BUUCTF crypto 还原大师

# -*- coding: utf-8 -*-
#!/usr/bin/env python
import hashlib

#print hashlib.md5(s).hexdigest().upper()
k = 'TASC?O3RJMV?WDJKX?ZM'
for i in range(26):
temp1 = k.replace('?',str(chr(65+i)),1)
for j in range(26):
temp2 = temp1.replace('?',chr(65+j),1)
for n in range(26):
temp3 = temp2.replace('?',chr(65+n),1)
s = hashlib.md5(temp3.encode('utf8')).hexdigest().upper()
if s[:4] == 'E903':
print s

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