Task: Program Execution
Input (English): 6, 6, ['P', '3241', 'f', 'j', '8495', 'U', 'P', '2103', '5891', 'Z', '3071', 'T', 'g', '6281', '8539', '7381', '6831', '9403', '3591', 'B']
Output (English): U