#include <iostream>
#include <algorithm>
int main(){int a,b;std::cin>>a>>b;std::cout<<std::max({a+b,a-b,a*b});}
### Prompt

Please provide a Cpp coded solution to the problem described below:

You are given two integers A and B. Find the largest value among A+B, A-B and A \times B.

Constraints

* -1000 \leq A,B \leq 1000
* All values in input are integers.

Input

Input is given from Standard Input in the following format:


A B


Output

Print the largest value among A+B, A-B and A \times B.

Examples

Input

3 1


Output

4


Input

4 -2


Output

6


Input

0 0


Output

0

### Response

```cpp
#include <iostream>
#include <algorithm>
int main(){int a,b;std::cin>>a>>b;std::cout<<std::max({a+b,a-b,a*b});}
```