Task: Program Execution
Input (English): 7, 7, ['6833', '1341', 'c', '7213', '4217', 'l', 'a', '2489', '6825', 'x', '5561', 'v', '887', '8149', 'U', '2419', '6467', '7145', 'B', 'o']
Output (English): a