PROGRAMMING:Statistics of class performance

The head teacher should count the grades of all the students in the class, but when the Chinese teacher provides the data to the head teacher, the data does not distinguish different information, and provides all the students' names and grades to the head teacher. Please help the head teacher to identify the string provided by the Chinese teacher, analyze the score and name, output the average score of the class, the name and score of the highest score students, and the name and score of the lowest score students.
###Input format:
A string containing the name (pinyin, and no number in the name) and the score. The score is between 0 and 100
###Output format:
Output three lines of data, each number retains 1 decimal place
First line class average
The second line is the name and score of the highest score in the class. If there are multiple highest scores, the first person will be selected
The third line is the name and grade of the lowest score of the class. If there are multiple lowest scores, the first person will be selected
###Input example:
```in
Zhangsan90lisi85wangwu55.5liuyuxi72malong99.5zhaosiguo65yuguoqin88
```
###Output example:
```out
seventy-nine point three
malong 99.5
wangwu 55.5
```
###






answer：If there is no answer, please comment