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.Scanner;

class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        if (scanner.hasNextLine()) {
            String[] array = scanner.nextLine().split(" ");
            int a = Integer.parseInt(array[0]);
            int b = Integer.parseInt(array[1]);

            int p = a + b;
            int d = a - b;
            int m = a * b;
            
            if (p <= d && m <= d) {
                System.out.println(d);
            } else if (p <= m) {
                System.out.println(m);
            } else {
                System.out.println(p);
            }
        }
    }
}