prolog/problems/lists/evenlen_1_+_oddlen_1/common.py


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# coding=utf-8

id = 116
number = 23
visible = True
facts = None

solution = '''\
evenlen([]).
evenlen([_,_|T]) :-
  evenlen(T).

oddlen([_]).
oddlen([_,_|T]) :-
  oddlen(T).
'''