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: Wrong Answer)

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;

class Program
{
    static void Main(string[] args)
    {
        var p = new Program();
        var N = p.ConvertIntArray(p.ReadInput());
        var result = N[0] + N[1];
        var result2 = N[0] - N[1];
        var result3 = N[0] * N[1];

        if (result > result2) 
        {
            if (result > result3)
            {
                Console.WriteLine(result);
            }
        }

        if (result2 > result)
        {
            if(result2 > result3)
            {
                Console.WriteLine(result2);
            }
        }

        if (result3 > result)
        {
            if (result3 > result2)
            {
                Console.WriteLine(result3);
            }
        }
    }

    public string[] ReadInput()
    {
        return Console.ReadLine().Split(' ');
    }

    public int[] ConvertIntArray(string[] x)
    {
        var convertedArray = new int[x.Length];
        for (var i = 0; i < x.Length; i++)
        {
            convertedArray[i] = int.Parse(x[i]);
        }

        return convertedArray;
    }
}