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: Accepted)

#include <stdio.h>

int max(int a, int b, int c);

int main() {
	int A;
	int B;
	int sum, dif, mul;
	scanf("%d %d", &A, &B);
	sum = A + B;
	dif = A - B;
	mul = A * B;
	printf("%d", max(sum, dif, mul));
	return 0;
}

int max(int a, int b, int c) {
	int max;
	if (a > b) {
		max = a;
	} else {
		max = b;
	}
	if (max < c) {
		max = c;
	}
	return max;
}