Problem:
Score : 100 points

Problem Statement

We have two integers: A and B.

Print the largest number among A + B, A - B, and A \times B.

Constraints

All values in input are integers.

-100 \leq A,\ B \leq 100

Input

Input is given from Standard Input in the following format:

A B

Output

Print the largest number among A + B, A - B, and A \times B.

Sample Input 1

-13 3

Sample Output 1

-10

The largest number among A + B = -10, A - B = -16, and A \times B = -39 is -10.

Sample Input 2

1 -33

Sample Output 2

34

The largest number among A + B = -32, A - B = 34, and A \times B = -33 is 34.

Sample Input 3

13 3

Sample Output 3

39

The largest number among A + B = 16, A - B = 10, and A \times B = 39 is 39.

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

int main()
{
	int A, B, sum = 0, sum1 = 0;
	scanf("%d%d",&A,&B);
	sum = A + B;
	sum1 = A - B;
	float sum2 = (float)A / B;
	if (sum > sum1 && sum > sum2)
		printf("%f", sum);
	else if (sum1 > sum && sum1 > sum2)
		printf("%f", sum1);
	else if(sum2 > sum && sum2 > sum1)
		printf("%f",sum2);
	return 0;
}