Task: Program Execution
Input (English): 2, 7, ['4935', 'P', '4447', '5635', '2571', 'C', '4405', '9561', '717', 'K', '5093', '1001', '9801', 'L', '8987', 'I', 'c', '5251', '3615']
Output (English): P444756352571C4405