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(void)
{
   int a,b,ans;
   int ad,sb,ml;

   scanf("%d%d",&a,&b);

   ad=a+b;
   sb=a-b;
   ml=a*b;

   ans = ad;
   if((ad>=sb)&&(ad>=ml))
      ans=ad;
   else if((ml>=ad)&&(ml>=ad))
      ans=ml;
   else if((sb>=ml)&&(sb>=ad))
      ans=sb;

   printf("%d\n",ans);

   return 0;
}