Function: sum(log(numbers("xxx") if square(numbers("per") if numbers("xxx") > numbers('xry') else numbers('rep')) > gradient[0](square(numbers('xry') if numbers("per") > numbers("xxx") else numbers('rep'))) else numbers("xxx") if numbers('rep') > numbers('xry') else numbers("per"), gradient[0](square(numbers('xry') if numbers("per") > numbers('rep') else numbers("xxx")))), numbers("xxx") if numbers("per") if numbers('rep') > numbers('xry') else numbers("xxx") > gradient[0](square(numbers("per") if numbers('xry') > numbers('rep') else numbers("xxx"))) else square(numbers('rep') if numbers('xry') > numbers("xxx") else numbers("per")))
