#!/usr/bin/env python
#######################################
#
#   So.. i was bored
#   I'll try some more of this later
#   Sat Mar 11 15:37:19 GMT 2006
#   jj _ gmail.com <- Jj
#   http://www.isgeek.net/
#######################################
import sys #gel guvf#rtg semlp
#\nzNXYgM3ajl2SgomS#d$sdH\
def do_it(__,___,_c_,_):#tor#base
    print chr(True<<5).join([_(__[___+(1<<1)+1],_c_)[1][:-1],_(__[___+~False],_c_)[1][:-1],_(__[___+2],_c_)[True][:-1][::~False]]).encode(__[-(___<<1)/~True+1].split(_c_)[1][::-1]+str(___+3))#rzbu gn
#qb abg#...
if __name__=='__main__': do_it(open(sys.argv[1>>1]).readlines(),10,eval(r'Y2hyKDM1KQ==\n'.decode("base64")),eval('bGFtYmRhIHgsdjp4LnNwbGl0KHYp\n'.decode("base64")))#dGhpcyBpcyB1c2VsZXNz\n