diff options
Diffstat (limited to 'prolog/problems/family_relations/sister_2/common.py')
| -rw-r--r-- | prolog/problems/family_relations/sister_2/common.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/prolog/problems/family_relations/sister_2/common.py b/prolog/problems/family_relations/sister_2/common.py index 2c9528e..9be9e6d 100644 --- a/prolog/problems/family_relations/sister_2/common.py +++ b/prolog/problems/family_relations/sister_2/common.py @@ -45,3 +45,8 @@ def test(program): prolog.engine.destroy(engine_id) return n_correct, len(queries) + +def hint(program): + if '\=' not in program and '\==' not in program: + return [{'id': 'x_y_must_be_different'}] + return None |