Problem:
Score : 100 points

Problem Statement

We have two integers: A and B.

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

Constraints

All values in input are integers.

-100 \leq A,\ B \leq 100

Input

Input is given from Standard Input in the following format:

A B

Output

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

Sample Input 1

-13 3

Sample Output 1

-10

The largest number among A + B = -10, A - B = -16, and A \times B = -39 is -10.

Sample Input 2

1 -33

Sample Output 2

34

The largest number among A + B = -32, A - B = 34, and A \times B = -33 is 34.

Sample Input 3

13 3

Sample Output 3

39

The largest number among A + B = 16, A - B = 10, and A \times B = 39 is 39.

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;

namespace AtCorderBeginner137
{
    public class Answer
    {
        public static void Main(string[] args)
        {
            string[] input = Console.ReadLine().Split(' ');
            int a;
            int.TryParse(input[0], out a);
            int b;
            int.TryParse(input[1], out b);

            int sum = a + b;
            int sub = a - b;
            int multi = a * b;
            if(sum >= multi && sum >= sub)
            {
                Console.WriteLine(sum);
            }
            else if(sub >= multi && sub >= sum)
            {
                Console.WriteLine(sub);
            }
            else
            {
                Console.WriteLine(multi);
            }
        }
    }
}