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;

class A
{
	static void Main()
	{
	  var h = Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
      int max = -1000*1000 - 1;
      
      if( max < h[0]+h[1] ){
        max = h[0]+h[1];
      }
      if( max < h[0]-h[1] ){
        max = h[0]-h[1];
      }
      if( max < h[0]*h[1] ){
        max = h[0]*h[1];
      }
      //Console.WriteLine(h[0] == h[1] ? "Yes" : "No");
      Console.WriteLine(max);
	}
}