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# coding=utf-8
from operator import itemgetter
import prolog.engine
import server.problems
id = 149
number = 61
visible = True
facts = None
solution = '''\
cd(X, Y, CD):-
X #= _ * CD,
Y #= _ * CD,
indomain(CD).
gcd(X, Y, GCD):-
cd(X, Y, GCD),
\+ ( cd(X, Y, CD), CD > GCD ).
'''
test_cases = [
('gcd(1, 1, X)',
[{'X': '1'}]),
('gcd(12, 8, X)',
[{'X': '4'}]),
('gcd(18, 36, X)',
[{'X': '18'}]),
('gcd(21, 14, X)',
[{'X': '7'}]),
('gcd(10, 22, X)',
[{'X': '2'}]),
('gcd(66, 60, X)',
[{'X': '6'}]),
]
def test(program, solved_problems):
code = (program + '\n' +
server.problems.solutions_for_problems('prolog', solved_problems))
n_correct = 0
engine_id = None
try:
engine_id, output = prolog.engine.create(code=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)
passed = n_correct == len(test_cases)
hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
return passed, hints
def hint(program, solved_problems):
# TODO
return []
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