CK VIP Exploit 디코드

import sys
import re
 
 
def main(pecst, number):
    ck = []
    pecst = pecst.split(",")  
    for i in range(0, len(pecst)):
        ck.append(chr(int(pecst[i])-int(number)))
    print "".join(ck)
 
if __name__ == "__main__":
    arrays = raw_input("Input your suspected arrays : ")
    number = raw_input("number : ")
    main(arrays, number)