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;

class Program{

  static int a, b, ans;
  static int[] c = new int[3];

  static int Main() {

    string[] nyu = new string[2];

    nyu = Console.ReadLine().Split(' ');
    a = int.Parse(nyu[0]);
    b = int.Parse(nyu[1]);

    c[0] = a + b;
    c[1] = a - b;
    c[2] = a * b;

    ans = c.Max();

    Console.WriteLine("{0}", ans);

    return 0;
  }

}