Task: Program Execution
Input (English): 8, 8, ['7385', '5001', 'N', '5561', 'r', '3073', 'f', 'B', '249', '459', 'u', 'Z', 'f', 'h', '6009', 'Q', 'I', '2959', '6425', '2263', '6969', '6379']
Output (English): B