There are 5 students participating in a mathematics competition, and the scores of the competition are all integers. The highest score among the 5 students is 100 points, and the lowest score is 60 points, and the scores obtained by each student are different. The average score of the 5 students is 85 points. Please estimate how many points the student ranked third got at least.
有5为同学参加数学比赛，比赛分数都为整数.5人中最高分数是100分，最低分数是60分，且每人所得分数不相同，5人的平均分数是85分．请估算一下，排在第三的那位同学最少得多少分．
<result>84</result>