Task: Program Execution
Input (English): 1, 9, ['473', 'v', 'I', 'Q', 'z', 'F', 'U', 'Q', '3633', 'O', '9145', 'b', '417', '3107', 's', '1733', '871', '5051', '4069']
Output (English): 473, O, 4069