PROGRAMMING:Exchange two variables
Please exchange the value of two variables. Input 2 integers, and then display the 2 numbers and exchanged 2 numbles.
### Input Specification:
Input 2 integers in one line. Separate them by one space.
### Output Specification:
Output the 2 numbers in the first line, output the exchanged numbers in the second line.
Separate 2 numbers by a space.
### Sample Input:
```in
12 44
```
### Sample Output:
```out
a=12 b=44
a=44 b=12
```
answer：If there is no answer, please comment
### Input Specification:
Input 2 integers in one line. Separate them by one space.
### Output Specification:
Output the 2 numbers in the first line, output the exchanged numbers in the second line.
Separate 2 numbers by a space.
### Sample Input:
```in
12 44
```
### Sample Output:
```out
a=12 b=44
a=44 b=12
```
answer：If there is no answer, please comment