Task: Program Execution
Input (English): 18, 19, ['1549', '5859', '7035', '101', 'P', 'Y', 's', '7621', 's', '651', '563', '1149', 'm', '7271', '4801', '8823', '2859', 'A', '1703', '3959', 'j', '7175', '4389', '4837', '1601', 'P', '4711', '6541']
Output (English): A1703