Included in Circle by I., S.(nobin)

from math import*
t=atan2
while 1:a,b,c,d,e,f,g,h=map(int,raw_input().split());p=t(b-f,a-e)-t(d-f,c-e);print+(0>sin(p)*sin(p-t(b-h,a-g)+t(d-h,c-g)))

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

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return top