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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

    import java.util.*;
    public class Main {
     
    	public static void main(String[] args) {
    			
    		Scanner scan =new Scanner(System.in);
    		
    		int a=Integer.parseInt(scan.next());
    		int b=Integer.parseInt(scan.next());
    		
    		int[] ans= {a+b,a-b,a*b};
    		Arrays.parallelSort(ans);
    		System.out.print(ans[2]);
    		
    	


    		
     
    }
    }
// end