Task: Program Execution
Input (English): 18, 18, ['4669', '2823', '7143', '1507', '9641', 'o', '5341', 'h', 'F', 'W', '8979', '7133', 'r', '2143', '3131', 'c', 'a', '2479', 'B']
Output (English): 2479