Task: Program Execution
Input (English): 19, 21, ['w', 'q', 'U', 'h', 'a', '5235', 'M', '5059', '9141', 'w', '9447', '1083', '659', '6723', '9913', 'X', '6387', 'c', '5365', 'L', '9999', '6873', '6345']
Output (English): 9999L5635