Factorial by Bakuriu

import sys
t=""
for x in sys.stdin.readlines():
\x09x=int(x)
\x09if x==0:t+="1\n";continue
\x09for n in xrange(2,x):
\x09\x09x*=n
\x09t+=str(x)+"\n"
print t
\x09

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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return top