#! /usr/bin/env python3
# -*- coding: utf-8 -*-
import readline
import code

try:
    input = raw_input
except:
    pass

banner = '''\x1b[91m

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           .;;;;;;;;;;;;            .ccccccccccccc;.                            
                                    ..............                              
                                                                                
                                                                                

\x1b[92m
I'm another elf in trouble,
Caught within this Python bubble.
\x1b[91m
Here I clench my merry elf fist -
Words get filtered by a black list!
\x1b[92m
Can't remember how I got stuck,
Try it - maybe you'll have more luck?
\x1b[91m
For this challenge, you are more fit.
Beat this challenge - Mark and Bag it!
\x1b[92m
-SugarPlum Mary
\x1b[0m
To complete this challenge, escape Python
and run ./i_escaped'''

def readfilter(*args,**kwargs):
    inline = input(*args,**kwargs)
    #warning: if any of your imports enable the blacklisted items you will expose the question to the test taker.
    for eachterm in whitelist:
        if inline.replace(" ","") == eachterm.replace(" ",""):
            return inline
    #warning: removing any of the following items from this list will likely expose the question.
    for eachterm in restricted_terms:
        if eachterm.replace(" ","") in inline.replace(" ",""):
            print("Use of the command {0} is prohibited for this question.".format(eachterm))
            return ""
    return inline

whitelist = []

if __name__ == "__main__":
    restricted_terms = ['import','pty', 'open','exec',"compile", "os.system", "subprocess.", "reload", "__builtins__" ,"__class__","__mro__" ]
    code.interact(banner=banner, readfunc=readfilter, local=locals())
    #eval("__im"+"port__('p'+'ty').s"+"pawn('/bin/bash')")