prolog/problems/trees/memberbt_2/common.py


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id = 135
group = 'trees'
number = 42
visible = True
facts = None

solution = '''\
memberBT(X, b(_, X, _)).
memberBT(X, b(L, _, _)) :-
  memberBT(X, L).
memberBT(X, b(_, _, R)) :-
  memberBT(X, R).
'''