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;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp34 {
    class Program {
        static void Main(string[] args) {
            var s = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();

            int A = s[0];
            int B = s[1];

            int sum = A + B;
            int sub = A - B;
            int pro = A * B;

            Console.WriteLine(Math.Max(sum, Math.Max(sub, pro)));

        }

    }
}