PROGRAMMING:Is it 3 digits

Input a positive integer, if it is 3 digits, then output yes, otherwise output No.
###Input format:
Enter a positive integer directly without any additional characters.
###Output format:
Output yes or no directly without any additional characters.
###Input example:
```in
one hundred and thirty-two
```
###Output example:
```out
yes
```
###Input example:
```
one thousand two hundred and thirty-four
```
###Output example:
```
no
```






answer：If there is no answer, please comment