Task: Program Execution
Input (English): 12, 12, ['u', 'R', 'Q', 'W', 'J', 'u', '1243', 'r', 'r', 'S', '2693', 'B', 's', 'u', '9253', 'Y', 'M', '1985', '8427', '8159', '5257', '1281', '3493', '8453', 'Z', '9183', '1399', 'z', '77']
Output (English): B