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)

#include <stdio.h>

int main(void)
{
	int A, B, x, y, z;

	scanf("%d %d", &A, &B);

	x = A + B;
	y = A - B;
	z = A * B;
	

	
		if (x >= y && x >= z)
			printf("%d", x);

	
	
		if (y >= x && y >= z)
			printf("%d", y);
	
	
		if (z >= x && z >= y)
			printf("%d", z);
		if (A == 0 && B == 0)
			printf("0");
	return 0;
}