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 atcoder
{
    class Program
    {
        static void Main(string[] args)
        {
            string a = Console.ReadLine();
            string b = a.Replace(" ", "");
            int c = b[0];
            int d = b[0];
            int e = c + d;
            int f = c - d;
            int g = c * d;
            var h = Math.Max(e, f);
            var i = Math.Max(f, g);
            var j = Math.Max(h, i);
            Console.WriteLine(j);

            
        }
    }

}