'''  A unit fraction contains 1 in the numerator. The decimal representation of the unit fractions
with denominators 2 to 10 are given:

1/2	= 	0.5
1/3	= 	0.(3)
1/4	= 	0.25
1/5	= 	0.2
1/6	= 	0.1(6)
1/7	= 	0.(142857)
1/8	= 	0.125
1/9	= 	0.(1)
1/10	= 	0.1
Where 0.1(6) means 0.166666..., and has a 1-digit recurring cycle. It can be seen that 1/7 has a 6-digit
recurring cycle.

Find the value of d < 1000 for which 1/d contains the longest recurring cycle in its decimal fraction part. '''

import re

frac = []
periodeLen = []
for i in range(0, 1000):
    if i == 0:
        frac.append('inf')
    else:
        frac.append(str(1/i))

for i in range(len(frac)):
    if i % 2 == 0 or i % 5 == 0:
        periodeLen.append(0)
    else:
        periodeLen.append(4)


# print(frac)
# print(periodeLen)