Task: Program Execution
Input (English): 17, 21, ['819', '4819', '665', 'X', 'L', '9673', '1523', '9459', 'j', '4565', '5051', 'e', '83', '5581', 'F', '5917', 'j', 'v', '3439', 'm', 'M']
Output (English): 3439