modules/trivia.py

   1 # Erebus IRC bot - Author: Erebus Team
   2 # trivia module
   3 # This file is released into the public domain; see http://unlicense.org/
   4
   5 # module info
   6 modinfo = {
   7         'author': 'Erebus Team',
   8         'license': 'public domain',
   9         'compatible': [1], # compatible module API versions
  10         'depends': [], # other modules required to work properly?
  11 }
  12
  13 # preamble
  14 import modlib
  15 lib = modlib.modlib(__name__)
  16 def modstart(parent, *args, **kwargs):
  17         state.gotParent(parent)
  18         lib.hookchan(state.db['chan'])(trivia_checkanswer) # we need parent for this. so it goes here.
  19         return lib.modstart(parent, *args, **kwargs)
  20 def modstop(*args, **kwargs):
  21         global state
  22         stop()
  23         state.closeshop()
  24         del state
  25         return lib.modstop(*args, **kwargs)
  26
  27 # module code
  28 import json, random, threading, re, time, datetime
  29
  30 try:
  31         import twitter
  32 except: pass # doesn't matter if we don't have twitter, updating the status just will fall through the try-except if so...
  33
  34 def findnth(haystack, needle, n): #http://stackoverflow.com/a/1884151
  35         parts = haystack.split(needle, n+1)
  36         if len(parts)<=n+1:
  37                 return -1
  38         return len(haystack)-len(parts[-1])-len(needle)
  39
  40 class TriviaState(object):
  41         def __init__(self, parent=None, pointvote=False):
  42                 if parent is not None:
  43                         self.gotParent(parent, pointvote)
  44
  45         def gotParent(self, parent, pointvote=False):
  46                 self.parent = parent
  47                 self.questionfile = self.parent.cfg.get('trivia', 'jsonpath')
  48                 self.db = json.load(open(self.questionfile, "r"))
  49                 self.chan = self.db['chan']
  50                 self.curq = None
  51                 self.nextq = None
  52                 self.steptimer = None
  53                 self.hintstr = None
  54                 self.hintanswer = None
  55                 self.hintsgiven = 0
  56                 self.revealpossibilities = None
  57                 self.gameover = False
  58                 self.missedquestions = 0
  59
  60                 if 'starttime' not in self.db or self.db['starttime'] is None:
  61                         self.db['starttime'] = time.time()
  62
  63                 if pointvote:
  64                         self.getchan().msg("Vote for the next round target points! Options: %s. Vote using !vote <choice>" % (', '.join([str(x) for x in self.db['targetoptions']])))
  65                         self.getchan().msg("You have %s seconds." % (self.db['votetimer']))
  66                         self.voteamounts = dict([(x, 0) for x in self.db['targetoptions']]) # make a dict {pointsoptionA: 0, pointsoptionB: 0, ...}
  67                         self.pointvote = threading.Timer(self.db['votetimer'], self.endPointVote)
  68                         self.pointvote.start()
  69                 else:
  70                         self.pointvote = None
  71
  72         def __del__(self):
  73                 self.closeshop()
  74         def closeshop(self):
  75                 if threading is not None and threading._Timer is not None and isinstance(self.steptimer, threading._Timer):
  76                         self.steptimer.cancel()
  77                 if json is not None and json.dump is not None:
  78                         json.dump(self.db, open(self.questionfile, "w"))#, indent=4, separators=(',', ': '))
  79
  80         def getchan(self):
  81                 return self.parent.channel(self.chan)
  82         def getbot(self):
  83                 return self.getchan().bot
  84
  85         def nexthint(self, hintnum):
  86                 answer = self.hintanswer
  87
  88                 if self.hintstr is None or self.revealpossibilities is None or self.reveal is None:
  89                         self.hintstr = list(re.sub(r'[a-zA-Z0-9]', '*', answer))
  90                         self.revealpossibilities = range(''.join(self.hintstr).count('*'))
  91                         self.reveal = int(''.join(self.hintstr).count('*') * (7/24.0))
  92
  93                 for i in range(self.reveal):
  94                         revealcount = random.choice(self.revealpossibilities)
  95                         revealloc = findnth(''.join(self.hintstr), '*', revealcount)
  96                         self.revealpossibilities.remove(revealcount)
  97                         self.hintstr[revealloc] = answer[revealloc]
  98                 self.parent.channel(self.chan).bot.msg(self.chan, "\00304,01Here's a hint: %s" % (''.join(self.hintstr)))
  99
 100                 self.hintsgiven += 1
 101
 102                 if hintnum < self.db['hintnum']:
 103                         self.steptimer = threading.Timer(self.db['hinttimer'], self.nexthint, args=[hintnum+1])
 104                         self.steptimer.start()
 105                 else:
 106                         self.steptimer = threading.Timer(self.db['hinttimer'], self.nextquestion, args=[True])
 107                         self.steptimer.start()
 108
 109         def doGameOver(self):
 110                 msg = self.getchan().msg
 111                 def person(num): return self.db['users'][self.db['ranks'][num]]['realnick']
 112                 def pts(num): return str(self.db['users'][self.db['ranks'][num]]['points'])
 113                 winner = person(0)
 114                 try:
 115                         msg("\00312THE GAME IS OVER!!!")
 116                         msg("THE WINNER IS: %s (%s)" % (person(0), pts(0)))
 117                         msg("2ND PLACE: %s (%s)" % (person(1), pts(1)))
 118                         msg("3RD PLACE: %s (%s)" % (person(2), pts(2)))
 119                         [msg("%dth place: %s (%s)" % (i+1, person(i), pts(i))) for i in range(3,10)]
 120                 except IndexError: pass
 121                 except Exception as e: msg("DERP! %r" % (e))
 122
 123                 if self.db['hofpath'] is not None and self.db['hofpath'] != '':
 124                         self.writeHof()
 125
 126                 self.db['users'] = {}
 127                 self.db['ranks'] = []
 128                 stop()
 129                 self.closeshop()
 130
 131                 try:
 132                         t = twitter.Twitter(auth=twitter.OAuth(self.getbot().parent.cfg.get('trivia', 'token'),
 133                                 self.getbot().parent.cfg.get('trivia', 'token_sec'),
 134                                 self.getbot().parent.cfg.get('trivia', 'con'),
 135                                 self.getbot().parent.cfg.get('trivia', 'con_sec')))
 136                         t.statuses.update(status="Round is over! The winner was %s" % (winner))
 137                 except: pass #don't care if errors happen updating twitter.
 138
 139                 self.__init__(self.parent, True)
 140
 141         def writeHof(self):
 142                 def person(num):
 143                         try: return self.db['users'][self.db['ranks'][num]]['realnick']
 144                         except: return "none"
 145                 def pts(num):
 146                         try: return str(self.db['users'][self.db['ranks'][num]]['points'])
 147                         except: return 0
 148
 149                 try:
 150                         f = open(self.db['hofpath'], 'rb+')
 151                         for i in range(self.db['hoflines']): #skip this many lines
 152                                 f.readline()
 153                         insertpos = f.tell()
 154                         fcontents = f.read()
 155                         f.seek(insertpos)
 156                         f.write((self.db['hofformat']+"\n") % {
 157                                 'date': time.strftime("%F", time.gmtime()),
 158                                 'duration': str(datetime.timedelta(seconds=time.time()-self.db['starttime'])),
 159                                 'targetscore': self.db['target'],
 160                                 'firstperson': person(0),
 161                                 'firstscore': pts(0),
 162                                 'secondperson': person(1),
 163                                 'secondscore': pts(1),
 164                                 'thirdperson': person(2),
 165                                 'thirdscore': pts(2),
 166                         })
 167                         f.write(fcontents)
 168                         return True
 169                 except Exception as e:
 170                         raise e
 171                         return False
 172                 finally:
 173                         f.close()
 174
 175         def endPointVote(self):
 176                 self.getchan().msg("Voting has ended!")
 177                 votelist = sorted(self.voteamounts.items(), key=lambda item: item[1]) #sort into list of tuples: [(option, number_of_votes), ...]
 178                 for i in range(len(votelist)-1):
 179                         item = votelist[i]
 180                         self.getchan().msg("%s place: %s (%s votes)" % (len(votelist)-i, item[0], item[1]))
 181                 self.getchan().msg("Aaaaand! The next round will be to \002%s\002 points! (%s votes)" % (votelist[-1][0], votelist[-1][1]))
 182
 183                 self.db['target'] = votelist[-1][0]
 184                 self.pointvote = None
 185
 186                 self.nextquestion() #start the game!
 187
 188         def nextquestion(self, qskipped=False, iteration=0):
 189                 if self.gameover == True:
 190                         return self.doGameOver()
 191                 if qskipped:
 192                         self.getchan().msg("\00304Fail! The correct answer was: %s" % (self.hintanswer))
 193                         self.missedquestions += 1
 194                 else:
 195                         self.missedquestions = 0
 196
 197                 if isinstance(self.steptimer, threading._Timer):
 198                         self.steptimer.cancel()
 199
 200                 self.hintstr = None
 201                 self.hintsgiven = 0
 202                 self.revealpossibilities = None
 203                 self.reveal = None
 204
 205                 if self.missedquestions > self.db['maxmissedquestions']:
 206                         stop()
 207                         self.getbot().msg(self.getchan(), "%d questions unanswered! Stopping the game.")
 208
 209                 if self.nextq is not None:
 210                         nextq = self.nextq
 211                         self.nextq = None
 212                 else:
 213                         nextq = random.choice(self.db['questions'])
 214
 215                 if nextq['question'][0] == "!":
 216                         nextq = specialQuestion(nextq)
 217
 218                 if iteration < 10 and 'lastasked' in nextq and nextq['lastasked'] - time.time() < 24*60*60:
 219                         return self.nextquestion(iteration=iteration+1) #short-circuit to pick another question
 220                 nextq['lastasked'] = time.time()
 221
 222                 nextq['answer'] = nextq['answer'].lower()
 223
 224                 qtext = "\00304,01Next up: "
 225                 qary = nextq['question'].split(None)
 226                 for qword in qary:
 227                         qtext += "\00304,01"+qword+"\00301,01"+chr(random.randrange(0x61,0x7A)) #a-z
 228                 self.getbot().msg(self.chan, qtext)
 229
 230                 self.curq = nextq
 231
 232                 if isinstance(self.curq['answer'], basestring): self.hintanswer = self.curq['answer']
 233                 else: self.hintanswer = random.choice(self.curq['answer'])
 234
 235                 self.steptimer = threading.Timer(self.db['hinttimer'], self.nexthint, args=[1])
 236                 self.steptimer.start()
 237
 238         def checkanswer(self, answer):
 239                 if self.curq is None:
 240                         return False
 241                 elif isinstance(self.curq['answer'], basestring):
 242                         return answer.lower() == self.curq['answer']
 243                 else: # assume it's a list or something.
 244                         return answer.lower() in self.curq['answer']
 245
 246         def addpoint(self, user_obj, count=1):
 247                 user_nick = str(user_obj)
 248                 user = user_nick.lower() # save this separately as we use both
 249                 if user in self.db['users']:
 250                         self.db['users'][user]['points'] += count
 251                 else:
 252                         self.db['users'][user] = {'points': count, 'realnick': user_nick, 'rank': len(self.db['ranks'])}
 253                         self.db['ranks'].append(user)
 254
 255                 self.db['ranks'].sort(key=lambda nick: self.db['users'][nick]['points'], reverse=True) #re-sort ranks, rather than dealing with anything more efficient
 256                 for i in range(0, len(self.db['ranks'])):
 257                         nick = self.db['ranks'][i]
 258                         self.db['users'][nick]['rank'] = i
 259
 260                 if self.db['users'][user]['points'] >= self.db['target']:
 261                         self.gameover = True
 262
 263                 return self.db['users'][user]['points']
 264
 265         def points(self, user):
 266                 user = str(user).lower()
 267                 if user in self.db['users']:
 268                         return self.db['users'][user]['points']
 269                 else:
 270                         return 0
 271
 272         def rank(self, user):
 273                 user = str(user).lower()
 274                 if user in self.db['users']:
 275                         return self.db['users'][user]['rank']+1
 276                 else:
 277                         return len(self.db['users'])+1
 278
 279         def targetuser(self, user):
 280                 if len(self.db['ranks']) == 0: return "no one is ranked!"
 281
 282                 user = str(user).lower()
 283                 if user in self.db['users']:
 284                         rank = self.db['users'][user]['rank']
 285                         if rank == 0:
 286                                 return "you're in the lead!"
 287                         else:
 288                                 return self.db['ranks'][rank-1]
 289                 else:
 290                         return self.db['ranks'][-1]
 291         def targetpoints(self, user):
 292                 if len(self.db['ranks']) == 0: return 0
 293
 294                 user = str(user).lower()
 295                 if user in self.db['users']:
 296                         rank = self.db['users'][user]['rank']
 297                         if rank == 0:
 298                                 return "N/A"
 299                         else:
 300                                 return self.db['users'][self.db['ranks'][rank-1]]['points']
 301                 else:
 302                         return self.db['users'][self.db['ranks'][-1]]['points']
 303
 304 state = TriviaState()
 305
 306 # we have to hook this in modstart, since we don't know the channel until then.
 307 def trivia_checkanswer(bot, user, chan, *args):
 308         line = ' '.join([str(arg) for arg in args])
 309         if state.checkanswer(line):
 310                 bot.msg(chan, "\00312%s\003 has it! The answer was \00312%s\003. New score: %d. Rank: %d. Target: %s (%s)." % (user, line, state.addpoint(user), state.rank(user), state.targetuser(user), state.targetpoints(user)))
 311                 if state.hintsgiven == 0:
 312                         bot.msg(chan, "\00312%s\003 got an extra point for getting it before the hints! New score: %d." % (user, state.addpoint(user)))
 313                 state.nextquestion()
 314
 315 @lib.hook('points', needchan=False)
 316 def cmd_points(bot, user, chan, realtarget, *args):
 317         if chan == realtarget: replyto = chan
 318         else: replyto = user
 319
 320         if len(args) != 0: who = args[0]
 321         else: who = user
 322
 323         bot.msg(replyto, "%s has %d points." % (who, state.points(who)))
 324
 325 @lib.hook('give', glevel=lib.STAFF, needchan=False)
 326 @lib.argsGE(1)
 327 def cmd_give(bot, user, chan, realtarget, *args):
 328         whoto = args[0]
 329         if len(args) > 1:
 330                 numpoints = int(args[1])
 331         else:
 332                 numpoints = 1
 333         balance = state.addpoint(whoto, numpoints)
 334
 335         bot.msg(chan, "%s gave %s %d points. New balance: %d" % (user, whoto, numpoints, balance))
 336
 337 @lib.hook('setnextid', glevel=1, needchan=False)
 338 def cmd_setnextid(bot, user, chan, realtarget, *args):
 339         try:
 340                 qid = int(args[0])
 341                 state.nextq = state.db['questions'][qid]
 342                 bot.msg(user, "Done. Next question is: %s" % (state.nextq['question']))
 343         except Exception as e:
 344                 bot.msg(user, "Error: %s" % (e))
 345
 346 @lib.hook('setnext', glevel=lib.STAFF, needchan=False)
 347 @lib.argsGE(1)
 348 def cmd_setnext(bot, user, chan, realtarget, *args):
 349         line = ' '.join([str(arg) for arg in args])
 350         linepieces = line.split('*')
 351         if len(linepieces) < 2:
 352                 bot.msg(user, "Error: need <question>*<answer>")
 353                 return
 354         question = linepieces[0].strip()
 355         answer = linepieces[1].strip()
 356         state.nextq = {'question':question,'answer':answer}
 357         bot.msg(user, "Done.")
 358
 359 @lib.hook('skip', glevel=1, needchan=False)
 360 def cmd_skip(bot, user, chan, realtarget, *args):
 361         state.nextquestion(True)
 362
 363 @lib.hook('start', needchan=False)
 364 def cmd_start(bot, user, chan, realtarget, *args):
 365         if chan == realtarget: replyto = chan
 366         else: replyto = user
 367
 368         if state.curq is None and state.pointvote is None:
 369                 state.nextquestion()
 370         elif state.pointvote is not None:
 371                 bot.msg(replyto, "There's a vote in progress!")
 372         else:
 373                 bot.msg(replyto, "Game is already started!")
 374
 375 @lib.hook('stop', glevel=1, needchan=False)
 376 def cmd_stop(bot, user, chan, realtarget, *args):
 377         if stop():
 378                 bot.msg(state.chan, "Game stopped by %s" % (user))
 379         else:
 380                 bot.msg(user, "Game isn't running.")
 381
 382 def stop():
 383         try:
 384                 if state.curq is not None:
 385                         state.curq = None
 386                         try:
 387                                 state.steptimer.cancel()
 388                         except Exception as e:
 389                                 print "!!! steptimer.cancel(): %s %r" % (e,e)
 390                         return True
 391                 else:
 392                         return False
 393         except NameError:
 394                 pass
 395
 396 @lib.hook('rank', needchan=False)
 397 def cmd_rank(bot, user, chan, realtarget, *args):
 398         if chan == realtarget: replyto = chan
 399         else: replyto = user
 400
 401         if len(args) != 0: who = args[0]
 402         else: who = user
 403
 404         bot.msg(replyto, "%s is in %d place (%s points). Target is: %s (%s points)." % (who, state.rank(who), state.points(who), state.targetuser(who), state.targetpoints(who)))
 405
 406 @lib.hook('top10', needchan=False)
 407 def cmd_top10(bot, user, chan, realtarget, *args):
 408         if len(state.db['ranks']) == 0:
 409                 return bot.msg(state.db['chan'], "No one is ranked!")
 410
 411         replylist = []
 412         for nick in state.db['ranks'][0:10]:
 413                 user = state.db['users'][nick]
 414                 replylist.append("%s (%s)" % (user['realnick'], user['points']))
 415         bot.msg(state.db['chan'], ', '.join(replylist))
 416
 417 @lib.hook('settarget', glevel=lib.ADMIN, needchan=False)
 418 def cmd_settarget(bot, user, chan, realtarget, *args):
 419         try:
 420                 state.db['target'] = int(args[0])
 421                 bot.msg(state.db['chan'], "Target has been changed to %s points!" % (state.db['target']))
 422
 423                 if state.pointvote is not None:
 424                         state.pointvote.cancel()
 425                         state.pointvote = None
 426                         bot.msg(state.db['chan'], "Vote has been cancelled!")
 427         except Exception as e:
 428                 print e
 429                 bot.msg(user, "Failed to set target.")
 430
 431 @lib.hook('vote', needchan=False)
 432 def cmd_vote(bot, user, chan, realtarget, *args):
 433         if state.pointvote is not None:
 434                 if int(args[0]) in state.voteamounts:
 435                         state.voteamounts[int(args[0])] += 1
 436                         bot.msg(user, "Your vote has been recorded.")
 437                 else:
 438                         bot.msg(user, "Sorry - that's not an option!")
 439         else:
 440                 bot.msg(user, "There's no vote in progress.")
 441
 442 @lib.hook('maxmissed', glevel=lib.ADMIN, needchan=False)
 443 def cmd_maxmissed(bot, user, chan, realtarget, *args):
 444         try:
 445                 state.db['maxmissedquestions'] = int(args[0])
 446                 bot.msg(state.db['chan'], "Max missed questions before round ends has been changed to %s." % (state.db['maxmissedquestions']))
 447         except:
 448                 bot.msg(user, "Failed to set maxmissed.")
 449
 450 @lib.hook('hinttimer', glevel=lib.ADMIN, needchan=False)
 451 def cmd_hinttimer(bot, user, chan, realtarget, *args):
 452         try:
 453                 state.db['hinttimer'] = float(args[0])
 454                 bot.msg(state.db['chan'], "Time between hints has been changed to %s." % (state.db['hinttimer']))
 455         except:
 456                 bot.msg(user, "Failed to set hint timer.")
 457
 458 @lib.hook('hintnum', glevel=lib.ADMIN, needchan=False)
 459 def cmd_hintnum(bot, user, chan, realtarget, *args):
 460         try:
 461                 state.db['hintnum'] = int(args[0])
 462                 bot.msg(state.db['chan'], "Max number of hints has been changed to %s." % (state.db['hintnum']))
 463         except:
 464                 bot.msg(user, "Failed to set hintnum.")
 465
 466 @lib.hook('findq', glevel=1, needchan=False)
 467 def cmd_findquestion(bot, user, chan, realtarget, *args):
 468         matches = [str(i) for i in range(len(state.db['questions'])) if state.db['questions'][i]['question'] == ' '.join(args)] #TODO looser equality check
 469         if len(matches) > 1:
 470                 bot.msg(user, "Multiple matches: %s" % (', '.join(matches)))
 471         elif len(matches) == 1:
 472                 bot.msg(user, "One match: %s" % (matches[0]))
 473         else:
 474                 bot.msg(user, "No match.")
 475
 476 @lib.hook('delq', glevel=lib.STAFF, needchan=False)
 477 @lib.hook('deleteq', glevel=lib.STAFF, needchan=False)
 478 def cmd_deletequestion(bot, user, chan, realtarget, *args):
 479         try:
 480                 backup = state.db['questions'][int(args[0])]
 481                 del state.db['questions'][int(args[0])]
 482                 bot.msg(user, "Deleted %s*%s" % (backup['question'], backup['answer']))
 483         except:
 484                 bot.msg(user, "Couldn't delete that question.")
 485
 486 @lib.hook('addq', glevel=lib.STAFF, needchan=False)
 487 def cmd_addquestion(bot, user, chan, realtarget, *args):
 488         line = ' '.join([str(arg) for arg in args])
 489         linepieces = line.split('*')
 490         if len(linepieces) < 2:
 491                 bot.msg(user, "Error: need <question>*<answer>")
 492                 return
 493         question = linepieces[0].strip()
 494         answer = linepieces[1].strip()
 495         state.db['questions'].append({'question':question,'answer':answer})
 496         bot.msg(user, "Done. Question is #%s" % (len(state.db['questions'])-1))
 497
 498
 499 @lib.hook('triviahelp', needchan=False)
 500 def cmd_triviahelp(bot, user, chan, realtarget, *args):
 501         if user.glevel == 0:
 502                 bot.msg(user,         "START")
 503                 bot.msg(user,         "TOP10")
 504                 bot.msg(user,         "POINTS    [<user>]")
 505                 bot.msg(user,         "RANK      [<user>]")
 506         else:
 507                 bot.msg(user,         "START                       (ANYONE )")
 508                 bot.msg(user,         "TOP10                       (ANYONE )")
 509                 bot.msg(user,         "POINTS    [<user>]          (ANYONE )")
 510                 bot.msg(user,         "RANK      [<user>]          (ANYONE )")
 511         if user.glevel >= 1:
 512                 bot.msg(user,         "SKIP                        (>=KNOWN)")
 513                 bot.msg(user,         "STOP                        (>=KNOWN)")
 514                 bot.msg(user,         "FINDQ     <question>        (>=KNOWN)")
 515                 if user.glevel >= lib.STAFF:
 516                         bot.msg(user,     "GIVE      <user> [<points>] (>=STAFF)")
 517                         bot.msg(user,     "SETNEXT   <q>*<a>           (>=STAFF)")
 518                         bot.msg(user,     "ADDQ      <q>*<a>           (>=STAFF)")
 519                         bot.msg(user,     "DELETEQ   <q>*<a>           (>=STAFF)  [aka DELQ]")
 520                         if user.glevel >= lib.ADMIN:
 521                                 bot.msg(user, "SETTARGET <points>          (>=ADMIN)")
 522                                 bot.msg(user, "MAXMISSED <questions>       (>=ADMIN)")
 523                                 bot.msg(user, "HINTTIMER <float seconds>   (>=ADMIN)")
 524                                 bot.msg(user, "HINTNUM   <hints>           (>=ADMIN)")
 525
 526 @lib.hooknum(417)
 527 def num_417(bot, textline):
 528         bot.msg(state.db['chan'], "Whoops, it looks like that question didn't quite go through! (E:417). Let's try another...")
 529         state.nextquestion(False)
 530
 531
 532 def specialQuestion(oldq):
 533         newq = {'question': oldq['question'], 'answer': oldq['answer']}
 534         qtype = oldq['question'].upper()
 535
 536         if qtype == "!MONTH":
 537                 newq['question'] = "What month is it currently (in UTC)?"
 538                 newq['answer'] = time.strftime("%B", time.gmtime()).lower()
 539         elif qtype == "!MATH+":
 540                 randnum1 = random.randrange(0, 11)
 541                 randnum2 = random.randrange(0, 11)
 542                 newq['question'] = "What is %d + %d?" % (randnum1, randnum2)
 543                 newq['answer'] = spellout(randnum1+randnum2)
 544         return newq
 545
 546 def spellout(num):
 547         return [
 548                 "zero", "one", "two", "three", "four", "five", "six", "seven", "eight",
 549                 "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen",
 550                 "sixteen", "seventeen", "eighteen", "nineteen", "twenty"
 551         ][num]