PROGRAMMING:Give the grade
Write a program to achieve the following functions
If the score is not in the range of 0-100, it is required to re-enter the data until the data is in the range of 0-100.
The input data is converted into grades' a ',' B ',' C ','d' and 'e' and output. A score of more than 90, B score of 80-89, C score of 70-79,
A score of 60-69 was "d" and a score below 60 was "e".
###Input format:
Use newline as input data separator
###Output format:
Output the result according to the output instance format
###Input example:
```in
one hundred and three
fifty-five point three
```
###Output example:
The corresponding output is given here. For example:
```out
score=55.3,grade=E
```
answer：If there is no answer, please comment
If the score is not in the range of 0-100, it is required to re-enter the data until the data is in the range of 0-100.
The input data is converted into grades' a ',' B ',' C ','d' and 'e' and output. A score of more than 90, B score of 80-89, C score of 70-79,
A score of 60-69 was "d" and a score below 60 was "e".
###Input format:
Use newline as input data separator
###Output format:
Output the result according to the output instance format
###Input example:
```in
one hundred and three
fifty-five point three
```
###Output example:
The corresponding output is given here. For example:
```out
score=55.3,grade=E
```
answer：If there is no answer, please comment