size()) {
    pat.add(i, "*");
    pat.add(i+1, ""); // doesn't matter
  }
  
  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()) {
    /*if (debug)
      print("Size mismatch: " + structure(pat) + " vs " + structure(tok));*/
    return null;
  }
  for (int i = 1; i < pat.size(); i += 2) {
    String p = pat.get(i), t = tok.get(i);
    /*if (debug)
      print("Checking " + p + " against " + t);*/
    if (eq(p, "*"))
      result.add(t);
    else if (!equalsIgnoreCase(unquote(p), unquote(t))) // bold change - match quoted and unquoted now
      return null;
  }
  return result.toArray(new String[result.size()]);
}

static <A> A nextToLast(List<A> l) {
  return get(l, l(l)-2);
}
  // class Matches is added by #752
 
  static boolean match3(String pat, String s) {
    return match3(pat, s, null);
  }
  
  static boolean match3(String pat, String s, Matches matches) {
    if (s == null) return false;
    return match3(pat, parse3(s), matches);
  }
    
  static boolean match3(String pat, List<String> toks, Matches matches) {
    List<String> tokpat = parse3(pat);
    return match3(tokpat,toks,matches);
  }

  static boolean match3(List<String> tokpat, List<String> toks, Matches matches) {

    String[] m = match2(tokpat, toks);
    //print(structure(tokpat) + " on " + structure(toks) + " => " + structure(m));
    if (m == null)
      return false;
    else {
      if (matches != null) matches.m = m;
      return true;
    }
  }
static int gSearchNeqNoSystemIdx(Object predicate) {
  return gSearchNeqNoSystemIdx(predicate, 1); // no sense to start from 0
}

static int gSearchNeqNoSystemIdx(final Object predicate, int startIdx) {
  return gSearchIdx(new Object() { Object get(String s) { return 
    neq(s, gI()) && !isSystemLine(s) && isTrue(callF(predicate, s))
  ; }
  public String toString() { return "neq(s, gI()) && !isSystemLine(s) && isTrue(callF(predicate, s))"; }}, startIdx);
}
static Object callF(Object f, Object... args) {
  return callFunction(f, args);
}
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 {
 
  return getClass(realm).getClassLoader().loadClass(classNameToVM(name));

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
static boolean isInteger(String s) {
  return s != null && Pattern.matches("\\-?\\d+", s);
}
  static String quote(String s) {
    if (s == null) return "null";
    return "\"" + s.replace("\\", "\\\\").replace("\"", "\\\"").replace("\r", "\\r").replace("\n", "\\n") + "\"";
  }
  
  static String quote(long l) {
    return quote("" + l);
  }
  
  static String quote(char c) {
    return quote("" + c);
  }

static String shorten(String s, int max) {
  if (s == null) return "";
  return s.length() <= max ? s : s.substring(0, Math.min(s.length(), max)) + "...";
}
  public static String commonPrefix(String a, String b) {
    int i = 0;
    while (i < a.length() && i < b.length() && a.charAt(i) == b.charAt(i))
      ++i;
    return a.substring(0, i);
  }

static String quoteCharacter(char c) {
  if (c == '\'') return "'\\''";
  if (c == '\\') return "'\\\\'";
  return "'" + c + "'";
}

static ThreadLocal<List<String>> genLog_log;

static List<String> genLog() {
  genLog_init();
  List<String> log = genLog_log.get();
  /*if (log == null)
    log = (L) callOpt(creator(), "genLog");*/
  return assertNotNull("No log set for this thread", log);
}

static void genLog_set(List<String> log) {
  genLog_init();
  genLog_log.set(log);
}

static void genLog_clear() {
  genLog_init();
  genLog_log.set(null);
}

static void genLog_init() {
  if (genLog_log == null) {
    genLog_log = (ThreadLocal) getOpt(creator(), "genLog_log");
    if (genLog_log == null) genLog_log = new ThreadLocal();
  }
}
// extended over Class.isInstance() to handle primitive types
static boolean isInstanceX(Class type, Object arg) {
  if (type == boolean.class) return arg instanceof Boolean;
  if (type == int.class) return arg instanceof Integer;
  if (type == long.class) return arg instanceof Long;
  if (type == float.class) return arg instanceof Float;
  if (type == short.class) return arg instanceof Short;
  if (type == char.class) return arg instanceof Character;
  if (type == byte.class) return arg instanceof Byte;
  if (type == double.class) return arg instanceof Double;
  return type.isInstance(arg);
}
static String classNameToVM(String name) {
  return name.replace(".", "$");
}
static boolean eq(Object a, Object b) {
  if (a == null) return b == null;
  if (a.equals(b)) return true;
  if (a instanceof BigInteger) {
    if (b instanceof Integer) return a.equals(BigInteger.valueOf((Integer) b));
    if (b instanceof Long) return a.equals(BigInteger.valueOf((Long) b));
  }
  return false;
}
static String str(Object o) {
  return String.valueOf(o);
}
static boolean isSystemLine(String s) {
  return startsWith(s, "[system]");
}
static <A> A _get(List<A> l, int idx) {
  return idx >= 0 && idx < l(l) ? l.get(idx) : null;
}
static String quickSubstring(String s, int i, int j) {
  if (i == j) return "";
  return s.substring(i, j);
}
  static List<String> parse3(String s) {
    return dropPunctuation(javaTokPlusPeriod(s));
  }
static void arraycopy(Object[] a, Object[] b) {
  int n = min(a.length, b.length);
  for (int i = 0; i < n; i++)
    b[i] = a[i];
}

static void arraycopy(Object src, int srcPos, Object dest, int destPos, int n) {
  System.arraycopy(src, srcPos, dest, destPos, n);
}
// get purpose 1: access a list/array (safer version of x.get(y))

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

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

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

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

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

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

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

static Field get_findField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  throw new RuntimeException("Field '" + field + "' not found in " + c.getName());
}
// We dropped the "***" support here (use match3 for that)

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

static <A> List<A> subList(List<A> l, int startIndex, int endIndex) {
  startIndex = max(0, min(l(l), startIndex));
  endIndex = max(0, min(l(l), endIndex));
  if (startIndex > endIndex) return litlist();
  return l.subList(startIndex, endIndex);
}
static List<String> dropPunctuation_keep = litlist("*", "<", ">");

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

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

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

static boolean isEmpty(Map map) {
  return map == null || map.isEmpty();
}
static String dropSuffix(String suffix, String s) {
  return s.endsWith(suffix) ? s.substring(0, l(s)-l(suffix)) : s;
}
  static Object call(Object o) {
    return callFunction(o);
  }
  
  // varargs assignment fixer for a single string array argument
  static Object call(Object o, String method, String[] arg) {
    return call(o, method, new Object[] {arg});
  }
  
  static Object call(Object o, String method, Object... args) {
    try {
      if (o instanceof Class) {
        Method m = call_findStaticMethod((Class) o, method, args, false);
        m.setAccessible(true);
        return m.invoke(null, args);
      } else {
        Method m = call_findMethod(o, method, args, false);
        m.setAccessible(true);
        return m.invoke(o, args);
      }
    } catch (Exception e) {
      throw e instanceof RuntimeException ? (RuntimeException) e : new RuntimeException(e);
    }
  }

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

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

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

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

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


static int parseInt(String s) {
  return empty(s) ? 0 : Integer.parseInt(s);
}
static boolean isTrue(Object o) {
  return booleanValue(o);
}
static List<String> nlTok(String s) {
  return javaTokPlusPeriod(s);
}
static Object getOpt(Object o, String field) {
  if (o instanceof String) o = getBot ((String) o);
  if (o == null) return null;
  if (o instanceof Class) return getOpt((Class) o, field);
  
  if (o.getClass().getName().equals("main$DynamicObject"))
    return ((Map) getOpt_raw(o, "fieldValues")).get(field);
  
  if (o instanceof Map) return ((Map) o).get(field);
  
  return getOpt_raw(o, field);
}

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

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

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

static Field getOpt_findField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  return null;
}
static boolean eqicOneOf(String s, String... l) {
  for (String x : l) if (eqic(s, x)) return true; return false;
}
// works on lists and strings and null

static int indexOfIgnoreCase(Object a, Object b) {
  if (a == null) return -1;
  if (a instanceof String) {
     Matcher m = Pattern.compile((String) b, Pattern.CASE_INSENSITIVE + Pattern.LITERAL).matcher((String) a);
     if (m.find()) return m.start(); else return -1;
  }
  if (a instanceof List) {
    for (int i = 0; i < ((List) a).size(); i++) {
      Object o = ((List) a).get(i);
      if (o != null && ((String) o).equalsIgnoreCase((String) b))
        return i;
    }
    return -1;
  }
  throw fail("Unknown type: " + a);
}


static Object callFunction(Object f, Object... args) {
  if (f == null) return null;
  if (f instanceof Runnable) {
    ((Runnable) f).run();
    return null;
  } else if (f instanceof String)
    return call(mc(), (String) f, args);
  else
    return call(f, "get", args);
  //else throw fail("Can't call a " + getClassName(f));
}
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 Object getBot(String botID) {
  return callOpt(getMainBot(), "getBot", botID);
}

static boolean neq(Object a, Object b) {
  return !eq(a, b);
}
static boolean equalsIgnoreCase(String a, String b) {
  return a == null ? b == null : a.equalsIgnoreCase(b);
}
  static RuntimeException fail() {
    throw new RuntimeException("fail");
  }
  
  static RuntimeException fail(Object msg) {
    throw new RuntimeException(String.valueOf(msg));
  }
  
  static RuntimeException fail(String msg) {
    throw new RuntimeException(unnull(msg));
  }
   
  // disabled for now to shorten some programs 
  /*static RuntimeException fail(S msg, O... args) {
    throw new RuntimeException(format(msg, args));
  }*/
// This is made for NL parsing.
// It's javaTok extended with "..." token, "$n" and "#n" and
// special quotes (which are converted to normal ones).

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

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

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

static boolean booleanValue(Object o) {
  return eq(true, o);
}
static int min(int a, int b) {
  return Math.min(a, b);
}

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

static byte min(byte[] c) {
  byte x = 127;
  for (byte d : c) if (d < x) x = d;
  return x;
}
static <A> ArrayList<A> litlist(A... a) {
  return new ArrayList<A>(Arrays.asList(a));
}
  public static String unquote(String s) {
    if (s == null) return null;
    if (s.startsWith("[")) {
      int i = 1;
      while (i < s.length() && s.charAt(i) == '=') ++i;
      if (i < s.length() && s.charAt(i) == '[') {
        String m = s.substring(1, i);
        if (s.endsWith("]" + m + "]"))
          return s.substring(i+1, s.length()-i-1);
      }
    }
    
    if (s.startsWith("\"") /*&& s.endsWith("\"")*/ && s.length() > 1) {
      String st = s.substring(1, s.endsWith("\"") ? s.length()-1 : s.length());
      StringBuilder sb = new StringBuilder(st.length());
  
      for (int i = 0; i < st.length(); i++) {
        char ch = st.charAt(i);
        if (ch == '\\') {
          char nextChar = (i == st.length() - 1) ? '\\' : st
                  .charAt(i + 1);
          // Octal escape?
          if (nextChar >= '0' && nextChar <= '7') {
              String code = "" + nextChar;
              i++;
              if ((i < st.length() - 1) && st.charAt(i + 1) >= '0'
                      && st.charAt(i + 1) <= '7') {
                  code += st.charAt(i + 1);
                  i++;
                  if ((i < st.length() - 1) && st.charAt(i + 1) >= '0'
                          && st.charAt(i + 1) <= '7') {
                      code += st.charAt(i + 1);
                      i++;
                  }
              }
              sb.append((char) Integer.parseInt(code, 8));
              continue;
          }
          switch (nextChar) {
          case '\\':
              ch = '\\';
              break;
          case 'b':
              ch = '\b';
              break;
          case 'f':
              ch = '\f';
              break;
          case 'n':
              ch = '\n';
              break;
          case 'r':
              ch = '\r';
              break;
          case 't':
              ch = '\t';
              break;
          case '\"':
              ch = '\"';
              break;
          case '\'':
              ch = '\'';
              break;
          // Hex Unicode: u????
          case 'u':
              if (i >= st.length() - 5) {
                  ch = 'u';
                  break;
              }
              int code = Integer.parseInt(
                      "" + st.charAt(i + 2) + st.charAt(i + 3)
                              + st.charAt(i + 4) + st.charAt(i + 5), 16);
              sb.append(Character.toChars(code));
              i += 5;
              continue;
          default:
            ch = nextChar; // added by Stefan
          }
          i++;
        }
        sb.append(ch);
      }
      return sb.toString();      
    } else
      return s; // return original
  }
static WeakReference<Class> creator_class;

static Class creator() {
  return creator_class == null ? null : creator_class.get();
}
static int max(int a, int b) {
  return Math.max(a, b);
}

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

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

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

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

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

static byte max(byte[] c) {
  byte x = -128;
  for (byte d : c) if (d > x) x = d;
  return x;
}
static String[] toStringArray(List<String> list) {
  return list.toArray(new String[list.size()]);
}

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

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

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



  static String unnull(String s) {
    return s == null ? "" : s;
  }
  
  static <A> List<A> unnull(List<A> l) {
    return l == null ? emptyList() : l;
  }
  
  static Object[] unnull(Object[] a) {
    return a == null ? new Object[0] : a;
  }
static Object mainBot;

static Object getMainBot() {
  return mainBot;
}
static void assertTrue(Object o) {
  assertEquals(true, 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 Class mc() {
  return getMainClass();
}
  static Object callOpt(Object o, String method, Object... args) {
    try {
      if (o == null) return null;
      if (o instanceof Class) {
        Method m = callOpt_findStaticMethod((Class) o, method, args, false);
        if (m == null) return null;
        m.setAccessible(true);
        return m.invoke(null, args);
      } else {
        Method m = callOpt_findMethod(o, method, args, false);
        if (m == null) return null;
        m.setAccessible(true);
        return m.invoke(o, args);
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

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

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

        return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  static Method callOpt_findMethod(Object o, String method, Object[] args, boolean debug) {
    Class c = o.getClass();
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (debug)
          System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
        if (m.getName().equals(method) && callOpt_checkArgs(m, args, debug))
          return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  private static boolean callOpt_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 Class getMainClass() { try {
 
  return Class.forName("main");

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

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

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
static <A> A assertEquals(Object x, A y) {
  return assertEquals(null, x, y);
}

static <A> A assertEquals(String msg, Object x, A y) {
  if (!(x == null ? y == null : x.equals(y)))
    throw fail((msg != null ? msg + ": " : "") + structure(x) + " != " + structure(y));
  return y;
}
static List emptyList() {
  return new ArrayList();
  //ret Collections.emptyList();
}


static class Gen {
  String name;
  Object func;
  
  Gen() {}
  Gen(String name, Object func) {
  this.func = func;
  this.name = name;}
  
  public String toString() {
    return name;
  }
}

static class Quine<A> {
  String text;
  A value;
  
  Quine() {}
  Quine(String text, A value) {
  this.value = value;
  this.text = text;}
}

  static class Matches {
    String[] m;
    String get(int i) { return i < m.length ? m[i] : null; }
    String unq(int i) { return unquote(get(i)); }
    String fsi(int i) { return formatSnippetID(unq(i)); }
    String fsi() { return fsi(0); }
    String tlc(int i) { return unq(i).toLowerCase(); }
    boolean bool(int i) { return "true".equals(unq(i)); }
    String rest() { return m[m.length-1]; } // for matchStart
    int psi(int i) { return Integer.parseInt(unq(i)); }
  }


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

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

static void printStackTrace(Throwable e) {
  // we go to system.out now - system.err is nonsense
  print(getStackTrace(e));
}

static void printStackTrace() {
  printStackTrace(new Throwable());
}
static String fsi(String id) {
  return formatSnippetID(id);
}
public static long parseSnippetID(String snippetID) {
  long id = Long.parseLong(shortenSnippetID(snippetID));
  if (id == 0) throw fail("0 is not a snippet ID");
  return id;
}


static String shortenSnippetID(String snippetID) {
  if (snippetID.startsWith("#"))
    snippetID = snippetID.substring(1);
  String httpBlaBla = "http://tinybrain.de/";
  if (snippetID.startsWith(httpBlaBla))
    snippetID = snippetID.substring(httpBlaBla.length());
  return "" + parseLong(snippetID);
}
static String getStackTrace(Throwable throwable) {
  StringWriter writer = new StringWriter();
  throwable.printStackTrace(new PrintWriter(writer));
  return writer.toString();
}

}