Function: invert(mean(product(numbers('xry'), numbers('yyx')) if numbers('xry') > numbers('yyx') if numbers('xry') > numbers('yxr') else product(numbers('xry'), numbers('yyx')) else product(numbers('yyx') if numbers('xry') > product(numbers('xry'), numbers('yyx')) else numbers('yxr'), product(numbers('xry'), numbers('yyx'))), product(numbers('yyx') if numbers('xry') > numbers('yxr') else product(numbers('xry'), numbers('yyx')), product(numbers('xry'), numbers('yyx')))))
