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++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <iostream>
#include<algorithm>
#include<cstdio>
using namespace std;
int main()
{
	int a, b;
	scanf("%d %d", &a, &b);
	int a1 = a + b;
	int a2 = a - b;
	int a3 = a * b;
	int max1 = max(a1, a2);
	max1 = max(max1, a3);
	cout << max1 << endl;
	printf("The largest number among A + B = %d,A - B = %d, and A * B = %d is %d.\n", a1, a2, a3, max1);
	return 0;
}