PROGRAMMING:Last four in reverse order
###Task description
The program reads in a positive integer of at least 4 digits each time, and then outputs the following 4 digits in reverse order. Note: when the input number contains the ending 0, the output should not have the leading 0. For example, if the input is 57000, the output should be 7.
###Input format:
Each test is a positive integer.
###Output format:
Output the number in reverse order.
###Input sample 1:
```in
thirty-four thousand and five hundred
```
###Output sample 1:
```out
fifty-four
```
###Input sample 2:
```in
thirty-four thousand five hundred and sixty-seven
```
###Output sample 2:
```out
seven thousand six hundred and fifty-four
```
answer：If there is no answer, please comment
The program reads in a positive integer of at least 4 digits each time, and then outputs the following 4 digits in reverse order. Note: when the input number contains the ending 0, the output should not have the leading 0. For example, if the input is 57000, the output should be 7.
###Input format:
Each test is a positive integer.
###Output format:
Output the number in reverse order.
###Input sample 1:
```in
thirty-four thousand and five hundred
```
###Output sample 1:
```out
fifty-four
```
###Input sample 2:
```in
thirty-four thousand five hundred and sixty-seven
```
###Output sample 2:
```out
seven thousand six hundred and fifty-four
```
answer：If there is no answer, please comment