Ten people participate in a quiz, and each person must answer 24 questions. 5 points for a correct answer, 3 points for a wrong answer, and each person's score is different. So how many points can the last one get at most?
十人参加智力竞赛，每人必须回答24个问题．答对一题得5分，答错一题扣3分，且每人的得分均不相同．那么最后一名最多得多少分．
<result>13</result>