Task: Program Execution
Input (English): 12, 14, ['8459', 'K', 'F', 't', '815', '907', 'S', '4275', 'h', 'J', 'x', 'e', 'p', 'b', 'm', 'G', '8675', '6897', '2255', '2079', '4217', '2823']
Output (English): bpe