PROGRAMMING:Output grade
```
Characters are used to represent the level of achievement. A represents [90-100], B represents [80-90], C represents [70-80], and C represents [70-80]
D stands for [60-70], e stands for [0-60]. Please program to input a score (integer), and output the number representing the score
Character. If the input data is not between 0-100, output X.
```
###Input example:
```in
ninety-five
```
###Output example:
```out
A
```
###Input example:
```in
one hundred and five
```
###Output example:
```out
X
```
answer：If there is no answer, please comment
Characters are used to represent the level of achievement. A represents [90-100], B represents [80-90], C represents [70-80], and C represents [70-80]
D stands for [60-70], e stands for [0-60]. Please program to input a score (integer), and output the number representing the score
Character. If the input data is not between 0-100, output X.
```
###Input example:
```in
ninety-five
```
###Output example:
```out
A
```
###Input example:
```in
one hundred and five
```
###Output example:
```out
X
```
answer：If there is no answer, please comment