Problem:
Score : 100 points

Problem Statement

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.

Sample Input 1

3 1

Sample Output 1

4

3+1=4, 3-1=2 and 3 \times 1=3. The largest among them is 4.

Sample Input 2

4 -2

Sample Output 2

6

The largest is 4 - (-2) = 6.

Sample Input 3

0 0

Sample Output 3

0

Solution in JavaScript (node.js v5.12) (judge verdict: Wrong Answer)

function Main(s){
	s=s.split(/\n|\s/);
	s.forEach(function(e,i,a){a[i]=Number(a[i]);});
	var a=s[0]+s[1];
	var b=s[0]-s[1];
	var c=s[0]*s[1];
	a=a>b?a:b;
	a=a>c?a:c;
	
	console.log(a);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));