Task: Program Execution
Input (English): 19, 20, ['4939', '8635', 'K', '9067', 'O', 'L', '8041', '4767', 'S', '4455', 'E', '8457', '2533', '8731', 'A', 'g', '2393', '1169', 'o', 'b', 'E', 'N', 'I', 'u', '9339', 'f']
Output (English): o, b