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 static System.Console;
using System.Linq;

namespace practice
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] stringinput = ReadLine().Split(' ');
            int[] input = stringinput.Select(x => int.Parse(x)).ToArray();
            var output = max(input[0], input[1]);

            WriteLine(output);
        }

        public static int max(int a, int b)
        {
            var max = a + b;

            if (max < a - b)
            {
                max = a - b;
            }

            else if (max < a * b)
            {
                max = a * b;
            }

            return max;
        }
    }
}