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;
	int b;
	
	int plus, minus, mul, result;
	
	scanf("%d", &a);
	scanf("%d", &b);
	
	plus = a + b;
	minus = a - b;
	mul = a * b;
	
	if (plus > minus) {
		if (plus > mul) {
			printf("%d", plus);
		}
		else {
			printf("%d", mul);
		}
	}
	else {
		if (minus > mul) {
			printf("%d", minus);
		}
	}
	return (0);
}