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 (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>
int main (void)
{
    int A,B,a,s,v;
    scanf("%d%d",&A,&B);
    a=A+B;
    s=A-B;
    v=A*B;
    if((a>=s)&&(a>=v))
        printf("%d\n",a);
    else if((s>=a)&&(s>=v))
        printf("%d\n",s);
    else
        printf("%d\n",v);
return 0 ;
}