Задание №86650 ЕГЭ Информатике

from itertools import *
c1 = '1357'
c2 = '2468'
count = 0
for i in product(c1,c2,c1,c2,c1,c2,c1,c2,c1):
    s = ''.join(i)
    if s.count('1') < 4 and s.count('2') < 4 and s.count('3') < 4 and s.count('4') < 4 and s.count('5') < 4 and s.count('6') < 4 and s.count('7') < 4 and s.count('8') < 4:
        count += 1 
print(count * 2)