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# coding=utf-8
from operator import itemgetter
import prolog.engine
import server.problems
id = 148
number = 55
visible = True
facts = None
solution = '''\
conc148([], L, L).
conc148([H|T], L2, [H|L]) :-
conc148(T, L2, L).
memb148(X, [X|_]).
memb148(X, [_|T]) :-
memb148(X, T).
getdigits148([], []).
getdigits148([X|T], [X|NT]) :-
number(X), !,
getdigits148(T, NT).
getdigits148([_|T], NT) :-
getdigits148(T, NT).
joindigits148([X], [X]).
joindigits148([X,Y|T], NT) :-
XY is 10*X + Y,
joindigits148([XY|T], NT).
joindigits148([X,Y|T], [X|NT]) :-
joindigits148([Y|T], NT).
genexp148([Exp], Exp).
genexp148(L, Exp) :-
conc148(Before, [N1,N2|After], L),
memb148(Op, ['+','-','*','/']),
NExp =.. [Op, N1, N2],
conc148(Before, [NExp|After], L1),
genexp148(L1, Exp).
firstMinus148(L, L).
firstMinus148([X|T], [Y|T]) :-
Y is -X.
checkLicensePlate(LP, E1, E2) :-
getdigits148(LP, Digs),
conc148(L1, L2, Digs),
joindigits148(L1, N1),
joindigits148(L2, N2),
firstMinus148(N1, MN1),
firstMinus148(N2, MN2),
genexp148(MN1, E1),
genexp148(MN2, E2),
E1 =:= E2.
'''
test_cases = [
('''checkLicensePlate([l, j, l, 3, '-', 2, 4, 2], E1, E2)''',
[{'E1': '-3', 'E2': '(-2-4)/2'}, {'E1': '3', 'E2': '(2+4)/2'},
{'E1': '-3*2', 'E2': '-4-2'}, {'E1': '3*2', 'E2': '4+2'},
{'E1': '-3*2+4', 'E2': '-2'}, {'E1': '3*2-4', 'E2': '2'}]),
('''checkLicensePlate([k, r, a, 3, '-', 2, 1, 7], E1, E2)''',
[{'E1': '-3', 'E2': '-21/7'}, {'E1': '3', 'E2': '21/7'},
{'E1': '-3*2', 'E2': '1-7'}, {'E1': '3*2', 'E2': '-1+7'},
{'E1': '3*2+1', 'E2': '7'}, {'E1': '-3*2-1', 'E2': '-7'}]),
('''checkLicensePlate([g, o, c, 8, '-', 2, 1, 3], E1, E2)''',
[{'E1': '-8', 'E2': '-2*(1+3)'}, {'E1': '8', 'E2': '2*(1+3)'},
{'E1': '-8/2+1', 'E2': '-3'}, {'E1': '8/2-1', 'E2': '3'},
{'E1': '-8/2', 'E2': '-1-3'}, {'E1': '8/2', 'E2': '1+3'}]),
]
def test(code, aux_code):
n_correct = 0
engine_id = None
try:
engine_id, output = prolog.engine.create(code=code+aux_code, timeout=1.0)
if engine_id is not None and 'error' not in map(itemgetter(0), output):
# Engine successfully created, and no syntax error in program.
for query, answers in test_cases:
if prolog.engine.check_answers(engine_id, query=query, answers=answers, timeout=1.0):
n_correct += 1
finally:
if engine_id:
prolog.engine.destroy(engine_id)
hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
return n_correct, len(test_cases), hints
def hint(code, aux_code):
# TODO
return []
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