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;

namespace test
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = Console.ReadLine().Split(null);
            int A = int.Parse(input[0]);
            int B = int.Parse(input[1]);
            int add = A + B;
            int sub = A - B;
            int mul = A * B;
            int higher;

            if (add >= sub)
            {
                higher = add;
            }else
            {
                higher = sub;
            }

            if (mul > higher)
            {
                higher = mul;
            }

            Console.WriteLine(higher);
        }    
    }
}