Task: Program Execution
Input (English): 3, 7, ['4307', 'a', 'x', '4801', 'e', '3713', 'u', 'E', '957', 'H', 'F', '8879', 'e', '9659', 'G', '5407', '9003', '7493', '2763', 'z', '2955', '8249', 'a', 'L', 'd']
Output (English): x4801e3713u