Task: Program Execution
Input (English): 4, 4, ['8677', '421', '6571', 'K', 'p', 'B', 'M', 'c', '6231', '8911', '8547', 'k', '7681', 'Y', 'F', 'G', 'O', '1607', 'U', 'V']
Output (English): K