Update app.py

app.py

@@ -174,7 +174,7 @@ def main():
         )
 
         # Prefill with selected example
-        example_idx = int(selected_example.split(" ")[1]) - 1
+        example_idx = int(selected_example.split(" ")[1].replace(":", "")) - 1
         example_problem = EXAMPLES[example_idx]['Problem']
         example_rationale = EXAMPLES[example_idx]['Rationale']
         example_answer = EXAMPLES[example_idx]['Answer']