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;
class Atcoder_ABC137A
{
    static void Main(string[] args)
    {
        string[] input_string = Console.ReadLine().Split(' ');
        int A_int = int.Parse(input_string[0]);
        int B_int = int.Parse(input_string[1]);
        int sumAB = A_int + B_int;
        int minusAB = A_int - B_int;
        int SekiAB = A_int * B_int;

        int tempresult = Comparetwoint(sumAB, minusAB);
        tempresult = Comparetwoint(tempresult, SekiAB);


        //出力
        Console.WriteLine(tempresult);

        
    }
    public static int Comparetwoint(int a, int b)
    {
        int result = (a >= b) ? a : b;
        return result;
    }
}