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);

  if(A==0 && B==0)
  {
      printf("0\n");
  }
  else if(A+B > A-B && A+B> A*B)
  {
      printf("%d", A+B);

  }
  else if(A-B > A+B && A-B >A*B)
  {
      printf("%d", A-B);
  }
  else if(A*B >A+B && A*B> A-B)
  {
      printf("%d",A*B);
  }
}