#D3709. Add Sub Mul
Add Sub Mul
Add Sub Mul
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
inputFormat
input are integers.
Input
Input is given from Standard Input in the following format:
A B
outputFormat
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
样例
0 00