PROGRAMMING:Calculate four digits in reverse order
Enter a four digit number to get a new four digit number. The thousand digit, hundred digit, ten digit and individual digit of the new number are the single digit, ten digit, hundred digit and thousand digit of the original number respectively.
###Input format:
Enter a four digit number (assuming that the input must be four digits and the last digit is not 0).
###Output format:
Output a four digit number.
###Input example:
Here is a set of inputs. For example:
```in
one thousand two hundred and thirty-four
```
###Output example:
The corresponding output is given here. For example:
```out
four thousand three hundred and twenty-one
```
answer：If there is no answer, please comment
###Input format:
Enter a four digit number (assuming that the input must be four digits and the last digit is not 0).
###Output format:
Output a four digit number.
###Input example:
Here is a set of inputs. For example:
```in
one thousand two hundred and thirty-four
```
###Output example:
The corresponding output is given here. For example:
```out
four thousand three hundred and twenty-one
```
answer：If there is no answer, please comment