Task: Program Execution
Input (English): 10, 16, ['K', 'r', 'C', 'P', 'l', '8417', '2851', 'f', 'U', 'k', '1529', '4131', '5467', 'U', 'I', 'O', 'v', '7887', '3387']
Output (English): OIU546741311529k