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: Runtime Error)

using System;

class test{
    public static void Main(string[] args){
        int a=int.Parse(Console.ReadLine());
        int b=int.Parse(Console.ReadLine());
        int max=int.MinValue;
        if(a+b>max) max=a+b;
        if(a-b>max) max=a-b;
        if(a*b>max) max=a*b;
        Console.WriteLine("{0}",max);
    }
}