PROGRAMMING:Count three numbers
Program input three integers, output the sum and average of the three integers.
###Output format:
One integer (sum), one real number (average value keeps 4 decimal places)
###Input example:
```in
1 2 3
```
###Output example:
```out
6 2.0000
```
answer：If there is no answer, please comment
###Output format:
One integer (sum), one real number (average value keeps 4 decimal places)
###Input example:
```in
1 2 3
```
###Output example:
```out
6 2.0000
```
answer：If there is no answer, please comment