Problem:
Score : 100 points

Problem Statement

We have two integers: A and B.

Print the largest number among A + B, A - B, and A \times B.

Constraints

All values in input are integers.

-100 \leq A,\ B \leq 100

Input

Input is given from Standard Input in the following format:

A B

Output

Print the largest number among A + B, A - B, and A \times B.

Sample Input 1

-13 3

Sample Output 1

-10

The largest number among A + B = -10, A - B = -16, and A \times B = -39 is -10.

Sample Input 2

1 -33

Sample Output 2

34

The largest number among A + B = -32, A - B = 34, and A \times B = -33 is 34.

Sample Input 3

13 3

Sample Output 3

39

The largest number among A + B = 16, A - B = 10, and A \times B = 39 is 39.

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
class Hello
{

    static void Main(string[] args)
    {
        var AB = Console.ReadLine().Split(' ');
        int a = int.Parse(AB[0]);
        int b = int.Parse(AB[1]);
        int ab1 = a + b;
        int ab2 = a - b;
        int ab3 = a * b;
        int max = 0;

        max = ab1;
        if (ab1 < ab2)
        {
            max = ab2;
            if (ab1 < ab3)
            {
                max = ab3;
            }

        }
        else
        {

            if (ab1 < ab3)
            {
                max = ab3;
            }
        }

        Console.WriteLine(max);
    }

}