Task: Program Execution
Input (English): 16, 17, ['f', 'a', '2123', 'b', '7741', '7705', '2363', '1759', 'a', '9931', 'P', 'z', 'g', '4827', '449', 'f', 'r', 'J', 'Y', 'Q', '5113']
Output (English): rf