Task: Program Execution
Input (English): 9, 16, ['5455', '2109', 'Y', '4531', 'w', '4303', 'h', '8511', 'K', '8401', 't', '5515', '2451', 'r', '2125', 'U', '9411', 'C', 'K', 'C', '5803', 'x']
Output (English): U2125r24515515t8401K