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: Accepted)

#include <stdio.h>

int main()
{
	int i, max;
	int a, b;
	int c[3];

	scanf("%d%d", &a, &b);
	c[0] = a + b;
	c[1] = a - b;
	c[2] = a * b;

	for (i = 1, max = c[0]; i < 3; i++) {
		if (c[i] > max) {
			max = c[i];
		}
	}

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

	return 0;
}