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: Wrong Answer)

#include <stdio.h>
int main()
{
   long int a,b,c[4],i,temp=0;
   scanf("%ld %ld",&a,&b);
   c[0]=a+b;
   c[1]=a-b;
   c[2]=a*b;
   for(i=0;i<3;i++){
    if(c[i]>temp){
        temp=c[i];
    }
   }
   printf("%ld\n",temp);
  return 0;
}