Problem:
Score : 100 points

Problem Statement

You are given two integers A and B.
Find the largest value among A+B, A-B and A \times B.

Constraints

-1000 \leq A,B \leq 1000

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

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

Sample Input 1

3 1

Sample Output 1

4

3+1=4, 3-1=2 and 3 \times 1=3. The largest among them is 4.

Sample Input 2

4 -2

Sample Output 2

6

The largest is 4 - (-2) = 6.

Sample Input 3

0 0

Sample Output 3

0

Solution in C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

using System;

namespace ABC098_a
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] array = Console.ReadLine().Split(' ');
            int a = int.Parse(array[0]);
            int b = int.Parse(array[1]);
            int max = a + b;
            if(a * b　>= a + b)
            {
                max = a * b;
                Console.WriteLine(max);
            }else if(a - b >= a + b)
            {
                max = a - b;
                Console.WriteLine(max);
            }else if(a + b >= a * b)
            {
                if(a * b >= a - b)
                {
                    Console.WriteLine(max);
                }
                else
                {
                    Console.WriteLine(max);
                }
            }
        }
    }
}