PROGRAMMING:Input two integers and output them in the order from small to large.

Input two integers and output them in the order from small to large.
###Input format:
Enter two integers separated by spaces.
###Output format:
Output two integers in descending order, separated by commas.
###Input example:
```in
9 1
```
###Output example:
```out
1,9
```







answer：If there is no answer, please comment