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.*;

class Main{
	int a,b;

  public static void main(String[] ar){
    new Main();
  }
  public Main(){
  	Scanner sc=new Scanner(System.in);
  	String line=sc.nextLine();
    String[] elestr=line.split(" ");
  	a=Integer.parseInt(elestr[0]);
    b=Integer.parseInt(elestr[1]);	
  	int x[]=new int[3];
    x[0]=a+b; x[1]=a-b; x[2]=a*b;
    Arrays.sort(x);

    System.out.println(x[2]);
  }
}