Modular Inverse by xsot

while 1:
 a,n=map(int,raw_input().split());x,y=1,0;m=n
 while n:a,n,x,y=n,a%n,y,x-a/n*y
 print x%m

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

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