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 Program {
    static void Main(string[] args)
    {
        int a = Convert.ToInt32(args[0]);
        int b = Convert.ToInt32(args[1]);

        int[] res = new int[3];
        //res[0] = a + b;
        //res[1] = a - b;
        //res[2] = a * b;
        int ret = 0;
        //ret = res.Max();
        System.Console.WriteLine(ret);
    }
}