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()
{
int a,b;
scanf("%d%d",&a,&b);
int s,d,m;
if(a==0&&b==0){
printf("0\n");
}
else{
s=a+b;
d=a-b;
m=a*b;
 if(s>d&&s>m){
printf("%d\n",s);
}
else if(d>s&&d>m){
printf("%d\n",d);
}
else if(m>s&&m>d){
printf("%d\n",m);
}
}

return 0;

}