def check(n):
if n>0:
return(1)
else:
return(-1)
fdi=[-4,1,-5,-4,-3,-2,1,2,3,4,-10,-11] ; n=12
inf=[0]
for i in range(n-1):
if check(fdi[i]) == check(fdi[i+1]):
inf.append(0)
else:
inf.append(1)
print(inf)
ZGVmIGNoZWNrKG4pOgoJaWYgbj4wOgoJCXJldHVybigxKQoJZWxzZToKCQlyZXR1cm4oLTEpCgpmZGk9Wy00LDEsLTUsLTQsLTMsLTIsMSwyLDMsNCwtMTAsLTExXSA7IG49MTIKaW5mPVswXQpmb3IgaSBpbiByYW5nZShuLTEpOgoJaWYgY2hlY2soZmRpW2ldKSA9PSBjaGVjayhmZGlbaSsxXSk6CgkJaW5mLmFwcGVuZCgwKQoJZWxzZToKCQlpbmYuYXBwZW5kKDEpCgpwcmludChpbmYp
[0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0]