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 _98_1
{
    class Program
    {
		static void Main(string[] args)
		{
			string[] acs = Console.ReadLine().Split(' ');
			int A = int.Parse(acs[0]);
			int B = int.Parse(acs[1]);
			if (A + B <= A - B)
			{
				Console.WriteLine(A - B);
			}
			else if (A * B <= A + B)
			{
				Console.WriteLine(A + B);
			}
			else
			{
				Console.WriteLine(A * B);
			}
			Console.ReadLine();
		}
    }
}