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: Runtime Error)

using System;

class Class1
{

    public static void Main(string[] args)
    {
        int A = int.Parse(Console.ReadLine());
        int B = int.Parse(Console.ReadLine());

        if (A + B > A - B)
        {
            if (A + B > A * B)
            {
                Console.WriteLine(A + B);
            }
            else
            {
                Console.WriteLine(A * B);
            }
        }
        else if (A - B > A * B)
        {
            Console.WriteLine(A - B);
        }
        else
        {
            Console.WriteLine(A * B);
        }
        Console.ReadLine();
    }
}