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If you are also wondering why the correctness is only 50%, please remember the following test cases (though I really think the problem should include more examples for the ambiguous results):
['gummy', 'gum'] => returns 'gum'
['gum', 'gummy'] => returns 'gummy'
Hope this helps!
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If you are also wondering why the correctness is only 50%, please remember the following test cases (though I really think the problem should include more examples for the ambiguous results):
Hope this helps!