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: Accepted)

using System;
using System.Collections.Generic;

class Program
{
    static void Main(string[] args)
    {
        var Box = Console.ReadLine();
        var Each = Box.Split(' ');
        int A, B, max;
        A = int.Parse(Each[0]);
        B = int.Parse(Each[1]);
        max = A + B;
        if (A - B > max)
        {
            max = A - B;
        }
        if (A * B > max)
        {
            max = A * B;
        }
        Console.WriteLine(max);

        Console.ReadLine();
    }
}