Function: invert(minus(product(numbers('xyy'), numbers('xyy')) if numbers('xyy') > numbers("per") if numbers('xyy') > numbers('xyy') else product(numbers('xyy'), numbers('xyy')) else numbers('xyy') if numbers('xyy') > numbers('xyy') if numbers("per") > product(numbers('xyy'), numbers('xyy')) else numbers('xyy') else product(numbers('xyy'), numbers('xyy')), numbers('xyy') if numbers('xyy') > product(numbers('xyy'), numbers('xyy')) else product(numbers('xyy'), numbers('xyy')) if numbers("per") > numbers('xyy') else numbers('xyy')))
