PYTHON CODE

The sequence of integers is called 'the periodic last' when for some and large enough ,

. The smallest satisfying this property is called the length of the string period.

For example: 13,40,20,10,5,16,8,4,2,1,4,2,1 is 'the periodic last' and length of the period is 3.

For a natural number, , define a recursive sequence:

mod 80, when is even

mod 80, when is odd

(a) Write a function cycle_length(m), which for natural number , sets the length of the sequence defined in this way

(b) Write a function max_cycle_length(), which sets and returns the maximum length of sequence.

Please help me! :D

(annen dn+k = dn m