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++ (GCC 5.4.1) (judge verdict: Accepted)

/*  include  */
#include <bits/stdc++.h>

/*  using namespace  */
using namespace std;

/*  local var  */

/*  define  */
#define loop(i,j) for(int i = 0; i < j; i++)

/*  typedef  */
typedef long long ll;

/*  function  */
//None

/*  main program  */
int main()
{
	ll A,B;	
	cin>>A>>B;
	cout<<max(A+B,max(A-B,A*B))<<endl;
}