Task: Program Execution
Input (English): 18, 18, ['4251', 'N', '4549', '5665', '8549', 'G', '2673', 'S', '8305', 'G', 'A', 'z', 'B', '1461', 'h', '5463', '8501', '9411', '4117', 'A']
Output (English): 9411