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-rw-r--r--prolog/problems/lists_advanced/palindrome_1/common.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/prolog/problems/lists_advanced/palindrome_1/common.py b/prolog/problems/lists_advanced/palindrome_1/common.py
index f1baf4e..bbd28fb 100644
--- a/prolog/problems/lists_advanced/palindrome_1/common.py
+++ b/prolog/problems/lists_advanced/palindrome_1/common.py
@@ -6,7 +6,7 @@ import prolog.util
from server.hints import Hint, HintPopup
id = 112
-number = 19
+number = 40
visible = True
facts = None
@@ -94,7 +94,7 @@ def hint(code, aux_code):
if prolog.engine.ask_truthTO(engine_id, 'palindrome(kokos(1))'):
return [{'id': 'arbitrary_base_case'}]
- if any(t.val == 'last' for t in tokens):
+ if any(t.val in ('last', 'last_elem') for t in tokens):
return [{'id': 'last_used'}]
# target predicate seems to always be false