PROGRAMMING:Average score
###Input format:
Enter 5 integers to indicate the scores of 5 courses.
Input to the end of the file.
###Output format:
The output content is the average score, and the result retains 1 decimal place.
###Input example:
Here is a set of inputs. For example:
```in
66 77 88 99 79
```
###Output example:
The corresponding output is given here. For example:
```out
eighty-one point eight
```
answer：If there is no answer, please comment
Enter 5 integers to indicate the scores of 5 courses.
Input to the end of the file.
###Output format:
The output content is the average score, and the result retains 1 decimal place.
###Input example:
Here is a set of inputs. For example:
```in
66 77 88 99 79
```
###Output example:
The corresponding output is given here. For example:
```out
eighty-one point eight
```
answer：If there is no answer, please comment