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.io.*;
import java.util.*;

public class Main {
  public static void main( String[] args ) {
	  int a,b,x,y,z;
      Scanner scan = new Scanner(System.in);

   a = scan.nextInt();
   b = scan.nextInt();
   
   x = a + b;
   y = a - b;
   z = a * b;
   
int values[] = {x, y, z};
int max      = values[0];
for (int index = 1; index < values.length; index ++) {
	 max = Math.max(max, values[index]);
     }
	  System.out.println ( max );
  }
}